Search

Your search keyword '"Trinidad, A. Rodríguez"' showing total 18 results
Start Over Author "Trinidad, A. Rodríguez"
18 results on '"Trinidad, A. Rodríguez"'

1. A giant exoplanet orbiting a very low-mass star challenges planet formation models

Author

Morales, J. C., Mustill, A. J., Ribas, I., Davies, M. B., Reiners, A., Bauer, F. F., Kossakowski, D., Herrero, E., Rodríguez, E., López-González, M. J., Rodríguez-López, C., Béjar, V. J. S., González-Cuesta, L., Luque, R., Pallé, E., Perger, M., Baroch, D., Johansen, A., Klahr, H., Mordasini, C., Anglada-Escudé, G., Caballero, J. A., Cortés-Contreras, M., Dreizler, S., Lafarga, M., Nagel, E., Passegger, V. M., Reffert, S., Rosich, A., Schweitzer, A., Tal-Or, L., Trifonov, T., Zechmeister, M., Quirrenbach, A., Amado, P. J., Guenther, E. W., Hagen, H. -J., Henning, T., Jeffers, S. V., Kaminski, A., Kürster, M., Montes, D., Seifert, W., Abellán, F. J., Abril, M., Aceituno, J., Aceituno, F. J., Alonso-Floriano, F. J., Eiff, M. Ammler-von, Antona, R., Arroyo-Torres, B., Azzaro, M., Barrado, D., Becerril-Jarque, S., Benítez, D., Berdiñas, Z. M., Bergond, G., Brinkmöller, M., del Burgo, C., Burn, R., Calvo-Ortega, R., Cano, J., Cárdenas, M. C., Guillén, C. Cardona, Carro, J., Casal, E., Casanova, V., Casasayas-Barris, N., Chaturvedi, P., Cifuentes, C., Claret, A., Colomé, J., Czesla, S., Díez-Alonso, E., Dorda, R., Emsenhuber, A., Fernández, M., Fernández-Martín, A., Ferro, I. M., Fuhrmeister, B., Galadí-Enríquez, D., Cava, I. Gallardo, Vargas, M. L. García, Garcia-Piquer, A., Gesa, L., González-Álvarez, E., Hernández, J. I. González, González-Peinado, R., Guàrdia, J., Guijarro, A., de Guindos, E., Hatzes, A. P., Hauschildt, P. H., Hedrosa, R. P., Hermelo, I., Arabi, R. Hernández, Otero, F. Hernández, Hintz, D., Holgado, G., Huber, A., Huke, P., Johnson, E. N., de Juan, E., Kehr, M., Kemmer, J., Kim, M., Klüter, J., Klutsch, A., Labarga, F., Labiche, N., Lalitha, S., Lampón, M., Lara, L. M., Launhardt, R., Lázaro, F. J., Lizon, J. -L., Llamas, M., Lodieu, N., del Fresno, M. López, Salas, J. F. López, López-Santiago, J., Madinabeitia, H. Magán, Mall, U., Mancini, L., Mandel, H., Marfil, E., Molina, J. A. Marín, Martín, E. L., Martín-Fernández, P., Martín-Ruiz, S., Martínez-Rodríguez, H., Marvin, C. J., Mirabet, E., Moya, A., Naranjo, V., Nelson, R. P., Nortmann, L., Nowak, G., Ofir, A., Pascual, J., Pavlov, A., Pedraz, S., Medialdea, D. Pérez, Pérez-Calpena, A., Perryman, M. A. C., Rabaza, O., Ballesta, A. Ramón, Rebolo, R., Redondo, P., Rix, H. -W., Rodler, F., Trinidad, A. Rodríguez, Sabotta, S., Sadegi, S., Salz, M., Sánchez-Blanco, E., Carrasco, M. A. Sánchez, Sánchez-López, A., Sanz-Forcada, J., Sarkis, P., Sarmiento, L. F., Schäfer, S., Schlecker, M., Schmitt, J. H. M. M., Schöfer, P., Solano, E., Sota, A., Stahl, O., Stock, S., Stuber, T., Stürmer, J., Suárez, J. C., Tabernero, H. M., Tulloch, S. M., Veredas, G., Vico-Linares, J. I., Vilardell, F., Wagner, K., Winkler, J., Wolthoff, V., Yan, F., and Osorio, M. R. Zapatero

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

Statistical analyses from exoplanet surveys around low-mass stars indicate that super-Earth and Neptune-mass planets are more frequent than gas giants around such stars, in agreement with core accretion theory of planet formation. Using precise radial velocities derived from visual and near-infrared spectra, we report the discovery of a giant planet with a minimum mass of 0.46 Jupiter masses in an eccentric 204-day orbit around the very low-mass star GJ 3512. Dynamical models show that the high eccentricity of the orbit is most likely explained from planet-planet interactions. The reported planetary system challenges current formation theories and puts stringent constraints on the accretion and migration rates of planet formation and evolution models, indicating that disc instability may be more efficient in forming planets than previously thought., Comment: Manuscript author version. 41 pages, 11 figures

