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Infrared and radio observations of W51: Another Orion-KL at a distance of 7kpcThe bright infrared sources W51-IRS2 has at least three components with different physical and evolutionary properties. The spatial distribution and the near infrared spectra of the components in IRS2 are remarkably similar to, but more luminous than those found in Orion, where an H2 region of comparable linear size is also located close to a cluster of compact infrared sources. The characteristics of the nearby W51-NORTH H2O maser source, and the detection of 2 micro m H2 quadrupole emission in IRS2 indicate that the mass loss phenomena found in Orion-KL also exist in W51.
Document ID
19810016470
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Genzel, R. (Harvard-Smithsonian Center for Astrophysics Honolulu, HI, United States)
Becklin, E. E. (Hawaii Univ. Honolulu, HI, United States)
Wynn-Williams, C. G. (Hawaii Univ.)
Moran, J. M. (Harvard-Smithsonian Center for Astrophysics)
Reid, M. J. (Harvard-Smithsonian Center for Astrophysics)
Jaffe, D. T. (Harvard-Smithsonian Center for Astrophysics)
Downes, D. (Institut de Radio Astronomie Millimetrique)
Date Acquired
September 4, 2013
Publication Date
January 1, 1981
Subject Category
Astronomy
Report/Patent Number
NASA-CR-164231
Accession Number
81N25005
Funding Number(s)
CONTRACT_GRANT: NASW-3159
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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