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large catalogue of molecular clouds in the Southern sky.
- Source :
-
Monthly Notices of the Royal Astronomical Society . Apr2022, Vol. 511 Issue 2, p2302-2312. 11p. - Publication Year :
- 2022
-
Abstract
- We present a large catalogue of molecular clouds with accurate distance estimates in the Southern sky. Based on the three-dimensional dust extinction map and the best-fitting extinction and distance information of over 17 million stars presented in Guo et al. (2021, ApJ, 906, 47), we have identified 250 dust/molecular clouds in the Southern sky using a hierarchical structure identification algorithm. Amongst these are 71 clouds located at high Galactic latitudes (b < −10°). We have estimated the distances to the clouds by fitting the extinction versus distance profiles of the lines of sight overlapping with the clouds, using a simple Gaussian dust distribution model. The typical uncertainties of the distances are less than 7 per cent. We also provide the physical properties of the individual clouds, including the linear radius, mass and surface mass density. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GAUSSIAN distribution
*CATALOGS
*CATALOGING
*MOLECULAR clouds
*DUST
Subjects
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 511
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Publication Type :
- Academic Journal
- Accession number :
- 155492918
- Full Text :
- https://doi.org/10.1093/mnras/stac213