WASP-3b: a strongly irradiated transiting gas-giant planet

D. Pollacco; I. Skillen; A. Collier Cameron; B. Loeillet; H.~C. Stempels; F. Bouchy; N.~P. Gibson; L. Hebb; G. Hébrard; Y.~C. Joshi; I. McDonald; B. Smalley; A.~M.~S. Smith; R.~A. Street; S. Udry; R.~G. West; D.~M. Wilson; P.~J. Wheatley; S. Aigrain; K. Alsubai; C.~R. Benn; V.~A. Bruce; D.~J. Christian; W.~I. Clarkson; B. Enoch; A. Evans; A. Fitzsimmons; C.~A. Haswell; C. Hellier; S. Hickey; S.~T. Hodgkin; K. Horne; M. Hrudková; J. Irwin; S.~R. Kane; F.~P. Keenan; T.~A. Lister; P. Maxted; M. Mayor; C. Moutou; A.~J. Norton; J.~P. Osborne; N. Parley; F. Pont; D. Queloz; R. Ryans; E. Simpson

doi:10.1111/j.1365-2966.2008.12939.x

WASP-3b: a strongly irradiated transiting gas-giant planet

D. Pollacco
, I. Skillen
, A. Collier Cameron
, B. Loeillet
, H.~C. Stempels
, F. Bouchy
, N.~P. Gibson
, L. Hebb
, G. Hébrard
, Y.~C. Joshi
, I. McDonald
, B. Smalley
, A.~M.~S. Smith
, R.~A. Street
, S. Udry
, R.~G. West
, D.~M. Wilson
, P.~J. Wheatley
, S. Aigrain
, K. Alsubai

C.~R. Benn, V.~A. Bruce, D.~J. Christian, W.~I. Clarkson, B. Enoch, A. Evans, A. Fitzsimmons, C.~A. Haswell, C. Hellier, S. Hickey, S.~T. Hodgkin, K. Horne, M. Hrudková, J. Irwin, S.~R. Kane, F.~P. Keenan, T.~A. Lister, P. Maxted, M. Mayor, C. Moutou, A.~J. Norton, J.~P. Osborne, N. Parley, F. Pont, D. Queloz, R. Ryans, E. Simpson

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Abstract

We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.01256-0285133 every 1.846834 +/- 0.000002 d. Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. We make a preliminary spectroscopic analysis of the host star and find it to have Teff = 6400 +/- 100K and log g = 4.25 +/- 0.05 which suggests it is most likely an unevolved main-sequence star of spectral type F7-8V. Our simultaneous modelling of the transit photometry and reflex motion of the host leads us to derive a mass of 1.76+0.08-0.14 MJ and radius 1.31+0.07-0.14 RJ for WASP-3b. The proximity and relative temperature of the host star suggests that WASP-3b is one of the hottest exoplanets known, and thus has the potential to place stringent constraints on exoplanet atmospheric models.

Original language	English
Pages (from-to)	1576-1584
Number of pages	9
Journal	Monthly Notices of the Royal Astronomical Society
Volume	385
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-2966.2008.12939.x
Publication status	Published - 11 Apr 2008

ASJC Scopus subject areas

Space and Planetary Science

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10.1111/j.1365-2966.2008.12939.x

WASP-3b: a strongly irradiated transiting gas-giant planet
© The Authors This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2008. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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Pollacco, D., Skillen, I., Collier Cameron, A., Loeillet, B., Stempels, H. C., Bouchy, F., Gibson, N. P., Hebb, L., Hébrard, G., Joshi, Y. C., McDonald, I., Smalley, B., Smith, A. M. S., Street, R. A., Udry, S., West, R. G., Wilson, D. M., Wheatley, P. J., Aigrain, S., ... Simpson, E. (2008). WASP-3b: a strongly irradiated transiting gas-giant planet. Monthly Notices of the Royal Astronomical Society, 385(3), 1576-1584. https://doi.org/10.1111/j.1365-2966.2008.12939.x

@article{bd81feefbc7840498d443febb03c5cf9,

title = "WASP-3b: a strongly irradiated transiting gas-giant planet",

abstract = "We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.01256-0285133 every 1.846834 +/- 0.000002 d. Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. We make a preliminary spectroscopic analysis of the host star and find it to have Teff = 6400 +/- 100K and log g = 4.25 +/- 0.05 which suggests it is most likely an unevolved main-sequence star of spectral type F7-8V. Our simultaneous modelling of the transit photometry and reflex motion of the host leads us to derive a mass of 1.76+0.08-0.14 MJ and radius 1.31+0.07-0.14 RJ for WASP-3b. The proximity and relative temperature of the host star suggests that WASP-3b is one of the hottest exoplanets known, and thus has the potential to place stringent constraints on exoplanet atmospheric models.",

