2010MNRAS.407.2475F

Query : 2010MNRAS.407.2475F

2010MNRAS.407.2475F - Mon. Not. R. Astron. Soc., 407, 2475-2500 (2010/October-1)

Ionized gas in E/S0 galaxies with dust lanes.

FINKELMAN I., BROSCH N., FUNES J.G., KNIAZEV A.Y. and VAISANEN P.

Abstract (from CDS):

We report the results of multicolour observations of 30 E/S0 galaxies with dust lanes. For each galaxy we obtained broad-band images and narrow-band images using interference filters isolating the Hα+[Nii] emission lines to derive the amount and morphology of dust and ionized gas. To improve the wavelength coverage we retrieved data from the Sloan Digital Sky Survey and Two Micron All Sky Survey and combined these with our data. Ionized gas is detected in 25 galaxies and shows in most cases a smooth morphology, although knots and filamentary structure are also observed in some objects. The extended gas distribution closely follows the dust structure, with a clear correlation between the mass of both components. An extinction law by the extragalactic dust in the dark lanes is derived and is used to estimate the dust content of the galaxies. The derived extinction law is used to correct the measured colours for intrinsic dust extinction and the data are fitted with a stellar population synthesis model. We find that the Hα emission and colours of most objects are consistent with the presence of an `old' stellar population (∼10Gyr) and a small fraction of a `young' population (∼ 10-100Myr). To check this we closely examine NGC5363, for which archival Spitzer/Infrared Array Camera and Galaxy Evolution Explorer data are available, as a representative dust-lane E/S0 galaxy of the sample.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): dust, extinction - galaxies: elliptical and lenticular, cD - galaxies: ISM

VizieR on-line data: <Available at CDS (J/MNRAS/407/2475): table1.dat table3.dat table4.dat table6.dat table7.dat>

CDS comments: In Table 4 : ESO 119-97 is a misprint for ESO 197-10

Simbad objects: 35

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Number of rows : 35
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 IC 1575 EmG 00 43 33.3694773000 -04 07 04.117322640   16.22 14.85 14.03 13.20 ~ 30 0
2 NGC 662 G 01 44 35.5013605752 +37 41 44.906453592 14.33 14.45 13.84 13.37 12.76 ~ 84 0
3 ESO 477-7 AG? 01 49 24.4342643856 -26 44 45.841031880   16.98 15.78 14.93 14.25 ~ 24 0
4 NGC 708 rG 01 52 46.482 +36 09 06.53 14.85 14.27 13.29 12.67 12.09 ~ 259 3
5 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
6 ESO 197-10 GiG 01 53 12.5769092544 -49 33 37.471124160   14.83 13.65 13.00 12.26 ~ 33 0
7 MCG-06-06-004 AG? 02 21 18.85 -34 19 07.7   16.00 14.83 14.13 13.43 ~ 16 0
8 NGC 1199 GiP 03 03 38.4220343160 -15 36 48.461862600   13.99 12.97 12.31 11.59 ~ 189 1
9 NGC 1297 EmG 03 19 14.2293540312 -19 06 00.356560524   14.97 13.98 13.43 12.71 ~ 90 0
10 ESO 118-19 EmG 04 18 59.5061584608 -58 15 27.108644688   16.55 15.51 14.83 14.07 ~ 25 0
11 NGC 2534 LIN 08 12 54.1596279408 +55 40 19.431713532 15.43 15.13 13.59     ~ 64 0
12 Z 208-12 LIN 08 31 25.8165825384 +40 57 22.171999284 18.36 17.60 16.29 15.47 14.49 ~ 20 0
13 NGC 2968 GiP 09 43 12.0262452312 +31 55 43.348902492 16.85 15.72 14.25 13.43 12.50 ~ 130 0
14 NGC 3108 GiG 10 02 29.0239265520 -31 40 38.785663704   12.48   11.03   ~ 69 0
15 Z 266-55 AGN 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 381 1
16 UGC 5814 IG 10 42 38.1365126688 +77 29 41.422855524 16.95 16.58 14.77     ~ 48 0
17 NGC 3656 G 11 23 38.6139450288 +53 50 31.100522064 14.50 14.25 12.75     ~ 148 2
18 NGC 3665 GiG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 364 1
19 NGC 4370 GiG 12 24 54.932 +07 26 40.44 16.09 15.59 13.84     ~ 148 0
20 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
21 NGC 4583 LIN 12 38 04.5291335832 +33 27 31.760293032 16.42 15.67 14.47 13.80 13.00 ~ 28 0
22 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
23 NGC 5173 GiP 13 28 25.2798599736 +46 35 29.890508928   13.10       ~ 153 1
24 NGC 5249 LIN 13 37 37.4916385920 +15 58 19.942753584 15.67 15.09 13.97 13.33 12.59 ~ 44 1
25 NGC 5311 Bla 13 48 56.0676753566 +39 59 06.644374016 14.77 14.35 13.30 12.76 12.03 ~ 83 1
26 NGC 5363 rG 13 56 07.24367 +05 15 16.9200 12.59 12.12 10.51     ~ 235 1
27 NGC 5485 LIN 14 07 11.3594809920 +55 00 06.084219996 14.34 13.82 12.22     ~ 267 0
28 NGC 6251 Bla 16 32 31.96989253 +82 32 16.3999044 15.24 14.66 12.89 7.62   ~ 772 1
29 NGC 6314 LIN 17 12 38.6880420672 +23 16 12.229407012 16.04 15.56 14.62 14.02 13.33 ~ 111 0
30 NGC 6702 AG? 18 46 57.5835209136 +45 42 20.305242180 15.30 14.73 13.05     ~ 148 0
31 NGC 7052 rG 21 18 33.0441963648 +26 26 49.174586196 15.52 14.85 13.09     ~ 348 1
32 NGC 7399 Sy2 22 52 39.2457385056 -09 16 04.170144540 15.92 15.47 14.50 13.79 13.08 ~ 26 0
33 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2
34 NGC 7432 LIN 22 58 01.9364078664 +13 08 04.209218340 16.68 15.95 14.81 14.17 13.16 ~ 41 1
35 NGC 7625 AG? 23 20 30.132 +17 13 32.16 13.31 13.23 11.98 11.25   ~ 280 0

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