Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Rodríguez López, Cristina"'
Autor:
Scholz, Aleks, Muzic, Koraljka, Almendros-Abad, Victor, Natta, Antonella, Ruiz-Rodriguez, Dary, Cieza, Lucas, Rodriguez-Lopez, Cristina
Publikováno v:
Open Journal of Astrophysics, Vol. 7 2024
We report on a search for variability in the young brown dwarf SST1624 (~M7 spectral type, M~0.05Msol), previously found to feature an expanding gaseous shell and to undergo quasi-spherical mass loss. We find no variability on timescales of 1-6hours.
Externí odkaz:
http://arxiv.org/abs/2307.14087
Autor:
Pérez-Torres, Miguel, Gómez, José Francisco, Ortiz, José Luis, Leto, Paolo, Anglada, Guillem, Gómez, José Luis, Rodríguez, Eloy, Trigilio, Corrado, Amado, Pedro J., Alberdi, Antonio, Anglada-Escudé, Guillem, Osorio, Mayra, Umana, Grazia, Berdiñas, Zaira, López-González, María José, Morales, Nicolás, Rodríguez-López, Cristina, Chibueze, James
Publikováno v:
A&A 645, A77 (2021)
We present results from the most comprehensive radio monitoring campaign towards the closest star to our Sun, Proxima Centauri. We report 1.1 to 3.1 GHz observations with the Australian Telescope Compact Array over 18 consecutive days in April 2017.
Externí odkaz:
http://arxiv.org/abs/2012.02116
Autor:
Challener, Ryan C., Harrington, Joseph, Jenkins, James, Kurtovic, Nicolás T., Ramirez, Ricardo, McIntyre, Kathleen J., Himes, Michael D., Rodríguez, Eloy, Anglada-Escudé, Guillem, Dreizler, Stefan, Ofir, Aviv, Rojas, Pablo A. Peña, Ribas, Ignasi, Rojo, Patricio, Kipping, David, Butler, R. Paul, Amado, Pedro J., Rodríguez-López, Cristina, Palle, Enric, Murgas, Felipe
We observed Proxima Centauri with the Spitzer Space Telescope InfraRed Array Camera (IRAC) five times in 2016 and 2017 to search for transits of Proxima Centauri b. Following standard analysis procedures, we found three asymmetric, transit-like event
Externí odkaz:
http://arxiv.org/abs/2011.05270
Autor:
Jenkins, James S., Harrington, Joseph, Challener, Ryan C., Kurtovic, Nicolás T., Ramirez, Ricardo, Peña, Jose, McIntyre, Kathleen J., Himes, Michael D., Rodríguez, Eloy, Anglada-Escudé, Guillem, Dreizler, Stefan, Ofir, Aviv, Rojas, Pablo A. Peña, Ribas, Ignasi, Rojo, Patricio, Kipping, David, Butler, R. Paul, Amado, Pedro J., Rodríguez-López, Cristina, Kempton, Eliza M. -R., Palle, Enric, Murgas, Felipe
We report Spitzer Space Telescope observations during predicted transits of the exoplanet Proxima Centauri b. As the nearest terrestrial habitable-zone planet we will ever discover, any potential transit of Proxima b would place strong constraints on
Externí odkaz:
http://arxiv.org/abs/1905.01336
Autor:
Anglada, Guillem, Amado, Pedro J., Ortiz, Jose L., Gómez, José F., Macías, Enrique, Alberdi, Antxon, Osorio, Mayra, Gómez, José L., de Gregorio-Monsalvo, Itziar, Pérez-Torres, Miguel A., Anglada-Escudé, Guillem, Berdiñas, Zaira M., Jenkins, James S., Jimenez-Serra, Izaskun, Lara, Luisa M., López-González, Maria J., López-Puertas, Manuel, Morales, Nicolas, Ribas, Ignasi, Richards, Anita M. S., Rodríguez-López, Cristina, Rodriguez, Eloy
Proxima Centauri, the star closest to our Sun, is known to host at least one terrestrial planet candidate in a temperate orbit. Here we report the ALMA detection of the star at 1.3 mm wavelength and the discovery of a belt of dust orbiting around it
Externí odkaz:
http://arxiv.org/abs/1711.00578
Autor:
Berdiñas, Zaira M., Rodríguez-López, Cristina, Amado, Pedro J., Anglada-Escudé, Guillem, Barnes, John R., MacDonald, James, Zechmeister, Mathias, Sarmiento, Luis F.
Stellar oscillations appear all across the Hertzsprung-Russell diagram. Recent theoretical studies support their existence also in the atmospheres of M dwarfs. These studies predict for them short periodicities ranging from 20~min to 3~h. Our Cool Ti
Externí odkaz:
http://arxiv.org/abs/1705.04690
Autor:
Anglada-Escudé, Guillem, Amado, Pedro J., Barnes, John, Berdiñas, Zaira M., Butler, R. Paul, Coleman, Gavin A. L., de la Cueva, Ignacio, Dreizler, Stefan, Endl, Michael, Giesers, Benjamin, Jeffers, Sandra V., Jenkins, James S., Jones, Hugh R. A., Kiraga, Marcin, Kürster, Martin, López-González, María J., Marvin, Christopher J., Morales, Nicolás, Morin, Julien, Nelson, Richard P., Ortiz, José L., Ofir, Aviv, Paardekooper, Sijme-Jan, Reiners, Ansgar, Rodríguez, Eloy, Rodríguez-López, Cristina, Sarmiento, Luis F., Strachan, John P., Tsapras, Yiannis, Tuomi, Mikko, Zechmeister, Mathias
Publikováno v:
Nature 536 (2016) 437-440
At a distance of 1.295 parsecs, the red-dwarf Proxima Centauri ($\alpha$ Centauri C, GL 551, HIP 70890, or simply Proxima) is the Sun's closest stellar neighbor and one of the best studied low-mass stars. It has an effective temperature of only $\sim
Externí odkaz:
http://arxiv.org/abs/1609.03449
Autor:
Berdiñas, Zaira M., Amado, Pedro J., Anglada-Escudé, Guillem, Rodríguez-López, Cristina, Barnes, John
Understanding the sources of instrumental systematic noise is a must to improve the design of future spectrographs. In this study, we alternated observations of the well-suited pair of M-stars GJ 725A+B to delve into the sub-night HARPS-N response. B
Externí odkaz:
http://arxiv.org/abs/1604.05312
Autor:
Anglada-Escudé, Guillem, Tuomi, Mikko, Arriagada, Pamela, Zechmeister, Mathias, Jenkins, James S., Ofir, Aviv, Dreizler, Stefan, Gerlach, Enrico, Marvin, Chistopher J., Reiners, Ansgar, Jeffers, Sandra V., Butler, Paul, Vogt, Steven S., Amado, Pedro J., Rodríguez-López, Cristina, Berdiñas, Zaira M., Morin, Julien, Crane, Jeffrey D., Shectman, Stephen A., Díaz, Matías, Sarmiento, Luis F., Jones, Hugh R. A.
Stellar activity may induce Doppler variability at the level of a few m/s which can then be confused by the Doppler signal of an exoplanet orbiting the star. To first order, linear correlations between radial velocity measurements and activity indice
Externí odkaz:
http://arxiv.org/abs/1506.09072
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