Dergi makalesi Açık Erişim
Basturk, Ozgur; Yalcinkaya, S.; Esmer, E. M.; Tanriverdi, T.; Mancini, L.; Daylan, T.; Southworth, J.; Keten, B.
We update the main physical and orbital properties of the transiting hot Saturn planet HAT-P-19 b, based on a global modelling of high-precision transit and occultation light curves, taken with ground-based and space telescopes, archive spectra and radial velocity measurements, brightness values from broad-band photometry, and Gaia parallax. We collected 65 light curves by amateur and professional observers, measured mid-transit times, and analysed their differences from calculated transit timings based on reference ephemeris information, which we update as a result. We have not found any periodicity in the residuals of a linear trend, which we attribute to the accumulation of uncertainties in the reference mid-transit time and the orbital period. We comment on the scenarios describing the formation and migration of this hot-Saturn type exoplanet with a bloated atmosphere yet a small core, although it is orbiting a metal-rich ([Fe/H] = 0.24 dex) host star. Finally, we review the planetary mass-radius, the orbital period-radius, and density, and the stellar metallicity-core mass diagrams, based on the parameters we derive for HAT-P-19 b and those of the other 70 transiting Saturn-mass planets from the NASA Exoplanet Archive.
Dosya adı | Boyutu | |
---|---|---|
bib-3d59eeb3-8409-4025-be87-0de4fd25fe1a.txt
md5:1f06f519d056db7eccf9e911beb20097 |
283 Bytes | İndir |
Görüntülenme | 17 |
İndirme | 5 |
Veri hacmi | 1.4 kB |
Tekil görüntülenme | 16 |
Tekil indirme | 5 |