The 0.5Mj translting exoplanet WASP-13b

I. Skillen, D. Pollacco, Cameron Collier, L. Hebb, E. Simpson, F. Bouchy, D. J. Christian, N. P. Gibson, G. Hébrard, Y. C. Joshi, B. Loeillet, B. Smalley, H. C. Stempels, R. A. Street, S. Udry, R. G. West, D. R. Anderson, S. C.C. Barros, B. Enoch, C. A. HaswellC. Hellier, K. Home, J. Irwin, F. P. Keenan, T. A. Lister, P. Maxted, M. Mayor, C. Moutou, A. J. Norton, N. Parley, D. Queloz, R. Ryans, I. Todd, P. J. Wheatley, D. M. Wilson

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    27 Citations (Scopus)


    We report the discovery of WASP-13b, a low-mass Mp, = 0.46 -0.06-0.05 Mj transiting exoplanet with an orbital period of 4.35298 ± 0.00004 days. The transit has a depth of 9 mmag, and although our follow-up photometry does not allow us to constrain the impact parameter well (0 < b < 0.46), with radius in the range R j ∼ 1.06-1.21 Rj the location of WASP-13b in the mass-radius plane is nevertheless consistent with H/He-dominated, irradiated, low core mass and core-free theoretical models. The G1V host star is similar to the Sun in mass (M*, = 1.03+0.11-0.09 M·) and metallicity ([M/H] = 0.0 ± 0.2), but is possibly older (8.5,+5.5-4.9 Gyr).

    Original languageEnglish
    Pages (from-to)391-394
    Number of pages4
    JournalAstronomy and Astrophysics
    Issue number1
    Publication statusPublished - 1 Jul 2009



    • Binaries: Eclipsing
    • Planetary systems
    • Stars: Individual
    • Techniques: Photometric
    • Techniques: Radial velocities
    • Techniques: Spectroscopic
    • Wasp,13b

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Skillen, I., Pollacco, D., Collier, C., Hebb, L., Simpson, E., Bouchy, F., Christian, D. J., Gibson, N. P., Hébrard, G., Joshi, Y. C., Loeillet, B., Smalley, B., Stempels, H. C., Street, R. A., Udry, S., West, R. G., Anderson, D. R., Barros, S. C. C., Enoch, B., ... Wilson, D. M. (2009). The 0.5Mj translting exoplanet WASP-13b. Astronomy and Astrophysics, 502(1), 391-394.