Search

Your search keyword '"Tasso, D."' showing total 30 results
Start Over Author "Tasso, D."
30 results on '"Tasso, D."'

2. Sex Pheromone Mediates Resource Partitioning Between Drosophila melanogaster and D. suzukii

Author

Kwadha, C. A., Rehermann, G., Tasso, D., Fellous, S., Bengtsson, M., Wallin, Erika A., Flöhr, A., Witzgall, P., Becher, P. G., Kwadha, C. A., Rehermann, G., Tasso, D., Fellous, S., Bengtsson, M., Wallin, Erika A., Flöhr, A., Witzgall, P., and Becher, P. G.

Abstract

The spotted-wing drosophila, Drosophila suzukii and the cosmopolitan vinegar fly D. melanogaster feed on soft fruit and berries and widely overlap in geographic range. The presence of D. melanogaster reduces egg-laying in D. suzukii, possibly because D. melanogaster outcompetes D. suzukii larvae feeding in the same fruit substrate. Flies use pheromones to communicate for mating, but pheromones also serve a role in reproductive isolation between related species. We asked whether a D. melanogaster pheromone also modulates oviposition behaviour in D. suzukii. A dual-choice oviposition assay confirms that D. suzukii lays fewer eggs on blueberries exposed to D. melanogaster flies and further shows that female flies have a stronger effect than male flies. This was corroborated by treating berries with synthetic pheromones. Avoidance of D. suzukii oviposition is mediated by the female D. melanogaster pheromone (Z)-4-undecenal (Z4-11Al). Significantly fewer eggs were laid on berries treated with synthetic Z4-11Al. In comparison, the male pheromone (Z)-11-octadecenyl acetate (cVA) had no effect on D. suzukii oviposition. Z4-11Al is a highly volatile compound that is perceived via olfaction and it is accordingly behaviourally active at a distance from the source. D. suzukii is known to engage in mutual niche construction with the yeast Hanseniaspora uvarum, which strongly attracts flies. Adding Z4-11Al to fermenting H. uvarum significantly decreased D. suzukii flight attraction in a laboratory wind tunnel and a field trapping assay. That a D. melanogaster pheromone regulates oviposition in D. suzukii demonstrates that heterospecific pheromone communication contributes to reproductive isolation and resource partitioning in cognate species. Stimulo-deterrent diversion or push-pull methods, building on combined use of attractant and deterrent compounds, have shown promise for control of D. suzukii. A pheromone that specifically reduces D. suzukii attraction and oviposition adds

Published
2024
Full Text
View/download PDF

3. Direct constraint on the distance of y2 Velorum from AMBER/VLTI observations

Author

Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Zins, G., Roussel, A., Robbe-Dubois, S., Puget, P., Perraut, K., Lisi, F., Coarer, E. Le, Lagarde, S., Kern, P., Glück, L., Duvert, G., Chelli, A., Bresson, Y., Beckmann, U., Antonelli, P., Weigelt, G., Ventura, N., Vannier, M., Valtier, J. -C., Testi, L., Tatulli, E., Tasso, D., Stefanini, P., Stee, P., Solscheid, W., Schertl, D., Salinari, P., Sacchettini, M., Richichi, A., Reynaud, F., Rebattu, S., Rabbia, Y., Preibisch, T., Perrier, C., Pacini, F., Ohnaka, K., Nussbaum, E., Mouillet, D., Monin, J. -L., Mège, P., Mathias, P., Martinot-Lagarde, G., Mars, G., Marconi, A., Magnard, Y., Lopez, B., Contel, D. Le, Contel, J. -M. Le, Kraus, S., Kamm, D., Hofmann, K. -H., Utrera, O. Hernandez, Heininger, M., Heiden, M., Gil, C., Giani, E., Glentzlin, A., Gennari, S., Gallardo, A., Fraix-Burnet, D., Foy, R., Fossat, E., Forveille, T., Ferruzzi, D., Feautrier, P., Dugué, M., Driebe, T., De Souza, A. Domiciano, Delboulbé, A., Connot, C., Colin, J., Clausse, J. -M., Cassaing, F., Busoni, S., Bonhomme, S., Blöcker, T., Behrend, J., Baffa, C., Aristidi, E., Arezki, B., Agabi, K., Acke, B., Accardo, M., Kiekebusch, M., Rantakyrö, F., and Schoeller, Markus

Subjects
Astrophysics
Abstract

In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y2 Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and UT4 on baselines ranging from 46m to 85m. It delivered spectrally dispersed visibilities, as well as differential and closure phases, with a resolution R = 1500 in the spectral band 1.95-2.17 micron. We interpret these data in the context of a binary system with unresolved components, neglecting in a first approximation the wind-wind collision zone flux contribution. We show that the AMBER observables result primarily from the contribution of the individual components of the WR+O binary system. We discuss several interpretations of the residuals, and speculate on the detection of an additional continuum component, originating from the free-free emission associated with the wind-wind collision zone (WWCZ), and contributing at most to the observed K-band flux at the 5% level. The expected absolute separation and position angle at the time of observations were 5.1±0.9mas and 66±15° respectively. However, we infer a separation of 3.62+0.11-0.30 mas and a position angle of 73+9-11°. Our analysis thus implies that the binary system lies at a distance of 368+38-13 pc, in agreement with recent spectrophotometric estimates, but significantly larger than the Hipparcos value of 258+41-31 pc.

