2008A&A...477..473T


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.21CEST21:09:33

2008A&A...477..473T - Astronomy and Astrophysics, volume 477, 473-479 (2008/1-2)

Optical spectroscopy of active galactic nuclei in SA57.

TREVESE D., ZITELLI V., VAGNETTI F., BOUTSIA K. and STIRPE G.M.

Abstract (from CDS):

The cosmological evolution of X-ray-selected and optically selected active galactic nuclei (AGNs) show different behaviours interpreted in terms of two different populations. The difference is evident mainly for low luminosity AGNs (LLAGNs), many of which are lost by optical photometric surveys. We are conducting a spectroscopical study of a composite sample of AGN candidates selected in SA57 following different searching techniques, to identify low luminosity AGNs and break down the sample into different classes of objects. AGN candidates were obtained through optical variability and/or X-ray emission. Of special interest are the extended variable objects, which are expected to be galaxies hosting LLAGNs. Among the 26 classified objects a fair number (9) show typical AGN spectra. Ten objects show Narrow Emission Line Galaxy spectra, and in most of them (8/10) optical variability suggests the presence of LLAGNs.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: Seyfert - X-rays: galaxies

Simbad objects: 27

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Number of rows : 27

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 LEDA 167011 Q? 13 07 13.8 +29 20 40           ~ 5 0
2 [K80] SA 57 12472 G 13 07 29.20 +29 26 25.4   22.58   20.93   ~ 2 0
3 [K80] SA 57 16338 AGN 13 07 30.3 +29 32 22           ~ 3 0
4 T89 598 Q? 13 07 53.1 +29 34 16           ~ 4 0
5 SDSS J130756.68+292738.1 QSO 13 07 56.689 +29 27 38.20   21.53 21.30     ~ 3 0
6 [K80] SA 57 14260 G 13 07 58.37 +29 29 08.2           ~ 1 0
7 2XMM J130803.4+292909 Sy1 13 08 03.3834931966 +29 29 08.854262574   20.39   18.78   ~ 14 0
8 QSO B1305+293 QSO 13 08 05.896 +29 06 53.40     20.37     ~ 17 1
9 SA57X 38 G 13 08 13.52 +29 18 12.5   20.83   19.01   ~ 2 0
10 [K80] SA 57 6825 G 13 08 22.19 +29 18 07.8   22.92   21.26   ~ 2 0
11 SA57X 115 AGN 13 08 24.0 +29 28 19   22.76   22.64   ~ 3 0
12 [BTK98] 918 Q? 13 08 34.14 +29 19 26.2           ~ 2 0
13 SA 57- reg 13 08 38 +29 23.1           ~ 177 0
14 [K80] SA 57 10953 G 13 08 50.34 +29 24 15.0           ~ 1 0
15 NGPFG 3573 Sy1 13 08 53.6 +29 14 06     21.33     ~ 9 0
16 SA57X 61 G 13 08 55.51 +29 21 10.5   20.96   19.05   ~ 2 0
17 [K80] SA 57 9820 G 13 08 56.74 +29 22 29.0           ~ 1 0
18 [K80] SA 57 9342 AGN 13 08 56.8 +29 21 50           ~ 2 0
19 SA57X 81 * 13 09 00.1921160785 +29 22 58.657792615   20.18   18.47   ~ 3 0
20 NGPFG 49151 Q? 13 09 03.78 +29 33 05.3           ~ 3 0
21 SA57X 127 Q? 13 09 17.1 +29 31 04   21.89   21.15   ~ 7 0
22 2MASS J13093458+2923282 Q? 13 09 34.59 +29 23 28.3           ~ 3 0
23 [K80] SA 57 3873 G 13 09 36.84 +29 13 23.9           ~ 1 0
24 [K80] SA 57 2688 G 13 09 42.82 +29 11 24.7           ~ 1 0
25 [VV2010c] J130944.0+291547 Sy2 13 09 44.0 +29 15 47           ~ 7 0
26 [BTK98] 1714 Q? 13 09 49.26 +29 28 00.4           ~ 2 0
27 T89 414 Q? 13 09 51.57 +29 26 16.2           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2019.10.21-21:09:33

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