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. Smalley, A. H M J Triaud, D. M. Wilson, S. J. Bentley, A. Collier Cameron, B. Enoch, K. Horne, J. Irwin, T. A. Lister, M. Mayor, N. Parley, F. Pepe, D. PollaccoD. Segransan, M. Spano, S. Udry, P. J. Wheatley

Research output: Contribution to journalArticle

34 Citations (Scopus)

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 Mp = 0.542 ± 0.050 MJ and radius Rp = 1.428 ± 0.077 RJ, and is therefore one of the least dense transiting exoplanets so far discovered (ρp = 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 Teff = 6300 ± 100 K and [Fe/H] = -0.17 ± 0.11.

Original languageEnglish
Pages (from-to)4834-4836
Number of pages3
JournalAstronomical Journal
Volume137
Issue number6
DOIs
Publication statusPublished - 1 Jun 2009
Externally publishedYes

Fingerprint

extrasolar planets
stars
Southern Hemisphere
orbits
radii
temperature
analysis

Keywords

  • binaries: eclipsing
  • planetary systems
  • stars: individual (WASP-15)
  • techniques: photometric
  • techniques: radial velocities
  • techniques: spectroscopic

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

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(6), 4834-4836. 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.; Smalley, B.; Triaud, A. H M J; Wilson, D. M.; Bentley, S. J.; Collier Cameron, A.; Enoch, B.; Horne, K.; Irwin, J.; Lister, T. A.; Mayor, M.; Parley, N.; Pepe, F.; Pollacco, D.; Segransan, D.; Spano, M.; Udry, S.; Wheatley, P. J.

In: Astronomical Journal, Vol. 137, No. 6, 01.06.2009, p. 4834-4836.

Research output: Contribution to journalArticle

West, RG, Anderson, DR, Gillon, M, Hebb, L, Hellier, C, Maxted, PFL, Queloz, D, Smalley, B, Triaud, AHMJ, Wilson, DM, Bentley, SJ, 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, no. 6, pp. 4834-4836. https://doi.org/10.1088/0004-6256/137/6/4834
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 1;137(6):4834-4836. 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. ; Smalley, B. ; Triaud, A. H M J ; Wilson, D. M. ; Bentley, S. J. ; Collier Cameron, A. ; Enoch, B. ; Horne, K. ; Irwin, J. ; Lister, T. A. ; Mayor, M. ; Parley, N. ; Pepe, F. ; Pollacco, D. ; Segransan, D. ; Spano, M. ; Udry, S. ; Wheatley, P. J. / The low density transiting exoplanet WASP-15b. In: Astronomical Journal. 2009 ; Vol. 137, No. 6. pp. 4834-4836.
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AU - Hebb, L.

AU - Hellier, C.

AU - Maxted, P. F L

AU - Queloz, D.

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AU - Enoch, B.

AU - Horne, K.

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AU - Lister, T. A.

AU - Mayor, M.

AU - Parley, N.

AU - Pepe, F.

AU - Pollacco, D.

AU - Segransan, D.

AU - Spano, M.

AU - Udry, S.

AU - Wheatley, P. J.

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