A Search for Substellar Companions of the Debris Disk Star ɛ Eridani with the Spitzer Space Telescope

Details A Search for Substellar Companions of the Debris Disk Star ɛ Eridani with the Spitzer Space Telescope A Search for Substellar Companions of the Debris Disk Star ɛ Eridani with the Spitzer Space Telescope

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1125m&link_type=abstract

American Astronomical Society Meeting 205, #11.25; Bulletin of the American Astronomical Society, Vol. 36, p.1356

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ɛ Eridani is one of the ``Fabulous Four'' debris disk stars discovered by IRAS, along with Vega, Beta Pictoris and Fomalhaut. Observations with the Multiband Imaging Photometer (MIPS) and the InfraRed Spectrograph (IRS) of the Spitzer Space Telescope have confirmed the presence of the disks, and provided evidences for asymmetries in the disk structure that may be induced by the gravitational perturbations of substellar companions.
We will present a search for substellar companions of ɛ Eridani and the other ``Fabulous Four'' stars which is being carried on with the InfraRed Array Camera (IRAC) of the Spitzer Space Telescope. The optical quality and high dynamic range of the camera is specially suited for the search of faint companions around bright stars, and its four bandpasses at 3.6, 4.5, 5.8 and 8.0 μ m are optimized to search for substellar objects by detecting their CO and CH4 spectral features. We will discuss the special techniques of Point Spread Function subtraction we have developed for this project, allowing to detect sources 106 fainter than the central star as close as 30'' from the star, and the preliminary results for this search.
Based on observations from the Spitzer Space Telescope (operated by JPL/Caltech, NASA Contract 1407) with support provided through NASA Contract 960541 from JPL/Caltech.

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