Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...145...45o&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 145, no. 1, April 1985, p. 45-49.
Astronomy and Astrophysics
Astronomy
2
Galactic Radiation, Infrared Astronomy, Interstellar Extinction, Star Distribution, Stellar Radiation, Near Infrared Radiation, Red Giant Stars, Stellar Evolution, Stellar Luminosity
Scientific paper
A model distribution of stellar radiation is constructed for the southern Milky Way and is improved for the northern Milky Way, by reference to recent balloon observations of the extended galactic emission at 2.4 microns. The model accounts for a local radiation density, and well approximates the distributions of extended galactic light in the B and V bands, taking into account the contribution of scattered light. With a reasonable assumption that the 2.4 micron volume emissivity of the so-called 5 kpc ring is dominated mainly by M I and M III stars, it is concluded that about 80 percent of the 2.4 micron volume emissivity of the ring component is ascribed to M III stars. With this assignment, the near-infrared source count observations (Kawara et al., 1982) are explained, and it is demonstrated that the near-infrared observations of the extended galactic emission is consistent with the bimodal star formation model (Guesten and Mezger, 1982).
Oda Nobuyuki
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