A new search for H I in the Southern Coalsack

Details A new search for H I in the Southern Coalsack A new search for H I in the Southern Coalsack

Apr 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974aujph..27..285k&link_type=abstract

Australian Journal of Physics, vol. 27, Apr. 1974, p. 285-287.

Physics

1

Cosmic Dust, Hydrogen Atoms, Neutral Particles, Self Absorption, Formaldehyde, High Resolution, Molecular Gases, Radial Velocity

Scientific paper

Since neutral hydrogen in dust clouds can often be detected from narrow self-absorption dips, two 21 cm profiles with a velocity resolution of 0.2 km per sec have been obtained in the direction of the Southern Coalsack, in the hope of finding such a self-absorption dip. No neutral hydrogen could be detected. It is likely that most of the hydrogen in the Coalsack is molecular.

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