Published
2006
Full Text
View/download PDF

4. Educazione Speciale 6. Relazioni sociali e autonomie. Esercitare le abilità di base in studenti con disabilità intellettiva

Author

Arpinati AM, Monetti L, Posar A, Tasso D., Arpinati, Am, Monetti, L, Posar, A, and Tasso, D.

Subjects
Intellectual Disability, Special Education, Autonomy
Abstract

Non vi è vera autonomia senza adeguate competenze sociali. L’indipendenza al di fuori del contesto sociale non è autonomia, bensì emarginazione. E quale ambiente è meglio della scuola per imparare a costruire relazioni sociali ? In classe non si apprendono solo le materie, ma anche il modo di interagire con gli altri: rispetto, condivisione, collaborazione sono alcuni dei principi che dovrebbero ispirare lo stare in mezzo agli altri, in quella palestra di vita che è la scuola. Questo è vero ovviamente anche per quegli alunni che a causa di disabilità intellettive e/o relazionali si trovano in una condizione di difficoltà nel rapporto con i coetanei. Questo volume ha come scopo fornire ai docenti spunti utili per organizzare il lavoro quotidiano con gli allievi che si trovano in questa condizione di difficoltà. Così come per i precedenti volumi di questa collana, è auspicio degli autori ricevere dai docenti un feed-back riguardo alle proposte didattiche offerte.

Published
2017

5. Educazione Speciale 4. Motricità. Esercitare le abilità di base in studenti con disabilità intellettiva

Author

Arpinati A. M., Monetti L., Tasso D., POSAR, ANNIO, Arpinati A.M., Monetti L., Posar A., and Tasso D.

Subjects
Disabilità intellettiva, Motricità grossolana, Motricità fine, Scuola, Abilità cognitive, Educazione
Abstract

Educazione speciale 4: motricità è stato realizzato da un gruppo di lavoro di Associazione élève onlus, con la collaborazione di un esperto in neuroscienze. Il lavoro, rivolto inizialmente ai soli studenti con disabilità intellettiva, ha mostrato “sul campo” di essere utile a molti altri studenti con Bisogni Educativi speciali di diverso tipo. Il volume segue i tre precedenti, dedicati a Percezione, attenzione e memoria, Comunicazione e linguaggio, Abilità cognitive e competenze linguistiche; proseguendo l’impegno dell’associazione di volontariato di “esplorare” progressivamente i temi educativi proposti dagli “assi” del MIUR. La “motricità”, che è l’insieme di funzioni del sistema nervoso centrale e delle strutture corporee del movimento, è una delle nostre facoltà fondamentali, e si sviluppa dalla nascita contemporaneamente alle capacità cognitive e relazionali. Ogni “carenza”, “difficoltà”, o “ritardo” nell’acquisizione delle abilità motorie ha ripercussioni in un’ampia gamma di aspetti del nostro funzionamento complessivo. Di conseguenza deve avere lo spazio e l’attenzione doverosi in ogni progetto di abilitazione, rispondente alle specifiche esigenze della persona inserita in una struttura educativa. Il volume Educazione speciale 4: motricità, che è disponibile a colori e in toni di grigio nella versione on-line, ha richiesto particolare attenzione all’aspetto grafico e alle immagini, elaborate con competenza dal medesimo studio editoriale che ha curato i tre volumi precedenti. Il lavoro sulla motricità è diviso in due grandi aree: la motricità grossolana (movimenti di testa, busto e arti) e motricità fine (movimenti di mano, polso, braccio). Le attività da realizzare in queste due aree non richiedono particolari attrezzature, né intendono sovrapporsi a eventuali analoghi interventi di ambiti disciplinari del curricolo scolastico. C’è stato invece un impegno a progettare azioni, originali e efficaci, che coinvolgano sia le capacità motorie che cognitive, calibrate su specifiche difficoltà o disarmonie, presentandole in un’ampia gamma di situazioni. Oltre all’apparato introduttivo e giustificativo del lavoro e delle metodologie adottate, il volume offre numerosi materiali e supporti per la diagnosi iniziale e per la valutazione dei progressi. Come è ormai per noi consueto, le “proposte” sono volutamente degli “spunti” da applicare criticamente. A questo scopo gli autori sollecitano vivamente da parte degli insegnanti che utilizzeranno questi materiali la condivisione di esperienze, critiche e suggerimenti.

Published
2015

6. Educazione Speciale 3. Abilità cognitive e competenze linguistiche

Author

Arpinati A. M., Monetti L., Tasso D., POSAR, ANNIO, Arpinati A.M., Monetti L., Posar A., and Tasso D.

