Astronomy and Astrophysics – Astronomy
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nascp2466..323d&link_type=abstract
Star formation in galaxies, Proceedings of a conference at the California Institute of Technology, Pasadena, California, June 16
Astronomy and Astrophysics
Astronomy
35
Astronomical Models, Dust, Heating, Interstellar Radiation, Molecular Clouds, Star Formation, Stellar Luminosity, Emission Spectra, Energy Distribution, Energy Spectra, Infrared Astronomy Satellite, Morphology
Scientific paper
A simple model was constructed to calculate the far-infrared emission of galaxies made up of a disk component containing cool dust heated by the general interstellar radiation field and of a molecular cloud component containing warm dust heated by recently formed massive stars. This model is fitted to the optical and far-infrared data of 120 Shapley-Ames galaxies and of 20 optically studied mini-survey galaxies, resulting in the determination of blue face-on extinctions and of the total luminosities of recently born massive stars and disk stars. The ratio of these two luminosities is a more reliable star formation activity index than the previously used ratio LIR/L sub B. The results show that infrared selected galaxies are on the average almost three times more dusty than optically selected ones. Only about 10% of the mini-survey galaxies exhibits strongly enhanced star formation.
Brink Kasper
de Jong Teije
No associations
LandOfFree
A simple two-component model for the far-infrared emission from galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A simple two-component model for the far-infrared emission from galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A simple two-component model for the far-infrared emission from galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-859487