Nymeyer, Sarah, Harrington, J. (Joseph), Hardy, Ryan A., Stevenson, Kevin B., Campo, Christopher J., Madhusudhan, Nikku, Collier-Cameron, Andrew, Loredo, Thomas J., Blecic, Jasmina, Bowman, William C., Britt, Christopher B. T., Cubillos, Patricio, Hellier, Coel, Gillon, Michael, Maxted, P. F. L., Hebb, L., Wheatley, Peter J., Pollacco, Don and Anderson, D. R.. (2011) Spitzer secondary eclipses of WASP-18b. Astrophysical Journal, Vol.742 (No.1). Article: 35. ISSN 0004-637X

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Abstract

The transiting exoplanet WASP-18b was discovered in 2008 by the Wide Angle Search for Planets project. The Spitzer Exoplanet Target of Opportunity Program observed secondary eclipses of WASP-18b using Spitzer's Infrared Array Camera in the 3.6 mu m and 5.8 mu m bands on 2008 December 20, and in the 4.5 mu m and 8.0 mu m bands on 2008 December 24. We report eclipse depths of 0.30% +/- 0.02%, 0.39% +/- 0.02%, 0.37% +/- 0.03%, 0.41% +/- 0.02%, and brightness temperatures of 3100 +/- 90, 3310 +/- 130, 3080 +/- 140, and 3120 +/- 110 K in order of increasing wavelength. WASP-18b is one of the hottest planets yet discovered-as hot as an M-class star. The planet's pressure-temperature profile most likely features a thermal inversion. The observations also require WASP-18b to have near-zero albedo and almost no redistribution of energy from the day side to the night side of the planet.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Planets -- Atmospheres, Satellites -- Atmospheres, Planets -- Spectra, Infrared astronomy, Astronomical spectroscopy
Journal or Publication Title:	Astrophysical Journal
Publisher:	IOP Publishing
ISSN:	0004-637X
Date:	2011
Volume:	Vol.742
Number:	No.1
Page Range:	Article: 35
Identification Number:	10.1088/0004-637X/742/1/35
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	United States. National Aeronautics and Space Administration (NASA)
References:	Arras, P., Burkart, J., Quataert, E., &Weinbert, N. N. 2011, MNRAS, submitted (arXiv:1107.6005) Beaulieu, J.-P., Tinetti, G., Kipping, D. M., et al. 2011, ApJ, 731, 16 Burrows, A., Ibgui, L., & Hubeny, I. 2008, ApJ, 682, 1277 Campo, C. J., Harrington, J., Hardy, R. A., et al. 2011, ApJ, 727, 125 Charbonneau, D., Allen, L. E., Megeath, S. T., et al. 2005, ApJ, 626, 523 Charbonneau, D., Knutson, H. A., Barman, T., et al. 2008, ApJ, 686, 1341 Deming, D., Seager, S., Richardson, L. J., & Harrington, J. 2005, Nature, 434, 740 Fazio, G. G., Hora, J. L., Allen, L. E., et al. 2004, ApJS, 154, 10 Fortney, J. J., Lodders, K., Marley, M. S., & Freedman, R. S. 2008, ApJ, 678, 1419 Freedman, R. S., Marley, M. S., & Lodders, K. 2008, ApJS, 174, 504 Gim´enez, A., & Bastero, M. 1995, Ap&SS, 226, 99 Harrington, J., Luszcz, S. H., Seager, S., Deming, D., & Richardson, L. J. 2007, Nature, 447, 691 Hellier, C., Anderson, D. R., Collier Cameron, A., et al. 2009, Nature, 460, 1098 Hubeny, I., Burrows, A., & Sudarsky, D. 2003, ApJ, 594, 1011 Knutson, H. A., Charbonneau, D., Allen, L. E., Burrows, A., & Megeath, S. T. 2008, ApJ, 673, 526 Knutson, H. A.,Charbonneau, D., Burrows, A., O’Donovan, F.T.,&Mandushev, G. 2009a, ApJ, 691, 866 Knutson, H. A., Charbonneau, D., Cowan, N. B., et al. 2009b, ApJ, 703, 769 Knutson, H. A., Howard, A. W., & Isaacson, H. 2010, ApJ, 720, 1569 Kopal, Z. 1959, Close Binary Systems (The International Astrophysics Series; London: Chapman and Hall) Laughlin,G., Marcy, G.W.,Vogt, S. S., Fischer, D. A.,&Butler, R. P. 2005, ApJ, 629, L121 Liddle, A. R. 2007, MNRAS, 377, L74 Machalek, P., McCullough, P. R., Burke, C. J., et al. 2008, ApJ, 684, 1427 Machalek, P., McCullough, P. R., Burrows, A., et al. 2009, ApJ, 701, 514 Machalek, P., et al. 2011, ApJ, submitted Madhusudhan, N., Harrington, J., Stevenson, K. B., et al. 2011, Nature, 469, 64 Madhusudhan, N., & Seager, S. 2009, ApJ, 707, 24 Madhusudhan, N., & Seager, S. 2010, ApJ, 725, 261 Madhusudhan, N., & Seager, S. 2011, ApJ, 729, 41 Mandel, K., & Agol, E. 2002, ApJ, 580, L171 Mardling, R. A. 2007, MNRAS, 382, 1768 O’Donovan, F. T., Charbonneau, D., Harrington, J., et al. 2010, ApJ, 710, 1551 Pont, F., Zucker, S., & Queloz, D. 2006, MNRAS, 373, 231 Ragozzine, D., & Wolf, A. S. 2009, ApJ, 698, 1778 Seager, S., & Mall´en-Ornelas, G. 2003, ApJ, 585, 1038 Showman, A. P., Fortney, J. J., Lian, Y., et al. 2009, ApJ, 699, 564 Sing, D. K., & L´opez-Morales, M. 2009, A&A, 493, L31 Southworth, J., Hinse, T. C., Dominik, M., et al. 2009, ApJ, 707, 167 Southworth, J., Wheatley, P. J., & Sams, G. 2007, MNRAS, 379, L11 Spiegel, D. S., Silverio, K., & Burrows, A. 2009, ApJ, 699, 1487 Stevenson, K. B., Harrington, J., Nymeyer, S., et al. 2010, Nature, 464, 1161 Triaud, A. H. M. J., Collier Cameron, A., Queloz, D., et al. 2010, A&A, 524, A25 Watson, C. A., & Marsh, T. R. 2010, MNRAS, 408, 601 Wheatley, P. J., Collier Cameron, A., Harrington, J., et al. 2011, ApJ, submitted (arXiv:1004.0836) Winn, J. N., Holman, M. J., Torres, G., et al. 2008, ApJ, 683, 1076 Wright, J. T. 2005, PASP, 117, 657 Zahnle, K., Marley, M. S., & Fortney, J. J. 2009a, ApJ, submitted (arXiv:0911.0728) Zahnle, K., Marley, M. S., Freedman, R. S., Lodders, K., & Fortney, J. J. 2009b, ApJ, 701, L20
URI:	http://wrap.warwick.ac.uk/id/eprint/40316

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