2015MNRAS.449.2174C

Query : 2015MNRAS.449.2174C

2015MNRAS.449.2174C - Mon. Not. R. Astron. Soc., 449, 2174-2193 (2015/May-2)

Reaching the peak of the quasar spectral energy distribution - I. Observations and models.

COLLINSON J.S., WARD M.J., DONE C., LANDT H., ELVIS M. and McDOWELL J.C.

Abstract (from CDS):

We perform a spectral analysis of a sample of 11 medium redshift (1.5 ≲ z ≲ 2.2) quasars. Our sample all have optical spectra from the SDSS, infrared spectra from GNIRS and TripleSpec, and X-ray spectra from XMM-Newton. We first analyse the Balmer broad emission line profiles which are shifted into the IR spectra to constrain black hole masses. Then we fit an energy-conserving, three component accretion model of the broad-band spectral energy distribution (SED) to our multiwavelength data. 5 out of the 11 quasars show evidence of an SED peak, allowing us to constrain their bolometric luminosity from these models and estimate their mass accretion rates. Based on our limited sample, we suggest that estimating bolometric luminosities from L_5100  A and L2-10keV may be unreliable, as has been also noted for a low-redshift, X-ray selected active galactic nucleus sample.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): accretion, accretion discs - black hole physics - galaxies: active - galaxies: high-redshift - quasars: supermassive black holes

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PB 8479 QSO 00 41 49.6457973432 -09 47 05.041265820   17.59 17.36     ~ 36 0
2 [VV2006] J004315.1+011445 QSO 00 43 15.0875296584 +01 14 45.612071232   18.35 18.12     ~ 45 0
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 Mrk 1502 Sy1 00 53 34.9331107632 +12 41 35.929269132   14.41 14.03     ~ 1242 1
5 QSO B0115-0108 QSO 01 18 27.9892034376 -00 52 39.850060944   18.54 18.32     ~ 51 0
6 QSO J0157-0048 QSO 01 57 33.8745160536 -00 48 24.537435876   18.28 18.15     ~ 60 0
7 Z 395-23 Sy1 05 16 11.4092471904 -00 08 59.157166920   14.30 13.92     ~ 953 1
8 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
9 3C 205 Sy1 08 39 06.5324936736 +57 54 17.069000688   18.10 17.62     ~ 264 1
10 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
11 [VV2006] J102117.8+131545 QSO 10 21 17.7480188520 +13 15 45.943294392   18.81 18.57     ~ 31 0
12 2MASS J10440112+2128039 QSO 10 44 01.1319872256 +21 28 03.975485160   18.74 18.35     ~ 23 0
13 QSO J1240+4740 QSO 12 40 06.7125915168 +47 40 03.323580240   18.47 18.17     ~ 35 1
14 LBQS 1244+0238 Sy1 12 46 35.2527826632 +02 22 08.782546368   16.57 16.37     ~ 313 0
15 QSO B1348+2707 QSO 13 50 23.6814737976 +26 52 43.090837104   17.66 17.49     ~ 39 0
16 [VV2006] J232810.5+150013 QSO 23 28 10.5646154280 +15 00 12.924846000   19.64 19.18     ~ 29 0
17 [VV2006] J233228.2+000033 QSO 23 32 28.2147557496 +00 00 32.842101924   19.14 18.84 18.28 18.11 ~ 37 0

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