Near-infrared observations of IRAS minisurvey galaxies

Details Near-infrared observations of IRAS minisurvey galaxies Near-infrared observations of IRAS minisurvey galaxies

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92.1254c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Dec. 1986, p. 1254-1261. NASA-supported research. Previously announced in STAR a

Astronomy and Astrophysics

Astronomy

31

Color-Magnitude Diagram, Galaxies, Infrared Astronomy Satellite, Infrared Photometry, Luminosity, Doppler Effect, Dust, Emission Spectra, Red Shift

Scientific paper

Near-infrared photometry was obtained for 82 galaxies from the Infrared Astronomy Satellite (IRAS) minisurvey, a sample of infrared selected galaxies. The near-infrared colors of these galaxies are similar to those of normal field spiral galaxies, but cover a larger range in J - H and H - K. There is evidence of a tighter correlation between the near and far infrared emission than exists between far-infrared and the visible emission. These results suggest that hot dust emission contributes to the 2.2 micron luminosity, and extinction by dust affects both the near-infrared colors and the visible luminosities. In addition, there is an indication that the far-infrared emission in many of the minisurvey galaxies is coming from a strong nuclear component.

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