The Low Density Transiting Exoplanet WASP-15b

R.G. West, D.R. Anderson, M. Gillon, L. Hebb, C. Hellier, P.F.L. Maxted, D. Queloz, B. Smally, A.H.M.G. Triaud, D.H. Wilson, S. Bentley, A. Collier Cameron, B. Enoch, K. Horne, J. Irwin, T.A. Lister, M. Mayor, N. Parley, F. Pepe, Don PollaccoD. Segransan, M. Spano, S. Udry, P.J. Wheatley

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Abstract

We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P = 3.7520656 ± 0.0000028 d, has a mass M p = 0.542 ± 0.050 M J and radius R p = 1.428 ± 0.077 R J, and is therefore one of the least dense transiting exoplanets so far discovered (?p = 0.247 ± 0.035 g cm-3). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T eff = 6300 ± 100 K and [Fe/H] = -0.17 ± 0.11.
Original languageEnglish
Pages (from-to)4834-3836
Number of pages999
JournalAstronomical Journal
Volume137
DOIs
Publication statusPublished - Jun 2009

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extrasolar planets
stars
Southern Hemisphere
orbits
radii
temperature
analysis

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West, R. G., Anderson, D. R., Gillon, M., Hebb, L., Hellier, C., Maxted, P. F. L., ... Wheatley, P. J. (2009). The Low Density Transiting Exoplanet WASP-15b. Astronomical Journal, 137, 4834-3836. https://doi.org/10.1088/0004-6256/137/6/4834
West, R.G. ; Anderson, D.R. ; Gillon, M. ; Hebb, L. ; Hellier, C. ; Maxted, P.F.L. ; Queloz, D. ; Smally, B. ; Triaud, A.H.M.G. ; Wilson, D.H. ; Bentley, S. ; Collier Cameron, A. ; Enoch, B. ; Horne, K. ; Irwin, J. ; Lister, T.A. ; Mayor, M. ; Parley, N. ; Pepe, F. ; Pollacco, Don ; Segransan, D. ; Spano, M. ; Udry, S. ; Wheatley, P.J. / The Low Density Transiting Exoplanet WASP-15b. In: Astronomical Journal. 2009 ; Vol. 137. pp. 4834-3836.
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abstract = "We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P = 3.7520656 ± 0.0000028 d, has a mass M p = 0.542 ± 0.050 M J and radius R p = 1.428 ± 0.077 R J, and is therefore one of the least dense transiting exoplanets so far discovered (?p = 0.247 ± 0.035 g cm-3). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T eff = 6300 ± 100 K and [Fe/H] = -0.17 ± 0.11.",
author = "R.G. West and D.R. Anderson and M. Gillon and L. Hebb and C. Hellier and P.F.L. Maxted and D. Queloz and B. Smally and A.H.M.G. Triaud and D.H. Wilson and S. Bentley and {Collier Cameron}, A. and B. Enoch and K. Horne and J. Irwin and T.A. Lister and M. Mayor and N. Parley and F. Pepe and Don Pollacco and D. Segransan and M. Spano and S. Udry and P.J. Wheatley",
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West, RG, Anderson, DR, Gillon, M, Hebb, L, Hellier, C, Maxted, PFL, Queloz, D, Smally, B, Triaud, AHMG, Wilson, DH, Bentley, S, Collier Cameron, A, Enoch, B, Horne, K, Irwin, J, Lister, TA, Mayor, M, Parley, N, Pepe, F, Pollacco, D, Segransan, D, Spano, M, Udry, S & Wheatley, PJ 2009, 'The Low Density Transiting Exoplanet WASP-15b', Astronomical Journal, vol. 137, pp. 4834-3836. https://doi.org/10.1088/0004-6256/137/6/4834

The Low Density Transiting Exoplanet WASP-15b. / West, R.G.; Anderson, D.R.; Gillon, M.; Hebb, L.; Hellier, C.; Maxted, P.F.L.; Queloz, D.; Smally, B.; Triaud, A.H.M.G.; Wilson, D.H.; Bentley, S.; Collier Cameron, A.; Enoch, B.; Horne, K.; Irwin, J.; Lister, T.A.; Mayor, M.; Parley, N.; Pepe, F.; Pollacco, Don; Segransan, D.; Spano, M.; Udry, S.; Wheatley, P.J.

In: Astronomical Journal, Vol. 137, 06.2009, p. 4834-3836.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The Low Density Transiting Exoplanet WASP-15b

AU - West, R.G.

AU - Anderson, D.R.

AU - Gillon, M.

AU - Hebb, L.

AU - Hellier, C.

AU - Maxted, P.F.L.

AU - Queloz, D.

AU - Smally, B.

AU - Triaud, A.H.M.G.

AU - Wilson, D.H.

AU - Bentley, S.

AU - Collier Cameron, A.

AU - Enoch, B.

AU - Horne, K.

AU - Irwin, J.

AU - Lister, T.A.

AU - Mayor, M.

AU - Parley, N.

AU - Pepe, F.

AU - Pollacco, Don

AU - Segransan, D.

AU - Spano, M.

AU - Udry, S.

AU - Wheatley, P.J.

PY - 2009/6

Y1 - 2009/6

N2 - We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P = 3.7520656 ± 0.0000028 d, has a mass M p = 0.542 ± 0.050 M J and radius R p = 1.428 ± 0.077 R J, and is therefore one of the least dense transiting exoplanets so far discovered (?p = 0.247 ± 0.035 g cm-3). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T eff = 6300 ± 100 K and [Fe/H] = -0.17 ± 0.11.

AB - We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P = 3.7520656 ± 0.0000028 d, has a mass M p = 0.542 ± 0.050 M J and radius R p = 1.428 ± 0.077 R J, and is therefore one of the least dense transiting exoplanets so far discovered (?p = 0.247 ± 0.035 g cm-3). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T eff = 6300 ± 100 K and [Fe/H] = -0.17 ± 0.11.

U2 - 10.1088/0004-6256/137/6/4834

DO - 10.1088/0004-6256/137/6/4834

M3 - Article

VL - 137

SP - 4834

EP - 3836

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

ER -

West RG, Anderson DR, Gillon M, Hebb L, Hellier C, Maxted PFL et al. The Low Density Transiting Exoplanet WASP-15b. Astronomical Journal. 2009 Jun;137:4834-3836. https://doi.org/10.1088/0004-6256/137/6/4834