Zobrazeno 1 - 10
of 9 809
pro vyhledávání: '"P Amado"'
Autor:
Cifuentes, C., Caballero, J. A., González-Payo, J., Amado, P. J., Béjar, V. J. S., Burgasser, A. J., Cortés-Contreras, M., Lodieu, N., Montes, D., Quirrenbach, A., Reiners, A., Ribas, I., Sanz-Forcada, J., Seifert, W., Osorio, M. R. Zapatero
Multiplicity studies greatly benefit from focusing on M dwarfs because they are often paired in a variety of configurations with both stellar and substellar objects, including exoplanets. We aim to address the observed multiplicity of M dwarfs by con
Externí odkaz:
http://arxiv.org/abs/2412.12264
Autor:
Ruh, H. L., Zechmeister, M., Reiners, A., Nagel, E., Shan, Y., Cifuentes, C., Jeffers, S. V., Tal-Or, L., Béjar, V. J. S., Amado, P. J., Caballero, J. A., Quirrenbach, A., Ribas, I., Aceituno, J., Hatzes, A. P., Henning, Th., Kaminski, A., Montes, D., Morales, J. C., Schöfer, P., Schweitzer, A., Varas, R.
Publikováno v:
A&A, 692, A138 (2024)
Radial velocity (RV) jitter represents an intrinsic limitation on the precision of Doppler searches for exoplanets that can originate from both instrumental and astrophysical sources. We aim to determine the RV jitter floor in M dwarfs and investigat
Externí odkaz:
http://arxiv.org/abs/2412.07691
Autor:
Peña-Moñino, L., Pérez-Torres, M., Kansabanik, D., Blázquez-Calero, G., Kavanagh, R. D., Gómez, J. F., Moldón, J., Alberdi, A., Amado, P. J., Anglada, G., Caballero, J. A., Mohan, A., Leto, P., Narang, M., Osorio, M., Revilla, D., Trigilio, C.
We search for radio emission from star-planet interactions in the M-dwarf system GJ~486, which hosts an Earth-like planet. We observed the GJ~486 system with the upgraded Giant Metrewave Radio Telescope (uGMRT) from 550 to 750 MHz in nine different e
Externí odkaz:
http://arxiv.org/abs/2411.17689
Autor:
Salvador-Sánchez, J., Pérez-Rodriguez, A., Clericò, V., Zheliuk, O., Zeitler, U., Watanabe, K., Taniguchi, T., Diez, E., Amado, M., Bellani, V.
Publikováno v:
Eur. Phys. J. Plus 139, 979 (2024)
In a twisted graphene on hexagonal Boron Nitride, the presence of a gap and the breaking of the symmetry between carbon sublattices leads to multicomponent fractional quantum Hall effect (FQHE) due to the electrons correlation. We report on the FQHE
Externí odkaz:
http://arxiv.org/abs/2411.07958
Autor:
Cortés-Contreras, M., Caballero, J. A., Montes, D., Cardona-Guillén, C., Béjar, V. J. S., Cifuentes, C., Tabernero, H. M., Osorio, M. R. Zapatero, Amado, P. J., Jeffers, S. V., Lafarga, M., Lodieu, N., Quirrenbach, A., Reiners, A., Ribas, I., Schöfer, P., Schweitzer, A., Seifert, W.
Aims. Our goals are to characterise the kinematic properties and to identify young and old stars among the M dwarfs of the CARMENES input catalogue. Methods. We compiled the spectral types, proper motions, distances, and radial velocities for 2187 M
Externí odkaz:
http://arxiv.org/abs/2411.06825
Autor:
Olivo, Vicente Amado, Kerzendorf, Wolfgang, Cherinka, Brian, Shields, Joshua V., Didier, Annie, von der Wense, Katharina
Large scientific institutions, such as the Space Telescope Science Institute, track the usage of their facilities to understand the needs of the research community. Astrophysicists incorporate facility usage data into their scientific publications, e
Externí odkaz:
http://arxiv.org/abs/2411.00987
Autor:
Kaur, Simranpreet, Viganò, Daniele, Béjar, Víctor J. S., Monge, Álvaro Sánchez, Morata, Òscar, Kansabanik, Devojyoti, Girart, Josep Miquel, Morales, Juan Carlos, Anglada-Escudé, Guillem, Murgas, Felipe, Shan, Yutong, Ilin, Ekaterina, Pérez-Torres, Miguel, Osorio, María Rosa Zapatero, Amado, Pedro J., Caballero, José A., Del Sordo, Fabio, Palle, Enric, Quirrenbach, Andreas, Reiners, Ansgar, Ribas, Ignasi
Publikováno v:
A&A 691, L17 (2024)
Scallop-shell stars, a recently discovered class of young M dwarfs, show complex optical light curves that are characterized by periodic dips as well as other features that are stable over tens to hundreds of rotation cycles. The origin of these feat
Externí odkaz:
http://arxiv.org/abs/2410.22449
We investigate the retarded Green's function and the greybody factor in asymptotically AdS black holes. Using the connection coefficients of the Heun equation, expressed in terms of the Nekrasov-Shatashvili (NS) free energy of an $SU(2)$ supersymmetr
Externí odkaz:
http://arxiv.org/abs/2409.07370
Autor:
Liebing, F., Jeffers, S. V., Gorrini, P., Haswell, C. A., Dreizler, S., Barnes, J. R., Hartogh, C., Koseleva, V., Del Sordo, F., Amado, P. J., Caballero, J. A., López-González, M. J., Morales, N., Reiners, A., Ribas, I., Quirrenbach, A., Rodríguez, E., Tal-Or, L., Tsapras, Y.
Aims. Using HARPS spectroscopic data obtained by the RedDots campaign, as well as archival data from HARPS and CARMENES, supplemented with ASH2 and T90 photometry, we aim to search for additional planets around the three M dwarfs GJ 832, GJ 674, and
Externí odkaz:
http://arxiv.org/abs/2409.01173
Autor:
Tabernero, H. M., Shan, Y., Caballero, J. A., Duque-Arribas, C., Montes, D., Hernández, J. I. González, Osorio, M. R. Zapatero, Schweitzer, A., Henning, Th., Cortés-Contreras, M., Quirrenbach, A., Amado, P. J., Reiners, A., Ribas, I., Bergond, G., Morales, J. C.
We present the abundances of magnesium (Mg) and silicon (Si) for 314 dwarf stars with spectral types in the interval K7.0-M5.5 (Teff range ~4200-3050 K) observed with the CARMENES high-resolution spectrograph at the 3.5 m telescope at the Calar Alto
Externí odkaz:
http://arxiv.org/abs/2407.19969