2013ApJS..204...23V

Query : 2013ApJS..204...23V

2013ApJS..204...23V - Astrophys. J., Suppl. Ser., 204, 23 (2013/February-0)

Nuclear infrared spectral energy distribution of type II active galactic nuclei.

VIDELA L., LIRA P., ANDREWS H., ALONSO-HERRERO A., ALEXANDER D.M. and WARD M.

Abstract (from CDS):

We present near- and mid-IR observations of a sample of Seyfert II galaxies drawn from the 12 µm Galaxy sample. The sample was observed in the J, H, K, L, M and N bands. Galaxy surface brightness profiles are modeled using nuclear, bulge, bar (when necessary), and disk components. To check the reliability of our findings, the procedure was tested using Spitzer observations of M 31. Nuclear spectral energy distributions (SEDs) are determined for 34 objects, and optical spectra are presented for 38, including analysis of their stellar populations using the STARLIGHT spectral synthesis code. Emission line diagnostic diagrams are used to discriminate between genuine active galactic nuclei (AGNs) and H II nuclei. Combining our observations with those found in the literature, we have a total of 40 SEDs. It is found that about 40% of the SEDs are characterized by an upturn in the near-IR, which we have quantified as a NIR slope α < 1 for an SED characterized as λfλ∝λα. The three objects with an H II nucleus and two Seyfert nuclei with strong contamination from a circumnuclear also show an upturn. For genuine AGNs, this component could be explained as emission from the accretion disk, a jet, or from a very hot dust component leaking from the central region through a clumpy obscuring structure. The presence of a very compact nuclear starburst as the origin for this NIR excess emission is not favored by our spectroscopic data for these objects.

