Hostname: page-component-745bb68f8f-v2bm5 Total loading time: 0 Render date: 2025-01-13T00:34:49.014Z Has data issue: false hasContentIssue false
  • English
  • Français

Molecular Mass Distribution in the Outer Galaxy

Published online by Cambridge University Press:  25 May 2016

Sean J. Carey ,
Kathryn N. Mead  and
Marc L. Kutner
Sean J. Carey
Affiliation:
Rensselaer Polytechnic Institute, Troy, NY, 12180, USA [email protected]
Kathryn N. Mead
Affiliation:
NRAO, Tucson, AZ, USA
Marc L. Kutner
Affiliation:
NRAO, Tucson, AZ, USA

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The extent and nature of molecular material in the outer Galaxy (R > R⊙) has been an open, interesting question since the discovery of molecular material in the outer Galaxy (Kutner & Mead, 1981). From large scale CO surveys, two estimates of the total molecular mass have been made with the same result, M(H2) = 6 × 108 M⊙ (Wouterloot et al., 1990), (Digel et al., 1990). Both estimates have a strong bias towards large, star forming (warm) clouds. Wouterloot et al. used the IRAS point source catalog as a finder chart for their observations and the inner Galaxy mass distribution to scale their result. Digel et al. conducted an unbiased survey with a large (8.8 arcminute) beam which underestimated the amount of material in small clouds due to the effects of beam dilution.

Type
Chapter 7: How are we to Understand the Small Scale Structure of the ISM?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 607 - 608
Copyright
Copyright © Kluwer 1996 

References

Carey, S. J., Mead, K. N., & Kutner, M. L. 1994, ApJ, in preparation Google Scholar
Digel, S., Bally, J., & Thaddeus, P. 1990, ApJ, 357, 29 CrossRefGoogle Scholar
Peters, W. L., & Bash, F. N. 1987, ApJ, 317, 646 CrossRefGoogle Scholar
Lequeux, J., Allen, R. J., & Guilloteau, S. 1993, A&A, 280, L23 Google Scholar
Kutner, M. L. & Mead, K. N. 1981, ApJ, 249, L15 CrossRefGoogle Scholar
Mead, K. N., & Kutner, M. L. 1988, ApJ, 330, 399 Google Scholar
Wouterloot, J. G. A., Brand, J., Burton, W. B., & Kwee, K. K. 1990, A&A, 230, 21 Google Scholar