NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-17 T10:52:57 PDT
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For refcode 1998AJ....116.1650S:
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Copyright by American Astronomical Society. Reproduced by permission
1998AJ....116.1650S ACTIVE GALACTIC NUCLEUS ACTIVITY IN GIANT, LOW SURFACE BRIGHTNESS GALAXIES J. SCHOMBERT Department of Physics, University of Oregon, Eugene, OR 97403; js@abyss.uoregon.edu Received 1998 April 21; revised 1998 July 6 ABSTRACT A search of large, H I-rich disk galaxies finds a significantly higher fraction of low-luminosity active galactic nucleus (AGN) signatures compared with other late-type galaxies. Approximately half the galaxies selected in this sample have AGN-like behavior in their cores; the rest have H II nuclei resulting from simple star formation. Since AGN behavior is not evident in all the sample galaxies, which where selected by high gas mass, we speculate that it is the fuel flow rate that is the common feature between late-type low surface brightness disks and other active nuclear galaxies. Key words: galaxies: active-galaxies: nuclei-galaxies: spiral
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