Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322...88g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 322, Nov. 1, 1987, p. 88-100.
Astronomy and Astrophysics
Astronomy
25
Astronomical Photometry, Centimeter Waves, Far Infrared Radiation, Galactic Structure, Infrared Spectra, Absorption Spectra, Hydrogen, Hydroxyl Emission, Infrared Astronomy Satellite, Interstellar Masers, Solar Neighborhood
Scientific paper
Arecibo observations at 21 cm and 18 cm of a sample of galaxies selected for their intense far-infrared (FIR) emission are reported. The objective was to search for H I absorption and OH maser emission. No new cases were found. The significance of this null result is discussed both in terms of spatial distribution of the interstellar gas and dust and in terms of the continuum luminosity of the nucleus. Nevertheless, the H I profiles are extraordinary in that most are convex (single peak). This may suggest disruption of the disk rotation system in some cases. Little correlation is found between the hydrogen mass of these galaxies and their FIR luminosity. Comparison of these quantities suggests that the dust in these galaxies is under conditions very different from the solar neighborhood. Much more of the FIR emission apparently comes from H II regions than in normal galaxies. There is an excellent correlation between IR flux and radio continuum flux. The ratio of these two is the same as for normal spirals, which is surprising considering the many variables which could change this ratio.
Dickey John M.
Garwood Robert Walter
Helou George
No associations
LandOfFree
Arecibo observations of IRAS galaxies at 21 and 18 centimeters 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 Arecibo observations of IRAS galaxies at 21 and 18 centimeters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arecibo observations of IRAS galaxies at 21 and 18 centimeters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1713289