The densest prestellar condensations: H2CO Studies ofρ Oph B1

Details The densest prestellar condensations: H2CO Studies ofρ Oph B1 The densest prestellar condensations: H2CO Studies ofρ Oph B1

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224...51b&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 51-54

Astronomy and Astrophysics

Astrophysics

1

Star Formation, Pre-Stellar Cores, Formaldehyde

Scientific paper

Theρ Oph B1 cloud core region is unique in that it exhibits 2-cm H2CO line emission over a substantial area (indicating gas densities ≥ 106 cm-3), while lacking any known embedded infrared sources. Subsequent H2CO studies at the VLA and the JCMT have not provided a consistent model of the gas structure and kinematics. Here, we present the first high-velocity resolution maps in the 218 GHz and 352 GHz transitions of H2CO. Our multi-transition study, at velocity and spatial resolutions comparable to existing VLA data, has proven crucial to forming a coherent picture of the gas kinematics.

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