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Title:
The Phase-Dependent Infrared Brightness of the Extrasolar Planet upsilo Andromedae b
Authors:
Harrington, Joseph; Hansen, Brad M.; Luszcz, Statia H.; Seager, Sara; Deming, Drake; Menou, Kristen; Cho, James Y.-K.; Richardson, L. Jeremy
Affiliation:
AA(Department of Physics, University of Central Florida, Orlando, FL 32816, USA; Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853, USA), AB(Department of Physics and Astronomy and Institute of Geophysics and Planetary Physics, University of California at Los Angeles, Los Angeles, CA 90095, USA), AC(Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853, USA; Department of Astronomy, University of California, Berkeley, CA 94720, USA), AD(Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA), AE(Planetary Systems Laboratory and Goddard Center for Astrobiology, Goddard Space Flight Center, Greenbelt, MD 20771, USA), AF(Department of Astronomy, Columbia University, New York, NY 10027, USA), AG(Astronomy Unit, School of Mathematical Sciences, Queen Mary, University of London, London E1 4NS, UK.), AH(Exoplanets and Stellar Astrophysics Laboratory, Goddard Space Flight Center, Greenbelt, MD 20771, USA)
Publication:
Science, Volume 314, Issue 5799, pp. 623-626 (2006). (Sci Homepage)
Publication Date:
10/2006
Category:
ASTRONOMY
Origin:
SCIENCE
DOI:
10.1126/science.1133904
Bibliographic Code:
2006Sci...314..623H

Abstract

The star upsilo Andromedae is orbited by three known planets, the innermost of which has an orbital period of 4.617 days and a mass at least 0.69 that of Jupiter. This planet is close enough to its host star that the radiation it absorbs overwhelms its internal heat losses. Here, we present the 24-micrometer light curve of this system, obtained with the Spitzer Space Telescope. It shows a variation in phase with the orbital motion of the innermost planet, demonstrating that such planets possess distinct hot substellar (day) and cold antistellar (night) faces.
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