HATS-4b: A dense hot Jupiter transiting a super metal-rich G star
Date
2014
Authors
Jordan, A.
Brahm, R.
Bakos, G. A.
Bayliss, Daniel
Zhou, Guyin (George)
Mancini, L.
Mohler-Fischer, M.
Ciceri, Simona
Schmidt, Brian
Shectman, Stephen
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University of Chicago Press
Abstract
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 Mp ≈ 1.32 MJup, radius of Rp ≈ 1.02 RJup, and
density of ρp = 1.55 ± 0.16 g cm−3 ≈ 1.24 ρJup. 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 MJ 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.
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Astronomical Journal
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Journal article
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Open Access
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