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

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

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...351..578s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 351, March 10, 1990, p. 578-582. Research supported by the National Researc

Astronomy and Astrophysics

Astrophysics

12

Formaldehyde, Ophiuchi Clouds, Star Formation, Stellar Cores, Interstellar Matter, Protostars

Scientific paper

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.

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