Published
2019
Full Text
View/download PDF

2. The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star

Author

Zechmeister, M., Dreizler, S., Ribas, I., Reiners, A., Caballero, J. A., Bauer, F. F., Béjar, V. J. S., González-Cuesta, L., Herrero, E., Lalitha, S., López-González, M. J., Luque, R., Morales, J. C., Pallé, E., Rodríguez, E., López, C. Rodríguez, Tal-Or, L., Anglada-Escudé, G., Quirrenbach, A., Amado, P. J., Abril, M., Aceituno, F. J., Aceituno, J., Alonso-Floriano, F. J., Eiff, M. Ammler-von, Jiménez, R. Antona, Anwand-Heerwart, H., Arroyo-Torres, B., Azzaro, M., Baroch, D., Barrado, D., Becerril, S., Benítez, D., Berdiñas, Z. M., Bergond, G., Bluhm, P., Brinkmöller, M., del Burgo, C., Ortega, R. Calvo, Cano, J., Guillén, C. Cardona, Carro, J., Vázquez, M. C. Cárdenas, Casal, E., Casasayas-Barris, N., Casanova, V., Chaturvedi, P., Cifuentes, C., Claret, A., Colomé, J., Cortés-Contreras, M., Czesla, S., Díez-Alonso, E., Dorda, R., Fernández, M., Fernández-Martín, A., Ferro, I. M., Fuhrmeister, B., Fukui, A., Galadí-Enríquez, D., Cava, I. Gallardo, de la Fuente, J. Garcia, Garcia-Piquer, A., Vargas, M. L. García, Gesa, L., Rueda, J. Góngora, González-Álvarez, E., Hernández, J. I. González, González-Peinado, R., Grözinger, U., Guàrdia, J., Guijarro, A., de Guindos, E., Hatzes, A. P., Hauschildt, P. H., Hedrosa, R. P., Helmling, J., Henning, T., Hermelo, I., Arabi, R. Hernández, Castaño, L. Hernández, Otero, F. Hernández, Hintz, D., Huke, P., Huber, A., Jeffers, S. V., Johnson, E. N., de Juan, E., Kaminski, A., Kemmer, J., Kim, M., Klahr, H., Klein, R., Klüter, J., Klutsch, A., Kossakowski, D., Kürster, M., Labarga, F., Lafarga, M., Llamas, M., Lampón, M., Lara, L. M., Launhardt, R., Lázaro, F. J., Lodieu, N., del Fresno, M. López, López-Comazzi, A., López-Puertas, M., Salas, J. F. López, López-Santiago, J., Madinabeitia, H. Magán, Mall, U., Mancini, L., Mandel, H., Marfil, E., Molina, J. A. Marín, Fernández, D. Maroto, Martín, E. L., Martín-Fernández, P., Martín-Ruiz, S., Marvin, C. J., Mirabet, E., Montañés-Rodríguez, P., Montes, D., Moreno-Raya, M. E., Nagel, E., Naranjo, V., Narita, N., Nortmann, L., Nowak, G., Ofir, A., Oshagh, M., Panduro, J., Parviainen, H., Pascual, J., Passegger, V. M., Pavlov, A., Pedraz, S., Pérez-Calpena, A., Medialdea, D. Pérez, Perger, M., Perryman, M. A. C., Rabaza, O., Ballesta, A. Ramón, Rebolo, R., Redondo, P., Reffert, S., Reinhardt, S., Rhode, P., Rix, H. -W., Rodler, F., Trinidad, A. Rodríguez, Rosich, A., Sadegi, S., Sánchez-Blanco, E., Carrasco, M. A. Sánchez, Sánchez-López, A., Sanz-Forcada, J., Sarkis, P., Sarmiento, L. F., Schäfer, S., Schmitt, J. H. M. M., Schöfer, P., Schweitzer, A., Seifert, W., Shulyak, D., Solano, E., Sota, A., Stahl, O., Stock, S., Strachan, J. B. P., Stuber, T., Stürmer, J., Suárez, J. C., Tabernero, H. M., Pinto, M. Tala, Trifonov, T., Veredas, G., Linares, J. I. Vico, Vilardell, F., Wagner, K., Wolthoff, V., Xu, W., Yan, F., and Osorio, M. R. Zapatero

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden's Star and analysed them for planetary signals. Methods. We find periodic variability in the radial velocities of Teegarden's Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals. Results. We find evidence for two planet candidates, each with $1.1M_\oplus$ minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age. Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities., Comment: A&A 627, A49. 26 pages, 17 figures, 6 tables. Press release available at http://www.astro.physik.uni-goettingen.de/~zechmeister/teegarden/teegarden.html. v2: two authors and one reference added

Published
2019
Full Text
View/download PDF

3. The CARMENES search for exoplanets around M dwarfs - HD 147379b: A nearby Neptune in the temperate zone of an early-M dwarf

Author

Reiners, A., Ribas, I., Zechmeister, M., Caballero, J. A., Trifonov, T., Dreizler, S., Morales, J. C., Tal-Or, L., Lafarga, M., Quirrenbach, A., Amado, P. J., Kaminski, A., Jeffers, S. V., Aceituno, J., Béjar, V. J. S., Guàrdia, J., Guenther, E. W., Hagen, H. -J., Montes, D., Passegger, V. M., Seifert, W., Schweitzer, A., Cortés-Contreras, M., Abril, M., Alonso-Floriano, F. J., Eiff, M. Ammler-von, Antona, R., Anglada-Escudé, G., Anwand-Heerwart, H., Arroyo-Torres, B., Azzaro, M., Baroch, D., Barrado, D., Bauer, F. F., Becerril, S., Benítez, D., Berdiñas, Z. M., Bergond, G., Blümcke, M., Brinkmöller, M., del Burgo, C., Cano, J., Vázquez, M. C. Cárdenas, Casal, E., Cifuentes, C., Claret, A., Colomé, J., Czesla, S., Díez-Alonso, E., Feiz, C., Fernández, M., Ferro, I. M., Fuhrmeister, B., Galadí-Enríquez, D., Garcia-Piquer, A., Vargas, M. L. García, Gesa, L., Galera, V. Gómez, Hernández, J. I. González, González-Peinado, R., Grözinger, U., Grohnert, S., Guijarro, A., de Guindos, E., Gutiérrez-Soto, J., Hatzes, A. P., Hauschildt, P. H., Hedrosa, R. P., Helmling, J., Henning, Th., Hermelo, I., Arabí, R. Hernández, Castaño, L. Hernández, Hernando, F. Hernández, Herrero, E., Huber, A., Huke, P., Johnson, E. N., de Juan, E., Kim, M., Klein, R., Klüter, J., Klutsch, A., Kürster, M., Labarga, F., Lamert, A., Lampón, M., Lara, L. M., Laun, W., Lemke, U., Lenzen, R., Launhardt, R., del Fresno, M. López, López-González, M. J., López-Puertas, M., Salas, J. F. López, López-Santiago, J., Luque, R., Madinabeitia, H. Magán, Mall, U., Mancini, L., Mandel, H., Marfil, E., Molina, J. A. Marín, Fernández, D. Maroto, Martín, E. L., Martín-Ruiz, S., Marvin, C. J., Mathar, R. J., Mirabet, E., Moreno-Raya, M. E., Moya, A., Mundt, R., Nagel, E., Naranjo, V., Nortmann, L., Nowak, G., Ofir, A., Oreiro, R., Pallé, E., Panduro, J., Pascual, J., Pavlov, A., Pedraz, S., Pérez-Calpena, A., Medialdea, D. Pérez, Perger, M., Perryman, M. A. C., Pluto, M., Rabaza, O., Ramón, A., Rebolo, R., Redondo, P., Reffert, S., Reinhart, S., Rhode, P., Rix, H. -W., Rodler, F., Rodríguez, E., Rodríguez-López, C., Trinidad, A. Rodríguez, Rohloff, R. -R., Rosich, A., Sadegi, S., Sánchez-Blanco, E., Carrasco, M. A. Sánchez, Sánchez-López, A., Sanz-Forcada, J., Sarkis, P., Sarmiento, L. F., Schäfer, S., Schmitt, J. H. M. M., Schiller, J., Schöfer, P., Solano, E., Stahl, O., Strachan, J. B. P., Stürmer, J., Suárez, J. C., Tabernero, H. M., Tala, M., Tulloch, S. M., Ulbrich, R. -G., Veredas, G., Linares, J. I. Vico, Vilardell, F., Wagner, K., Winkler, J., Wolthoff, V., Xu, W., Yan, F., and Osorio, M. R. Zapatero

