2005/11/29 by Jenny E. Greene, J. E. Greene, Aaron J. Barth +3
Physics and Astronomy · #Active galactic nucleus #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Black hole (networking) #Dwarf galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Luminous infrared galaxy #Physics #Star formation #Stellar mass #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1016/j.newar.2006.06.080
6 pages, 5 figures, uses elsart.cls, from "QSO Hosts: Evolution and Environment", P. D. Barthel, D. B. Sanders, eds., August 2005, Leiden University, New Astr
arxiv created 2005/11/29 · openalex publication_date 2006/08/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We describe our efforts to study dwarf galaxies with active nuclei, whose black holes, with masses < 106 Msun, provide the best current observational constraints on the mass distribution of primordial seed black holes. Although these low-mass galaxies do not necessarily contain classical bulges, Barth, Greene, & Ho (2005) show that their stellar velocity dispersions and black hole masses obey the same relation as more massive systems. In order to characterize the properties of the dwarf hosts without the glare of the active nucleus, we have compiled a complementary sample of narrow-line active galaxies with low-mass hosts. The host galaxy properties, both their structures and stellar populations, are consistent with the general properties of low-mass, blue galaxies from Sloan. The black holes in these galaxies are probably radiating close to their Eddington limits, suggesting we may have found Type 2 analogues of narrow-line Seyfert 1 galaxies.