Abstract Copyright: ∼

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

Simbad objects: 57

goto Full paper

goto View the references in ADS

Number of rows : 57
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 NGC 17 Sy2 00 11 06.612 -12 06 28.33   14.14 13.52     ~ 369 1
2 2MASX J00215355-7910077 Sy2 00 21 53.5554103848 -79 10 08.025602016   17.33 16.3 15.19   ~ 82 0
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
4 IRAS 00521-7054 Sy2 00 53 56.2229333640 -70 38 04.243791912 17.83 17.22 16.2 16.14 14.55 ~ 109 0
5 ESO 541-12 Sy2 01 02 17.3718161376 -19 40 08.607886860   15.40 16.50 14.08   ~ 62 0
6 NGC 424 Sy1 01 11 27.6385025496 -38 05 00.421096524   13.76 14.12 12.38 12.8 ~ 346 1
7 ICRF J015002.6-072548 Sy1 01 50 02.6975795592 -07 25 48.453672360   16.86 15.62 15.62   ~ 162 1
8 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
9 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
10 NGC 1125 Sy2 02 51 40.44 -16 39 02.4   13.98 13.13 12.48   ~ 158 1
11 NGC 1143 IG 02 55 09.7142741256 -00 10 40.248085584   13.2       ~ 154 1
12 NGC 1142 Sy2 02 55 12.2311509144 -00 11 00.807149472   15.42 14.41     ~ 350 1
13 MCG-02-08-039 Sy1 03 00 30.6274872888 -11 24 57.031067052   14 14.3 13.45   ~ 110 0
14 NGC 1194 Sy2 03 03 49.1124029328 -01 06 13.415103900   15.29 14.18     ~ 307 0
15 NGC 1241 Sy2 03 11 14.6195456232 -08 55 18.775959888 12.07 12.84 11.99 12.7 12.5 ~ 221 2
16 NGC 1320 Sy2 03 24 48.6886857672 -03 02 32.121533436   14.0 14.00     ~ 317 0
17 NGC 1386 Sy1 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 553 1
18 LEDA 13422 Sy2 03 38 33.5520704184 -16 32 18.242798532   17.67 16.39 17.04   ~ 59 0
19 IRAS 04385-0828 Sy1 04 40 54.9608896320 -08 22 22.126721232   15.71 14.5     ~ 128 0
20 NGC 1667 Sy2 04 48 37.1804579280 -06 19 11.824427712   13.66 12.86 11.72   ~ 384 2
21 ESO 33-2 Sy2 04 55 58.93368 -75 32 28.2336   14.61 14.60 13.39   ~ 177 1
22 IRAS 05189-2524 Sy2 05 21 01.3994605776 -25 21 45.321827832   15.47 14.75     ~ 545 0
23 ESO 253-3 Sy2 05 25 18.058 -46 00 21.36 15.95 15.10 14.77 13.95   ~ 80 0
24 Z 7-49 Sy1 09 52 19.168 -01 36 44.10   14.99 14.39 11.2   ~ 348 1
25 Z 11-76 Sy2 11 21 12.261 -02 59 03.00   15.0       ~ 132 0
26 NGC 3660 Sy2 11 23 32.2781260536 -08 39 30.730097016   15.34 14.45     ~ 185 0
27 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 1106 1
28 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
29 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
30 M 88 Sy2 12 31 59.1525062448 +14 25 13.148971824   14.33 13.18     ~ 843 1
31 IC 3639 Sy1 12 40 52.8344884344 -36 45 21.057011172   13.01 13.50 11.87 12.7 ~ 262 1
32 NGC 4941 Sy2 13 04 13.1036380320 -05 33 05.752803672   13.18 12.23 10.74   ~ 410 0
33 NGC 4968 Sy2 13 07 05.976 -23 40 37.34   13.78 14.79 12.46 12.78 ~ 198 2
34 MCG-03-34-064 Sy2 13 22 24.4583154360 -16 43 42.481822404   14   13.16   ~ 345 2
35 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 500 1
36 LEDA 47911 G 13 35 18.7 -42 32 46   18       ~ 6 0
37 Mrk 463W Sy2 13 56 02.620 +18 22 17.76           ~ 32 0
38 Mrk 463E Sy1 13 56 02.88573 +18 22 18.8440   15.01 14.22     ~ 158 1
39 Z 103-14 Sy2 13 56 02.89833 +18 22 18.2982   14.8 14.22     ~ 413 2
40 NGC 5506 Bla 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1173 1
41 NGC 5953 Sy2 15 34 32.40240 +15 11 37.7990   13.23 12.45     ~ 389 1
42 NGC 5995 Sy2 15 48 24.9463652328 -13 45 27.241966908   14.66 13.69 13.17   ~ 180 1
43 IRAS 15480-0344 Sy1 15 50 41.4972847704 -03 53 17.990582640   16.20 15.1 14.83   ~ 105 1
44 NAME Super Antennae Sy2 19 31 21.4272801984 -72 39 21.442847832   17.39 16.37 14.65   ~ 318 3
45 NGC 6810 Sy2 19 43 34.4178888528 -58 39 20.192400540   12.34 11.22 10.71   ~ 163 1
46 NGC 6890 Sy2 20 18 18.1057797216 -44 48 24.750633168   13.06 14.02 11.57   ~ 171 0
47 IC 5063 Bla 20 52 02.15 -57 04 06.7   12.92 13.60 11.30   ~ 710 1
48 Z 401-1 Sy2 21 07 44.1 +03 52 31           ~ 92 0
49 Mrk 897 Sy2 21 07 45.894 +03 52 39.50   15.39 14.76     ~ 107 1
50 NGC 7130 Sy2 21 48 19.5412287192 -34 57 04.492024884   12.86 13.87 11.57   ~ 483 1
51 NGC 7172 Sy2 22 02 01.897 -31 52 11.60   12.72 13.61 11.15 25.10 ~ 572 2
52 MCG-03-58-007 Sy1 22 49 37.1473817784 -19 16 26.364266220   15.62 14.79     ~ 120 1
53 NGC 7496 Sy2 23 09 47.2876854912 -43 25 40.279652796   11.92 13.90 10.95 11.5 ~ 350 1
54 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3
55 NGC 7590 Sy1 23 18 54.7949760192 -42 14 20.515300476   12.12 13.76 11.06 11.8 ~ 290 1
56 NGC 7674 Sy1 23 27 56.6973043968 +08 46 44.253707772 13.84 13.92 13.23 12.64   ~ 738 2
57 Z 381-51 AGN 23 48 41.7121321176 +02 14 23.114081004   15.3 15.40     ~ 69 0

To bookmark this query, right click on this link: simbad:objects in 2013ApJS..204...23V and select 'bookmark this link' or equivalent in the popup menu