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1. VizieR Online Data Catalog: Distance of HiGAL sources (Mege+, 2021)

Author

Mège, P., Russeil, D., Zavagno, Annie, Elia, D., Molinari, S., Brunt, C.~m., Butora, R., Cambresy, L., Di, Giorgio A.~m., Fenouillet, T., Fukui, Y., Lambert, J.~c., Makai, Z., Merello, M., Meunier, J.~c., Molinaro, M., Moreau, C., Pezzuto, S., Poulin, Y., Schisano, E., Schuller, F., Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Roma (OAR), Istituto Nazionale di Astrofisica (INAF), Istituto di Astrofisica e Planetologia Spaziali - INAF (IAPS), Observatoire astronomique de Strasbourg (ObAS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of Astrophysics [Nagoya], Nagoya University, West Virginia University [Morgantown], Departamento de Astronomia (DAS), INAF - Osservatorio Astronomico di Trieste (OAT), Environnement, Ville, Société (EVS), École normale supérieure de Lyon (ENS de Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS), and Max-Planck-Institut für Radioastronomie (MPIFR)

Subjects
Milky Way, Radial velocities, [SDU]Sciences of the Universe [physics], Molecular clouds, Stars: distances
Abstract

Velocity and Distance of HiGAL sources. \\\\(2 data files).

Published
2020

2. The Hi-GAL compact source catalogue – I. The physical properties of the clumps in the inner Galaxy (−71⋅º 0 < ℓ < 67⋅º 0)

Author

Elia, D, Molinari, S, Schisano, E, Pestalozzi, M, Pezzuto, S, Merello, M, Noriega-Crespo, A, Moore, TJT, Russeil, D, Mottram, JC, Paladini, R, Strafella, F, Benedettini, M, Bernard, JP, Di Giorgio, A, Eden, DJ, Fukui, Y, Plume, R, Bally, J, Martin, PG, Ragan, SE, Jaffa, SE, Motte, F, Olmi, L, Schneider, N, Testi, L, Wyrowski, F, Zavagno, A, Calzoletti, L, Faustini, F, Natoli, P, Palmeirim, P, Piacentini, F, Piazzo, L, Pilbratt, GL, Polychroni, D, Baldeschi, A, Beltrán, MT, Billot, N, Cambrésy, L, Cesaroni, R, García-Lario, P, Hoare, MG, Huang, M, Joncas, G, Liu, SJ, Maiolo, BMT, Marsh, KA, Maruccia, Y, Mège, P, Peretto, N, Rygl, KLJ, Schilke, P, Thompson, MA, Traficante, A, Umana, G, Veneziani, M, Ward-Thompson, D, Whitworth, AP, Arab, H, Bandieramonte, M, Becciani, U, Brescia, M, Buemi, C, Bufano, F, Butora, R, Cavuoti, S, Costa, A, Fiorellino, E, Hajnal, A, Hayakawa, T, Kacsuk, P, Leto, P, Li Causi, G, Marchili, N, Martinavarro-Armengol, S, Mercurio, A, Molinaro, M, Riccio, G, Sano, H, Sciacca, E, Tachihara, K, Torii, K, Trigilio, C, Vitello, F, and Yamamoto, H

Subjects
Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Hi-GAL (Herschel InfraRed Galactic Plane Survey) is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 μm. We present a band-merged catalogue of spatially matched sources and their properties derived from fits to the spectral energy distributions (SEDs) and heliocentric distances, based on the photometric catalogues presented in Molinari et al., covering the portion of Galactic plane −71⋅º0 < ℓ < 67⋅º0. The band-merged catalogue contains 100 922 sources with a regular SED, 24 584 of which show a 70-μm counterpart and are thus considered protostellar, while the remainder are considered starless. Thanks to this huge number of sources, we are able to carry out a preliminary analysis of early stages of star formation, identifying the conditions that characterize different evolutionary phases on a statistically significant basis. We calculate surface densities to investigate the gravitational stability of clumps and their potential to form massive stars. We also explore evolutionary status metrics such as the dust temperature, luminosity and bolometric temperature, finding that these are higher in protostellar sources compared to pre-stellar ones. The surface density of sources follows an increasing trend as they evolve from pre-stellar to protostellar, but then it is found to decrease again in the majority of the most evolved clumps. Finally, we study the physical parameters of sources with respect to Galactic longitude and the association with spiral arms, finding only minor or no differences between the average evolutionary status of sources in the fourth and first Galactic quadrants, or between ‘on-arm’ and ‘interarm’ positions.