Subjects
Disabilità intellettiva, Comunicazione non verbale, Comunicazione verbale, Scuola, Abilità cognitive, Educazione
Abstract

In questo terzo volume della collana Educazione speciale, gli autori, membri di una associazione di volontariato, con il contributo di un esperto di neuroscienze, dirigono la loro attenzione sulla costruzione delle abilità cognitive indispensabili per ogni successivo sviluppo culturale. Associare, discriminare, seriare, raggruppare… sono le capacità che ci permettono di acquisire utili strumenti per l’orientamento e l’integrazione nel nostro mondo complesso (parti prima e quarta del volume: Gli oggetti che ci circondano e Classificare, mettere in ordine). Tutte potenzialità che, per chi manifesta qualche grado di disabilità intellettiva, è tanto più necessario edificare con un percorso strutturato, con attività e materiali appositamente progettati e sperimentati sul campo. Una parte del lavoro, la seconda e la quinta, è dedicata allo sviluppo delle abilità linguistiche (parlare, leggere, scrivere), completando quanto proposto in Educazione speciale 2, comunicazione e linguaggio. Ampio spazio infine è riservato ai concetti e alle strutture del “tempo” (terza parte). Dall’alternarsi del giorno e della notte, al flusso del tempo scandito da giorni, settimane, mesi, anni…fino all’uso degli strumenti di misura e referenza, come orologi, calendari, diari... Con una attenzione particolare rivolta alle esperienze personali e alle esigenze della vita quotidiana di bambini e ragazzi. Il volume, che è anche disponibile nella versione on-line (integrata da numerosi materiali aggiuntivi), ha richiesto particolare attenzione all’aspetto grafico e alle immagini, elaborate con competenza dallo stesso studio editoriale che ha curato i due volumi precedenti. Rivolto ai docenti, nelle sezioni introduttive e regolative, con un linguaggio e contenuti adeguati, presenta invece i materiali di lavoro in modo da renderli facilmente comprensibili e stimolanti per gli studenti a cui è rivolto. Molte delle attività prima della pubblicazione sono state sperimentate “volontariamente” sul campo dai docenti di un gruppo a suo tempo formato a questo scopo (Sperimentare insieme 13). Grazie alle loro preziose osservazioni e suggerimenti è stato possibile rivedere e meglio adattare numerose proposte di lavoro. A corredo delle attività, sono presenti Schede di verifica del percorso educativo.

Published
2014

7. Educazione Speciale 2. Comunicazione e linguaggio

Author

Arpinati A. M., Tasso D., POSAR, ANNIO, Arpinati A.M., Posar A., and Tasso D.

Subjects
Disabilità intellettiva, Comunicazione non verbale, Comunicazione verbale, Scuola, Educazione
Abstract

Comunicare è spesso la barriera più difficile da superare per bambini e ragazzi con disabilità intellettiva. Insegnare a comunicare rimane uno dei compiti più impegnativi per docenti curricolari, insegnanti di sostegno e educatori che operano con allievi con una limitazione nella comunicazione non verbale o verbale, nonostante le numerose tecniche elaborate nel corso degli anni e i più recenti strumenti tecnologici presenti sul mercato. Il volume presenta una proposta didattica articolata nelle aree: • Comunicazione non verbale; • Comunicazione verbale: - Parlare; - Leggere; - Scrivere. Il livello di partenza delle singole proposte è quello minimo: l’allievo mostra le potenzialità per apprendere quella abilità, ma ancora non ha compiuto i primi passi. O magari ha alle spalle una storia di tentativi improvvisati, disarticolati e infruttuosi. Il volume è organizzato come una guida per piccoli passi: ogni attività può durare anche pochi minuti e l’apprendimento va costruito con continuità nel tempo. Le diverse situazioni didattiche sono presentate in modo concreto, per stimolare l’attenzione e l’interesse dell’allievo. Per ogni attività sono proposte anche schede di verifica e suggerimenti per la valutazione dell’apprendimento. L’aspetto grafico, i caratteri, le immagini, i colori sono pensati per aderire alle speciali esigenze degli allievi e facilitare il compito del docente. Gran parte dei materiali presenti nell’opera sono stati sperimentati nella concreta realtà scolastica da docenti curricolari, insegnanti di sostegno o educatori. L’impostazione concettuale dell’intero lavoro ha avuto il riscontro di esperti in neuroscienze.

