2012MNRAS.427.1877C

Query : 2012MNRAS.427.1877C

2012MNRAS.427.1877C - Mon. Not. R. Astron. Soc., 427, 1877-1890 (2012/December-2)

The first planet detected in the WTS: an inflated hot Jupiter in a 3.35d orbit around a late F star.

CAPPETTA M., SAGLIA R.P., BIRKBY J.L., KOPPENHOEFER J., PINFIELD D.J., HODGKIN S.T., CRUZ P., KOVACS G., SIPOCZ B., BARRADO D., NEFS B., PAVLENKO Y.V., FOSSATI L., DEL BURGO C., MARTIN E.L., SNELLEN I., BARNES J., BAYO A., CAMPBELL D.A., CATALAN S., GALVEZ-ORTIZ M.C., GOULDING N., HASWELL C., IVANYUK O., JONES H.R., KUZNETSOV M., LODIEU N., MAROCCO F., MISLIS D., MURGAS F., NAPIWOTZKI R., PALLE E., POLLACCO D., SARRO BARO L., SOLANO E., STEELE P., STOEV H., TATA R. and ZENDEJAS J.

Abstract (from CDS):

We report the discovery of WTS-1b, the first extrasolar planet found by the WFCAM Transit Survey, which began observations at the 3.8-m United Kingdom Infrared Telescope (UKIRT) in 2007 August. Light curves comprising almost 1200 epochs with a photometric precision of better than 1per cent to J ∼ 16 were constructed for ∼ 60000 stars and searched for periodic transit signals. For one of the most promising transiting candidates, high-resolution spectra taken at the Hobby–Eberly Telescope (HET) allowed us to estimate the spectroscopic parameters of the host star, a late-F main-sequence dwarf (V = 16.13) with possibly slightly subsolar metallicity, and to measure its radial velocity variations. The combined analysis of the light curves and spectroscopic data resulted in an orbital period of the substellar companion of 3.35d, a planetary mass of 4.01±0.35MJ and a planetary radius of \mn 1\mo.\mn 49\mo –\mn 0.18\mo +\mn 0.16RJ. WTS-1b has one of the largest radius anomalies among the known hot Jupiters in the mass range 3–5MJ. The high irradiation from the host star ranks the planet in the pM class.

Based on observations collected at the 3.8-m United Kingdom Infrared Telescope (Hawaii, USA), the Hobby–Eberly Telescope (Texas, USA), the 2.5-m Isaac Newton Telescope (La Palma, Spain), the William Herschel Telescope (La Palma, Spain), the German–Spanish Astronomical Centre (Calar Alto, Spain), the Kitt Peak National Observatory (Arizona, USA) and the Hertfordshire's Bayfordbury Observatory.


Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): techniques: photometric - techniques: radial velocities - planets and satellites: detection - planets and satellites: individual: WTS1-b - planetary systems

Nomenclature: WTS-N (No. 1), WTS-Na (No. 1b).

Errata: errata vol. 444, p. 3150 (2014), vol. 497, p. 916 (2020)

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME OGLE2-TR L9b Pl 11 07 55.1808382920 -61 08 46.537684260           ~ 30 1
2 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1274 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 WTS-1b Pl 19 35 56.4099744288 +36 17 46.794385968           ~ 18 1
5 WTS-1 * 19 35 56.4099744288 +36 17 46.794385968   17.0 16.5 16.1   F6-8V 11 1

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