Published
2017

3. The spatial distribution of star formation related to ionized regions throughout the Inner Galactic Plane

Author

Palmeirim, P, Zavagno, A, Elia, D, Moore, TJT, Whitworth, A, Tremblin, P, Traficante, A, Merello, M, Russeil, D, Pezzuto, S, Cambresy, L, Baldeschi, A, Bandiermonte, M, Becciani, U, Benedettini, M, Buemi, C, Bufano, F, Bulpitt, A, Butora, R, Carey, D, Costa, A, Deharveng, L, Di Girogio, A, Eden, D, Hajnal, A, Hoare, M, Kacsuk, P, Leto, P, Marsh, K, Mege, P, Molinari, M, Molinaro, M, Noriega-Crespo, A, Schisano, E, Sciacca, E, Trigilio, C, Umana, G, and Vitello, F

Subjects
Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

We present a comprehensive statistical analysis of star-forming objects located in the vicinities of 1 360 bubble structures throughout the Galactic Plane and their local environments. The compilation of ∼70 000 star-forming sources, found in the proximity of the ionized (Hii) regions, detected in both Hi-GAL and GLIMPSE surveys, provided a broad overview of the different evolutionary stages of star-formation in bubbles, from prestellar objects to more evolved Young Stellar Objects (YSOs). Surface density maps of star-forming objects clearly reveal an evolutionary trend where more evolved star-forming objects (Class II YSO candidates) are found spatially located near the center, while younger star-forming objects are found at the edge of the bubbles. We derived dynamic ages for a sub-sample of 182 H ii regions for which kinematic distances and radio continuum flux measurements were available. We detect approximately 80% more star-forming sources per unit area in the direction of bubbles compared with the surrounding fields. We estimate the Clump Formation Efficiency (CFE) of Hi-GAL clumps in the direction of the shell of the bubbles to be ∼ 10%, around twice the value of the CFE in fields not affected by feedback effects. We find that the higher values of CFE is mostly due to the higher CFE of protostellar clumps, in particular in younger bubbles for which the density of the bubble shells is higher. We argue that the formation rate from prestellar to protostellar phase is probably higher during the early stages of the (H ii ) bubble expansion. Furthermore, we also find a higher fraction of massive YSOs (MYSOs) in bubbles at the early stages of expansion (< 2 Myr) than older bubbles. Evaluation of the fragmentation time inside the shell of bubbles advocate for the pre-existence of clumps in the medium prior to the bubble expansion in order to explain the formation of MYSOs in the youngest H ii regions (< 1 Myr), as supported by numerical simulations. Approximately 23% of Hi-GAL clumps are found located in the direction of a bubble, with 15% for prestellar clumps and 41% for protostellar clumps. We argue that the high fraction of protostellar clumps may be due to the acceleration of the star-formation process cause by the feedback of the (H ii ) bubbles.

Published
2017

4. Properties of Hi-GAL clumps in the inner Galaxy]{The Hi-GAL compact source catalogue. I. The physical properties of the clumps in the inner Galaxy ($-71.0^{\circ}< \ell < 67.0^{\circ}$)

Author

Elia, D., Molinari, S., Schisano, E., Pestalozzi, M., Pezzuto, S., Merello, M., Noriega-Crespo, A., Moore, T. J. T., Russeil, D., Mottram, J. C., Paladini, R., Strafella, F., Benedettini, M., Bernard, J. P., Di Giorgio, A., Eden, D. J., Fukui, Y., Plume, R., Bally, J., Martin, P. G., Ragan, S. E., Jaffa, S. E., Motte, F., Olmi, L., Schneider, N., Testi, L., Wyrowski, F., Zavagno, A., Calzoletti, L., Faustini, F., Natoli, P., Palmerim, P., Piacentini, F., Piazzo, L., Pilbratt, G. L., Polychroni, D., Baldeschi, A., Beltrán, M. T., Billot, N., Cambrésy, L., Cesaroni, R., García-Lario, P., Hoare, M. G., Huang, M., Joncas, G., Liu, S. J., Maiolo, B. M. T., Marsh, K. A., Maruccia, Y., Mège, P., Peretto, N., Rygl, K. L. J., Schilke, P., Thompson, M. A., Traficante, A., Umana, G., Veneziani, M., Ward-Thompson, D., Whitworth, A. P., Arab, H., Bandieramonte, M., Becciani, U., Brescia, M., Buemi, C., Bufano, F., Butora, R., Cavuoti, S., Costa, A., Fiorellino, E., Hajnal, A., Hayakawa, T., Kacsuk, P., Leto, P., Causi, G. Li, Marchili, N., Martinavarro-Armengol, S., Mercurio, A., Molinaro, M., Riccio, G., Sano, H., Sciacca, E., Tachihara, K., Torii, K., Trigilio, C., Vitello, F., and Yamamoto, H.

