2004A&A...415...39D


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.19CET17:29:44

2004A&A...415...39D - Astronomy and Astrophysics, volume 415, 39-46 (2004/2-3)

Investigating the central engine of Seyfert 2 galaxies with and without Polarized Broad Lines.

DELUIT S.J.

Abstract (from CDS):

We study the hard X-ray emission of two samples of Seyfert 2 galaxies with and without Polarized Broad Lines (PBL). In the hard X-ray domain, absorption effects do not significantly modify the intrinsic emission allowing us a direct access to the central engine. The purpose of this study is to compare the primary emission of the two Seyfert 2 subclasses in order to investigate the nature of their central engine and to test unified models according to which they both have a hidden Seyfert 1 nucleus. We compute the average hard X-ray spectra of Seyfert 2 galaxies with and without PBL observed with BeppoSAX/PDS (15-136keV). The two spectra have a common general behavior at first sight, but investigating deeper we find differences in the intrinsic properties of the two categories of Seyfert 2 galaxies. Sy 2 with polarized broad lines have physical conditions close to those of Sy 1 galaxies whereas Sy 2 without PBL differ substantially, suggesting that they may have a particular place in the scheme of Seyfert galaxies.

Abstract Copyright:

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

Simbad objects: 16

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Number of rows : 16

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2MASX J00215355-7910077 Sy2 00 21 53.5520857547 -79 10 08.021572343   17.33 16.3 15.19   ~ 74 0
2 NGC 1358 Sy2 03 33 39.6845285938 -05 05 22.226986857   14.10 13.05 11.76   ~ 185 1
3 2MASX J05210136-2521450 Sy2 05 21 01.3987198411 -25 21 45.269338983   15.47 14.75     ~ 436 0
4 NGC 2110 Sy2 05 52 11.3760694860 -07 27 22.489931610   14.77 13.51 11.86   ~ 597 1
5 MCG+05-23-016 LIN 09 34 06.313 +27 20 59.75   16       ~ 66 0
6 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 799 3
7 2MASX J12094512-0501140 Sy2 12 09 45.125 -05 01 14.08   17.52 17.8 16.56   ~ 89 1
8 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1211 2
9 NGC 4507 Sy2 12 35 36.6328010225 -39 54 33.661858548   12.95 13.54 11.70 12.4 ~ 445 0
10 NGC 5252 Sy2 13 38 15.8711551761 +04 32 33.525903711   15.21 14.21     ~ 432 0
11 NGC 5506 AGN 14 13 14.901 -03 12 27.22   15.25 14.38     ~ 1008 0
12 NGC 6300 Sy2 17 16 59.473 -62 49 13.98   10.88 13.08 9.44 10.2 ~ 369 0
13 LEDA 64593 Sy2 20 23 25.4 +11 31 35   15.83       ~ 48 1
14 NGC 7172 Sy2 22 02 01.897 -31 52 11.60   12.72 13.61 11.15   ~ 478 1
15 2MASX J23083397+0521293 Sy2 23 08 33.9521188955 +05 21 29.763819747           ~ 136 0
16 NGC 7582 GiP 23 18 23.621 -42 22 14.06 11.62 10.92 10.62     ~ 819 2

    Equat.    Gal    SGal    Ecl

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2021.01.19-17:29:44

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