Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-22T20:14:39.251Z Has data issue: false hasContentIssue false
  • English
  • Français

CO Observations of the λ-Orionis Ring

Published online by Cambridge University Press:  05 March 2013

W. J. Lang  and
M. R. W. Masheder
W. J. Lang
Affiliation:
H. H. Wills Physics Laboratory, Bristol University, Tyndall Ave, Bristol, BS8 1TL, UK; [email protected]
M. R. W. Masheder
Affiliation:
H. H. Wills Physics Laboratory, Bristol University, Tyndall Ave, Bristol, BS8 1TL, UK; [email protected]
Rights & Permissions [Opens in a new window]

Abstract

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.

We present results from a new 12CO (J =1→ 0) survey of theλ-Orionis region. The observations cover 110 square degrees uniformly on a Nyquist-sampled grid. We discover CO emission at levels far lower than possible in previous surveys, revealing a structure similar to that seen in IRAS 100μ maps. We derive a total molecular mass of 1·1×104 M☉. A possible explanation for the isolated and localised outbreak of star formation in the region is discussed.

Keywords

ISM: bubblesISM: cloudsISM: HII regionsISM: molecules
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 15 , Issue 1 , 1998 , pp. 70 - 73
Copyright
Copyright © Astronomical Society of Australia 1998

References

Brown, A. G. A., Hartmann, D., & Burton, W. B. 1995, A&A 300, 903 Google Scholar
Digel, S. W., Hunter, S. D., & Mukherjee, R. 1995, ApJ, 441, 270 Google Scholar
Digel, S. W., Lyder, D. A., Philbrick, A. J., Puche, D., & Thaddeus, P. 1996, ApJ, 458, 561 Google Scholar
Duerr, R., Imhoff, C. L., & Lada, C. J. 1982, ApJ, 261, 135 Google Scholar
Gaustad, J. E. 1997, Personal communicationGoogle Scholar
Hartmann, D. 1995, Personal communicationGoogle Scholar
Isobe, S. 1973, in Interstellar Dust and Related Topics, IAU Symposium 52, ed. J. H. Greenburg & H. C. van de Hulst (Reidel: Dordrecht), p. 433 Google Scholar
Maddalena, R. J., & Morris, M. 1987, ApJ, 323, 179 Google Scholar
Murdin, P., & Penston, M. V. 1977, MNRAS, 181, 657 Google Scholar
Reich, W. 1978, A&A, 64, 407 Google Scholar
Wade, C. M. 1957, PhD Thesis, Harvard University Google Scholar
Williams, J. P., de Geus, E. J., & Blitz, L. 1994, ApJ, 428, 693 Google Scholar
Yates, J. A., & Cohen, R. J. 1994, MNRAS, 270, 958 Google Scholar
Zhang, C. Y., & Green, D. A. 1991, AJ, 101, 1006 Google Scholar
Zhang, C. Y., Laureijs, R. J., Chlewicki, G., Clark, F. O., & Wesselius, P. 1989, A&A 218, 231 Google Scholar