Subjects
Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics::Galaxy Astrophysics
Abstract

Hi-GAL is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 $\mu$m. We present a band-merged catalogue of spatially matched sources and their properties derived from fits to the spectral energy distributions (SEDs) and heliocentric distances, based on the photometric catalogs presented in Molinari et al. (2016a), covering the portion of Galactic plane $-71.0^{\circ}< \ell < 67.0^{\circ}$. The band-merged catalogue contains 100922 sources with a regular SED, 24584 of which show a 70 $\mu$m counterpart and are thus considered proto-stellar, while the remainder are considered starless. Thanks to this huge number of sources, we are able to carry out a preliminary analysis of early stages of star formation, identifying the conditions that characterise different evolutionary phases on a statistically significant basis. We calculate surface densities to investigate the gravitational stability of clumps and their potential to form massive stars. We also explore evolutionary status metrics such as the dust temperature, luminosity and bolometric temperature, finding that these are higher in proto-stellar sources compared to pre-stellar ones. The surface density of sources follows an increasing trend as they evolve from pre-stellar to proto-stellar, but then it is found to decrease again in the majority of the most evolved clumps. Finally, we study the physical parameters of sources with respect to Galactic longitude and the association with spiral arms, finding only minor or no differences between the average evolutionary status of sources in the fourth and first Galactic quadrants, or between "on-arm" and "inter-arm" positions., Comment: Accepted by MNRAS

Published
2017

5. The Hi-GAL compact source catalogue - I. The physical properties of the clumps in the inner Galaxy (-71.degrees 0 < l < 67.degrees 0)

Author

Elia, D, Molinari, S, Schisano, E, Pestalozzi, M, Pezzuto, S, Merello, M, Noriega-Crespo, A, Moore, Tjt, Russeil, D, Mottram, Jc, Paladini, R, Strafella, F, Benedettini, M, Bernard, Jp, Di Giorgio, A, Eden, Dj, Fukui, Y, Plume, R, Bally, J, Martin, Pg, Ragan, Se, Jaffa, Se, Motte, F, Olmi, L, Schneider, N, Testi, L, Wyrowski, F, Zavagno, A, Calzoletti, L, Faustini, F, Natoli, P, Palmeirim, P, Piacentini, F, Piazzo, L, Pilbratt, Gl, Polychroni, D, Baldeschi, A, Beltran, Mt, Billot, N, Cambresy, L, Cesaroni, R, Garcia-Lario, P, Hoare, Mg, Huang, M, Joncas, G, Liu, Sj, Maiolo, Bmt, Marsh, Ka, Maruccia, Y, Mege, P, Peretto, N, Rygl, Klj, Schilke, P, Thompson, Ma, Traficante, A, Umana, G, Veneziani, M, Ward-Thompson, D, Whitworth, Ap, Arab, H, Bandieramonte, M, Becciani, U, Brescia, M, Buemi, C, Bufano, F, Butora, R, Cavuoti, S, Costa, A, Fiorellino, E, Hajnal, A, Hayakawa, T, Kacsuk, P, Leto, P, Causi, Gl, Marchili, N, Martinavarro-Armengol, S, Mercurio, A, Molinaro, M, Riccio, G, Sano, H, Sciacca, E, Tachihara, K, Torii, K, Trigilio, C, Vitello, F, and Yamamoto, H

Subjects
Infrared: ISM, extinction, Space and Planetary Science, Dust, Astronomy and Astrophysics, Catalogues, Dust, extinction, ISM: clouds, Local interstellar matter, Submillimetre: ISM, NO
Published
2017

