Dust Disks in Binaries: The Case of HEN 3-600

Details Dust Disks in Binaries: The Case of HEN 3-600 Dust Disks in Binaries: The Case of HEN 3-600

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.6809j&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #68.09; Bulletin of the American Astronomical Society, Vol. 31, p.932

Astronomy and Astrophysics

Astronomy

Scientific paper

We present high-resolution mid-infrared observations of the nearby late-type young binary system Hen 3-600. The binary, at a distance of about 50 pc, may be a member of the TW Hydrae Association, the nearest known group of young stars, with an age of 5-10 million years. Our images make it possible for the first time to determine which star in the pair, separated by 1.4", harbors circumstellar dust. In the near-infrared, Hen 3-600A (M3) and Hen 3-600B (M3.5) have a flux ratio consistent with the emission being mainly due to the stellar photospheres. At longer wavelengths -4.8, 10.8 and 18.2 microns-the primary becomes increasingly dominant over the secondary, suggesting that most of the circumstellar dust in the system resides around Hen 3-600A. The distribution of dust in the system may provide clues to binary formation mechanisms as well as to the evolution of protoplanetary disks in close binaries.

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