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 ($V = 8.9$ mag, $M = 0.58 \pm 0.08$ M$_{\odot}$), a bright M0.0V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of $K = 5.1\pm0.4$ m s$^{-1}$ and a period of $P = 86.54\pm0.06$ d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass $m_{\rm p}\sin{i} = 25 \pm 2$ M$_{\oplus}$, 1.5 times the mass of Neptune, with an orbital semi-major axis $a = 0.32$ au and low eccentricity ($e < 0.13$). HD 147379b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1d (and its first harmonic), which we attribute to the rotation period of the star., Comment: accepted for publication as A&A Letter

Published
2017
Full Text
View/download PDF

4. The CARMENES search for exoplanets around M dwarfs: High-resolution optical and near-infrared spectroscopy of 324 survey stars

Author

Reiners, A., Zechmeister, M., Caballero, J. A., Ribas, I., Morales, J. C., Jeffers, S. V., Schöfer, P., Tal-Or, L., Quirrenbach, A., Amado, P. J., Kaminski, A., Seifert, W., Abril, M., Aceituno, J., Alonso-Floriano, F. J., Eiff, M. Ammler-von, Antona, R., Anglada-Escudé, G., Anwand-Heerwart, H., Arroyo-Torres, B., Azzaro, M., Baroch, D., Barrado, D., Bauer, F. F., Becerril, S., Béjar, V. J. S., Benítez, D., Berdiñas, Z. M., Bergond, G., Blümcke, M., Brinkmöller, M., del Burgo, C., Cano, J., Vázquez, M. C. Cárdenas, Casal, E., Cifuentes, C., Claret, A., Colomé, J., Cortés-Contreras, M., Czesla, S., Díez-Alonso, E., Dreizler, S., Feiz, C., Fernández, M., Ferro, I. M., Fuhrmeister, B., Galadí-Enríquez, D., Garcia-Piquer, A., Vargas, M. L. García, Gesa, L., Gómez, V., Galera, Hernández, J. I. González, González-Peinado, R., Grözinger, U., Grohnert, S., Guàrdia, J., Guenther, E. W., Guijarro, A., de Guindos, E., Gutiérrez-Soto, J., Hagen, H. -J., Hatzes, A. P., Hauschildt, P. H., Hedrosa, R. P., Helmling, J., Henning, Th., Hermelo, I., Arabí, R. Hernández, Castaño, L. Hernández, Hernando, F. Hernández, Herrero, E., Huber, A., Huke, P., Johnson, E., de Juan, E., Kim, M., Klein, R., Klüter, J., Klutsch, A., Kürster, M., Lafarga, M., Lamert, A., Lampón, M., Lara, L. M., Laun, W., Lemke, U., Lenzen, R., Launhardt, R., del Fresno, M. López, López-González, J., López-Puertas, M., Salas, J. F. López, López-Santiago, J., Luque, R., Madinabeitia, H. Magán, Mall, U., Mancini, L., Mandel, H., Marfil, E., Molina, J. A. Marín, Maroto, D., Fernández, Martín, E. L., Martín-Ruiz, S., Marvin, C. J., Mathar, R. J., Mirabet, E., Montes, D., Moreno-Raya, M. E., Moya, A., Mundt, R., Nagel, E., Naranjo, V., Nortmann, L., Nowak, G., Ofir, A., Oreiro, R., Pallé, E., Panduro, J., Pascual, J., Passegger, V. M., Pavlov, A., Pedraz, S., Pérez-Calpena, A., Medialdea, D. Pérez, Perger, M., Perryman, M. A. C., Pluto, M., Rabaza, O., Ramón, A., Rebolo, R., Redondo, P., Reffert, S., Reinhart, S., Rhode, P., Rix, H. -W., Rodler, F., Rodríguez, E., Rodríguez-López, C., Trinidad, A. Rodríguez, Rohloff, R. -R., Rosich, A., Sadegi, S., Sánchez-Blanco, E., Carrasco, M. A. Sánchez, Sánchez-López, A., Sanz-Forcada, J., Sarkis, P., Sarmiento, L. F., Schäfer, S., Schmitt, J. H. M. M., Schiller, J., Schweitzer, A., Solano, E., Stahl, O., Strachan, J. B. P., Stürmer, J., Suárez, J. C., Tabernero, H. M., Tala, M., Trifonov, T., Tulloch, S. M., Ulbrich, R. G., Veredas, G., Linares, J. I. Vico, Vilardell, F., Wagner, K., Winkler, J., Wolthoff, V., Xu, W., Yan, F., and Osorio, M. R. Zapatero

