Title

3.8-mu m photometry during the secondary eclipse of the extrasolar planet HD 209458b

Authors

Authors

D. Deming; L. J. Richardson;J. Harrington

Comments

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Abbreviated Journal Title

Mon. Not. Roy. Astron. Soc.

Keywords

techniques : photometric; eclipses; stars : individual : HD 209458; planetary systems; infrared : general; INFRARED ARRAY CAMERA; HOT JUPITERS; THERMAL EMISSION; SPACE-TELESCOPE; HD-209458; SPECTRA; Astronomy & Astrophysics

Abstract

We report infrared photometry of the extrasolar planet HD 209458b during the time of secondary eclipse (planet passing behind the star). Observations were acquired during two secondary eclipses at the NASA Infrared Telescope Facility (IRTF) in 2003 September. We used a circular variable filter (1.5 per cent bandpass) centred at 3.8 mu m to isolate the predicted flux peak of the planet at this wavelength. Residual telluric absorption and instrument variations were removed by offsetting the telescope to nearby bright comparison stars at a high temporal cadence. Our results give a secondary eclipse depth of 0.0013 +/- 0.0011, not yet sufficient precision to detect the eclipse, whose expected depth is similar to 0.002 -0.003. We here elucidate the current observational limitations to this technique, and discuss the approach needed to achieve detections of hot Jupiter secondary eclipses at 3.8 mu m from the ground.

Journal Title

Monthly Notices of the Royal Astronomical Society

Volume

378

Issue/Number

1

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

148

Last Page

152

WOS Identifier

WOS:000247175500027

ISSN

0035-8711

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