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

被引：19

作者：

Cappetta, M. ^{[1
]}

Saglia, R. P. ^{[1
,2
]}

Birkby, J. L. ^{[3
,4
]}

Koppenhoefer, J. ^{[1
,2
]}

Pinfield, D. J. ^{[5
]}

Hodgkin, S. T. ^{[3
]}

Cruz, P. ^{[6
]}

Kovacs, G. ^{[3
]}

Sipocz, B. ^{[5
]}

Barrado, D. ^{[6
,7
]}

Nefs, B. ^{[4
]}

Pavlenko, Y. V. ^{[8
]}

Fossati, L. ^{[9
]}

del Burgo, C. ^{[10
,11
,12
]}

Martin, E. L. ^{[13
]}

Snellen, I. ^{[4
]}

Barnes, J. ^{[5
]}

Bayo, A. ^{[14
]}

Campbell, D. A. ^{[5
]}

Catalan, S. ^{[5
]}

Galvez-Ortiz, M. C. ^{[13
]}

Goulding, N. ^{[5
]}

Haswell, C. ^{[9
]}

Ivanyuk, O. ^{[8
]}

Jones, H. R. ^{[5
]}

Kuznetsov, M. ^{[8
]}

Lodieu, N. ^{[15
]}

Marocco, F. ^{[5
]}

Mislis, D. ^{[3
]}

Murgas, F. ^{[15
,16
]}

Napiwotzki, R. ^{[5
]}

Palle, E. ^{[15
,16
]}

Pollacco, D. ^{[17
]}

Sarro Baro, L. ^{[18
]}

Solano, E. ^{[6
]}

Steele, P. ^{[1
]}

Stoev, H. ^{[6
]}

Tata, R. ^{[15
,16
]}

Zendejas, J. ^{[1
,2
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[2] Univ Observ Munich, D-81679 Munich, Germany

[3] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[4] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

[5] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England

[6] Ctr Astrobiol CSIC INTA, Dept Astrofis, E-28691 Villanueva De La Canada, Spain

[7] Ctr Astronm Hispano Alemn, Calar Alto Observ, E-04004 Almera, Spain

[8] Ukrainian Acad Sci, Main Astron Observ, UA-03680 Kiev 127, Ukraine

[9] Open Univ, Dept Phys Sci, Milton Keynes MK7 6AA, Bucks, England

[10] UNINOVA CA3, P-2825149 Monte De Caparica, Caparica, Portugal

[11] Dublin Inst Adv Studies, Sch Cosm Phys, Dublin 2, Ireland

[12] INAOE, Puebla 72000, Pue, Mexico

[13] Ctr Astrobiol CSIC INTA, E-28850 Madrid, Spain

[14] European So Observ, Santiago 19, Chile

[15] Inst Astrofis Canarias, E-38200 Tenerife, Spain

[16] ULL, Dept Astrofis, E-38205 Tenerife, Spain

[17] Queens Univ Belfast, Astrophys Res Ctr, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[18] UNED, Dept Inteligencia Artificial, Madrid 28040, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 427卷 / 03期

关键词：

techniques: photometric; techniques: radial velocities; planets and satellites: detection; planets and satellites: individual: WTS1-b; planetary systems; OHMIC DISSIPATION; SYNTHETIC SPECTRA; MASS STARS; SKY SURVEY; STELLAR; CANDIDATES; INTERIORS; MODELS; RADII; IDENTIFICATION;

D O I：

10.1111/j.1365-2966.2012.21937.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 1 per cent to J similar to 16 were constructed for similar to 60 000 stars and searched for periodic transit signals. For one of the most promising transiting candidates, high-resolution spectra taken at the HobbyEberly 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 3.35 d, a planetary mass of 4.01 +/- 0.35 MJ and a planetary radius of 1.49-0.18+0.16 RJ. WTS-1b has one of the largest radius anomalies among the known hot Jupiters in the mass range 35 MJ. The high irradiation from the host star ranks the planet in the pM class.

引用

页码：1877 / 1890

页数：14

共 27 条

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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.
Campbell, D.
Catalan, S.
Galvez-Ortiz, M. C.
Goulding, N.
Haswell, C.
Ivanyuk, O.
Jones, H.
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.
Zendejas, J.
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Cappetta, M.
Saglia, R. P.
Birkby, J. L.
Koppenhoefer, J.
Pinfield, D. J.
Hodgkin, S. T.
Cruz, P.
Kovacs, G.
Sipocz, B.
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Pavlenko, Y. V.
Fossati, L.
del Burgo, C.
Martin, E. L.
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Barnes, J.
Campbell, D.
Catalan, S.
Galvez-Ortiz, M. C.
Goulding, N.
Haswell, C.
Ivanyuk, O.
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Marocco, F.
Mislis, D.
Murgas, F.
Napiwotzki, R.
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