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

The CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by publishing one CARMENES spectrum for each M dwarf. These spectra cover the wavelength range 520--1710nm at a resolution of at least $R > 80,000$, and we measure its RV, H$\alpha$ emission, and projected rotation velocity. We present an atlas of high-resolution M-dwarf spectra and compare the spectra to atmospheric models. To quantify the RV precision that can be achieved in low-mass stars over the CARMENES wavelength range, we analyze our empirical information on the RV precision from more than 6500 observations. We compare our high-resolution M-dwarf spectra to atmospheric models where we determine the spectroscopic RV information content, $Q$, and signal-to-noise ratio. We find that for all M-type dwarfs, the highest RV precision can be reached in the wavelength range 700--900nm. Observations at longer wavelengths are equally precise only at the very latest spectral types (M8 and M9). We demonstrate that in this spectroscopic range, the large amount of absorption features compensates for the intrinsic faintness of an M7 star. To reach an RV precision of 1ms$^{-1}$ in very low mass M dwarfs at longer wavelengths likely requires the use of a 10m class telescope. For spectral types M6 and earlier, the combination of a red visual and a near-infrared spectrograph is ideal to search for low-mass planets and to distinguish between planets and stellar variability. At a 4m class telescope, an instrument like CARMENES has the potential to push the RV precision well below the typical jitter level of 3-4ms$^{-1}$., Comment: accepted for publication in A&A, 13 pages plus 40 pages spectral atlas, first 10 atlas pages are reduced in quality to fit arXiv size limit; one CARMENES spectrum for each of the 324 stars is published in electronic format at http://carmenes.cab.inta-csic.es/

Published
2017
Full Text
View/download PDF

5. The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems

Author

Trifonov, T., Kürster, M., Zechmeister, M., Tal-Or, L., Caballero, J. A., Quirrenbach, A., Amado, P. J., Ribas, I., Reiners, A., Reffert, S., Dreizler, S., Hatzes, A. P., Kaminski, A., Launhardt, R., Henning, Th., Montes, D., Béjar, V. J. S., Mundt, R., Pavlov, A., Schmitt, J. H. M. M., Seifert, W., Morales, J. C., Nowak, G., Jeffers, S. V., Rodríguez-López, C., del Burgo, C., Anglada-Escudé, G., López-Santiago, J., Mathar, R. J., Eiff, M. Ammler-von, Guenther, E. W., Barrado, D., Hernández, J. I. González, Mancini, L., Stürmer, J., Abril, M., Aceituno, J., Alonso-Floriano, F. J., Antona, R., Anwand-Heerwart, H., Arroyo-Torres, B., Azzaro, M., Baroch, D., Bauer, F. F., Becerril, S., Benítez, D., Berdiñas, Z. M., Bergond, G., Blümcke, M., Brinkmöller, M., Cano, J., Vázquez, M. C. Cárdenas, Casal, E., Cifuentes, C., Claret, A., Colomé, J., Cortés-Contreras, M., Czesla, S., Díez-Alonso, E., Feiz, C., Fernández, M., Ferro, I. M., Fuhrmeister, B., Galadí-Enríquez, D., Garcia-Piquer, A., Vargas, M. L. García, Gesa, L., Galera, V. Gómez, González-Peinado, R., Grözinger, U., Grohnert, S., Guàrdia, J., Guijarro, A., de Guindos, E., Gutiérrez-Soto, J., Hagen, H. -J., Hauschildt, P. H., Hedrosa, R. P., Helmling, J., Hermelo, I., Arabí, R. Hernández, Castaño, L. Hernández, Hernando, F. Hernández, Herrero, E., Huber, A., Huke, P., Johnson, E., de Juan, E., Kim, M., Klein, R., Klüter, J., Klutsch, A., Lafarga, M., Lampón, M., Lara, L. M., Laun, W., Lemke, U., Lenzen, R., del Fresno, M. López, López-González, J., López-Puertas, M., Salas, J. F. López, Luque, R., Madinabeitia, H. Magán, Mall, U., Mandel, H., Marfil, E., Molina, J. A. Marín, Fernández, D. Maroto, Martín, E. L., Martín-Ruiz, S., Marvin, C. J., Mirabet, E., Moya, A., Moreno-Raya, M. E., Nagel, E., Naranjo, V., Nortmann, L., Ofir, A., Oreiro, R., Pallé, E., Panduro, J., Pascual, J., Passegger, V. M., Pedraz, S., Pérez-Calpena, A., Medialdea, D. Pérez, Perger, M., Perryman, M. A. C., Pluto, M., Rabaza, O., Ramón, A., Rebolo, R., Redondo, P., Reinhardt, S., Rhode, P., Rix, H. -W., Rodler, F., Rodríguez, E., Trinidad, A. Rodríguez, Rohloff, R. -R., Rosich, A., Sadegi, S., Sánchez-Blanco, E., Carrasco, M. A. Sánchez, Sánchez-López, A., Sanz-Forcada, J., Sarkis, P., Sarmiento, L. F., Schäfer, S., Schiller, J., Schöfer, P., Schweitzer, A., Solano, E., Stahl, O., Strachan, J. B. P., Suárez, J. C., Tabernero, H. M., Tala, M., Tulloch, S. M., Veredas, G., Linares, J. I. Vico, Vilardell, F., Wagner, K., Winkler, J., Wolthoff, V., Xu, W., Yan, F., and Osorio, M. R. Zapatero

