WASP-8b: a retrograde transiting planet in a multiple system

D. Queloz; D.~R. Anderson; A. Collier Cameron; M. Gillon; L. Hebb; C. Hellier; P. Maxted; F. Pepe; D. Pollacco; D. Ségransan; B. Smalley; A.~H.~M.~J. Triaud; S. Udry; R. West

doi:10.1051/0004-6361/201014768

WASP-8b: a retrograde transiting planet in a multiple system

D. Queloz, D.~R. Anderson, A. Collier Cameron, M. Gillon, L. Hebb, C. Hellier, P. Maxted, F. Pepe, D. Pollacco, D. Ségransan, B. Smalley, A.~H.~M.~J. Triaud, S. Udry, R. West

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

96 Citations (Scopus)

Abstract

We report the discovery of WASP-8b, a transiting planet of 2.25 plusmn 0.08 M$_Jup$ on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the ldquoclassicalrdquo disc-migration theory. Based on observations made with HARPS spectrograph on the 3.6-m ESO telescope and the EULER Swiss telescope at La Silla Observatory, Chile.Radial velocity data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/517/L1

Original language	English
Pages (from-to)	L1
Journal	Astronomy and Astrophysics
Volume	517
DOIs	https://doi.org/10.1051/0004-6361/201014768
Publication status	Published - 1 Jul 2010

Keywords

stars: individual: WASP-8, techniques: photometric, techniques: spectroscopic, planet-star interactions, planetary systems, techniques: radial velocities

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10.1051/0004-6361/201014768

Cite this

@article{46afe23c210e4c71b097d971e66d52a3,

title = "WASP-8b: a retrograde transiting planet in a multiple system",

abstract = "We report the discovery of WASP-8b, a transiting planet of 2.25 plusmn 0.08 M$_Jup$ on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the ldquoclassicalrdquo disc-migration theory. Based on observations made with HARPS spectrograph on the 3.6-m ESO telescope and the EULER Swiss telescope at La Silla Observatory, Chile.Radial velocity data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/517/L1 ",

keywords = "stars: individual: WASP-8, techniques: photometric, techniques: spectroscopic, planet-star interactions, planetary systems, techniques: radial velocities",

author = "D. Queloz and D.~R. Anderson and {Collier Cameron}, A. and M. Gillon and L. Hebb and C. Hellier and P. Maxted and F. Pepe and D. Pollacco and D. S{\'e}gransan and B. Smalley and A.~H.~M.~J. Triaud and S. Udry and R. West",

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month = jul,

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doi = "10.1051/0004-6361/201014768",

language = "English",

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journal = "Astronomy and Astrophysics",

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TY - JOUR

T1 - WASP-8b: a retrograde transiting planet in a multiple system

AU - Queloz, D.

AU - Anderson, D.~R.

AU - Collier Cameron, A.

AU - Gillon, M.

AU - Hebb, L.

AU - Hellier, C.

AU - Maxted, P.

AU - Pepe, F.

AU - Pollacco, D.

AU - Ségransan, D.

AU - Smalley, B.

AU - Triaud, A.~H.~M.~J.

AU - Udry, S.

AU - West, R.

PY - 2010/7/1

Y1 - 2010/7/1

N2 - We report the discovery of WASP-8b, a transiting planet of 2.25 plusmn 0.08 M$_Jup$ on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the ldquoclassicalrdquo disc-migration theory. Based on observations made with HARPS spectrograph on the 3.6-m ESO telescope and the EULER Swiss telescope at La Silla Observatory, Chile.Radial velocity data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/517/L1

AB - We report the discovery of WASP-8b, a transiting planet of 2.25 plusmn 0.08 M$_Jup$ on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the ldquoclassicalrdquo disc-migration theory. Based on observations made with HARPS spectrograph on the 3.6-m ESO telescope and the EULER Swiss telescope at La Silla Observatory, Chile.Radial velocity data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/517/L1

KW - stars: individual: WASP-8, techniques: photometric, techniques: spectroscopic, planet-star interactions, planetary systems, techniques: radial velocities

U2 - 10.1051/0004-6361/201014768

DO - 10.1051/0004-6361/201014768

M3 - Article

SN - 0004-6361

VL - 517

SP - L1

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

WASP-8b: a retrograde transiting planet in a multiple system

Abstract

Keywords

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