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. Hebrard; 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. Hrudkova; 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. Hebrard, 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. AlsubaiC. 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. Hrudkova, 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

School of Physics and Astronomy

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

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-B1.0 1256-0285133 every 1.846 834 +/- 0.000 002 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 T-eff = 6400 +/- 100 K 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(-0.14)(+0.08) M-J and radius 1.31(-0.14)(+0.07) R-J 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
Early online date	10 Mar 2008
DOIs	https://doi.org/10.1111/j.1365-2966.2008.12939.x
Publication status	Published - 11 Apr 2008

Keywords

methods : data analysis
techniques : photometric
techniques : radial velocities
planetary systems
SUN-LIKE STAR
EXTRASOLAR PLANETS
SURFACE GRAVITIES
FALSE POSITIVES
LIGHT CURVES
SUPERWASP
CANDIDATES
STELLAR
PHOTOMETRY
EVOLUTION

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10.1111/j.1365-2966.2008.12939.x

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Pollacco, D., Skillen, I., Cameron, A. C., Loeillet, B., Stempels, H. C., Bouchy, F., Gibson, N. P., Hebb, L., Hebrard, 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{8a4ca648b629436e93601b9b0d7d1303,

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-B1.0 1256-0285133 every 1.846 834 +/- 0.000 002 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 T-eff = 6400 +/- 100 K 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(-0.14)(+0.08) M-J and radius 1.31(-0.14)(+0.07) R-J 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.",

keywords = "methods : data analysis, techniques : photometric, techniques : radial velocities, planetary systems, SUN-LIKE STAR, EXTRASOLAR PLANETS, SURFACE GRAVITIES, FALSE POSITIVES, LIGHT CURVES, SUPERWASP, CANDIDATES, STELLAR, PHOTOMETRY, EVOLUTION",

author = "D. Pollacco and I. Skillen and Cameron, {A. Collier} and B. Loeillet and Stempels, {H. C.} and F. Bouchy and Gibson, {N. P.} and L. Hebb and G. Hebrard and Joshi, {Y. C.} and I. McDonald and B. Smalley and Smith, {A. M. S.} and Street, {R. A.} and S. Udry and West, {R. G.} and Wilson, {D. M.} and Wheatley, {P. J.} and S. Aigrain and K. Alsubai and Benn, {C. R.} and Bruce, {V. A.} and Christian, {D. J.} and Clarkson, {W. I.} and B. Enoch and A. Evans and A. Fitzsimmons and Haswell, {C. A.} and C. Hellier and S. Hickey and Hodgkin, {S. T.} and K. Horne and M. Hrudkova and J. Irwin and Kane, {S. R.} and Keenan, {F. P.} and Lister, {T. A.} and P. Maxted and M. Mayor and C. Moutou and Norton, {A. J.} and Osborne, {J. P.} 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, Cameron, AC, Loeillet, B, Stempels, HC, Bouchy, F, Gibson, NP, Hebb, L, Hebrard, 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, Hrudkova, 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

T2 - a strongly irradiated transiting gas-giant planet

AU - Pollacco, D.

AU - Skillen, I.

AU - Cameron, A. Collier

AU - Loeillet, B.

AU - Stempels, H. C.

AU - Bouchy, F.

AU - Gibson, N. P.

AU - Hebb, L.

AU - Hebrard, 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 - Hrudkova, 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-B1.0 1256-0285133 every 1.846 834 +/- 0.000 002 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 T-eff = 6400 +/- 100 K 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(-0.14)(+0.08) M-J and radius 1.31(-0.14)(+0.07) R-J 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-B1.0 1256-0285133 every 1.846 834 +/- 0.000 002 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 T-eff = 6400 +/- 100 K 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(-0.14)(+0.08) M-J and radius 1.31(-0.14)(+0.07) R-J 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.

KW - methods : data analysis

KW - techniques : photometric

KW - techniques : radial velocities

KW - planetary systems

KW - SUN-LIKE STAR

KW - EXTRASOLAR PLANETS

KW - SURFACE GRAVITIES

KW - FALSE POSITIVES

KW - LIGHT CURVES

KW - SUPERWASP

KW - CANDIDATES

KW - STELLAR

KW - PHOTOMETRY

KW - EVOLUTION

UR - http://www.scopus.com/inward/record.url?scp=41649102276&partnerID=8YFLogxK

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

Abstract

Keywords

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

Abstract

Keywords

Access to Document

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Projects

Wide Area Search for Planets: Project support for the Wide Area Search for Planets

Astrophysics at St Andrews: Astrophysics at St.Andrews

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