author = "D. Pollacco and I. Skillen and \{Collier Cameron\}, A. and B. Loeillet and H.\textasciitilde{}C. Stempels and F. Bouchy and N.\textasciitilde{}P. Gibson and L. Hebb and G. H{\'e}brard and Y.\textasciitilde{}C. Joshi and I. McDonald and B. Smalley and A.\textasciitilde{}M.\textasciitilde{}S. Smith and R.\textasciitilde{}A. Street and S. Udry and R.\textasciitilde{}G. West and D.\textasciitilde{}M. Wilson and P.\textasciitilde{}J. Wheatley and S. Aigrain and K. Alsubai and C.\textasciitilde{}R. Benn and V.\textasciitilde{}A. Bruce and D.\textasciitilde{}J. Christian and W.\textasciitilde{}I. Clarkson and B. Enoch and A. Evans and A. Fitzsimmons and C.\textasciitilde{}A. Haswell and C. Hellier and S. Hickey and S.\textasciitilde{}T. Hodgkin and K. Horne and M. Hrudkov{\'a} and J. Irwin and S.\textasciitilde{}R. Kane and F.\textasciitilde{}P. Keenan and T.\textasciitilde{}A. Lister and P. Maxted and M. Mayor and C. Moutou and A.\textasciitilde{}J. Norton and J.\textasciitilde{}P. Osborne and N. Parley and F. Pont and D. Queloz and R. Ryans and E. Simpson",

year = "2008",

month = apr,

day = "11",

doi = "10.1111/j.1365-2966.2008.12939.x",

language = "English",

volume = "385",

pages = "1576--1584",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

Pollacco, D, Skillen, I, Collier Cameron, A, Loeillet, B, Stempels, HC, Bouchy, F, Gibson, NP, Hebb, L, Hébrard, G, Joshi, YC, McDonald, I, Smalley, B, Smith, AMS, Street, RA, Udry, S, West, RG, Wilson, DM, Wheatley, PJ, Aigrain, S, Alsubai, K, Benn, CR, Bruce, VA, Christian, DJ, Clarkson, WI, Enoch, B, Evans, A, Fitzsimmons, A, Haswell, CA, Hellier, C, Hickey, S, Hodgkin, ST, Horne, K, Hrudková, M, Irwin, J, Kane, SR, Keenan, FP, Lister, TA, Maxted, P, Mayor, M, Moutou, C, Norton, AJ, Osborne, JP, Parley, N, Pont, F, Queloz, D, Ryans, R & Simpson, E 2008, 'WASP-3b: a strongly irradiated transiting gas-giant planet', Monthly Notices of the Royal Astronomical Society, vol. 385, no. 3, pp. 1576-1584. https://doi.org/10.1111/j.1365-2966.2008.12939.x

TY - JOUR

T1 - WASP-3b: a strongly irradiated transiting gas-giant planet

AU - Pollacco, D.

AU - Skillen, I.

AU - Collier Cameron, A.

AU - Loeillet, B.

AU - Stempels, H.~C.

AU - Bouchy, F.

AU - Gibson, N.~P.

AU - Hebb, L.

AU - Hébrard, G.

AU - Joshi, Y.~C.

AU - McDonald, I.

AU - Smalley, B.

AU - Smith, A.~M.~S.

AU - Street, R.~A.

AU - Udry, S.

AU - West, R.~G.

AU - Wilson, D.~M.

AU - Wheatley, P.~J.

AU - Aigrain, S.

AU - Alsubai, K.

AU - Benn, C.~R.

AU - Bruce, V.~A.

AU - Christian, D.~J.

AU - Clarkson, W.~I.

AU - Enoch, B.

AU - Evans, A.

AU - Fitzsimmons, A.

AU - Haswell, C.~A.

AU - Hellier, C.

AU - Hickey, S.

AU - Hodgkin, S.~T.

AU - Horne, K.

AU - Hrudková, M.

AU - Irwin, J.

AU - Kane, S.~R.

AU - Keenan, F.~P.

AU - Lister, T.~A.

AU - Maxted, P.

AU - Mayor, M.

AU - Moutou, C.

AU - Norton, A.~J.

AU - Osborne, J.~P.

AU - Parley, N.

AU - Pont, F.

AU - Queloz, D.

AU - Ryans, R.

AU - Simpson, E.

PY - 2008/4/11

Y1 - 2008/4/11

N2 - We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.01256-0285133 every 1.846834 +/- 0.000002 d. Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. We make a preliminary spectroscopic analysis of the host star and find it to have Teff = 6400 +/- 100K and log g = 4.25 +/- 0.05 which suggests it is most likely an unevolved main-sequence star of spectral type F7-8V. Our simultaneous modelling of the transit photometry and reflex motion of the host leads us to derive a mass of 1.76+0.08-0.14 MJ and radius 1.31+0.07-0.14 RJ for WASP-3b. The proximity and relative temperature of the host star suggests that WASP-3b is one of the hottest exoplanets known, and thus has the potential to place stringent constraints on exoplanet atmospheric models.

AB - We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.01256-0285133 every 1.846834 +/- 0.000002 d. Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. We make a preliminary spectroscopic analysis of the host star and find it to have Teff = 6400 +/- 100K and log g = 4.25 +/- 0.05 which suggests it is most likely an unevolved main-sequence star of spectral type F7-8V. Our simultaneous modelling of the transit photometry and reflex motion of the host leads us to derive a mass of 1.76+0.08-0.14 MJ and radius 1.31+0.07-0.14 RJ for WASP-3b. The proximity and relative temperature of the host star suggests that WASP-3b is one of the hottest exoplanets known, and thus has the potential to place stringent constraints on exoplanet atmospheric models.

U2 - 10.1111/j.1365-2966.2008.12939.x

DO - 10.1111/j.1365-2966.2008.12939.x

M3 - Article

SN - 0035-8711

VL - 385

SP - 1576

EP - 1584

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

WASP-3b: a strongly irradiated transiting gas-giant planet

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