1996A&AS..120..463M

Query : 1996A&AS..120..463M

1996A&AS..120..463M - Astron. Astrophys., Suppl. Ser., 120, 463-488 (1996/December-2)

A survey of the ISM in early-type galaxies. I. The ionized gas.

MACCHETTO F., PASTORIZA M., CAON N., SPARKS W.B., GIAVALISCO M., BENDER R. and CAPACCIOLI M.

Abstract (from CDS):

We present results of a CCD optical imaging survey of the ionized gas in 73 luminous elliptical and lenticular galaxies, selected from the RC3 catalog to represent a broad variety of X-ray, radio, infrared and kinematical properties. For each galaxy we have used broad-band R images and narrow-band images centered at the Hα and [NII] emission lines to derive the luminosity and distribution of the ionized gas. We found that a large fraction of E (72%) and S0 (85%) galaxies in our sample contain ionized gas. The gas morphology appears to be rather smooth for most galaxies; however ∼12% of the sample galaxies show a very extended filamentary structure. According to the morphology and size of the gas distribution, the galaxies have been classified into three broad groups, named small disk (SD), regular extended (RE) and filamentary structure (F). The mean diameter of the emitting region ranges between 1 and 10kpc; the derived mass of the ionized gas ranges between 103 and 105 solar masses. A significant correlation between Hα+[NII] and X-ray luminosities is found for those galaxies (27% of the sample) for which we have detected ionized gas and are also listed as X-ray sources. However, there are relatively strong X-ray emitting galaxies for which we have not detected Hα+[NII] emission and objects which show emission-lines but are not listed either in the EINSTEIN or in the ROSAT databases. The distribution of datapoint and upper limits in this diagram suggests that galaxies with warm gas are also X-ray emitters, while there are X-ray emitters without measurable Hα+[NII] emission. Similar characteristics are present in the correlation between the infrared luminosity in the 12 µm band and LHα+[NII]; correlations with other infrared wavelengths are weaker. A strong correlation was also found between the Hα+[NII] luminosity and the luminosity in the B band inside the region occupied by the line-emitting gas. We use these correlations to discuss the possible mechanisms responsible for the gas ionization and excitation, analyzing in particular the role of the post-AGB stars and the thermal conduction from the X-ray halo in providing the necessary source of ionization.

Abstract Copyright: ∼

Journal keyword(s): galaxies: elliptical and lenticular - galaxies: ISM - galaxies: structure

