Molecular hydrogen emisison from W51

Journal Article · Thu Apr 15 04:00:00 EST 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/159854· OSTI ID:5080258

Beckwith, S; Zuckerman, B

We have detected emission from the v = 1..-->..0 S(1) quadrupole transition of H/sub 2/ toward the cluster of intense infrared and H/sub 2/O maser sources in W51 NORTH. The apparent luminosity of this line in W51 NORTH is only about 4% of the luminosity of the same line toward the Kleinmann-Low infrared cluster in Orion; however, additional line-of-sight extinction and spatial extent of the source may account for the lower apparent power in W51. Genzel et al. have suggested that the infrared and H/sub 2/O properties of these clusters are quite similar. We discuss the implications of the H/sub 2/ emission for mass loss in the W51 region and briefly consider some recently proposed models of radiation-driven mass outflow from pre--main-sequence stars.

• Research Organization: Department of Astronomy, Cornell University
• OSTI ID: 5080258
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 255:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
COSMIC RADIO SOURCES
ELECTRONIC EQUIPMENT
ELEMENTS
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
H2 REGIONS
HYDROGEN
INFRARED SPECTRA
LUMINOSITY
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MOLECULES
NEBULAE
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPECTRA