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291 records were found.

Comment: 12 pages, 8 figures. To appear in 'Far-infrared and submm seds of Active and Starburst Galaxies', ed. I.Van Bemmel, P.Barthel, B.Wilkes (Elsevier)
Comment: 10 pages, 3 figures. To appear in 'IDM2000: 3rd International Workshop on Identification of Dark Matter', ed N.Spooner (World Scientific)
Comment: 15 pages, 11 figs. to appear in 'The Extragalactic Infrared Background and its Cosmological Implications', IAU Symposium 204, eds M.Harwit and M.G.Hauser
Comment: 20 pages, 25 figures. Accepted for publication in ApJ. Full details of models can be found at http://astro.ic.ac.uk/~mrr/countmodels
Comment: 13 pages, 3 tables, to appear in Proceedings of the 2nd International Workshop on 'The Identification of Dark Matter' (IDM'98), Buxton, UK, 1999, ed. N.Spooner, (World Scientific)
Comment: 10 pages, 7 figures, to appear in proceedings of the Ringberg Workshop on 'Ultraluminous galaxies: Monsters or Babies ?', 1999, eds D.Lutz and L.Tacconi, Astrophys.Space Sci., in press
Comment: 21 pages, 20 figures, submitted to MNRAS
Models for the infrared emission from Infrared Astronomy Satellite (IRAS) galaxies by Rowan-Robinson and Crawford, by deJong and Brink, and by Helou, are reviewed. Rowan-Robinson and Crawford model the 12 to 100 micron radiation from IRAS galaxies in terms of 3 components: a normal disk component, due to interstellar cirrus; a starburst component, modeled as hot stars in an optically thick dust cloud; and a Seyfert component, modeled as a power-law continuum immersed in an n(r) variation r sup -1 dust cloud associated with the narrow-line region of the Seyfert nucleus. The correlations between the luminosities in the different components, the blue luminosity, and the X-ray luminosity of the galaxies are consistent with the model. Spectra from 0.1 to 1000 microns are predicted and compared with available observations. The de Jong and Br...
Methods for determining the cosmological density parameter 0 from large-scale flows are reviewed. Very consistent results using infrared astronomical satellite (IRAS) data have been obtained by different groups with completely independent methods. The two main methods involve either using maps of the galaxy distribution to predict the peculiar velocity of the Local Group or directly comparing the density field inferred from the IRAS galaxy distribution with the peculiar velocities inferred from optical distance methods. All methods based on IRAS data are consistent with Omega0 = 0.7 +/- 0.1, or if Omega0 = 1, with a bias parameter b = 1.2 +/- 0.1. Various problems associated with the method are discussed, including the issue of which waveband is optimum for such studies, bias, the universality of the luminosity function, and the conver...
A quantitative model for the IR emission from the bulge of the Galaxy is constructed using a sequence of models for circumstellar dust shells around late-type stars. The luminosity function for asymptotic giant branch stars and the distribution function for the dust-shell optical depth are derived. The total bolometric luminosity of the bulge population is 170 million solar luminosities and the total mass loss rate is 0.0083 solar mass/yr. The 12 microns and most of the 25 microns flux from the inner part of M31 can be understood as emission from a bulge population similar to that in the Galaxy. A simple model for the IR emission from late-type stars in the disk of the Galaxy is also given.
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