The relation between FIR and H I emission in galaxies

Details The relation between FIR and H I emission in galaxies The relation between FIR and H I emission in galaxies

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991umas.rept.....s&link_type=abstract

Final Report Massachusetts Univ., Amherst, MA.

Astronomy and Astrophysics

Astronomy

Far Infrared Radiation, Galactic Radiation, Galaxies, Hydrogen Atoms, Microwave Emission, Neutral Gases, Spectral Emission, Cosmic Dust, Galactic Clusters, H I Regions, Infrared Astronomy, Infrared Astronomy Satellite

Scientific paper

This project explored the relationship between the global far-infrared and neutral hydrogen (H I) emission from galaxies, based on data from the Infrared Astronomy Satellite (IRAS) and published radio data. 100 and 60 micron IRAS fluxes were used to establish a temperature corrected measure of the cold dust emission, and H I fluxes were drawn from the literature with the greatest possible consistency. The degree of correlation between the FIR and H I fluxes was found to be better than in previous studies, comparable to the correlation previously found between FIR and CO fluxes. The improvement was obtained largely by (1) separating 'stripped' from 'unstripped' galaxies, and (2) using compatible sources of H I data. Stripping occurs in clusters of galaxies and is probably caused by ram-pressure effects as a galaxy travels through the intergalactic medium. Our results suggest that stripped galaxies have had their outer-disk gas removed (approximately 80% of their total H I) while retaining most of their 100-micron-emitting dust. This strongly shifts the ratio of their 100-micron-to-H I fluxes. The second problem, arising from diverse sources of data, arises because differing telescopes and observational techniques give rise to substantial disagreement in the measured H I flux, and this degrades the correlation of the FIR and H I fluxes.

Affiliated with

Also associated with

No associations

Rating

The relation between FIR and H I emission in 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 The relation between FIR and H I emission in galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The relation between FIR and H I emission in galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1269493