The Cygnus X region. V. catalogue and distances of optically visible H II regions.
Abstract
A catalogue of the nebnlae in the western half of the X region is presented. It contains positions, shapes and surface brightnesses in H of the nebnlae. For 90 objects, which also have radio data, the distances are derived from reddening data. These distances range from 1 Kpc to greater than 4 Kpc. A ring of flIaments surrounding the entire gnus X region is briefly discussed. Key words: emission nebulae - stellar reddening - radio brightness - distance gnus X
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- 1969
- Bibcode:
- 1969A&A.....1..270D