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Type 1 AGN at low z | | Jonathan Stern
; Ari Laor
; | | Date: |
22 Mar 2012 | | Abstract: | We present the emission properties of a sample of 3,579 type 1 AGN, selected
based on the detection of broad H-alpha emission. The sample covers the range
of black hole mass 10^6<M_BH/M_Sun<10^9.5 and luminosity in Eddington units
10^-3 < L/L_Edd < 1. Our main results are: 1. The distribution of the H-alpha
FWHM values is independent of luminosity. 2. The observed mean optical-UV SED
is well matched by a fixed shape SED of luminous quasars, which scales linearly
with broad H-alpha luminosity, and a host galaxy contribution. 3. The host
galaxy r-band (fibre) luminosity function follows well the luminosity function
of inactive non-emission line galaxies (NEG), consistent with a fixed fraction
of ~3% of NEG hosting an AGN, regardless of the host luminosity. 4. The
optical-UV SED of the more luminous AGN shows a small dispersion, consistent
with dust reddening of a blue SED, as expected for thermal thin accretion disc
emission. 5. There is a rather tight relation of nuL_nu(2 keV) and broad
H-alpha luminosity, which provides a useful probe for unobscured (true) type 2
AGN. | | Source: | arXiv, 1203.5005 | | Services: | Forum | Review | PDF | Favorites | |
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