The possible nature of socket stars in H II regions

Details The possible nature of socket stars in H II regions The possible nature of socket stars in H II regions

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...348l..29c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 348, Jan. 1, 1990, p. L29-L32. Research supported by NASA.

Astronomy and Astrophysics

Astrophysics

6

H Ii Regions, Infrared Stars, Stellar Envelopes, Line Of Sight, Stellar Models, Thermodynamic Equilibrium

Scientific paper

Close inspection of faint stars (V of about 14 mag) in H II regions show that they appear to be surrounded by circumstellar envelopes of about 10 arcsecs in diameter (as reported by Feibelman in 1989). The present premise is that the sockets are envelopes of obscuring dust which should emit a measurable amount of infrared radiation based on a simple thermal equilibrium model. A search of literature shows that, of 36 socket stars listed by Feibelman, 17 have been measured in the infrared. Of the 17, 14 show excess IR emission. This is very strong evidence that the socket stars are really stars with circumstellar envelopes. Socket stars may be a new type of astronomical object or well-known astronomical objects in environments or evolutionary states not previously seen.

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