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Context: The main goal of the CARMENES survey is to find Earth-mass planets around nearby M-dwarf stars. Seven M-dwarfs included in the CARMENES sample had been observed before with HIRES and HARPS and either were reported to have one short period planetary companion (GJ15A, GJ176, GJ436, GJ536 and GJ1148) or are multiple planetary systems (GJ581 and GJ876). Aims: We aim to report new precise optical radial velocity measurements for these planet hosts and test the overall capabilities of CARMENES. Methods: We combined our CARMENES precise Doppler measurements with those available from HIRES and HARPS and derived new orbital parameters for the systems. Bona-fide single planet systems are fitted with a Keplerian model. The multiple planet systems were analyzed using a self-consistent dynamical model and their best fit orbits were tested for long-term stability. Results: We confirm or provide supportive arguments for planets around all the investigated stars except for GJ15A, for which we find that the post-discovery HIRES data and our CARMENES data do not show a signal at 11.4 days. Although we cannot confirm the super-Earth planet GJ15Ab, we show evidence for a possible long-period ($P_{\rm c}$ = 7025$_{-629}^{+972}$ d) Saturn-mass ($m_{\rm c} \sin i$ = 51.8$_{-5.8}^{+5.5}M_\oplus$) planet around GJ15A. In addition, based on our CARMENES and HIRES data we discover a second planet around GJ1148, for which we estimate a period $P_{\rm c}$ = 532.6$_{-2.5}^{+4.1}$ d, eccentricity $e_{\rm c}$ = 0.34$_{-0.06}^{+0.05}$ and minimum mass $m_{\rm c} \sin i$ = 68.1$_{-2.2}^{+4.9}M_\oplus$. Conclusions: The CARMENES optical radial velocities have similar precision and overall scatter when compared to the Doppler measurements conducted with HARPS and HIRES. We conclude that CARMENES is an instrument that is up to the challenge of discovering rocky planets around low-mass stars., Comment: Accepted for publication in A&A, 24 pages, 16 figures, 14 tables

Published
2017
Full Text
View/download PDF

6. Controlled Electromagnetic Field Based Safety System for Handheld Circular Saw

Author

Pedro Teixidó, José M. Hinojo-Montero, Juan Antonio Gómez-Galán, Fernando Muñoz-Chavero, Trinidad Sánchez-Rodríguez, and Juan Aponte

Subjects
power tools, circular saw, safety, health, human detection, tele-care, Chemical technology, TP1-1185
Abstract

This paper presents the design of a safety system based on controlled electromagnetic field (CEMF) sensing technology to prevent accidents caused by power tools, especially related to handheld circular saws. The safety system creates an invisible protection bubble of electromagnetic field around the cutting edge. The system can provide early warning or critical warning when a person penetrates the safety bubble. This paper covers how the CEMF technology has been adapted to add value within this application where it needs to coexist with a difficult environment of metallic parts turning thousands of times per minute, strong vibrations, and different ranges of materials to be processed. The proposed contactless solution successfully detects the user, providing enough time for the power tool to totally stop its movement before touching and harming the user. This key property has required a careful optimization of the electromagnetic field generation, the design of a shield circuitry capable of operating properly in a large metal device, and the development of a multi-frame algorithm to address the stringent requirements related to the ability of the system to react to both very fast and very slow events. The feasibility of the system has been validated by a virtual testbench.

Published
2022
Full Text
View/download PDF

7. CARMENES: Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph

Author

Quirrenbach, A., Amado, P. J., Mandel, H., Caballero, J. A., Ribas, I., Reiners, A., Mundt, R., Abril, M., Afonso, C., Bean, J. L., Bejar, V. J. S., Becerril, S., Boehm, A., Cardenas, C., Claret, A., Colome, J., Costillo, L. P., Dreizler, S., Fernandez, M., Francisco, X., Garrido, R., Hernandez, J. I. Gonzalez, Guenther, E. W., Gutierrez-Soto, J., Joergens, V., Hatzes, A. P., Henning, T., Herrero, E., Kurster, M., Laun, W., Lenzen, R., Mall, U., Martin, E. L., Martin-Ruiz, S., Montes, D., Morales, J. C., Munoz, R. Morales, Moya, A., Naranjo, V., Rabaza, O., Ramon, A., Rebolo, R., Reffert, S., Rodler, F., Rodriguez, E., Trinidad, A. Rodriguez, Rohloff, R. -R., Carrasco, M. A. Sanchez, Schmidt, C., Seifert, W., Setiawan, J., Stahl, O., Suarez, J. C., Wiedemann, G., del Burgo, C., Galadi, D., Sanchez-Blanco, E., and Xu, W.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

CARMENES, Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph, is a study for a next-generation instrument for the 3.5m Calar Alto Telescope to be designed, built, integrated, and operated by a consortium of nine German and Spanish institutions. Our main objective is finding habitable exoplanets around M dwarfs, which will be achieved by radial velocity measurements on the m/s level in the near-infrared, where low-mass stars emit the bulk of their radiation., Comment: Astronomical Society of the Pacific Conference Series, "Pathways towards habitable planets", eds. V. Coude du Foresto, D. M. Gelino & I. Ribas, 14-18 Sep 2009, Barcelona, Spain (in press) Note: Because of space restriction, the printed conference paper will appear with only an abbreviated author list

Published
2009

8. Utilidad y fiabilidad de la ecografía clínica musculoesquelética en medicina familiar (2): lesiones musculares, artrosis, enfermedades reumatológicas y procedimientos ecoguiados

Author

Ignacio Manuel Sánchez Barrancos, Susana Manso García, Pedro Lozano Gago, Trinidad Hernández Rodríguez, Laura Conangla Ferrín, Antonio Lorenzo Ruiz Serrano, and Roberto González Santisteban

Subjects
Medicine (General), R5-920
Abstract

Resumen: Este artículo es continuación de la revisión iniciada en el número anterior sobre la utilidad de la ecografía clínica musculoesquelética en atención primaria, y completa los escenarios de lesiones musculares, artrosis, enfermedades reumatológicas y procesos ecoguiados. Abstract: This article is a continuation of the review initiated in the previous issue about the usefulness of musculoskeletal point of care ultrasound in Primary Care, completing the scenarios of muscle injuries, osteoarthritis, rheumatological diseases and eco-guided procedures. Palabras clave: Ecografía clínica, Medicina familiar, Utilidad, Fiabilidad, Keywords: Point of care ultrasound, Family Practice, Usefulness, Reliability