Published
2013

8. An asymmetry detected in the disk of Kappa CMa with the AMBER/VLTI

Author

Meilland, Anthony, Millour, Florentin, Stee, Philippe, Domiciano De Souza, Armando, Petrov, Romain, Mourard, Denis, Jankov, Slobodan, Robbe-Dubois, Sylvie, Spang, Alain, Arisitidi, Eric, Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Malbet, F., Perraut, K., Puget, P., Robbe-Dubois, S., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Arezki, B., Altariba, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Connot, C., Delboulbé, A., Domicinano De Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Gennari, S., Glentzlin, A., Giani, E., Gilinst, C., Heiden, M., Heininger, M., Hernandez, O., Hofmann, K.-H., Kamm, D., Kraus, S., Le Contel, D., Le Contel, J.-M., Lopez, B., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Millour, F., Monin, J.-L., Mouillet, D., Mourard, D., Mège, P., Nussbaum, E., Ohnaka, K., Pacini, F., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Roussel, A., Sacchettini, M., Salinari, P., Schertl, D., Solscheid, W., Stee, P., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Tatulli, E., Testi, L., Valtier, J.-C., Vannier, M., Ventura, N., Kiekebusch, M., Schöller, M., Laboratoire Gemini (LG), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Universitaire d'Astrophysique de Nice (LUAN), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Stars: emission-line, Astrophysics (astro-ph), Stars: individual (kappa CMa), FOS: Physical sciences, Be, Astrophysics, Techniques: high angular resolution, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Stars: Keplerian rotation, Techniques: interferometric, Stars: circumstellar matter, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

International audience; Aims. We study the geometry and kinematics of the circumstellar environment of the Be star Kappa CMa in the Br gamma emission line and its nearby continuum. Methods. We use the VLTI/AMBER instrument operating in the K band which provides a spatial resolution of about 6 mas with a spectral resolution of 1500 to study the kinematics within the disk and to infer its rotation law. In order to obtain more kinematical constraints we also use an high spectral resolution Pa beta line profile obtain in December 2005 at the Observatorio do Pico do Dios, Brazil and we compile V/R line profile variations and spectral energy distribution data points from the literature. Results. Using differential visibilities and differential phases across the Br gamma line we detect an asymmetry in the disk. Moreover, we found that kappa CMa seems difficult to fit within the classical scenario for Be stars, illustrated recently by alpha Arae observations, i.e. a fast rotating B star close to its breakup velocity surrounded by a Keplerian circumstellar disk with an enhanced polar wind. Finally we discuss the possibility for kappa CMa to be a critical rotator with a Keplerian rotating disk and try to see if the detected asymmetry can be interpreted within the "one-armed" viscous disk framework.

Published
2006
Full Text
View/download PDF

9. Disk and wind interaction in the young stellar object MWC 297 spatially resolved with VLTI/AMBER

Author

Malbet, F., Benisty, M., de Wit, W.J., Kraus, S., Meilland, A., Millour, F., Tatulli, E., Berger, J.P., Chesneau, O., Hofmann, K.H., Isella, A., Natta, A., Petrov, R., Preibisch, T., Stee, P., Testi, L., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Duvert, G., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Robbe-Dubois, S., Roussel, A., Zins, G., Accardo, M., Acke, B., Agabi, K., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Driebe, T., Dugué, M., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, Renaud, Fraix-Burnet, D., Gallardo, A., Gennari, S., Glentzlin, A., Giani, E., Gil, C., Heiden, M., Heininger, M., Kamm, D., Le Contel, D., Le Contel, J.-M., Lopez, B., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Monin, J.-L., Mouillet, D., Mourard, D., Mège, P., Nussbaum, E., Ohnaka, K., Pacheco, J., Pacini, F., Perrier, C., Puget, P., Rabbia, Y., Rebattu, S., Reynaud, François, Richichi, A., Sacchettini, M., Salinari, P., Schertl, D., Solscheid, W., Stefanini, P., Tallon, Michel, Tallon-Bosc, Isabelle, Tasso, D., Valtier, J.-C., Vannier, M., Ventura, N., Kiekebusch, M., Rantakyrö, F., Schöller, M., Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Radioastronomie (MPIFR), Laboratoire Gemini (LG), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Universitaire d'Astrophysique de Nice (LUAN), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), ONERA - The French Aerospace Lab [Châtillon], ONERA, Centre de Recherche Astrophysique de Lyon (CRAL), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Division technique INSU/SDU (DTI), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), European Southern Observatory (ESO), AMBER, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), ONERA-Université Paris Saclay (COmUE), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Protoplanetary disks, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Pre-main-sequence stars, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Planetary systems, Early-type stars, Emission-line stars, Accretion disks, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Infrared, Interferometric Techniques, Astrophysics::Galaxy Astrophysics
Abstract

The young stellar object MWC 297 has been observed with the VLT interferometer equipped with the AMBER instrument. MWC 297 has been spatially resolved in the continuum with a visibility of 0.50 as well as in the Br gamma emission line where the visibility decrease to a lower value of 0.33. This change in the visibility with the wavelength can be interpreted by the presence of an optically thick disk responsible for the visibility in the continuum and of a stellar wind traced by Br gamma and whose apparent size is 40% larger. We validate this interpretation by building a model of the stellar environment that combines a geometrically thin, optically thick accretion disk model consisting of gas and dust, and a latitude-dependent stellar wind outflowing above the disk surface. The continuum emission and visibilities obtained from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. A picture emerges in which MWC 297 is surrounded by an equatorial flat disk that is possibly still accreting and an outflowing wind which has a much higher velocity in the polar region than at the equator. [abridged], Comment: 13 pages; to be published in A&A; Acceptance day: 11/10/2005

