21-cm absorption observations towards a cold diffuse cloud

Details 21-cm absorption observations towards a cold diffuse cloud 21-cm absorption observations towards a cold diffuse cloud

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149..209c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 1, Aug. 1985, p. 209-212.

Astronomy and Astrophysics

Astronomy

3

Absorption Spectra, Hydrogen Clouds, Interstellar Gas, Radio Astronomy, Antenna Arrays, Centimeter Waves

Scientific paper

Measurements have been conducted of 21-cm H I absorption profiles towards 5 directions in the vicinity of Verschuur's (1969) cloud A (l approximately 226 deg, b approximately 44 deg). The results confirm the cold spin temperature (about 20 K) of the cloud. The H I column density varies by as much as a factor of 3 over an angular scale of 6 min (corresponding to a scale length of approximately 0.25 pc if the cloud is at a distance of 150 pc).

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