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AbstractAbstract
[en] The author discusses the morphology of luminous Infrared Astronomy Satellite (IRAS) galaxies. A few comments are made about the direction to be taken in future observations of luminous IRAS galaxies
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Source
National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center; vp; May 1987; vp; Star formation in galaxies; Pasadena, CA (USA); 16-19 Jun 1986; Available from NTIS, PC A99/MF E03
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AbstractAbstract
No abstract available
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Sci. Amer; v. 228(4); p. 28-40
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AbstractAbstract
[en] New observations of the 10 and 20 micron size of the emission region in Arp 220 are presented. Also given are ground based photometry from 1 to 32 micron including measurements of the strength of the silicate feature at 10 micron. The results show that the 20 micron size of Arp is smaller than 1.5 arcsec (500 pc); comparison of IRAS and ground based observations show that IRAS 12 micron flux measured with a large arcmin beam is the same as that seen from the ground with a 3 arcsec aperture. At 10 micron a deep silicate absorption feature is seen that corresponds to a visual extinction of about 50 mag. These results suggest that a very significant portion of the 10 to the 12th power L sub 0 infrared luminosity from Arp 220 comes from a region less than or of the order of 500 pc in diameter. When these results are combined with recent measurement of a broad Brackett alpha line by DePoy and an unresolved 2.2 micron source by Neugebauer, Matthews and Scoville, a very attractive possibility for the primary luminosity source Arp 220 is a dust embedded compact Seyfert type nucleus
Primary Subject
Source
National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center; vp; May 1987; vp; Star formation in galaxies; Pasadena, CA (USA); 16-19 Jun 1986; Available from NTIS, PC A99/MF E03
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Conference; Numerical Data
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AbstractAbstract
No abstract available
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Astrophysical Journal; v. 175(3); p. 699-706
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AbstractAbstract
No abstract available
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Astrophysical Journal; v. 181(1); p. L27-L31
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AbstractAbstract
No abstract available
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Fazio, G.G. (ed.) (Harvard Coll. Observatory, Cambridge, Mass. (USA)); Astrophysics and Space Science Library Proceedings; v. 63; p. 125; ISBN 90-277-0791-X; 
; 1977; p. 125; D. Reidel; Dordrecht, The Netherlands; Symposium on infrared and submillimeter astronomy; Philadelphia, USA; 8 - 10 Jun 1976; Published in summary form only.
; 1977; p. 125; D. Reidel; Dordrecht, The Netherlands; Symposium on infrared and submillimeter astronomy; Philadelphia, USA; 8 - 10 Jun 1976; Published in summary form only.
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AbstractAbstract
[en] Infrared photometric observations of three components in NGC 6334 have been made. Two of the components are associated with compact H II regions and are similar to the sources in W3. The third component is almost coincident with the OH maser source and shows no know radio continuum emission. A component of the infrared emitting region is less than about 1'' in diameter at 10μm and shows a strong silicate dust absorption feature. In many respects this source is very similar to the BN infrared source in the Orion Nebula
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Moorwood, A.F.M. (ed.); European Space Research Organization, Neuilly-sur-Seine (France); p. 39-42; Nov 1974; 8. ESLAB symposium; Frascati, Italy; 04 Jun 1974
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AbstractAbstract
No abstract available
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Astrophysical Journal; v. 182(1); p. L7-L9
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Becklin, E.E.; Neugebauer, G.; Oke, J.B.; Searle, L.
Hale Observatories, Pasadena, Calif. (USA)1975
Hale Observatories, Pasadena, Calif. (USA)1975
AbstractAbstract
[en] Slit spectra, spectrophotometric scans and infrared broad band observations are presented. Eight of the program galaxies can be classified as Seyfert galaxies. Arguments are given that thermal, nonthermal, and stellar radiation components were present. One group of Seyfert galaxies was characterized both by the presence of a high-density region of gas and by a continuum dominated by nonthermal radiation. The continua of the remaining program Seyferts, which did not have a high density region of gas, were dominated by thermal radiation from dust and a stellar continuum. Ten of the galaxies, which are not Seyfert galaxies, are shown to be examples of extragalactic H2 regions
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Source
1975; 47 p; NASA-CR--143379; Prepared in Cooperation with Calif. Inst. of Technol., Pasadena and Carnegie Inst. of Washington, Pasadena, Calif.. Available from NTIS. $3.75.
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AbstractAbstract
No abstract available
Original Title
Area approximately 60 pc (1'') in diameter
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Astrophys. J., Lett; v. 186(2); p. L69-L72
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