Published
2005
Full Text
View/download PDF

10. Predictive value of the HIV paediatric classification system for the long-term course of perinatally infected children

Author

Wriiting Committee: Galli, Italian Register for HIV Infection in C. h. i. l. d. r. e. n., L, De Martino, Tovo, M, Gabiano, Pa, Zappa, C, Partecipants: Osimani, M., P, Mattia, De, Zizzadoro, D, Ruggeri, P, Baldi, M, Ciccia, F, Dallacasa, M, Masi, P, Battisti, M, Brescaini, L, Duse, E, Timpano, M, Chiriacò, S, Belloni, Pg, Corrias, M, Ibba, A, Rossi, P, Anastasio, G, Sabatino, E, Sticca, G, Nasi, M, Bezzi, C, Vierucci, T, Farina, A, Bellotti, S, Bassetti, S, D, Maria, De, Forni, A, Gotta, Gl, Marazzi, C, Mecca, Mg, Tasso, D, Tondo, L, Micheletti, U, Pinzani, E, Plebani, R, Rancilio, A, Riva, L, Salvini, E, Tornaghi, S, Zuccotti, R, Guarino, Gv, Pignata, A, Giaquinto, C, Rampon, C, Ruga, O, Romano, Em, Benaglia, A, Caselli, G, Maccabruni, D, Bassanetti, A, F, and Consolini, Rita

Published
2000

12. Interferometric data reduction with AMBER/VLTI. Principle, estimators, and illustration

Author

Tatulli, E., primary, Millour, F., additional, Chelli, A., additional, Duvert, G., additional, Acke, B., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kraus, S., additional, Malbet, F., additional, Mège, P., additional, Petrov, R. G., additional, Vannier, M., additional, Zins, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Dugué, M., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Weigelt, G., additional, Accardo, M., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Kamm, D., additional, Kiekebusch, M., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, and Ventura, N., additional

Published
2007
Full Text
View/download PDF

13. Optical configuration and analysis of the AMBER/VLTI instrument

Author

Robbe-Dubois, S., primary, Lagarde, S., additional, Petrov, R. G., additional, Lisi, F., additional, Beckmann, U., additional, Antonelli, P., additional, Bresson, Y., additional, Martinot-Lagarde, G., additional, Roussel, A., additional, Salinari, P., additional, Vannier, M., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Le Coarer, E., additional, Malbet, F., additional, Millour, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Tatulli, E., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delage, L., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, and Ventura, N., additional

Published
2007
Full Text
View/download PDF

14. Disk and wind interaction in the young stellar object MWC 297 spatially resolved with AMBER/VLTI

Author

Malbet, F., primary, Benisty, M., additional, de Wit, W.-J., additional, Kraus, S., additional, Meilland, A., additional, Millour, F., additional, Tatulli, E., additional, Berger, J.-P., additional, Chesneau, O., additional, Hofmann, K.-H., additional, Isella, A., additional, Natta, A., additional, Petrov, R. G., additional, Preibisch, T., additional, Stee, P., additional, Testi, L., additional, Weigelt, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Kamm, D., additional, Kiekebusch, M., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional

Published
2007
Full Text
View/download PDF

15. AMBER, the near-infrared spectro-interferometric three-telescope VLTI instrument

Author

Petrov, R. G., primary, Malbet, F., additional, Weigelt, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Millour, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Salinari, P., additional, Tatulli, E., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional

Published
2007
Full Text
View/download PDF

16. An asymmetry detected in the disk of κ Canis Majoris with AMBER/VLTI

Author

Meilland, A., primary, Millour, F., additional, Stee, P., additional, Domiciano de Souza, A., additional, Petrov, R. G., additional, Mourard, D., additional, Jankov, S., additional, Robbe-Dubois, S., additional, Spang, A., additional, Aristidi, E., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Malbet, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Roussel, A., additional, Tatulli, E., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional

Published
2006
Full Text
View/download PDF

17. Direct constraint on the distance of γ2 Velorum from AMBER/VLTI observations

Author

Millour, F., primary, Petrov, R. G., additional, Chesneau, O., additional, Bonneau, D., additional, Dessart, L., additional, Bechet, C., additional, Tallon-Bosc, I., additional, Tallon, M., additional, Thiébaut, E., additional, Vakili, F., additional, Malbet, F., additional, Mourard, D., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Tatulli, E., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tasso, D., additional, Testi, L., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional

Published
2006
Full Text
View/download PDF

18. Near-infrared interferometry of η Carinae with spectral resolutions of 1 500 and 12 000 using AMBER/VLTI

Author

Weigelt, G., primary, Kraus, S., additional, Driebe, T., additional, Petrov, R. G., additional, Hofmann, K.-H., additional, Millour, F., additional, Chesneau, O., additional, Schertl, D., additional, Malbet, F., additional, Hillier, D. J., additional, Gull, T., additional, Davidson, K., additional, Domiciano de Souza, A., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Tatulli, E., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Kamm, D., additional, Kiekebusch, M., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, Ventura, N., additional, Weis, K., additional, and Wittkowski, M., additional

