2008A&A...488..145H


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.07CEST20:11:16

2008A&A...488..145H - Astronomy and Astrophysics, volume 488, 145-149 (2008/9-2)

Extended emission-line regions in low-redshift quasars. Dependence on nuclear spectral properties.

HUSEMANN B., WISOTZKI L., SANCHEZ S.F. and JAHNKE K.

Abstract (from CDS):

We searched for the presence of extended emission-line regions (EELRs) around low-redshift QSOs. We observed a sample of 20 mainly radio-quiet low-redshift quasars (z<0.3) by means of integral field spectroscopy. After decomposing the extended and nuclear emission components, we constructed [OIII] λ5007 narrow-band images of the EELR to measure the total flux. From the same data we obtained high S/N (>50) nuclear spectra to measure properties such as [OIII]/Hβ flux ratios, FeII equivalent widths and Hβ line widths. A significant fraction of the quasars (8/20) show a luminous EELR, with detected linear sizes of several kpc. Whether or not a QSO has a luminous EELR is strongly related with nuclear properties, in the sense that an EELR was detected in objects with low FeII equivalent width and large Hβ FWHM. The EELRs were detected preferentially in QSOs with larger black hole masses. There is no discernible relation, however, between EELR detection and QSO luminosity and Eddington ratio.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: quasars: emission-lines - galaxies: ISM

Status at CDS:  

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 2E 93 Sy1 00 29 13.7012280721 +13 16 03.946876800   15.70 15.41     ~ 389 0
2 2E 217 Sy1 00 54 52.1185254329 +25 25 38.983464017     15.42     ~ 336 0
3 HE 0132-0441 QSO 01 32 00.0 -04 41 00           ~ 4 0
4 HE 0157-0406 QSO 01 57 00.0 -04 06 00           ~ 4 0
5 Mrk 1014 Sy1 01 59 50.2529351498 +00 23 40.874250335   16.08 15.87     ~ 511 0
6 QSO B1217+023 BLL 12 20 11.8845856 +02 03 42.224641   16.15 15.97 15.6   ~ 292 1
7 2MASX J15474353+2052167 Sy1 15 47 43.5377678391 +20 52 16.613895999   16.80 16.69 15.70   ~ 441 0
8 HE 2158-0107 QSO 21 58 00.0 -01 07 00           ~ 7 0
9 Mrk 304 Sy1 22 17 12.2638362727 +14 14 20.918554073   15.02 14.66     ~ 316 0
10 HE 2307-0254 QSO 23 07 00.0 -02 54 00           ~ 4 0
11 4C -01.61 BLL 23 51 56.1224724223 -01 09 13.315055954   16.83 16.59     ~ 308 1
12 HE 2353-0420 QSO 23 53 00.0 -04 20 00           ~ 4 0

    Equat.    Gal    SGal    Ecl

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2020.04.07-20:11:16

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