Detection of the CO J=2. -->. 1 line in M82 and IC 342

Journal Article · Fri Aug 15 04:00:00 EDT 1980 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/158206· OSTI ID:6757537

Knapp, G R; Phillips, T G; Huggins, P J; Leighton, R B; Wannier, P G

We have searched for the CO(2..-->..1) line at 230 GHz in four galaxies and have detected it in two, IC 342 and M82. Comparison with data for the CO(1..-->..0) line in these galaxies shows that the molecular gas in IC 342 appears to be optically thick; that in M82, however, is of low optical depth. A comparison of the gas and stellar content of the central region of M82 suggests that much of the current star formation is taking place as high-mass stars.

• Research Organization: Owens Valley Radio Observatory, California Institute of Technology
• OSTI ID: 6757537
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 240:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMISTRY
COSMOCHEMISTRY
EMISSION
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
GALAXIES
INTERSTELLAR GRAINS
OPACITY
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PHYSICAL PROPERTIES
SPECTRA