6. The Hi-GAL compact source catalogue I. The physical properties of the clumps in the inner Galaxy (-71. < l < 67 )

Author

Elia, Davide, Molinari, S., Schisano, E., Pestalozzi, M., Pezzuto, S., Merello, M., Noriega crespo, A., Moore, T. J. T., Russeil, D., Mottram, J. C., Paladini, Ruggero, Strafella, F., Benedettini, MARIA GILDA, Bernard, J. P., Di Giorgio, A., Eden, D. J., Fukui, Y., Plume, R., Bally, J., Martin, P. G., Ragan, S. E., Jaffa, S. E., Motte, F., Olmi, L., Schneider, N., Testi, L., Wyrowski, F., Zavagno, A., Calzoletti, L., Faustini, F., Natoli, P., Palmeirim, P., Piacentini, Francesco, Piazzo, Lorenzo, Pilbratt, G. L., Polychroni, D., Baldeschi, Adriano, Beltrã¡n, M. T., Billot, N., Cambrã©sy, L., Cesaroni, R., Garcã­a lario, P., Hoare, M. G., Huang, Meiling, Joncas, G., Liu, S. J., Maiolo, B. M. T., Marsh, K. A., Maruccia, Y., Mãge, P., Peretto, N., Rygl, K. L. J., Schilke, P., Thompson, M. A., Traficante, A., Umana, G., Veneziani, Marcella, Ward thompson, D., Whitworth, A. P., Arab, H., Bandieramonte, M., Becciani, U., Brescia, M., Buemi, C., Bufano, F., Butora, R., Cavuoti, S., Costa, A., Fiorellino, Eleonora, Hajnal, A., Hayakawa, T., Kacsuk, P., Leto, P., Li Causi, G., Marchili, N., Martinavarro armengol, S., Mercurio, A., Molinaro, Mario, Riccio, G., Sano, H., Sciacca, E., Tachihara, K., Torii, K., Trigilio, C., Vitello, F., and Yamamoto, H.

Subjects
Infrared: ISM, extinction, Space and Planetary Science, Dust, Astronomy and Astrophysics, Catalogues, Dust, extinction, ISM: clouds, Local interstellar matter, Submillimetre: ISM
Published
2017

7. Properties of Hi-GAL clumps in the inner Galaxy]{The Hi-GAL compact source catalogue. I. The physical properties of the clumps in the inner Galaxy ($-71.0^{\circ}< \ell < 67.0^{\circ}$)

Author

Elia, D., Molinari, S., Schisano, E., Pestalozzi, M., Pezzuto, S., Merello, M., Noriega-Crespo, A., Moore, T. J. T., Russeil, D., Mottram, J. C., Paladini, R., Strafella, F., Benedettini, M., Bernard, J. P., Di Giorgio, A., Eden, D. J., Fukui, Y., Plume, R., Bally, J., Martin, P. G., Ragan, S. E., Jaffa, S. E., Motte, F., Olmi, L., Schneider, N., Testi, L., Wyrowski, F., Zavagno, A., Calzoletti, L., Faustini, F., Natoli, P., Palmerim, P., Piacentini, F., Piazzo, L., Pilbratt, G. L., Polychroni, D., Baldeschi, A., Beltr��n, M. T., Billot, N., Cambr��sy, L., Cesaroni, R., Garc��a-Lario, P., Hoare, M. G., Huang, M., Joncas, G., Liu, S. J., Maiolo, B. M. T., Marsh, K. A., Maruccia, Y., M��ge, P., Peretto, N., Rygl, K. L. J., Schilke, P., Thompson, M. A., Traficante, A., Umana, G., Veneziani, M., Ward-Thompson, D., Whitworth, A. P., Arab, H., Bandieramonte, M., Becciani, U., Brescia, M., Buemi, C., Bufano, F., Butora, R., Cavuoti, S., Costa, A., Fiorellino, E., Hajnal, A., Hayakawa, T., Kacsuk, P., Leto, P., Causi, G. Li, Marchili, N., Martinavarro-Armengol, S., Mercurio, A., Molinaro, M., Riccio, G., Sano, H., Sciacca, E., Tachihara, K., Torii, K., Trigilio, C., Vitello, F., and Yamamoto, H.

