CO J = 2 to 1 core mapping of the star-burst galaxy M82

Details CO J = 2 to 1 core mapping of the star-burst galaxy M82 CO J = 2 to 1 core mapping of the star-burst galaxy M82

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218...24p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 24-30. Research supported by the Direccion General

Astronomy and Astrophysics

Astrophysics

9

Astronomical Maps, Carbon Monoxide, Galactic Nuclei, Starburst Galaxies, Galactic Structure, Very Large Array (Vla)

Scientific paper

Observations of the nucleus of M82 obtained with the 12-m Kitt Peak antenna show that the CO J = 1 to 2 peak temperature structure possesses a dual-core morphology similar to that found at J = 1 to 0. The results indicate that the predominant regime of low opacity gas is located to the north of the star-burst zone, suggesting that material to the south of the core is dissociated by an intense local radiation field and that material to the north is accreted from a low-metallicity low-density H-I halo, ultimately to coalesce with a central accretion disk. The possible contribution of an optically thin component of emission is considered.

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