Disks Around Post-Main Sequence Binaries

Details Disks Around Post-Main Sequence Binaries Disks Around Post-Main Sequence Binaries

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ap%26ss.251...81j&link_type=abstract

Astrophysics and Space Science, Volume 251, Issue 1-2, pp. 81-88

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We propose that at least two stars on or near the AGB have long-lived orbiting disks: HD 44179, the central star in the Red Rectangle, and BM Gem, a carbon-rich star with an oxygen-rich circumstellar envelope. The CO emission from both of these disks has a spike with a width near ˜2 km s-1, indicating disk radii of ˜1016 cm. The dust in such disks is therefore quite cold (near T ˜ 50 K for the Red Rectangle) and may emit primarily at submillimeter wavelengths. The disks around stars where there is also substantial mass loss may not be easily observable; there could be many as yet undiscovered disks around AGB stars

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