Subjects
Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Hi-GAL is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 $��$m. We present a band-merged catalogue of spatially matched sources and their properties derived from fits to the spectral energy distributions (SEDs) and heliocentric distances, based on the photometric catalogs presented in Molinari et al. (2016a), covering the portion of Galactic plane $-71.0^{\circ}< \ell < 67.0^{\circ}$. The band-merged catalogue contains 100922 sources with a regular SED, 24584 of which show a 70 $��$m counterpart and are thus considered proto-stellar, while the remainder are considered starless. Thanks to this huge number of sources, we are able to carry out a preliminary analysis of early stages of star formation, identifying the conditions that characterise different evolutionary phases on a statistically significant basis. We calculate surface densities to investigate the gravitational stability of clumps and their potential to form massive stars. We also explore evolutionary status metrics such as the dust temperature, luminosity and bolometric temperature, finding that these are higher in proto-stellar sources compared to pre-stellar ones. The surface density of sources follows an increasing trend as they evolve from pre-stellar to proto-stellar, but then it is found to decrease again in the majority of the most evolved clumps. Finally, we study the physical parameters of sources with respect to Galactic longitude and the association with spiral arms, finding only minor or no differences between the average evolutionary status of sources in the fourth and first Galactic quadrants, or between "on-arm" and "inter-arm" positions., Accepted by MNRAS

Published
2017
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8. Advanced Environment for Knowledge Discovery in the ViaLactea Project

Author

Becciani U., Bandieramonte M., Brescia M., Butora R., Cavuoti S., Costa A., di Giorgio A. M., Elia D., Hajnal A., Kacsuk P. and Liu S. J., Mercurio A., Molinari S., Molinaro M., Riccio G., Schisano E., Sciacca E., Smareglia R., Vitello F., Lorente, NPF and Shortridge, K and Wayth, R, Becciani, U., Bandieramonte, M., Brescia, M., Butora, R., Cavuoti, S., Costa, A., di Giorgio, A. M., Elia, D., Hajnal, A., Kacsuk, P. and Liu S. J., Mercurio, A., Molinari, S., Molinaro, M., Riccio, G., Schisano, E., Sciacca, E., Smareglia, R., and Vitello, F.

Abstract

The VIALACTEA project aims at building a predictive model of star formation in our galaxy. We present the innovative integrated framework and the main technologies and methodologies to reach this ambitious goal.

Published
2015
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10. VIALACTEA knowledge base homogenizing access to Milky Way data

Author

Molinaro, M, Butora, R, Bandieramonte, M, Becciani, U, Brescia, M, Hajnal, Ákos, Herman, Gábor, and Kacsuk, Péter

Subjects
QA75 Electronic computers. Computer science / számítástechnika, számítógéptudomány
Abstract

The VIALACTEA project has a work package dedicated to "Tools and Infrastructure" and, inside it, a task for the "Database and Virtual Observatory Infrastructure". This task aims at providing an infrastructure to store all the resources needed by the, more purposely, scientific work packages of the project itself. This infrastructure includes a combination of: storage facilities, relational databases and web services on top of them, and has taken, as a whole, the name of VIALACTEA Knowledge Base (VLKB). This contribution illustrates the current status of this VLKB. It details the set of data resources put together; describes the database that allows data discovery through VO inspired metadata maintenance; illustrates the discovery, cutout and access services built on top of the former two for the users to exploit the data content.

Published
2016

11. Integrated data access, visualization and analysis for Galactic Plane surveys: the VIALACTEA case

Author

Stefano Cavuoti, Riccardo Smareglia, Giuseppe Riccio, Eva Sciacca, Alessandro Costa, Fabio Vitello, Massimo Brescia, Sergio Molinari, Marco Molinaro, Ugo Becciani, Robert Butora, Massimo Brescia, S. G. Djorgovski, Eric D. Feigelson, Giuseppe Longo, Stefano Cavuoti, Molinari, S., Butora, R., Cavuoti, S., Molinaro, M., Riccio, G., Sciacca, E., Vitello, F., Becciani, U., Brescia, M., Costa, A., and Smareglia, R.

