1999A&A...350..765P

Query : 1999A&A...350..765P

1999A&A...350..765P - Astronomy and Astrophysics, volume 350765-776 (1999/10-3)

ISOPHOT observations of narrow line Seyfert 1 galaxies.

POLLETTA M. and COURVOISIER T.J.-L.

Abstract (from CDS):

Broad infrared spectra (7-200µm) of four NLSy1 galaxies, obtained with the imaging photo-polarimeter (ISOPHOT) on-board ISO, are presented. ISOPHOT data have been analyzed applying a (non standard) method that is described in details. The infrared spectra of the four selected NLSy1 galaxies have been analyzed in order to derive the distribution of luminosities, temperatures, opacities and sizes of the emitting dust. A comparison between infrared (α3,60) and optical emission line (Hα/Hβ and [OIII]/Hβ) properties suggests that NLSy1 galaxies suffer different degrees of dust absorption according to the inclination of the line of sight.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: - galaxies: photometry - galaxies: Seyfert - infrared: galaxies

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 - 2026 		#notes
1 Mrk 957 Sy1 00 41 53.4322147944 +40 21 17.647820820   15.94 15.14     ~ 109 1
2 Mrk 1502 Sy1 00 53 34.9331107632 +12 41 35.929269132   14.41 14.03     ~ 1242 1
3 Ton S 180 Sy1 00 57 20.2040816832 -22 22 56.575212564   14.60 14.34 15.23   ~ 320 0
4 Z 459-57 Sy1 01 27 32.5217343720 +19 10 43.839069600   14.89 14.22     ~ 333 0
5 HE 0226-4110 Sy1 02 28 15.2391681216 -40 57 14.762648232   17.68 15.2 16.22   ~ 144 1
6 LEDA 476029 Sy1 03 23 15.2955207864 -49 31 06.106276164   16.62 16.5 15.57   ~ 38 0
7 Mrk 142 Sy1 10 25 31.2786898344 +51 40 34.867889004   16.33 16.12     ~ 330 0
8 IC 2746 Sy2 11 21 47.1179115936 +11 44 18.909849876   15.38 14.93     ~ 234 0
9 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2270 1
10 PB 3894 Sy1 12 14 17.6738687784 +14 03 13.182723144   14.46 14.19     ~ 873 0
11 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 1106 1
12 LEDA 88835 Sy1 13 25 19.3805530608 -38 24 52.611680340   16.64 13.80 15.33 14.78 ~ 457 0
13 PG 1404+226 Sy1 14 06 21.8900886888 +22 23 46.515550056   16.62 16.42     ~ 254 0
14 Z 163-70 Sy1 14 31 04.7823008520 +28 17 14.127735336   15.36 14.68     ~ 118 0
15 Mrk 478 Sy1 14 42 07.4714418744 +35 26 22.938625500   14.91 14.58     ~ 567 1
16 Z 195-3 Sy1 15 59 09.6231720696 +35 01 47.561352852   15.69 15.06     ~ 346 0

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