2001A&A...366..765G


Query : 2001A&A...366..765G

2001A&A...366..765G - Astronomy and Astrophysics, volume 366, 765-770 (2001/2-2)

Nuclear obscuration and scattering in Seyfert 2 galaxies.

GU Q., MAIOLINO R. and DULTZIN-HACYAN D.

Abstract (from CDS):

We study the relationship between gaseous absorbing column density (NH), infrared colors and detectability of the broad lines in a large sample of Seyfert 2 galaxies(Sy2s). We confirm that Sy2s without polarized broad lines tend to have cooler 60µm/25µm colors; this correlation was previously ascribed to the effect of obscuration towards the nuclear region. We find some evidence that Sy2s without polarized broad lines have larger absorbing column density (NH) and that a fraction of them are characterized by dust lanes crossing their nuclei. However, we find that the IR colors do not correlate with NH, in disagreement with the obscuration scenario. Also, Sy2s without polarized broad lines follow the same radio-FIR relation as normal and starburst galaxies, at variance with Sy2s with polarized broad lines. These results indicate that the lack of broad lines in the polarized spectrum of Sy2s is mostly due to the contribution/dilution from the host galaxy or from a circumnuclear starburst, though a lesser extent to the obscuration toward the nuclear region also plays a role.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: ISM - galaxies: Seyfert - galaxies: statistics

Simbad objects: 40

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Number of rows : 40
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 34 Sy2 00 11 06.612 -12 06 28.33   14.14 13.52     ~ 331 0
2 NGC 262 Sy2 00 48 47.1422732952 +31 57 25.043908428 14.04 13.90 13.06 8.53   ~ 705 3
3 M 77 GiP 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4322 2
4 NGC 1143 IG 02 55 09.7142741256 -00 10 40.248085584   13.2       ~ 140 1
5 Mrk 1066 Sy2 02 59 58.5970307633 +36 49 13.808979663   14.89 13.96     ~ 335 1
6 NGC 1386 GiP 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 492 1
7 NGC 1667 Sy2 04 48 37.1804579280 -06 19 11.824427712   13.66 12.86 11.72   ~ 348 1
8 LEDA 17155 Sy2 05 21 01.3994605776 -25 21 45.321827832   15.47 14.75     ~ 457 0
9 NGC 2110 Sy2 05 52 11.3768668776 -07 27 22.507465392   14.77 13.51 11.86   ~ 626 1
10 Mrk 3 Sy2 06 15 36.2812259376 +71 02 14.837219808 14.21 14.03 12.97     ~ 881 3
11 NGC 2273 Sy2 06 50 08.6691789600 +60 50 44.864645136   14.50 13.54     ~ 493 3
12 Mrk 1210 Sy2 08 04 05.8608218112 +05 06 49.823376120   14.55 13.7     ~ 281 2
13 2MASS J09134545+4056282 Sy2 09 13 45.4951283928 +40 56 28.215343572   19.69 19.21     ~ 244 2
14 ESO 434-40 Sy2 09 47 40.1332188528 -30 56 55.960779696   14.10 13.69 12.44   ~ 511 0
15 NGC 3081 Sy2 09 59 29.5437024336 -22 49 34.747341960   13.06 13.55 11.67 12.1 ~ 438 0
16 NGC 3281 Sy2 10 31 52.086 -34 51 13.40   12.62 14.02 11.17   ~ 337 0
17 NGC 3393 Sy2 10 48 23.4653152920 -25 09 43.487648784   13.10 13.95 11.67 12.2 ~ 382 1
18 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1260 2
19 NGC 4507 Sy2 12 35 36.6338976888 -39 54 33.710416272   12.95 13.54 11.70 12.4 ~ 464 0
20 IC 3639 Sy2 12 40 52.8344884344 -36 45 21.057011172   13.01 13.50 11.87 12.7 ~ 233 1
21 NGC 4941 Sy2 13 04 13.1036380320 -05 33 05.752803672   13.18 12.23 10.74   ~ 332 0
22 MCG-03-34-064 Sy2 13 22 24.4583154360 -16 43 42.481822404   14   13.16   ~ 282 2
23 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4230 3
24 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 454 1
25 NGC 5347 Sy2 13 53 17.7984934128 +33 29 27.011618196   13.46 12.70     ~ 336 1
26 Mrk 463E Sy2 13 56 02.886 +18 22 18.84   15.01 14.22     ~ 144 1
27 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1093 2
28 NGC 5506 AGN 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1045 0
29 NGC 5643 Sy2 14 32 40.778 -44 10 28.60   11.03 13.60 9.92 10.6 ~ 507 0
30 Mrk 477 Sy2 14 40 38.0960806920 +53 30 15.961505184   16.05 15.03     ~ 296 1
31 NAME Super Antennae Sy2 19 31 21.4272801984 -72 39 21.442847832   17.39 16.37 14.65   ~ 284 2
32 LEDA 166692 Sy2 20 48 17.2470227976 +19 36 55.956994560   13.93       ~ 71 0
33 IC 5063 Sy2 20 52 02.329 -57 04 07.60   12.92 13.60 11.30   ~ 596 1
34 NGC 7130 AGN 21 48 19.5412287192 -34 57 04.492024884   12.86 13.87 11.57   ~ 416 0
35 NGC 7172 Sy2 22 02 01.897 -31 52 11.60   12.72 13.61 11.15   ~ 495 1
36 LEDA 70560 Sy2 23 08 33.9537309816 +05 21 29.751752412           ~ 140 0
37 NGC 7496 AGN 23 09 47.2876854912 -43 25 40.279652796   11.92 13.90 10.95 11.5 ~ 246 1
38 NGC 7582 GiP 23 18 23.621 -42 22 14.06 11.62 10.92 10.62     ~ 855 2
39 NGC 7590 GiP 23 18 54.7949760192 -42 14 20.515300476   12.12 13.76 11.06 11.8 ~ 268 1
40 NGC 7674 Sy2 23 27 56.6973043968 +08 46 44.253707772 13.84 13.92 13.23 12.64   ~ 665 4

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2022.05.23-14:17:52

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