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Distance and absorption features in the CG 30/CG 31/CG 38 complex *
J. Knude and
Received 28 April 2000 / Accepted 14 August 2000
We report a possible confirmation of the short 200 pc distance to the cometary globules CG 30/31/38 suggested by a previously discussed (V - I) - V diagram to Vlim 20 mag. New 2 magnitudes deeper V and I photometry centered on CG 31A indicate the presence of visual extinction AV = at 200 pc. In addition, we may have measured an absorption gradient along the tail of CG 31C with AV varying between and . The Hipparcos - Tycho-2 sample of double stars is used to demonstrate that the bright - red confinements in the colour-magnitude diagram, which we use to estimate the distance and absorption of nearby molecular clouds, probably can not be caused by duplicity.
Key words: stars: formation stars: individual: CG 30/CG 31 ISM: clouds ISM: dust, extinction
Send offprint requests to: J.K. Knude
Online publication: October 30, 2000