Finding exoplanets orbiting young active stars – I. Technique

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Finding exoplanets orbiting young active stars – I. Technique

Stellar activity, such as starspots, can induce radial velocity (RV) variations that can mask or even mimic the RV signature of orbiting exoplanets. For this reason RV exoplanet surveys have been unsuccessful when searching for planets around young, active stars and are therefore failing to explore an important regime which can help to reveal how planets form and migrate. This paper describes a...

متن کامل

Interactions between exoplanets and the winds of young stars

The topology of the magnetic field of young stars is important not only for the investigation of magnetospheric accretion, but also responsible in shaping the large-scale structure of stellar winds, which are crucial for regulating the rotation evolution of stars. Because winds of young stars are believed to have enhanced mass-loss rates compared to those of cool, main-sequence stars, the inter...

متن کامل

Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate–Mass Subgiants

We report precision Doppler measurements of three intermediate–mass subgiants obtained at Lick and Keck Observatories. All three stars show variability in their radial velocities consistent with planet–mass companions in Keplerian orbits. We find a planet with a minimum mass MP sin i = 2.5 MJup in a 351.5 day orbit around HD192699, a planet with a minimum mass of 2.0MJup in a 341.1 day orbit ar...

متن کامل

Asteroseismology of Exoplanets-host Stars

Studying the internal structure of exoplanets-host stars compared to that of similar stars without detected planets is particularly important for the understanding of planetary formation. The observed overmetallicity of stars around which planets have been detected may be a hint in that respect. In this framework, asteroseismic studies represent an excellent tool to determine the structural dif...

متن کامل

Lithium in stars with exoplanets⋆

We present a comparison of the lithium abundances of stars with and without planetary-mass companions. New lithium abundances are reported in 79 planet hosts and 38 stars from a comparison sample. When the Li abundances of planet host stars are compared with the 157 stars in the sample of field stars of Chen et al. (2001) we find that the Li abundance distribution is significantly different, an...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society

سال: 2013

ISSN: 0035-8711,1365-2966

DOI: 10.1093/mnras/sts709