Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..837s&link_type=abstract
The Astronomical Journal, vol. 108, no. 3, p. 837-843
Astronomy and Astrophysics
Astrophysics
19
Astrophysics, Carbon Monoxide, Dwarf Galaxies, Galactic Evolution, Interacting Galaxies, Monatomic Gases, Peculiar Galaxies, Radio Astronomy, Radio Emission, Radio Telescopes, Star Formation, Cosmochemistry, Graphs (Charts), Plumes, Star Formation Rate, Tables (Data)
Scientific paper
We have used the National Radio Astronomy Observatory (NRAO) 12 m telescope to search for CO (J = 1 - 0) emission from the tidal tails of six merging or interacting galaxies. Although these plumes are H I-rich and several contain star forming regions, they are undetected in CO to low levels. The lack of strong CO emission from these plumes in conjunction with the presence of massive star formation is reminiscent of the situation in dwarf irregular galaxies, and the CO/H I limits are consistent with those of dwarfs. The low CO brightness of these plumes may be due either to a low proportion of molecular gas, or to a high N(H2)/ICO conversion factor.
Higdon James L.
Smith Beverly J.
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