2020MNRAS.496...36P

Query : 2020MNRAS.496...36P

2020MNRAS.496...36P - Mon. Not. R. Astron. Soc., 496, 36-48 (2020/July-3)

Diffuse LINER-type emission from extended disc regions of barred galaxies.

PERCIVAL S.M. and JAMES P.A.

Abstract (from CDS):

We present a spectroscopic analysis of the central disc regions of barred spiral galaxies, concentrating on the region that is swept by the bar but not including the bar itself (the 'star formation desert' or SFD region). New spectroscopy is presented for 34 galaxies, and the full sample analysed comprises 48 SBa-SBcd galaxies. These data confirm the full suppression of SF within the SFD regions of all but the latest type (SBcd) galaxies. However, diffuse [N II] and H α line emission is detected in all galaxies. The ubiquity and homogeneous properties of this emission from SBa to SBc galaxies favour post-asymptotic giant branch (p-AGB) stars as the source of this line excitation, rather than extreme blue horizontal branch stars. The emission-line ratios strongly exclude any contribution from recent SF, but are fully consistent with recent population synthesis modelling of p-AGB emission by other authors, and favour excitation dominated by ambient gas of approximately solar abundance, rather than ejecta from the AGB stars themselves. The line equivalent widths are also larger than those observed in many fully passive (e.g. elliptical) galaxies, which may also be a consequence of a greater ambient gas density in the SFD regions.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: active - galaxies: spiral - galaxies: stellar content - galaxies: structure

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 49

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Number of rows : 49
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 864 H2G 02 15 27.641 +06 00 09.43   12.00       ~ 220 1
2 NGC 1924 Sy2 05 28 01.9858692264 -05 18 38.250244728   13   12.24   ~ 37 0
3 NGC 2326 rG 07 08 11.0029274136 +50 40 54.835402584   14.3   11.88   ~ 28 0
4 NGC 2339 H2G 07 08 20.5343958360 +18 46 48.812128644   12.3       ~ 144 1
5 UGC 3685 GiG 07 09 05.9246956320 +61 35 44.062687680   13.1       ~ 53 0
6 NGC 2268 GiG 07 14 17.441 +84 22 56.18   12.1       ~ 143 0
7 Mrk 79 Sy1 07 42 32.8210670808 +49 48 34.783809768   14.74 14.27     ~ 714 1
8 UGC 4042 EmG 07 50 00.0213838080 +30 01 29.826813792   15.0       ~ 36 0
9 NGC 2487 LIN 07 58 20.4641458656 +25 08 57.241058784   13.28 12.23     ~ 120 0
10 NGC 2543 GiP 08 12 57.955 +36 15 16.23   12.70       ~ 165 1
11 NGC 2545 AGN 08 14 14.1553790376 +21 21 19.633909428   13.2       ~ 96 0
12 NGC 2523 AG? 08 15 00.1388949576 +73 34 44.302765908   12.4       ~ 88 0
13 NGC 2595 H2G 08 27 42.0263359560 +21 28 44.704954668   13.9       ~ 188 0
14 NGC 2604 GiP 08 33 23.057 +29 32 19.03   15.38 14.92     ~ 112 0
15 NGC 2712 Sy2 08 59 30.4854395352 +44 54 50.079495852   12.30       ~ 181 0
16 NGC 2746 LIN 09 05 59.4452800488 +35 22 38.580407616   14.40       ~ 60 0
17 NGC 3049 EmG 09 54 49.651 +09 16 17.90   13.04       ~ 329 1
18 NGC 3185 GiP 10 17 38.5650471192 +21 41 17.573817228   12.99 12.17 12.37   ~ 287 1
19 NGC 3346 EmG 10 43 38.9309584368 +14 52 18.437883960   12.80       ~ 183 0
20 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1123 2
21 NGC 3367 Sy1 10 46 34.9528432440 +13 45 03.081157488 11.89 12.05 11.50     ~ 276 1
22 UGC 5892 LIN 10 47 29.5612851720 +07 15 03.852011160   14.5       ~ 37 0
23 NGC 3374 rG 10 48 01.046 +43 11 11.61   14.6       ~ 29 0
24 NGC 3485 AGN 11 00 02.3705905728 +14 50 29.983054596   12.8       ~ 125 0
25 NGC 3507 GiP 11 03 25.3619733360 +18 08 07.607343732   11.4       ~ 185 0
26 NGC 3729 GiP 11 33 49.321 +53 07 31.79   12.2       ~ 206 1
27 NGC 3811 AG? 11 41 16.6113724536 +47 41 26.982320640   13.0       ~ 171 0
28 NGC 3963 GiP 11 54 58.7344804104 +58 29 37.010844528   12.2       ~ 126 0
29 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1694 0
30 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2167 1
31 NGC 4123 AGN 12 08 11.1187718376 +02 52 41.781736956   13.1       ~ 340 2
32 NGC 4210 LIN 12 15 15.8513778552 +65 59 07.052376192   13.4       ~ 135 0
33 NGC 4416 GiG 12 26 46.72487 +07 55 08.4500           ~ 169 0
34 NGC 4619 Sy2 12 41 44.5514475312 +35 03 45.964567044   13.5       ~ 114 0
35 NGC 4779 H2G 12 53 50.863 +09 42 35.71   13.5       ~ 134 0
36 NGC 4904 Sy1 13 00 58.667 -00 01 38.83   13.2       ~ 159 0
37 NGC 4999 Sy2 13 09 33.1299934344 +01 40 22.981443888   13.5       ~ 66 0
38 NGC 5164 GiP 13 27 11.9010146400 +55 29 13.794874800   14.6       ~ 34 0
39 NGC 5350 GiP 13 53 21.6232753416 +40 21 50.186768184   12.4   10.99   ~ 232 1
40 NGC 5375 LIN 13 56 56.0072063832 +29 09 51.653612304   12.78 12.08 11.65 11.65 ~ 125 1
41 NGC 5618 Sy2 14 27 11.8113143400 -02 15 44.631398916   13.6   13.082 13.4 ~ 39 0
42 IC 1010 LIN 14 27 20.3613848112 +01 01 33.133704060   14.8       ~ 44 0
43 NGC 5698 rG 14 37 14.6983101288 +38 27 15.374856348   14.0       ~ 65 0
44 NGC 5735 LIN 14 42 33.2401484496 +28 43 35.256709848   14.06 13.36     ~ 77 0
45 IC 1067 GiP 14 53 05.2360267944 +03 19 54.337726776   13.6       ~ 92 0
46 NGC 5806 AGN 15 00 00.4088018736 +01 53 28.779594792   12.40 11.70 10.94 11.6 ~ 284 1
47 NGC 5970 GiP 15 38 29.9475459984 +12 11 11.681818188   12.2       ~ 176 0
48 NGC 6004 GiG 15 50 22.7234510328 +18 56 21.333070932   13.4       ~ 98 0
49 UGC 10888 AG? 17 29 59.385 +60 21 00.41   14.27       ~ 41 1

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