skip to main content

Title: HATS-4b: A dense hot Jupiter transiting a super metal-rich G star

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{sub p} ≈ 1.32 M {sub Jup}, radius of R{sub p} ≈ 1.02 R {sub Jup}, and density of ρ {sub p} = 1.55 ± 0.16 g cm{sup –3} ≈1.24 ρ{sub Jup}. The host star has a mass of 1.00 M {sub ☉}, a radius of 0.92 R {sub ☉}, 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 {sub J} and is thus likely to have a significant content of heavy elements of the order of 75 M {sub ⊕}. 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 vsin i and macroturbulence using high resolution spectra.
Authors:
; ; ; ;  [1] ; ; ; ; ; ;  [2] ; ;  [3] ; ; ; ; ;  [4] ;  [5] ;  [6] more »; « less
  1. Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago (Chile)
  2. Department of Astrophysical Sciences, Princeton University, NJ 08544 (United States)
  3. The Australian National University, Canberra (Australia)
  4. Max Planck Institute for Astronomy, Heidelberg (Germany)
  5. Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan)
  6. Niels Bohr Institute, Copenhagen University (Denmark)
Publication Date:
OSTI Identifier:
22342287
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (New York, N.Y. Online); Journal Volume: 148; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CLASSIFICATION; JUPITER PLANET; MASS; METALLICITY; METALS; RADIAL VELOCITY; REDUCTION; RESOLUTION; SPECTRA; STARS