The kinematics of the local gas system
Abstract
Some features of the 21cm velocity measurements of hydrogen gas for b > 20 are analyxed. An argu ment is presented for consideration of an expression for the residual velocitydistance relation of the form R.V. (km/sec) = 1.24 cool' cosb't2.62 sin" coob' 1.60 sinb' Sr( 1  [1.1 tsin2 (1't53 )J cos2b't0.25 sin `48 ) sin2b'}, where is the distance and S is an unknown (positive) scale factor. Crude arguments suggest km sec ' kpc '. Some implications of these numerical values and of the assumption that the local gas system is associated with the stellar Gould's belt system are briefly discussed.
 Publication:

The Astronomical Journal
 Pub Date:
 May 1961
 DOI:
 10.1086/108395
 Bibcode:
 1961AJ.....66..160H