Published
2006
Full Text
View/download PDF

19. Constraining the wind launching region in Herbig Ae stars: AMBER/VLTI spectroscopy of HD 104237

Author

Tatulli, E., primary, Isella, A., additional, Natta, A., additional, Testi, L., additional, Marconi, A., additional, Malbet, F., additional, Stee, P., additional, Petrov, R. G., additional, Millour, F., additional, Chelli, A., additional, Duvert, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Dugué, M., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional

Published
2006
Full Text
View/download PDF

20. Direct constraint on the distance of γ2Velorum from AMBER/VLTI observations*

Author

Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tasso, D., Testi, L., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tasso, D., Testi, L., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.

Abstract

Context.Interferometry can provide spatially resolvedobservations of massive star binary systems and their colliding winds, which thus far have been studied mostly with spatially unresolvedobservations.

Published
2007
Full Text
View/download PDF

21. Constraining the wind launching region in Herbig Ae stars: AMBER/VLTI spectroscopy of HD 104237 *

Author

Tatulli, E., Isella, A., Natta, A., Testi, L., Marconi, A., Malbet, F., Stee, P., Petrov, R. G., Millour, F., Chelli, A., Duvert, G., Antonelli, P., Beckmann, U., Bresson, Y., Dugué, M., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Tatulli, E., Isella, A., Natta, A., Testi, L., Marconi, A., Malbet, F., Stee, P., Petrov, R. G., Millour, F., Chelli, A., Duvert, G., Antonelli, P., Beckmann, U., Bresson, Y., Dugué, M., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.

Abstract

Aims.We investigate the origin of the ${\rm Br}\gamma$emission of the Herbig Ae star HD 104237 on Astronomical Unit (AU) scales.

Published
2007
Full Text
View/download PDF

22. Disk and wind interaction in the young stellar object MWC 297spatially resolved with AMBER/VLTI *

Author

Malbet, F., Benisty, M., de Wit, W.-J., Kraus, S., Meilland, A., Millour, F., Tatulli, E., Berger, J.-P., Chesneau, O., Hofmann, K.-H., Isella, A., Natta, A., Petrov, R. G., Preibisch, T., Stee, P., Testi, L., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Malbet, F., Benisty, M., de Wit, W.-J., Kraus, S., Meilland, A., Millour, F., Tatulli, E., Berger, J.-P., Chesneau, O., Hofmann, K.-H., Isella, A., Natta, A., Petrov, R. G., Preibisch, T., Stee, P., Testi, L., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.

Abstract

The young stellar object MWC 297is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a strong near-infrared continuum excess. This object has been observed with the VLT interferometer equipped with the AMBER instrument during its first commissioning run. AMBER/VLTI is currently the only near infrared interferometer that can observe spectrally dispersed visibilities. MWC 297has been spatially resolved in the continuum with a visibility of $0.50^{+0.08}_{-0.10}$as well as in the Brγemission line where the visibility decreases to $0.33\pm0.06$. This change in the visibility with wavelength can be interpreted by the presence of an optically thick disk responsible for the visibility in the continuum and of a stellar wind traced by the Brγemission line and whose apparent size is 40% larger. We validate this interpretation by building a model of the stellar environment that combines a geometrically thin, optically thick accretion disk model consisting of gas and dust, and a latitude-dependent stellar wind outflowing above the disk surface. The continuum emission and visibilities obtained from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. We also reproduce the shape of the visibilities in the Brγline as well as the profile of this line obtained at an higher spectral resolution with the VLT/ISAAC spectrograph, and those of the Hαand Hβlines. The disk and wind models yield a consistent inclination of the system of approximately 20°. A picture emerges in which MWC 297is surrounded by an equatorial flat disk that is possibly still accreting and an outflowing wind that has a much higher velocity in the polar region than at the equator. The AMBER/VLTI unique capability of measuring spectral visibilities therefore allows us for the first time to compare the apparent geometry of a wind with the disk structure in a young stellar system.

Published
2007
Full Text
View/download PDF

23. Near-infrared interferometry of ηCarinaewith spectral resolutions of 1 500 and 12 000 using AMBER/VLTI*

Author

Weigelt, G., Kraus, S., Driebe, T., Petrov, R. G., Hofmann, K.-H., Millour, F., Chesneau, O., Schertl, D., Malbet, F., Hillier, D. J., Gull, T., Davidson, K., Domiciano de Souza, A., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Weis, K., Wittkowski, M., Weigelt, G., Kraus, S., Driebe, T., Petrov, R. G., Hofmann, K.-H., Millour, F., Chesneau, O., Schertl, D., Malbet, F., Hillier, D. J., Gull, T., Davidson, K., Domiciano de Souza, A., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Weis, K., and Wittkowski, M.

