Detection of the S(8), S(12), S(13), S(14), and S(15), v = 0. -->. 0 rotation lines of molecular hydrogen in orion

Journal Article · Thu Oct 15 04:00:00 EDT 1981 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183660· OSTI ID:6021846

Knacke, R F; Young, E T

The molecular hydrogen rotation lines, v = 0..-->..0, S(8), S(12), S(13), S(14), and S(15), have been detected in the shocked region of the Orion molecular cloud. Line frequencies agree with predicted values to experimental accuracy ( +- 1 cm/sup -1/). The H/sub 2/ energy levels are in LTE at 2000 +- 400 K up to the J = 17 level at 1.86 eV above the ground state. The 2.1 ..mu..m extinction at peak 1 is found to be betwen 2.2 and 4.0 mag. We find evidence for variations of H/sub 2/ emission intensity, apart from reddening, and set limits on the amount of gas hotter than 2000 K.

• Research Organization: Astronomy Program, State University of New York, Stony Brook
• OSTI ID: 6021846
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 249:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELEMENTS
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FUNCTIONS
HYDROGEN
INFRARED SPECTRA
INTERSTELLAR SPACE
MOLECULES
NONMETALS
ROTATIONAL STATES
SHOCK WAVES
SPACE
SPECTRA
SPECTRAL FUNCTIONS