Spitzer IRS Observations of Low-Mass Seyfert Galaxies

Details Spitzer IRS Observations of Low-Mass Seyfert Galaxies Spitzer IRS Observations of Low-Mass Seyfert Galaxies

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..267..268t&link_type=abstract

Co-Evolution of Central Black Holes and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 267

Astronomy and Astrophysics

Astronomy

Galaxies: Active, Galaxies: Dwarf, Galaxies: Nuclei, Galaxies: Seyfert, Infrared: Galaxies

Scientific paper

The Sloan Digital Sky Survey has made it possible to identify the first samples of active galaxies with estimated black hole masses below ~ 106 M&sun;. We have obtained Spitzer IRS low-resolution spectra, covering 5-38 μm, of a sample of 41 Seyfert galaxies with low-mass black holes. Our sample includes SDSS-selected objects from the low-mass Seyfert 1 sample of Greene & Ho (2004) and the low-mass Seyfert 2 sample of Barth et al. (2008), as well as NGC 4395 and POX 52. The goals of this work are to examine the dust emission properties of these objects and investigate the relationship between type 1 and type 2 AGNs at low luminosities and low masses, to search for evidence of star formation, and to use emission-line diagnostics to constrain physical conditions within the narrow-line regions. Here we present preliminary results from this project.

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