Abstract

Aims.We present the first NIR spectro-interferometryof the LBV ηCarinae. The observations were performed with the AMBER instrument of the ESO Very Large Telescope Interferometer(VLTI) using baselines from 42 to 89 m. The aim of this work is to study the wavelength dependence of ηCar's optically thick wind region with a high spatial resolution of 5 mas (11 AU) and high spectral resolution.

Published
2007
Full Text
View/download PDF

24. An asymmetry detected in the disk of κCanis Majoriswith AMBER/VLTI *

Author

Meilland, A., Millour, F., Stee, P., Domiciano de Souza, A., Petrov, R. G., Mourard, D., Jankov, S., Robbe-Dubois, S., Spang, A., Aristidi, E., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Malbet, F., Perraut, K., Puget, P., Rantakyrö, F., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Meilland, A., Millour, F., Stee, P., Domiciano de Souza, A., Petrov, R. G., Mourard, D., Jankov, S., Robbe-Dubois, S., Spang, A., Aristidi, E., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Malbet, F., Perraut, K., Puget, P., Rantakyrö, F., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.

Abstract

Aims.We study the geometry and kinematics of the circumstellar environment of the Be star κCMa in the Brγemission line and its nearby continuum.

Published
2007
Full Text
View/download PDF

25. Sex Pheromone Mediates Resource Partitioning Between Drosophila melanogaster and D. suzukii .

Author

Kwadha CA, Rehermann G, Tasso D, Fellous S, Bengtsson M, Wallin EA, Flöhr A, Witzgall P, and Becher PG

Abstract

The spotted-wing drosophila, Drosophila suzukii and the cosmopolitan vinegar fly D. melanogaster feed on soft fruit and berries and widely overlap in geographic range. The presence of D. melanogaster reduces egg-laying in D. suzukii , possibly because D. melanogaster outcompetes D. suzukii larvae feeding in the same fruit substrate. Flies use pheromones to communicate for mating, but pheromones also serve a role in reproductive isolation between related species. We asked whether a D. melanogaster pheromone also modulates oviposition behaviour in D. suzukii . A dual-choice oviposition assay confirms that D. suzukii lays fewer eggs on blueberries exposed to D. melanogaster flies and further shows that female flies have a stronger effect than male flies. This was corroborated by treating berries with synthetic pheromones. Avoidance of D. suzukii oviposition is mediated by the female D. melanogaster pheromone ( Z )-4-undecenal (Z4-11Al). Significantly fewer eggs were laid on berries treated with synthetic Z4-11Al. In comparison, the male pheromone ( Z )-11-octadecenyl acetate (cVA) had no effect on D. suzukii oviposition. Z4-11Al is a highly volatile compound that is perceived via olfaction and it is accordingly behaviourally active at a distance from the source. D. suzukii is known to engage in mutual niche construction with the yeast Hanseniaspora uvarum , which strongly attracts flies. Adding Z4-11Al to fermenting H. uvarum significantly decreased D. suzukii flight attraction in a laboratory wind tunnel and a field trapping assay. That a D. melanogaster pheromone regulates oviposition in D. suzukii demonstrates that heterospecific pheromone communication contributes to reproductive isolation and resource partitioning in cognate species. Stimulo-deterrent diversion or push-pull methods, building on combined use of attractant and deterrent compounds, have shown promise for control of D. suzukii . A pheromone that specifically reduces D. suzukii attraction and oviposition adds to the toolbox for D. suzukii integrated management., Competing Interests: The authors declare no conflicts of interest., (© 2024 The Author(s). Evolutionary Applications published by John Wiley & Sons Ltd.)

Published
2024
Full Text
View/download PDF

26. A Rare Case of Rectal Squamous Cell Carcinoma Treated with Nigro Protocol.

Author

Chaudhry H, Sandhu S, Tasso D, and Prajapati D

Abstract

Squamous cell carcinoma (SCC) of the rectum is a rare malignancy, and the optimal treatment strategy remains unknown. Cases are limited in the literature, and although historically treated with surgical resection, more recent cases have suggested success with chemotherapy. Although Nigro protocol was initially developed for anal SCC, we present a case of rectal SCC successfully treated with the Nigro protocol. Our case supports the use of chemoradiotherapy as initial treatment for rectal SCC over surgery., Competing Interests: Conflict of interest The authors declare that there is no conflict of interest regarding the publication of this article., (© 2022 Greater Baltimore Medical Center.)

Published
2022
Full Text
View/download PDF

27. Immunohistochemical ALK Expression in Granular Cell Atypical Fibroxanthoma: A Diagnostic Pitfall for ALK-Rearranged Non-neural Granular Cell Tumor.

