Mathematics – Logic
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331l..81y&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 331, Aug. 15, 1988, p. L81-L85. Research supported by the Alfred
Mathematics
Logic
37
Interstellar Gas, Ionized Gases, Molecular Gases, Peculiar Galaxies, Spiral Galaxies, Star Distribution, Star Formation Rate, Carbon Monoxide, Galactic Nuclei, H Alpha Line, H Ii Regions
Scientific paper
New observations probing the molecular and ionized gas contents of the ultrahigh surface brightness peculiar spiral galaxy NGC 2146 are presented. Interferometric mapping in the J = 1-0 transition of CO shows that the dynamical center of the galaxy lies toward a dense dust lane. Single-dish CO observations indicate that the molecular mass of the galaxy in the central 15 kpc is 1010M_sun;. Optical spectroscopy of the disk and arc provide evidence for a high mass concentration (109M_sun;) within the central 100 pc and highly noncircular motions along the major axis. The high-mass star formation efficiency is elevated by more than two orders of magnitude in the center of NGC 2146 relative to that in the outer disk. These unusual morphological and dynamical features may be the result of a galaxy-galaxy interaction, but the other galaxy has yet to be identified.
Claussen Mark J.
Kleinmann Susan G.
Rubin Vera Cooper
Scoville Nick
Young Judith S.
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