2014/02/26 by A. Jordán, Andrés Jordán, Rafael Brahm +44 · 2 citations
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Effective temperature #Exoplanet #High resolution #Hot Jupiter #Metallicity #Physics #Planet #Planetary system #RADIUS #Radial velocity #Spectral line #Spectrograph #Star (game theory) #Star formation #Stars #Stellar mass #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.1088/0004-6256/148/2/29
15 pages, 8 figures. Submitted to AJ
arxiv created 2014/02/26 · openalex publication_date 2014/06/26 · arxiv updated 2015/06/18 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We report the discovery by the HATSouth survey of HATS-4b, an extrasolar planet transiting a V = 13.46 mag G star. HATS-4b has a period of P ≈ 2.5167 days, mass of M p ≈ 1.32 M Jup , radius of R p ≈ 1.02 R Jup , and density of ρ p = 1.55 ± 0.16 g cm −3 ≈1.24 ρ Jup . The host star has a mass of 1.00 M ☉ , a radius of 0.92 R ☉ , and a very high metallicity [Fe/H]=0.43 ± 0.08. HATS-4b is among the densest known planets with masses between 1 and 2 M J and is thus likely to have a significant content of heavy elements of the order of 75 M ⊕ . In this paper we present the data reduction, radial velocity measurements, and stellar classification techniques adopted by the HATSouth survey for the CORALIE spectrograph. We also detail a technique for simultaneously estimating v sin i and macroturbulence using high resolution spectra.