. (2009) The sub-Jupiter mass transiting exoplanet WASP-11b. Astronomy & Astrophysics, Vol.50 (No.1). pp. 395-400. ISSN 0004-6361

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Abstract

We report the discovery of a sub-Jupiter mass exoplanet transiting a magnitude V = 11.6 host star 1SWASP J030928.54+304024.7. A simultaneous fit to the transit photometry and radial-velocity measurements yield a planet mass $M_{\rm p}$ = 0.53 $\pm$ 0.07 ${M_{\rm J}}$, radius $R_{\rm p} = 0.91^_~{R_{\rm J}}$ and an orbital period of $3.722465^{\rm +0.000006}_$ days. The host star is an early to mid-K dwarf, with a spectral analysis yielding an effective temperature of 4800 $\pm$ 100 K and log g = 4.45 $\pm$ 0.2. It is amongst the smallest, least massive and lowest luminosity stars known to harbour a transiting exoplanet. WASP-11b is the third least strongly irradiated transiting exoplanet discovered to date, experiencing an incident flux $F_{\rm p}$ = 1.9$\times$108  erg s-1 cm-2 and having an equilibrium temperature $T_{\rm eql}$ = 960 $\pm$ 70 K.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Stars -- Motion in line of sight, Astronomical photometry, Astronomical spectroscopy, Planets -- Spectra, Planets -- Orbits
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Date:	July 2009
Volume:	Vol.50
Number:	No.1
Page Range:	pp. 395-400
Identification Number:	10.1051/0004-6361/200810973
Status:	Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Sixth Framework Programme (European Commission) (FP6), Optical Infrared Coordination network (OPTICON), Science and Technology Facilities Council (Great Britain) (STFC)
References:	Bakos, G., Noyes, R. W., Kovács, G., et al. 2004, PASP, 116, 266 Baraffe, I., Chabrier, G., Allard, F., & Hauschildt, P. H. 1998, A&A, 337, 403 Barnes, S. A. 2007, ApJ, 669, 1167 Bouchy, F., & The Sophie Team. 2006, in Tenth Anniversary of 51 Peg-b: Status of and prospects for hot Jupiter studies, ed. L. Arnold, F. Bouchy, & C. Moutou, 319 Burrows, A., Hubeny, I., Budaj, J., Knutson, H. A., & Charbonneau, D. 2007, ApJ, 668, L171 Charbonneau, D., Brown, T. M., Latham, D. W., & Mayor, M. 2000, ApJ, 529, L45 Charbonneau, D., Knutson, H. A., Barman, T., et al. 2008, ArXiv e-prints, 802 Claret, A. 2000, A&A, 363, 1081 Collier Cameron, A., Pollacco, D., Street, R. A., et al. 2006, MNRAS, 373, 799 Collier Cameron, A., Wilson, D. M., West, R. G., et al. 2007, MNRAS, 380, 1230 Fortney, J. J., Saumon, D., Marley, M. S., Lodders, K., & Freedman, R. S. 2006, ApJ, 642, 495 Fortney, J. J., Marley, M. S., & Barnes, J. W. 2007, ApJ, 659, 1661 Girardi, L., Bressan, A., Bertelli, G., & Chiosi, C. 2000, A&AS, 141, 371 Henry, G. W., Marcy, G. W., Butler, R. P., & Vogt, S. S. 2000, ApJ, 529, L41 Machalek, P., McCullough, P. R., Burke, C. J., et al. 2008, ArXiv e-prints, 805 McCullough, P. R., Stys, J. E., Valenti, J. A., et al. 2005, PASP, 117, 783 O’Donovan, F. T., Charbonneau, D., Mandushev, G., et al. 2006, ApJ, 651, L61 Pollacco, D. L., Skillen, I., Cameron, A. C., et al. 2006, PASP, 118, 1407 Pollacco, D., Skillen, I., Collier Cameron, A., et al. 2008, MNRAS, 385, 1576 Queloz, D., Henry, G. W., Sivan, J. P., et al. 2001, A&A, 379, 279 Sestito, P., & Randich, S. 2005, A&A, 442, 615 Stempels, H. C., Collier Cameron, A., Hebb, L., Smalley, B., & Frandsen, S. 2007, MNRAS, 379, 773 Udalski, A., Paczynski, B., Zebrun, K., et al. 2002, Acta Astron., 52, 1
URI:	http://wrap.warwick.ac.uk/id/eprint/2325

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