Dusty Cometary Globules in W5

We report the discovery of four dusty cometary tails around low-mass stars in two young clusters belonging to the W5 star-forming region. Fits to the observed emission profiles from 24 [mu]m observations with the Spitzer Space Telescope give tail lifetimes < 30 Myr, but more likely [image] 5 Myr....

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Bibliographic Details
Published in:The Astrophysical journal 2008-11, Vol.687 (1), p.L37-L40, Article L37
Main Authors: Koenig, X. P, Allen, L. E, Kenyon, S. J, Su, K. Y. L, Balog, Z
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
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Summary:We report the discovery of four dusty cometary tails around low-mass stars in two young clusters belonging to the W5 star-forming region. Fits to the observed emission profiles from 24 [mu]m observations with the Spitzer Space Telescope give tail lifetimes < 30 Myr, but more likely [image] 5 Myr. This result suggests that the cometary phase is a short lived phenomenon, occurring after photoevaporation by a nearby O star has removed gas from the outer disk of a young low-mass star.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1086/593058