Subjects
Physics, Visual analytics, 010308 nuclear & particles physics, Star formation, Milky Way, Extinction (astronomy), astronomical data bases: miscellaneous, methods: data analysis, stars: formation, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galactic plane, 01 natural sciences, Galaxy, Visualization, Metadata, Space and Planetary Science, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The VIALACTEA project brings to a common forum the major new-generation surveys of the Milky Way Galactic Plane from 1μm to the radio, both in thermal continuum and in atomic and molecular lines, to attack in a systematic way the characterization of the Milky Way as a star formation engine. Images, catalogues, spectroscopic datacubes and radiative transfer models of the Spectral Energy Distributions (SEDs) of sites of star formation have been incorporated and indexed in the VIALACTEA Knowledge Base (VLKB). The VLKB consists of a combination of a relational database where the VIALACTEA data and metadata are homogenised and stored, and a filesystem-based stored information. This infrastructure allowed, among others, the generation of extensive catalogue for compact sources and extended structures in the Galactic Plane, the implementation of data-mining algorithms for the band-merging of multiwavelength data and expert systems for the automated analysis of molecular line surveys to extract critical kinematical information and derive distances using Galaxy rotation curves and new 3D extinction maps. A new VIALACTEA 3D Visual Analytics interface has been developed that provides integrated access and analysis of continuum and spectroscopic images together with catalogue data directly interfacing with the VLKB.

Published
2016

12. Vialactea Visual Analytics Tool for Star Formation Studies of the Galactic Plane

Author

Stefano Cavuoti, Marco Molinaro, Robert Butora, Fabio Vitello, Ugo Becciani, Riccardo Smareglia, A. Di Giorgio, Marilena Bandieramonte, E. Schisano, Massimo Brescia, S. J. Liu, Davide Elia, Eva Sciacca, Milena Benedettini, Sergio Molinari, Alessandro Costa, Giuseppe Riccio, ITA, Vitello, F., Sciacca, E., Becciani, U., Costa, A., Bandieramonte, M., Benedettini, M., Brescia, M., Butora, R., Cavuoti, S., Di Giorgio, A. M., Elia, D., Liu, S. J., Molinari, S., Molinaro, M., Riccio, G., Schisano, E., and Smareglia, R.

Subjects
Visual analytics, Exploit, Computer science, Milky Way, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 02 engineering and technology, 01 natural sciences, Space exploration, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, media_common.cataloged_instance, European union, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Star formation, Suite, Astronomy and Astrophysics, Galactic plane, Data science, Galaxy: structure, methods: data analysis, stars: formation, surveys, techniques: image processing, Online material: color figures, Space and Planetary Science, 020201 artificial intelligence & image processing, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement No. 607380 (VIALACTEA) and from the European Commissions Horizon 2020 research and innovation programme under the grant agreement No. 739563 (EOSCPilot.eu) We present a visual analytics tool, based on the VisIVO suite, to exploit a combination of all new-generation surveys of the Galactic Plane to study the star formation process of the Milky Way. The tool has been developed within the VIALACTEA project, founded by the 7th Framework Programme of the European Union, that creates a common forum for the major new-generation surveys of the Milky Way Galactic Plane from the near-infrared to the radio, both in thermal continuum and molecular lines. Massive volumes of data are produced by space missions and ground-based facilities and the ability to collect and store them is increasing at a higher pace than the ability to analyze them. This gap leads to new challenges in the analysis pipeline to discover information contained in the data. Visual analytics focuses on handling these massive, heterogeneous, and dynamic volumes of information accessing the data previously processed by data mining algorithms and advanced analysis techniques with highly interactive visual interfaces offering scientists the opportunity for in-depth understanding of massive, noisy, and high-dimensional data.

Published
2018

13. The Hi-GAL compact source catalogue – I. The physical properties of the clumps in the inner Galaxy (−71$_.^circ$0 < ℓ < 67$_.^circ$0)

