Multiaperture infrared photometry of the nuclei of spiral galaxies

Details Multiaperture infrared photometry of the nuclei of spiral galaxies Multiaperture infrared photometry of the nuclei of spiral galaxies

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90..731c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, May 1985, p. 731-735.

Astronomy and Astrophysics

Astronomy

18

Astronomical Photometry, Galactic Nuclei, Infrared Astronomy, Spiral Galaxies, Stellar Luminosity, Thermal Radiation, Far Infrared Radiation, H Alpha Line, Molecular Clouds, Red Giant Stars, Stellar Evolution, Stellar Flares

Scientific paper

Results of a multiaperture, 2.2- and 10-micron photometric survey of the nuclei of 25 nearby, low-inclination spiral galaxies are presented. The 10-micron nuclear luminosities, attributed to thermal reradiation by dust in regions of active star formation, and 10-micron/2.2-micron nuclear flux ratios, are examined as a function of the slope of 2.2-micron growth curve. No correlation is seen, suggesting that the contribution of young, red giants and supergiants to the near-infrared light of spiral nuclei is small. These results indicate that the 2.2-micron light of galaxies in the present sample is not radically altered by starbursts.

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