Formaldehyde mapping of Rho Ophiuchi B1 - The densest cold prestellar core

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168495· OSTI ID:7135423

Sasselov, D D; Rucinski, S M ^[1]

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1. Toronto Univ. (Canada)

The structure of the cold core B1 of the Rho Oph molecular cloud is studied. The high (3-2) transitions of ortho- and para-H2CO were observed. A map of the core was obtained in the ortho-H2CO line, supplemented by para-H2CO observations along the ridge of the core. The para-to-ortho line ratio is used to infer a higher limit to the density of Rho Oph B1 than previous estimates. The structure inside B1 and its high density suggest that this may be a massive binary (or multiple) system in a very early stage of formation. 15 refs.

• OSTI ID: 7135423
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 351; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALDEHYDES
BINARY STARS
COSMIC GASES
DENSITY
FLUIDS
FORMALDEHYDE
GASES
INTERSTELLAR SPACE
MORPHOLOGY
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PROTOSTARS
SPACE
STAR EVOLUTION
STARS