Author

Takahiro Hayakawa, David Eden, Melvin Hoare, Francesco Strafella, F. Piacentini, Kenneth A. Marsh, Sergio Molinari, S. E. Jaffa, Pedro García-Lario, Alessio Traficante, Peter Schilke, Kengo Tachihara, G. Joncas, J.-P. Bernard, M. R. Pestalozzi, S. Martinavarro-Armengol, Amata Mercurio, Alessandro Costa, Friedrich Wyrowski, Eva Sciacca, Robert Butora, B. Maiolo, Joseph C. Mottram, Mark Thompson, D. Polychroni, H. Yamamoto, G. Li Causi, P. Palmeirim, M. Benedettini, D. Russeil, Hidetoshi Sano, Kazi L.J. Rygl, Eugenio Schisano, Stefano Cavuoti, Annie Zavagno, Sarah Ragan, John Bally, M. Veneziani, Carla Buemi, A. P. Whitworth, K. Torii, Massimo Brescia, Péter Kacsuk, Davide Elia, Marco Molinaro, Nicola Schneider, Ugo Becciani, Rene Plume, Göran Pilbratt, A. M. di Giorgio, F. Faustini, P. Mège, Luca Calzoletti, Grazia Umana, Stefano Pezzuto, H. Arab, E. Fiorellino, Derek Ward-Thompson, S. J. Liu, Marilena Bandieramonte, M. T. Beltrán, Paolo Leto, Y. Maruccia, Roberta Paladini, Toby J. T. Moore, Giuseppe Riccio, Fabio Vitello, Luca Olmi, N. Marchili, Frédérique Motte, Corrado Trigilio, Ákos Hajnal, Yasuo Fukui, Nicolas Peretto, Alberto Noriega-Crespo, A. Baldeschi, Riccardo Cesaroni, Leonardo Testi, Lorenzo Piazzo, Manuel Merello, L. Cambrésy, Filomena Bufano, Peter G. Martin, Nicolas Billot, Meng-Lin Huang, Paolo Natoli, Elia, D., Molinari, S., Schisano, E., Pestalozzi, M., Pezzuto, Marilena, Merello, M., Noriega-Crespo, A., Moore, T. J. T., Russeil, D., Mottram, J. C., Paladini, R., Strafella, F., Benedettini, M., Bernard, J. P., Di Giorgio, A., Eden, D. J., Fukui, Y., Plume, R., Bally, J., Martin, P. G., Ragan, S. E., Jaffa, S. E., Motte, F., Olmi, L., Schneider, N., Testi, L., Wyrowski, F., Zavagno, A., Calzoletti, L., Faustini, F., Natoli, P., Palmeirim, P., Piacentini, F., Piazzo, L., Pilbratt, G. L., Polychroni, D., Baldeschi, A., Beltrán, M. T., Billot, N., Cambrésy, L., Cesaroni, R., García-Lario, P., Hoare, M. G., Huang, M., Joncas, G., Liu, S. J., Maiolo, B. M. T., Marsh, K. A., Maruccia, Y., Mège, P., Peretto, N., Rygl, K. L. J., Schilke, P., Thompson, M. A., Traficante, A., Umana, G., Veneziani, M., Ward-Thompson, D., Whitworth, A. P., Arab, H., Bandieramonte, M., Becciani, U., Brescia, M., Buemi, C., Bufano, F., Butora, R., Cavuoti, S., Costa, A., Fiorellino, E., Hajnal, A., Hayakawa, T., Kacsuk, P., Leto, P., Li Causi, G., Marchili, N., Martinavarro-Armengol, S., Mercurio, A., Molinaro, M., Riccio, G., Sano, H., Sciacca, E., Tachihara, K., Torii, K., Trigilio, C., Vitello, F., Yamamoto, H., Elia, Davide, Pezzuto, S., Noriega Crespo, A., Strafella, Francesco, García Lario, P., Maiolo, BERLINDA MARIA TERESA, Maruccia, Ylenia, Ward Thompson, D., and Martinavarro Armengol, S.

Subjects
Astrophysics and Astronomy, Infrared, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, cataloghi astronomici, mezzo interstellare, osservazioni infrarosse, osservazioni submillimetriche, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, QC, QB, Physics, Spiral galaxy, 010308 nuclear & particles physics, Star formation, Spectral density, Astronomy, Astronomy and Astrophysics, Galactic plane, Galaxy, Stars, Space and Planetary Science, Astrophysics::Earth and Planetary Astrophysics, catalogues, ISM clouds, dust, extinction, local interstellar matter, infrared ISM, submillimetre ISM, Longitude
Abstract

