Physics – Optics
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296..565l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 15, 1985, p. 565-575. Research supported by the Robert A. Welch
Physics
Optics
32
H Ii Regions, Infrared Astronomy, Interstellar Gas, Milky Way Galaxy, Radio Astronomy, Star Formation, Astronomical Maps, Cassegrain Optics, Far Infrared Radiation, H Alpha Line, Ionized Gases, Morphology, Nebulae, Spiral Galaxies, Stellar Luminosity
Scientific paper
Far-infrared and radio continuum maps have been made of two inner-Galaxy H II region complexes, G30.8-0.0 and G25.4-0.2, along with radio and molecular line measurements at selected positions. The far-IR emission from each region is dominated by two sources. For both G25.4 and G30.8, the distribution of the emission is similar to that of the radio emission, indicating that OB stars provide most of the heating. There is evidence that extinction plays an important role in G30.8, even in the far-IR. A near-IR point source has been detected in G30.8 at the position of peak far-IR color temperature. This source may be the ionizing star for the core of G30.8. Measurement of forbidden S III 9532 A from G25.4SE indicates that the extinction toward this source is very low, which is difficult to reconcile with previously determined distance measurements to this source.
Brown Raymon L.
Dinerstein Harriet L.
Evans Neal J. II
Harvey Paul Michael
Lester Dan F.
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