Analysis of the Photometry of Fomalhaut b

Details Analysis of the Photometry of Fomalhaut b Analysis of the Photometry of Fomalhaut b

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21335103g&link_type=abstract

American Astronomical Society, AAS Meeting #213, #351.03; Bulletin of the American Astronomical Society, Vol. 41, p.491

Physics

Optics

Scientific paper

The orbital companion of Fomalhaut, Fomalhaut b, is detected in multi-color, coronagraphic observations acquired with the Hubble Space Telescope using the high-resolution channel of the Advanced Camera for Surveys. Fomalhaut b is detected in F606W and F814W, but not detected in F435W; moreover, there is evidence for photometric variability in F606W. Ground-based Keck/NIRC2 adaptive optics observations in H and in a narrow 1.59-micron methane-band filter place strict limits on the photospheric emission from a warm exoplanet, as does Lp (3.8 micron) imaging with Gemini/NIRI. We compare these results with the predictions of state-of-the-art exoplanet atmosphere models and scattered light models that invoke dust or a circumplanetary disk.

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