The possible nature of socket stars in H II regions

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185623· OSTI ID:6997603

Castelaz, M W ^[1]

---

1. Allegheny Observatory, Pittsburgh, PA (USA)

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. 22 refs.

• OSTI ID: 6997603
• Journal Information: Astrophysical Journal; (USA), Vol. 348; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
STARS
INFRARED RADIATION
CLASSIFICATION
COSMIC DUST
ENVIRONMENT
H2 REGIONS
INSPECTION
LTE
STAR EVOLUTION
STAR MODELS
COSMIC RADIO SOURCES
DUSTS
ELECTROMAGNETIC RADIATION
EQUILIBRIUM
MATHEMATICAL MODELS
RADIATIONS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources