Giant cold H I cloud complexes near the H II region W5

Details Giant cold H I cloud complexes near the H II region W5 Giant cold H I cloud complexes near the H II region W5

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99.1897s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, June 1990, p. 1897-1903.

Astronomy and Astrophysics

Astronomy

6

H I Regions, H Ii Regions, Molecular Clouds, Absorption Spectra, Carbon Monoxide, Star Formation

Scientific paper

Two giant complexes of cold H I clouds well over 120 pc in length have been detected around the H II region W5 from analyses of the H I absorption features in the data from the Maryland-Green Bank Survey (Westerhout, 1973). Many cold H I fragments exhibit clear velocity gradients, suggesting their rotation. Most of the CO clouds detected in this region are located in the cold H I clouds. The estimated Jeans mass indicates that, without rotation, all the cold H I fragments will eventually contract to dense clouds. The giant H I complex bordering W5 on the southeast shows a velocity gradient along its major axis and shares the velocity with W5 at its western end, suggesting that W5 takes part in the rotation of the H I complex around its minor axis. These facts, together with the published observational results at various wavelengths, suggest that the giant cold H I complex is a future site of sequential star formation.

Affiliated with

Also associated with

No associations

Rating

Giant cold H I cloud complexes near the H II region W5 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Giant cold H I cloud complexes near the H II region W5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Giant cold H I cloud complexes near the H II region W5 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-981605