1. 5 - 3. 5 micron spectroscopy of the Orion H2 source

Technical Report · Sat Dec 01 04:00:00 EST 1984

OSTI ID:5605252

Davis, D S; Larson, H P; Hofmann, R

A synopsis of current research with near-infrared airborne spectroscopy of the Orion molecular hydrogen emission line source is presented. It is suggested that (H2) is the most abundant molecular species in the interstellar medium and is of paramount importance to understand its behavior and distribution in that medium. The H2 has no permanent electric dipole moment which precludes dipole transitions. It is, however, detected in absorption against background starlight by UV electronic transitions and in the IR through electric quadrupole rotation/vibration and pure rotation emission lines. The physical parameters of this region, in the context of their relationships to other members of the complex family of Orion objects, molecular clouds, compact IR sources, H 2 regions, and shock fronts are described.

• Research Organization: Arizona Univ., Tucson (USA)
• OSTI ID: 5605252
• Report Number(s): N-85-17864
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHEMISTRY
COSMIC RADIO SOURCES
COSMOCHEMISTRY
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
H2 REGIONS
HYDROGEN
INFRARED RADIATION
INTERSTELLAR SPACE
MOLECULAR STRUCTURE
NEAR INFRARED RADIATION
NEBULAE
NONMETALS
RADIATION SOURCES
RADIATIONS
SPACE
SPECTRA