Published
2019
Full Text
View/download PDF

9. Utilidad y fiabilidad de la ecografía clínica musculoesquelética en medicina familiar (1): rodilla, hombro y entesis

Author

Ignacio Manuel Sánchez Barrancos, Antonio Lorenzo Ruiz Serrano, Roberto González Santisteban, Susana Manso García, Trinidad Hernández Rodríguez, Pedro Lozano Gago, and Laura Conangla Ferrín

Subjects
Medicine (General), R5-920
Abstract

Resumen: La ecografía musculoesquelética (EME) es una técnica que se ha extendido en los últimos años a la práctica totalidad de las especialidades médicas que abarcan esta parte de la patología. El médico de familia (MF) no ha sido ajeno a este proceso por su amplísimo espectro de competencias, usándola en gran cantidad de situaciones de su práctica habitual en las cuales obtiene rentabilidad de ella de modo fiable, eficiente y eficaz.La dotación de ecografía en los centros de Atención Primaria (AP) es una realidad creciente, aportando elevadas cotas de accesibilidad, inmediatez y capacidad de manejo clínico, lo que, unido a la elevada prevalencia de problemas del aparato locomotor en este ámbito, convierten a la EME en una acción estratégica de mejora de la capacidad resolutiva y de la calidad de la atención sanitaria.Para asegurar la competencia de quienes la practican, se hace necesario definir los beneficios y los potenciales riesgos que su uso puede generar, así como sus escenarios de aplicación, evitar exploraciones innecesarias y optimizar la inversión que supone dotar de este recurso al nivel de AP. Este artículo pretende resumir el estado actual de la ecografía clínica musculoesquelética y su utilidad para el MF en aquellos escenarios en los que resulta fiable y eficaz. Abstract: Musculoskeletal ultrasound (MSU) is a technique which has been extended to practically all medical specialties that comprise this pathology. Family Doctor (FD) has not been away from this process due to its great wide of competences, using it in different scenarios inside his common practice in which he can get profits in a reliable, efficient and effective way.Ultrasound equipment incorporation in Primary Care (PC) centers is an increasing reality, contributing to high ranges of accessibility, immediacy and clinic handle capability, and thus, together with the high prevalence in this area in locomotor apparatus, turns MSU into an strategic action for the improvement of the resolving capacity and consequently for the health care.To ensure proficiency among users, it's being necessary to define the benefits and potential risks its use can cause, as well as its different scenarios, avoiding unnecessary explorations and optimizing the investment of this resource at PC level. This paper pretends to summarize the state of the art of the musculoskeletal ultrasound and its benefits for the FD into this efficient and effective scenarios. Palabras clave: Ecografía clínica, Medicina familiar, Utilidad, Fiabilidad, Keywords: Point of care ultrasound, Family practice, Usefulness, Reliability

Published
2018
Full Text
View/download PDF

11. Low-Power Low-Cost Wireless Flood Sensor for Smart Home Systems

Author

Pedro Teixidó, Juan Antonio Gómez-Galán, Fernando Gómez-Bravo, Trinidad Sánchez-Rodríguez, Javier Alcina, and Juan Aponte

Subjects
smart homes, flood detection, wireless sensor network, low power consumption, IEEE 802.15.4, Chemical technology, TP1-1185
Abstract

This paper presents the design of a wireless flood sensor to detect the presence of water on home floors, providing early warning of water leaks. A wireless sensor network has been deployed to gather the measurements from the sensor nodes. A control central coordinates the network and processes the data. Users can remotely inquire for the presence of water, status of the batteries for a specific node, the type of liquid and information about its functionality and alarms, thanks to a proprietary software application. The alerts are also communicated to the user within the home through an audible siren. The designed device is optimized in terms of costs, ease of deployment and maintenance, thus making it widely acceptable to end users.

Published
2018
Full Text
View/download PDF

14. Utilidad y fiabilidad de la ecografía clínica musculoesquelética en medicina familiar (2): lesiones musculares, artrosis, enfermedades reumatológicas y procedimientos ecoguiados

Author

Laura Conangla Ferrín, Pedro Lozano Gago, Ignacio Manuel Sánchez Barrancos, Antonio Serrano, Susana Manso García, Trinidad Hernández Rodríguez, and Roberto González Santisteban

Subjects
030203 arthritis & rheumatology, lcsh:R5-920, medicine.medical_specialty, business.industry, Point of care ultrasound, General Medicine, Primary care, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Physical therapy, Medicine, lcsh:Medicine (General), Family Practice, business
Abstract

Resumen: Este artículo es continuación de la revisión iniciada en el número anterior sobre la utilidad de la ecografía clínica musculoesquelética en atención primaria, y completa los escenarios de lesiones musculares, artrosis, enfermedades reumatológicas y procesos ecoguiados. Abstract: This article is a continuation of the review initiated in the previous issue about the usefulness of musculoskeletal point of care ultrasound in Primary Care, completing the scenarios of muscle injuries, osteoarthritis, rheumatological diseases and eco-guided procedures. Palabras clave: Ecografía clínica, Medicina familiar, Utilidad, Fiabilidad, Keywords: Point of care ultrasound, Family Practice, Usefulness, Reliability

Published
2019

15. Utilidad y fiabilidad de la ecografía clínica musculoesquelética en medicina familiar (1): rodilla, hombro y entesis

Author

Pedro Lozano Gago, Laura Conangla Ferrín, Roberto González Santisteban, Antonio Lorenzo Ruiz Serrano, Ignacio Manuel Sánchez Barrancos, Susana Manso García, and Trinidad Hernández Rodríguez

Subjects
Shoulder, Knee Joint, Computer science, Point-of-Care Systems, Fiabilidad, Musculoskeletal ultrasound, Primary care, 03 medical and health sciences, 0302 clinical medicine, Resource (project management), Immediacy, Health care, Humans, Knee, Operations management, Point of care ultrasound, Musculoskeletal Diseases, 030212 general & internal medicine, Connective Tissue Diseases, Ultrasonography, 030203 arthritis & rheumatology, lcsh:R5-920, High prevalence, Shoulder Joint, business.industry, Ecografía clínica, Reproducibility of Results, General Medicine, Usefulness, Reliability, Artículo especial, Medicina familiar, Family Practice, business, lcsh:Medicine (General), Utilidad
Abstract

Resumen: La ecografía musculoesquelética (EME) es una técnica que se ha extendido en los últimos años a la práctica totalidad de las especialidades médicas que abarcan esta parte de la patología. El médico de familia (MF) no ha sido ajeno a este proceso por su amplísimo espectro de competencias, usándola en gran cantidad de situaciones de su práctica habitual en las cuales obtiene rentabilidad de ella de modo fiable, eficiente y eficaz.La dotación de ecografía en los centros de Atención Primaria (AP) es una realidad creciente, aportando elevadas cotas de accesibilidad, inmediatez y capacidad de manejo clínico, lo que, unido a la elevada prevalencia de problemas del aparato locomotor en este ámbito, convierten a la EME en una acción estratégica de mejora de la capacidad resolutiva y de la calidad de la atención sanitaria.Para asegurar la competencia de quienes la practican, se hace necesario definir los beneficios y los potenciales riesgos que su uso puede generar, así como sus escenarios de aplicación, evitar exploraciones innecesarias y optimizar la inversión que supone dotar de este recurso al nivel de AP. Este artículo pretende resumir el estado actual de la ecografía clínica musculoesquelética y su utilidad para el MF en aquellos escenarios en los que resulta fiable y eficaz. Abstract: Musculoskeletal ultrasound (MSU) is a technique which has been extended to practically all medical specialties that comprise this pathology. Family Doctor (FD) has not been away from this process due to its great wide of competences, using it in different scenarios inside his common practice in which he can get profits in a reliable, efficient and effective way.Ultrasound equipment incorporation in Primary Care (PC) centers is an increasing reality, contributing to high ranges of accessibility, immediacy and clinic handle capability, and thus, together with the high prevalence in this area in locomotor apparatus, turns MSU into an strategic action for the improvement of the resolving capacity and consequently for the health care.To ensure proficiency among users, it's being necessary to define the benefits and potential risks its use can cause, as well as its different scenarios, avoiding unnecessary explorations and optimizing the investment of this resource at PC level. This paper pretends to summarize the state of the art of the musculoskeletal ultrasound and its benefits for the FD into this efficient and effective scenarios. Palabras clave: Ecografía clínica, Medicina familiar, Utilidad, Fiabilidad, Keywords: Point of care ultrasound, Family practice, Usefulness, Reliability

Published
2018

16. Efecto sinérgico de Trichoderma asperellum T8A y captan 50® contra Colletotrichum gloeosporioides

Author

Sergio de los Santos-Villalobos, Reyna Trinidad Reyes-Rodríguez, Abigail Peláez-Álvarez, Fannie Isela Parra-Cota, and Enrico A. Yepez

Subjects
General Medicine
Abstract

El objetivo del presente estudio fue cuantificar la interacción Captan 50® - Trichoderma asperellum T8a como alternativa sinérgica para el control de Colletotrichum gloeosporioides ATCC MYA456, agente causal de la antracnosis en el mango. La caracterización macroscópica, microscópica y molecular confirmaron la taxonomía de estos microorganismos como T.asperellum(T8a)yC.gloeosporioides(ATCCMYA456), este último mostró la capacidad de causar antracnosis 100% de los frutos inoculados. El agente de control biológico, T. asperellum T8a, mostró una inhibición in vitro de 91% en el crecimiento del fitopatógeno, mediante mecanismos micoparasíticos. Así, ensayos de concentración mínima inhibitoria de Captan 50® vs. los microorganismos en estudio fueron realizados, observando que concentraciones iguales o mayores a 0.5 g L-1 del fungicida inhibieron completamente el crecimiento del fitopatógeno, sin embargo, concentraciones menores (0.1 y 0.25 g L-1) inhibieron el crecimiento de éste sólo en 36%. Por otro lado, el crecimiento de T. asperellum T8a fue inhibido 6% en dosis de 0.5 g L-1 de Captan 50®, no observando efectos sobre esta cepa a dosis menores del fungicida. De esta manera, la concentración de 0.1 g L-1 de Captan 50® fue co-aplicada in vitro con T. asperellum T8a, observando una inhibición sinérgica de C. gloeosporioides ATCCMYA456,alcanzó99%.Losdatosindicanelpotencial de la presente alternativa integrada para reducir la aplicación de Captan 50®, potenciar el control de C. gloeosporioides, y reducir los problemas económicos/ambientales por el uso de este fungicida en campo.

Published
2017

17. [Usefulness and reliabitlity of musculoskeletal point of care ultrasound in family practice (2): Muscle injuries, osteoarthritis, rheumatological diseases and eco-guided procedures]

Author

Ignacio Manuel, Sánchez Barrancos, Susana, Manso García, Pedro, Lozano Gago, Trinidad, Hernández Rodríguez, Laura, Conangla Ferrín, Antonio Lorenzo, Ruiz Serrano, and Roberto, González Santisteban

Subjects
Soft Tissue Injuries, Point-of-Care Systems, Ecografía clínica, Reproducibility of Results, Fiabilidad, Usefulness, Reliability, Artículo especial, Treatment Outcome, Rheumatic Diseases, Osteoarthritis, Humans, Medicina familiar, Point of care ultrasound, Family Practice, Muscle, Skeletal, Ultrasonography, Interventional, Utilidad, Ultrasonography
Abstract

Highlights • La ecografía clínica es una herramienta que complementa la anamnesis y exploración física, lo que facilita y agiliza la toma de decisiones en cualquier entorno de atención médica • El médico de familia es el especialista que más se puede beneficiar del empleo de la ecografía porque debe ser competente en todos los terrenos de la patología • La ecografía musculoesquelética, por su fiabilidad, seguridad, reproducibilidad y bajo coste debe estar accesible para su empleo en atención primaria • La ecografía clínica musculoesquelética, aplicada en escenarios concretos, y con una técnica de estudio definida, confirma o descarta patología con elevada fiabilidad • Este artículo revisa la fiabilidad y utilidad de la ecografía clínica musculoesquelética, Resumen Este artículo es continuación de la revisión iniciada en el número anterior sobre la utilidad de la ecografía clínica musculoesquelética en atención primaria, y completa los escenarios de lesiones musculares, artrosis, enfermedades reumatológicas y procesos ecoguiados.

