New, compact far-infrared source in the W31 region

Journal Article · Sat Apr 15 04:00:00 EST 1978 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182668· OSTI ID:6779993

Fazio, G G; Lada, C J; Kleinmann, D E; Wright, E L; Ho, P T.P.; Low, F J

In a survey of the W31 region, a compact far-infrared source was detected at the position of the radio continuum source G10.6--0.4. Associated with this infrared source and in close coincidence with its position is an HII region with a compact core and extended halo as well as OH and H/sub 2/O masers. An extended molecular cloud, centered on these sources, has also been detected. The compact source and associated masers may be located at the HII region-molecular cloud interface, in a thin shocked layer of neutral gas driven into the molecular cloud by the expansion of the H II region. The compact H II region is depleted of dust and must be surrounded by a very dense shell of dust and gas (n/sub h/>2 x 10/sup 5/ cm/sup -/3). The source probably represents an early stage of stellar evolution.

• Research Organization: Harvard-Smithsonian Center for Astrophysics
• OSTI ID: 6779993
• Journal Information: Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 221:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMMONIA
AMPLIFIERS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COSMIC DUST
COSMIC GASES
COSMIC RADIO SOURCES
DUSTS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
FLUIDS
GASES
H2 REGIONS
HYDRIDES
HYDROGEN COMPOUNDS
INFRARED RADIATION
INFRARED SPECTRA
INTERSTELLAR SPACE
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SPACE
SPECTRA