WASP-24 B: A new transiting close-in hot jupiter orbiting a late F-star

R. A. Street, E. Simpson, S. C C Barros, D. Pollacco, Y. Joshi, I. Todd, A. Collier Cameron, B. Enoch, N. Parley, E. Stempels, L. Hebb, A. H M J Triaud, D. Queloz, D. Segransan, F. Pepe, S. Udry, T. A. Lister, É Depagne, R. G. West, A. J. NortonB. Smalley, C. Hellier, D. R. Anderson, P. F L Maxted, S. J. Bentley, I. Skillen, M. Gillon, P. Wheatley, J. Bento, P. Cathaway-Kjontvedt, D. J. Christian

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We report the discovery of a new transiting close-in giant planet, WASP-24 b, in a 2.341 day orbit, 0.037 AU from its F8-9 type host star. By matching the star's spectrum with theoretical models, we infer an effective temperature T eff = 6075 ± 100 K and a surface gravity of log g = 4.15 ±0.10. A comparison of these parameters with theoretical isochrones and evolutionary mass tracks places only weak constraints on the age of the host star, which we estimate to be 3.8 +1.3 -1.2 Gyr. The planetary nature of the companion was confirmed by radial velocity measurements and additional photometric observations. These data were fit simultaneously in order to determine the most probable parameter set for the system, from which we infer a planetary mass of 1.071 0.036 -0.038 M Jup and radius 1.3 +0.039 -0.037 R Jup.

Original languageEnglish
Pages (from-to)337-343
Number of pages7
JournalAstrophysical Journal
Volume720
Issue number1
DOIs
Publication statusPublished - 1 Sep 2010
Externally publishedYes

Fingerprint

late stars
F stars
Jupiter (planet)
Jupiter
stars
planetary mass
planet
gravity
velocity measurement
radial velocity
planets
gravitation
orbits
radii
temperature
estimates
parameter
comparison

Keywords

  • Planetary systems

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Street, R. A., Simpson, E., Barros, S. C. C., Pollacco, D., Joshi, Y., Todd, I., ... Christian, D. J. (2010). WASP-24 B: A new transiting close-in hot jupiter orbiting a late F-star. Astrophysical Journal, 720(1), 337-343. https://doi.org/10.1088/0004-637X/720/1/337

WASP-24 B : A new transiting close-in hot jupiter orbiting a late F-star. / Street, R. A.; Simpson, E.; Barros, S. C C; Pollacco, D.; Joshi, Y.; Todd, I.; Cameron, A. Collier; Enoch, B.; Parley, N.; Stempels, E.; Hebb, L.; Triaud, A. H M J; Queloz, D.; Segransan, D.; Pepe, F.; Udry, S.; Lister, T. A.; Depagne, É; West, R. G.; Norton, A. J.; Smalley, B.; Hellier, C.; Anderson, D. R.; Maxted, P. F L; Bentley, S. J.; Skillen, I.; Gillon, M.; Wheatley, P.; Bento, J.; Cathaway-Kjontvedt, P.; Christian, D. J.

In: Astrophysical Journal, Vol. 720, No. 1, 01.09.2010, p. 337-343.

Research output: Contribution to journalArticle

Street, RA, Simpson, E, Barros, SCC, Pollacco, D, Joshi, Y, Todd, I, Cameron, AC, Enoch, B, Parley, N, Stempels, E, Hebb, L, Triaud, AHMJ, Queloz, D, Segransan, D, Pepe, F, Udry, S, Lister, TA, Depagne, É, West, RG, Norton, AJ, Smalley, B, Hellier, C, Anderson, DR, Maxted, PFL, Bentley, SJ, Skillen, I, Gillon, M, Wheatley, P, Bento, J, Cathaway-Kjontvedt, P & Christian, DJ 2010, 'WASP-24 B: A new transiting close-in hot jupiter orbiting a late F-star', Astrophysical Journal, vol. 720, no. 1, pp. 337-343. https://doi.org/10.1088/0004-637X/720/1/337
Street RA, Simpson E, Barros SCC, Pollacco D, Joshi Y, Todd I et al. WASP-24 B: A new transiting close-in hot jupiter orbiting a late F-star. Astrophysical Journal. 2010 Sep 1;720(1):337-343. https://doi.org/10.1088/0004-637X/720/1/337
Street, R. A. ; Simpson, E. ; Barros, S. C C ; Pollacco, D. ; Joshi, Y. ; Todd, I. ; Cameron, A. Collier ; Enoch, B. ; Parley, N. ; Stempels, E. ; Hebb, L. ; Triaud, A. H M J ; Queloz, D. ; Segransan, D. ; Pepe, F. ; Udry, S. ; Lister, T. A. ; Depagne, É ; West, R. G. ; Norton, A. J. ; Smalley, B. ; Hellier, C. ; Anderson, D. R. ; Maxted, P. F L ; Bentley, S. J. ; Skillen, I. ; Gillon, M. ; Wheatley, P. ; Bento, J. ; Cathaway-Kjontvedt, P. ; Christian, D. J. / WASP-24 B : A new transiting close-in hot jupiter orbiting a late F-star. In: Astrophysical Journal. 2010 ; Vol. 720, No. 1. pp. 337-343.
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