The Age-Dependence of the Detectabiity of Comets Orbiting Solar-Type Stars

Details The Age-Dependence of the Detectabiity of Comets Orbiting Solar-Type Stars The Age-Dependence of the Detectabiity of Comets Orbiting Solar-Type Stars

2004-10-28

arxiv.org/abs/astro-ph/0410679v1

Astrophys.J. 620 (2005) 487-491

Astronomy and Astrophysics

Astrophysics

6 pages, 1 figure, accepted by ApJ

Scientific paper

10.1086/426902

The outflows from comets in orbit around G-type main-sequence stars can be detected when they produce transient OH absorption lines in the spectrum near 3100 Angstroms of the host star. There is only about a 3 X 10^{-8} probability of detecting an analog to comet Hale-Bopp orbiting an analog to the Sun. However, for young solar-type stars with very large numbers of comets, possibly delivering water to terrestrial planets, there is as much as a 1% chance that any sufficiently sensitive, randomly-timed observation may detect such transient absorption.

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