Search for planets around stars with wide brown dwarfs

0573495 - ASÚ 2024 RIV FR eng J - Článek v odborném periodiku
Šubjak, Ján - Lodieu, N. - Kabáth, Petr - Boffin, H.M.J. - Nowak, G. - Grundahl, F. - Béjar, V.J.S. - Zapatero Osorio, M.R. - Antoci, V.
Search for planets around stars with wide brown dwarfs.
Astronomy & Astrophysics. Roč. 671, March (2023), č. článku A10. ISSN 0004-6361. E-ISSN 1432-0746
Institucionální podpora: RVO:67985815
Klíčová slova: spectroscopic techniques * radial velocities * photometric
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 6.5, rok: 2022
Způsob publikování: Open access

This work aims to better understand the role of wide brown dwarf companions in planetary systems. We obtained high-resolution spectra of six bright stars with co-moving wide substellar companions with the high-resolution SONG, CARMENES, and STELLA spectrographs. We used these spectra to derive radial velocities together with a complete set of physical stellar parameters. We then investigated radial velocity signals and discuss the fraction of planets in such systems. We also re-analysed the ages of our targets, which were used to derive the physical parameters of wide brown dwarf companions. Finally, a compilation of systems with known planets from the literature was considered along with our sample to search for possible peculiarities in their parameter distributions.
Trvalý link: https://hdl.handle.net/11104/0343931