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Title: HATS-3b: AN INFLATED HOT JUPITER TRANSITING AN F-TYPE STAR

We report the discovery by the HATSouth survey of HATS-3b, a transiting extrasolar planet orbiting a V = 12.4 F dwarf star. HATS-3b has a period of P = 3.5479 days, mass of M{sub p} = 1.07 M {sub J}, and radius of R{sub p} = 1.38 R {sub J}. Given the radius of the planet, the brightness of the host star, and the stellar rotational velocity (vsin i = 9.0 km s{sup –1}), this system will make an interesting target for future observations to measure the Rossiter-McLaughlin effect and determine its spin-orbit alignment. We detail the low-/medium-resolution reconnaissance spectroscopy that we are now using to deal with large numbers of transiting planet candidates produced by the HATSouth survey. We show that this important step in discovering planets produces log g and T {sub eff} parameters at a precision suitable for efficient candidate vetting, as well as efficiently identifying stellar mass eclipsing binaries with radial velocity semi-amplitudes as low as 1 km s{sup –1}.
Authors:
; ;  [1] ; ; ; ;  [2] ; ; ; ; ;  [3] ; ; ; ; ;  [4] ; ;  [5] ;  [6] more »; « less
  1. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia)
  2. Department of Astrophysical Sciences, Princeton University, NJ 08544 (United States)
  3. Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago (Chile)
  4. Max Planck Institute for Astronomy, Heidelberg (Germany)
  5. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  6. Niels Bohr Institute, Copenhagen University (Denmark)
Publication Date:
OSTI Identifier:
22273311
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (New York, N.Y. Online); Journal Volume: 146; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; ALIGNMENT; ASTRONOMY; ASTROPHYSICS; BINARY STARS; BRIGHTNESS; DWARF STARS; ECLIPSE; MASS; ORBITS; PLANETS; RADIAL VELOCITY; SPIN