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Metalicidad de estrellas con exoplanetas y discos de polvo
(Asociación Argentina de Astronomía, 2011-06)
We present an uniform comparison among three different kind of objects: cool-Jupiter exoplanet host-stars, stars with dust disks and exoplanet host-stars with dust disks. The goal of this contribution was to determine why ...
Prospects from TESS and Gaia to constrain the flatness of planetary systems
(2023)
The mutual inclination between planets orbiting the same star provides key information to understand the formation and evolution of multi-planet systems. In this work, we investigate the potential of Gaia astrometry in ...
CN and CH bands in Exoplanet Host Stars
(Asociación Argentina de Astronomía, 2012-02)
En este trabajo medimos la intensidad de las bandas moleculares CN y CH en una muestra de estrellas con y sin exoplanetas (indices δS3839, δS4142 y δCH4300). El índice δS3839 parece ser menor en estrellas sin exoplanetas. ...
Metalicidad de estrellas gigantes con planetas
(Asociación Argentina de Astronomía, 2011-06)
Presentamos una determinación homogénea de metalicidades correspondiente a 31 estrellas gigantes (incluyendo 5 que albergan planetas) con el objetivo de verificar los recientes resultados que establecen que la metalicidad ...
Analysis of the orbital evolution of exoplanets
(2016-10-01)
An exoplanet, or extrasolar planet, is a planet that does not orbit the Sun, but is around a different star, stellar remnant, or brown dwarf. Up to now, about 1900 exoplanets were discovered. To better understand the ...
Stellar parameters for stars of the CoRoT exoplanet field
(Astronomy & Astrophysics, 2015)
How Jupiters Save or Destroy Inner Neptunes around Evolved Stars
(IOP Publishing, 2020-07)
In about 6 Gyr our Sun will evolve into a red giant and finally end its life as a white dwarf. This stellar metamorphosis will occur to virtually all known host stars of exoplanetary systems and is therefore crucial for ...
Magnetic Activity Cycles in the Exoplanet Host Star ǫ Eridani
(IOP Publishing, 2013-02-01)
The active K2 dwarf ǫ Eri has been extensively characterized, both as a young solar analog and more recently as an exoplanet host star. As one of the nearest and brightest stars in the sky, it provides an unparalleled ...