Fomalhaut b: Direct Detection of a ɛ Jupiter-mass Object Orbiting Fomalhaut

Details Fomalhaut b: Direct Detection of a ɛ Jupiter-mass Object Orbiting Fomalhaut Fomalhaut b: Direct Detection of a ɛ Jupiter-mass Object Orbiting Fomalhaut

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21335102k&link_type=abstract

American Astronomical Society, AAS Meeting #213, #351.02; Bulletin of the American Astronomical Society, Vol. 41, p.491

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Scientific paper

The 100 Myr-old A star Fomalhaut hosts a vast belt of dusty material with a morphology that implies the presence of a shepherding planet (Kalas et al. 2005). Using the Hubble Space Telescope we have detected a common proper motion companion, Fomalhaut b, with properties consistent with the predicted exoplanet (Kalas et al. 2008). We show two epochs of optical data that reveal Keplerian orbital motion. We estimate that the mass of Fomalhaut b is less than three Jupiter masses: a more massive object would disrupt the dust belt and would have been detected in deep H and L' images obtained with the Keck and Gemini Observatories. We will introduce some of the surprising features of the data that suggest contamination from other sources of optical luminosity, such as stellar light reflected from a circumplanetary dust disk.

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