Author

Brown RA, Cloutier JM, Bahrani E, Liman A, Tasso D, Palmer A, Manning MA, Galperin I, Rieger KE, Novoa RA, Lau H, and Louie CY

Subjects
Aged, Aged, 80 and over, Anaplastic Lymphoma Kinase genetics, Gene Rearrangement, Granular Cell Tumor genetics, Granular Cell Tumor pathology, Head and Neck Neoplasms genetics, Head and Neck Neoplasms pathology, Humans, Immunohistochemistry, Male, Skin Neoplasms genetics, Skin Neoplasms pathology, Xanthomatosis pathology, Anaplastic Lymphoma Kinase metabolism, Granular Cell Tumor metabolism, Head and Neck Neoplasms metabolism, Scalp, Skin Neoplasms metabolism, Xanthomatosis metabolism
Abstract

Abstract: Atypical fibroxanthoma (AFX) is a neoplasm that most commonly occurs on sun-damaged skin of the head and neck in elderly patients and that usually exhibits indolent clinical behavior with complete excision. The granular cell variant of AFX demonstrates overlapping histopathologic features with dermal non-neural granular cell tumor (NNGCT), which typically arises on the extremities of young to middle aged adults with rare reports of regional metastasis. A subset of NNGCT harbors ALK rearrangements and expresses ALK by immunohistochemistry. Here, we present 2 cases of granular cell AFX occurring on the scalp of males aged 73 and 87 with ALK expression by immunohistochemistry and no evidence of an ALK rearrangement on fluorescence in situ hybridization, representing a diagnostic pitfall for NNGCT., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

Published
2021
Full Text
View/download PDF

28. Primary Adrenal Angiosarcoma: A Rare and Potentially Misdiagnosed Tumor.

Author

Grajales-Cruz A, Baco-Viera F, Rive-Mora E, Ramirez-Tanchez C, Tasso D, Arroyo-Portela N, Calderon E, Padua-Octaviani IJ, and Caceres-Perkins W

Subjects
Adrenal Gland Neoplasms drug therapy, Adrenal Gland Neoplasms metabolism, Aged, Biomarkers, Tumor metabolism, Chemotherapy, Adjuvant methods, Hemangiosarcoma drug therapy, Hemangiosarcoma metabolism, Humans, Male, Adrenal Gland Neoplasms diagnosis, Hemangiosarcoma diagnosis
Abstract

A man aged 69 years presented with acute right flank pain secondary to a hemorrhagic large adrenal tumor. En bloc resection was performed to repair the inferior vena cava. Immunoperoxidase levels in the tumor were positive for factor VIII and CD31 and negative for S100, protein Melan-A, CD34, synaptophysin, chromogranin, desmin, muscle specific actin, ETFA (EMA), KRT20 (CK20), CDX2, TTF1, LNPEP (PLAP), inhibin, ?-fetoprotein, CD30, hepatocyte paraffin, and aberrant expression of cytokeratin 7 and pankeratin. The pathological diagnosis was consistent with adrenal angiosarcoma. Obtaining appropriate immunoperoxidase stains and multidisciplinary evaluation helped make the diagnosis of this rare adrenal tumor and determine its management. The patient had an uneventful postoperative course and completed 4 cycles of adjuvant chemotherapy with doxorubicin/ifosfamide and adequately tolerated the treatment. However, positive surgical margins were found, so he was referred to radiation oncology specialists for possible adjuvant radiotherapy to the surgical bed. Weeks after the first initiation of therapy, the patient presented to the emergency department complaining of shortness of breath, fatigue, and generalized weakness for 3 days. He was admitted and found to have new-onset anemia and a new-onset, large, right pleural effusion. Thoracentesis performed showed sanguinolent fluid that, after microscopic evaluation, was suggestive of recurrent malignancy. Thoracic aortography performed with subselective catheterization to several arteries (right bronchial, right phrenic, and right renal arteries) did not show any active bleeding. However, the right inferior intercostal and adrenal arteries were presumed to be the reason for the bleeding event, so they were embolized until stasis. The patient remained hemodynamically unstable but eventually experienced multiorgan failure. In spite of aggressive measures, he died 10 days after admission to the hospital.

Published
2017
Full Text
View/download PDF

29. Case Report: Unusual Manifestation of KIT Negative Systemic Mastocytosis.

Author

Cáceres-Nazario B, Cáceres-Perkins W, Tasso D, Calderón-Alicea E, Conde-Sterling D, and Arroyo-Portela N

Abstract

Aggressive systemic mastocytosis is a rare hematologic neoplastic disease that presents with a poor prognosis and low survival rate. It typically manifests with symptoms associated to mast cell release of bioactive substances, causing anaphylaxis, flushing, autonomic and hemodynamic instability, gastric distress and headache. Moreover, more than 95% of cases are related to a mutation in codon 816 of the KIT gene, located on human chromosome 4q12 which codes for a type III receptor tyrosine kinase. We present a 78 year-old Hispanic man diagnosed with the aggressive subtype of systemic mastocytosis, who had an atypical manifestation and a KIT negative variant. The diagnosis was confirmed based on pathologic and serologic findings which included mast cell infiltration of the spleen and bone marrow, malignant ascites and an unusually elevated serum tryptase.

Published
2016

Catalog

Books, media, physical & digital resources
See catalog results