Abstract
We report the detection of a number of molecular clouds beyound the optical disk of the Galaxy. The two most distant of these objects were found to have kinetic temperatures similar to star-forming molecular clouds in the Solar neighborhood. Hα emission was detected from the most distant cloud (RGC=28 kpc) and a B 0.5 I star identified as the most likely source of ionization. The photometric distance to the star corroborates the location of the molecular and ionized gas beyond the optical disk.
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© 1995 Springer-Verlag
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de Geus, E.J., Digel, S.W. (1995). Molecular gas and star formation beyond the optical disk of the galaxy. In: Winnewisser, G., Pelz, G.C. (eds) The Physics and Chemistry of Interstellar Molecular Clouds. Lecture Notes in Physics, vol 459. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0102085
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DOI: https://doi.org/10.1007/BFb0102085
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