An Intermediate-Mass Black Hole in the Dwarf Seyfert 1 Galaxy POX 52

Simple item page
dc.creatorBarth, A. J.
dc.creatorHo, L. C.
dc.creatorSargent, W. L. W.
dc.date2003-10-15
dc.date.accessioned2026-07-07T02:10:29Z
dc.date.available2026-07-07T02:10:29Z
dc.descriptionWe describe new observations of POX 52, a previously known but nearly forgotten example of a dwarf galaxy with an active nucleus. While POX 52 was originally thought to be a Seyfert 2 galaxy, the new data reveal an emission-line spectrum very similar to that of the dwarf Seyfert 1 galaxy NGC 4395, with clear broad components to the permitted line profiles. The host galaxy appears to be a dwarf elliptical; this is the only known case of a Seyfert nucleus in a galaxy of this type. Applying scaling relations to estimate the black hole mass from the broad H-beta linewidth and continuum luminosity, we find M_BH ~ 1.6x10^5 solar masses. The stellar velocity dispersion in the host galaxy is 36+/-5 km/s, also suggestive of a black hole mass of order 10^5 solar masses. Further searches for AGNs in dwarf galaxies can provide crucial constraints on the demographics of black holes in the mass range below 10^6 solar masses.
dc.description4 pages. To appear in AGN Physics with the Sloan Digital Sky Survey, ed. G.T. Richards & P.B. Hall (ASP Conference Series)
dc.identifierhttps://arxiv.org/abs/astro-ph/0310435
dc.identifierhttp://arxiv.org/abs/astro-ph/0310435
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6754
dc.subjectAstrophysics
dc.titleAn Intermediate-Mass Black Hole in the Dwarf Seyfert 1 Galaxy POX 52
dc.typetext

Files

Collections

arXiv