Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-06-29
Astrophys.J. 453 (1995) 616
Astronomy and Astrophysics
Astrophysics
AASTeX, 18 pages. Text only. Figures (28) and tables (3) available at ftp://eggneb.astro.ucla.edu/pub/rush/, named Spinoglio95
Scientific paper
10.1086/176425
Aperture photometry from our own observations and the literature is presented for the 12\um\ Galaxies in the near infrared J, H and K bands and, in some cases, in the L band. These data are corrected to ``total'' near--infrared magnitudes, (with a typical uncertainty of 0.3 magnitudes) for a direct comparison with our IRAS fluxes which apply to the entire galaxy. The corrected data are used to derive integrated total NIR and FIR luminosities. We then combine these with blue photometry and an estimate of the flux contribution from cold dust at wavelengths longward of 100\um\ to derive the first {\it bolometric\/} luminosities for a large sample of galaxies. We use multiwavelength correlations to identify several combinations of infrared colors which discriminate between Seyfert~1 and~2 galaxies, LINERs, and ultraluminous starbursts. We find that bolometric luminosity is more closely proportional to 12-micron luminosity than to 60-micron, 25-micron or optical luminosity.
Carrasco Luis
Malkan Matthew A.
Recillas-Cruz Else
Rush Brian
Spinoglio Luigi
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