Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108.1244d&link_type=abstract
The Astronomical Journal, vol. 108, no. 4, p. 1244-1255
Astronomy and Astrophysics
Astronomy
23
H Alpha Line, Infrared Astronomy, Infrared Imagery, Infrared Spectra, Spiral Galaxies, Star Formation, Stellar Luminosity, Stellar Spectra, Astronomical Spectroscopy, H Ii Regions, Infrared Astronomy Satellite, Infrared Spectroscopy, Interplanetary Dust
Scientific paper
High resolution 60 and 100 micron images obtained with the Infared Astronomical Satellite (IRAS) are compared with H alpha images in order to investigate the origin of the far-infrared luminosity within the late-type spiral galaxy M101. There is a good correspondence between the far-infrared and H-alpha morphology. The far-infrared and H-alpha luminosities have been measured at 129 independent locations on the star forming disk of M101. After correcting the H-alpha luminosity for extinction and extrapolating the IRAS (40-120 microns) luminosity to 1000 microns we find that the far-infrared luminosity is commensurate with that expected from the O and B stars which are required to ionize the hydrogen gas, at all locations within M101. Additionally, the IRAS HiRes 60 and 100 micron images reveal that the dust temperature peaks coincide identically with the location of H II regions. The far-infrared luminosity of M101 is radiated primarily by dust with temperatures well in excess of that expected for cirrus, but similar to that observed for Galactic and extragalactic H II regions.
Devereux Nicholas A.
Scowen Paul A.
No associations
LandOfFree
The origin of the far-infrared luminosity within the spiral galaxy M101 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 origin of the far-infrared luminosity within the spiral galaxy M101, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The origin of the far-infrared luminosity within the spiral galaxy M101 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1069801