Published
2018

18. A giant exoplanet orbiting a very-low-mass star challenges planet formation models

Author

Morales, J. C., primary, Mustill, A. J., additional, Ribas, I., additional, Davies, M. B., additional, Reiners, A., additional, Bauer, F. F., additional, Kossakowski, D., additional, Herrero, E., additional, Rodríguez, E., additional, López-González, M. J., additional, Rodríguez-López, C., additional, Béjar, V. J. S., additional, González-Cuesta, L., additional, Luque, R., additional, Pallé, E., additional, Perger, M., additional, Baroch, D., additional, Johansen, A., additional, Klahr, H., additional, Mordasini, C., additional, Anglada-Escudé, G., additional, Caballero, J. A., additional, Cortés-Contreras, M., additional, Dreizler, S., additional, Lafarga, M., additional, Nagel, E., additional, Passegger, V. M., additional, Reffert, S., additional, Rosich, A., additional, Schweitzer, A., additional, Tal-Or, L., additional, Trifonov, T., additional, Zechmeister, M., additional, Quirrenbach, A., additional, Amado, P. J., additional, Guenther, E. W., additional, Hagen, H.-J., additional, Henning, T., additional, Jeffers, S. V., additional, Kaminski, A., additional, Kürster, M., additional, Montes, D., additional, Seifert, W., additional, Abellán, F. J., additional, Abril, M., additional, Aceituno, J., additional, Aceituno, F. J., additional, Alonso-Floriano, F. J., additional, Ammler-von Eiff, M., additional, Antona, R., additional, Arroyo-Torres, B., additional, Azzaro, M., additional, Barrado, D., additional, Becerril-Jarque, S., additional, Benítez, D., additional, Berdiñas, Z. M., additional, Bergond, G., additional, Brinkmöller, M., additional, del Burgo, C., additional, Burn, R., additional, Calvo-Ortega, R., additional, Cano, J., additional, Cárdenas, M. C., additional, Guillén, C. Cardona, additional, Carro, J., additional, Casal, E., additional, Casanova, V., additional, Casasayas-Barris, N., additional, Chaturvedi, P., additional, Cifuentes, C., additional, Claret, A., additional, Colomé, J., additional, Czesla, S., additional, Díez-Alonso, E., additional, Dorda, R., additional, Emsenhuber, A., additional, Fernández, M., additional, Fernández-Martín, A., additional, Ferro, I. M., additional, Fuhrmeister, B., additional, Galadí-Enríquez, D., additional, Cava, I. Gallardo, additional, Vargas, M. L. García, additional, Garcia-Piquer, A., additional, Gesa, L., additional, González-Álvarez, E., additional, Hernández, J. I. González, additional, González-Peinado, R., additional, Guàrdia, J., additional, Guijarro, A., additional, de Guindos, E., additional, Hatzes, A. P., additional, Hauschildt, P. H., additional, Hedrosa, R. P., additional, Hermelo, I., additional, Arabi, R. Hernández, additional, Otero, F. Hernández, additional, Hintz, D., additional, Holgado, G., additional, Huber, A., additional, Huke, P., additional, Johnson, E. N., additional, de Juan, E., additional, Kehr, M., additional, Kemmer, J., additional, Kim, M., additional, Klüter, J., additional, Klutsch, A., additional, Labarga, F., additional, Labiche, N., additional, Lalitha, S., additional, Lampón, M., additional, Lara, L. M., additional, Launhardt, R., additional, Lázaro, F. J., additional, Lizon, J.-L., additional, Llamas, M., additional, Lodieu, N., additional, López del Fresno, M., additional, Salas, J. F. López, additional, López-Santiago, J., additional, Madinabeitia, H. Magán, additional, Mall, U., additional, Mancini, L., additional, Mandel, H., additional, Marfil, E., additional, Molina, J. A. Marín, additional, Martín, E. L., additional, Martín-Fernández, P., additional, Martín-Ruiz, S., additional, Martínez-Rodríguez, H., additional, Marvin, C. J., additional, Mirabet, E., additional, Moya, A., additional, Naranjo, V., additional, Nelson, R. P., additional, Nortmann, L., additional, Nowak, G., additional, Ofir, A., additional, Pascual, J., additional, Pavlov, A., additional, Pedraz, S., additional, Medialdea, D. Pérez, additional, Pérez-Calpena, A., additional, Perryman, M. A. C., additional, Rabaza, O., additional, Ballesta, A. Ramón, additional, Rebolo, R., additional, Redondo, P., additional, Rix, H.-W., additional, Rodler, F., additional, Trinidad, A. Rodríguez, additional, Sabotta, S., additional, Sadegi, S., additional, Salz, M., additional, Sánchez-Blanco, E., additional, Carrasco, M. A. Sánchez, additional, Sánchez-López, A., additional, Sanz-Forcada, J., additional, Sarkis, P., additional, Sarmiento, L. F., additional, Schäfer, S., additional, Schlecker, M., additional, Schmitt, J. H. M. M., additional, Schöfer, P., additional, Solano, E., additional, Sota, A., additional, Stahl, O., additional, Stock, S., additional, Stuber, T., additional, Stürmer, J., additional, Suárez, J. C., additional, Tabernero, H. M., additional, Tulloch, S. M., additional, Veredas, G., additional, Vico-Linares, J. I., additional, Vilardell, F., additional, Wagner, K., additional, Winkler, J., additional, Wolthoff, V., additional, Yan, F., additional, and Osorio, M. R. Zapatero, additional

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results