Hi-GAL (Herschel InfraRed Galactic Plane Survey) is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 μm. We present a band-merged catalogue of spatially matched sources and their properties derived from fits to the spectral energy distributions (SEDs) and heliocentric distances, based on the photometric catalogues presented in Molinari et al., covering the portion of Galactic plane −71 ∘. 0 < ℓ < 67 ∘. 0. The band-merged catalogue contains 100 922 sources with a regular SED, 24 584 of which show a 70-μm counterpart and are thus considered protostellar, while the remainder are considered starless. Thanks to this huge number of sources, we are able to carry out a preliminary analysis of early stages of star formation, identifying the conditions that characterize different evolutionary phases on a statistically significant basis. We calculate surface densities to investigate the gravitational stability of clumps and their potential to form massive stars. We also explore evolutionary status metrics such as the dust temperature, luminosity and bolometric temperature, finding that these are higher in protostellar sources compared to pre-stellar ones. The surface density of sources follows an increasing trend as they evolve from pre-stellar to protostellar, but then it is found to decrease again in the majority of the most evolved clumps. Finally, we study the physical parameters of sources with respect to Galactic longitude and the association with spiral arms, finding only minor or no differences between the average evolutionary status of sources in the fourth and first Galactic quadrants, or between ‘on-arm’ and ‘interarm’ positions. Hi-GAL is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 $\mu$m. We present a band-merged catalogue of spatially matched sources and their properties derived from fits to the spectral energy distributions (SEDs) and heliocentric distances, based on the photometric catalogs presented in Molinari et al. (2016a), covering the portion of Galactic plane $-71.0^{\circ}< \ell < 67.0^{\circ}$. The band-merged catalogue contains 100922 sources with a regular SED, 24584 of which show a 70 $\mu$m counterpart and are thus considered proto-stellar, while the remainder are considered starless. Thanks to this huge number of sources, we are able to carry out a preliminary analysis of early stages of star formation, identifying the conditions that characterise different evolutionary phases on a statistically significant basis. We calculate surface densities to investigate the gravitational stability of clumps and their potential to form massive stars. We also explore evolutionary status metrics such as the dust temperature, luminosity and bolometric temperature, finding that these are higher in proto-stellar sources compared to pre-stellar ones. The surface density of sources follows an increasing trend as they evolve from pre-stellar to proto-stellar, but then it is found to decrease again in the majority of the most evolved clumps. Finally, we study the physical parameters of sources with respect to Galactic longitude and the association with spiral arms, finding only minor or no differences between the average evolutionary status of sources in the fourth and first Galactic quadrants, or between "on-arm" and "inter-arm" positions.

Published
2017

14. VIALACTEA knowledge base homogenizing access to Milky Way data

Author

Marilena Bandieramonte, Alessandro Costa, Marco Molinaro, Ugo Becciani, Massimo Brescia, Stefano Cavuoti, S. J. Liu, Davide Elia, Anna Maria Di Giorgio, Fabio Vitello, Ákos Hajnal, Sergio Molinari, Eugenio Schisano, Giuseppe Riccio, Hermann Gabor, Riccardo Smareglia, Péter Kacsuk, Robert Butora, Eva Sciacca, ITA, HUN, Gianluca Chiozzi, Juan C. Guzman, Molinaro, M., Butora, R., Bandieramonte, M., Becciani, U., Brescia, M., Cavuoti, S., Costa, A., Di Giorgio, A. M., Elia, D., Hajnal, A., Gabor, H., Kacsuk, P., Liu, S. J., Molinari, S., Riccio, G., Schisano, E., Sciacca, E., Smareglia, R., and Vitello, F.

Subjects
business.industry, Computer science, Relational database, Data discovery, FOS: Physical sciences, 020206 networking & telecommunications, 02 engineering and technology, Virtual observatory, computer.software_genre, 01 natural sciences, Task (project management), Metadata, World Wide Web, Knowledge base, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Data access, Databases, Milky way, VO, Web service, Astrophysics - Instrumentation and Methods for Astrophysics, business, 010303 astronomy & astrophysics, computer, Instrumentation and Methods for Astrophysics (astro-ph.IM), Data integration
Abstract

The VIALACTEA project has a work package dedicated to Tools and Infrastructure and, inside it, a task for the Database and Virtual Observatory Infrastructure. This task aims at providing an infrastructure to store all the resources needed by the, more purposely, scientific work packages of the project itself. This infrastructure includes a combination of: storage facilities, relational databases and web services on top of them, and has taken, as a whole, the name of VIALACTEA Knowledge Base (VLKB). This contribution illustrates the current status of this VLKB. It details the set of data resources put together; describes the database that allows data discovery through VO inspired metadata maintenance; illustrates the discovery, cutout and access services built on top of the former two for the users to exploit the data content., Comment: 11 pages, 1 figure, SPIE Astronomical Telescopes + Instrumentation 2016, Software and Cyberifrastructure for Astronomy IV, Conference Proceedings

Published
2016

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