High resolution H I observations of dark clouds. II - L 1551

Details High resolution H I observations of dark clouds. II - L 1551 High resolution H I observations of dark clouds. II - L 1551

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...216..215v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 216, no. 1-2, June 1989, p. 215-229. Research supported by ASTRON and ZWO.

Astronomy and Astrophysics

Astronomy

22

H I Regions, High Resolution, Interstellar Matter, Molecular Clouds, Radio Astronomy, Centimeter Waves, Herbig-Haro Objects, Interstellar Radiation, Synthetic Apertures, Very Large Array (Vla)

Scientific paper

High-resolution H-I 21-cm line observations of L 1551 have been used to construct maps with an angular resolution of 1.5 arcmin and a velocity resolution of 1.3 km/s. The H I associated with the undisturbed molecular gas is found to have a simple structure which can be explained by heating due to the interstellar radiation field. H-I emission is also noted at velocities that are blueshifted or redshifted with respect to the quiet molecular gas, with a fraction of this emission being associated with the bipolar outflow in L 1551. It is suggested that the blueshifted H-I emission may be due to disruption of the cloud envelope by the bipolar flow.

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