Spitzer Observations of the Debris Disk Star ɛ Eridani

Details Spitzer Observations of the Debris Disk Star ɛ Eridani Spitzer Observations of the Debris Disk Star ɛ Eridani

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..357..105m&link_type=abstract

The Spitzer Space Telescope: New Views of the Cosmos ASP Conference Series, Volume 357, proceedings of the conference held 9-12

Astronomy and Astrophysics

Astronomy

Scientific paper

ɛ Eridani is one of the four debris disk stars discovered by IRAS (together with Vega, Fomalhaut and β Pictoris). The disk has been first resolved in the sub-mm, and shows evidences for clumpy structures possibly associated to low mass companions. Radial velocity data also suggest the presence of a planetary companion orbiting at 3.4 AU. With an age of 730 Myr ɛ Eridani represents a particularly interesting object to study the evolution of debris disks and of the associated exoplanetary companions. As part of the Spitzer ``Fabulous Four'' program, we have observed ɛ Eridani with all Spitzer instruments. In particular, the Multiband Imaging Photometer for Spitzer (MIPS) has been used to image the disk at 24 and 70 μm, in order to study its infrared thermal emission. The InfraRed Array Camera (IRAC) has instead been used to image the star at 3.6, 4.5, 5.8 and 8.0 μm in search for substellar companions. We present here the preliminary results of this analysis.

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