Simbad objects: 75

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Number of rows : 75
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 524 GiP 01 24 47.7429545736 +09 32 20.089023900   11.5       ~ 494 1
2 NGC 533 rG 01 25 31.4074984248 +01 45 33.236656812   13.1 14.11     ~ 237 1
3 NGC 584 Sy2 01 31 20.7231919800 -06 52 04.770287472 11.93 11.44 10.48     ~ 417 2
4 NGC 596 GiG 01 32 51.9046959816 -07 01 53.646821220   11.5       ~ 247 0
5 NGC 636 EmG 01 39 06.5293238064 -07 30 45.475975296   12.5       ~ 196 0
6 BAX 028.2522-13.7387 ClG 01 53 00.40 -13 44 18.0           ~ 389 0
7 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
8 NGC 741 rG 01 56 23.2 +05 37 35   13.2       ~ 309 2
9 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
10 NGC 1172 GiP 03 01 36.0605047968 -14 50 11.499147312   12.87       ~ 155 0
11 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
12 NGC 1400 EmG 03 39 30.851 -18 41 17.25 12.48 12.01 10.96 10.45   ~ 309 1
13 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
14 NGC 1453 EmG 03 46 27.2307890592 -03 58 07.831476768   13   11.30   ~ 189 0
15 NGC 1600 rG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 409 1
16 NGC 2865 GiG 09 23 30.205 -23 09 41.37   12.39 11.43 11.06   ~ 244 0
17 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 1067 2
18 NGC 3268 EmG 10 30 00.6490581240 -35 19 31.519591284   12.57 11.77 10.68   ~ 163 0
19 NGC 3311 EmG 10 36 42.821 -27 31 42.02   11.93 10.93 10.00 9.67 ~ 310 2
20 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
21 NGC 3489 GiG 11 00 18.5483994744 +13 54 04.206202668 11.46 11.12 10.29     ~ 429 1
22 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
23 NGC 4105 Sy2 12 06 40.767 -29 45 36.64   11.35 12.52 9.53   ~ 131 0
24 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
25 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 671 1
26 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
27 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
28 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
29 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
30 NGC 4782 rG 12 54 35.698 -12 34 06.92   13 12.75 13.11   ~ 158 2
31 NGC 4936 Sy2 13 04 17.091 -30 31 34.71   11.76 12.23 10.13 10.9 ~ 115 0
32 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
33 NGC 5077 rG 13 19 31.66962921 -12 39 25.0765176   13.87 12.85 11.30   ~ 312 1
34 NGC 5090 rG 13 21 12.84471811 -43 42 16.8452073   12.59 11.51 10.84   ~ 208 1
35 NGC 5102 EmG 13 21 57.6100832352 -36 37 48.395156160   9.74 9.65 8.47 10.2 ~ 389 1
36 IC 4296 rG 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 520 2
37 NGC 5419 rG 14 03 38.7225244848 -33 58 41.881842120   11.77 11.33 10.21 14.44 ~ 208 3
38 NGC 5532 LIN 14 16 52.9370483073 +10 48 26.616631120   13.3 12.59     ~ 364 2
39 NGC 5812 EmG 15 00 55.708 -07 27 26.33   12   11.19   ~ 164 0
40 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
41 NGC 5831 GiG 15 04 07.0002600408 +01 13 11.705607012   13.1   11.19   ~ 304 0
42 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
43 NGC 5864 GiG 15 09 33.5680310184 +03 03 09.980709588   12.9   11.18   ~ 107 0
44 NGC 5898 EmG 15 18 13.5683042256 -24 05 52.428845076   12.37 11.52 10.71   ~ 155 1
45 NGC 5903 GiG 15 18 36.529 -24 04 06.94   12.11 11.48 10.73   ~ 145 1
46 NGC 5920 LIN 15 21 51.870 +07 42 31.97   15.5       ~ 137 1
47 NGC 6034 Sy2 16 03 32.08333486 +17 11 55.3098953   15.2       ~ 105 1
48 NGC 6305 Sy2 17 18 00.9154240056 -59 10 19.593661008   13.02 12.61 11.48   ~ 50 0
49 NGC 6407 GiG 17 44 57.664 -60 44 23.28   12.88   11.76   ~ 57 0
50 NGC 6483 AG? 17 59 30.7964765736 -63 40 07.648055040   13.22   11.68   ~ 49 0
51 IC 4797 Sy2 18 56 29.656 -54 18 21.04   12.32 11.27 10.79   ~ 96 0
52 NGC 6721 EmG 19 00 50.815 -57 45 33.77   13.23 12.04 11.48   ~ 72 0
53 NGC 6758 GiG 19 13 52.3655323032 -56 18 36.095195484   12.53 11.56 10.83   ~ 83 0
54 NGC 6776 AG? 19 25 19.1485272024 -63 51 36.633840408   13.19 11.99 11.59   ~ 88 0
55 IC 4889 EmG 19 45 15.168 -54 20 38.91   12.25 11.08 10.73 11.5 ~ 140 0
56 NGC 6851 EmG 20 03 34.3587786984 -48 17 04.350059196   12.83 11.67 11.31   ~ 96 0
57 NGC 6861 EmG 20 07 19.482 -48 22 12.94   12.01 11.10 10.43   ~ 211 0
58 NGC 6868 Sy2 20 09 54.08207 -48 22 46.2470   11.58 9.22 10.01 7.91 ~ 239 2
59 NGC 6875 EmG 20 13 12.5017892736 -46 09 41.636505744   12.90 11.78 11.41   ~ 65 0
60 NGC 6876 GiG 20 18 19.146 -70 51 31.80   11.76 11.54 10.45   ~ 130 0
61 NGC 6909 AG? 20 27 38.9325072768 -47 01 37.164117144   12.76 11.88 11.52   ~ 112 0
62 NGC 6936 Sy2 20 35 56.3066829288 -25 16 47.618596200   13.83   12.16   ~ 32 1
63 NGC 6964 AG? 20 47 24.3022751472 +00 18 02.971919412 14.51 14.00 12.99     ~ 93 1
64 NGC 7014 Sy1 21 07 52.1518322976 -47 10 44.295026412   12.93 12.25 11.56   ~ 103 1
65 NGC 7029 Sy2 21 11 52.0283149344 -49 17 01.291280136   12.54 11.81 11.02   ~ 109 0
66 NGC 7041 EmG 21 16 32.3686820808 -48 21 48.781202760   12.16 11.11 10.68   ~ 91 0
67 NGC 7049 GiP 21 19 00.2856324192 -48 33 43.713475092   11.28 10.74 9.77   ~ 150 1
68 IC 5105 EmG 21 24 22.0100945880 -40 32 15.814424724   12.43 11.54 10.90   ~ 75 0
69 NGC 7196 AG? 22 05 54.8107967352 -50 07 09.868854000   12.43 11.54 10.89   ~ 122 0
70 NGC 7192 Sy2 22 06 50.1107894976 -64 18 58.721070096   12.21 11.21 10.77   ~ 148 0
71 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2
72 NGC 7562 GiP 23 15 57.4982037648 +06 41 15.227839176   13.0       ~ 173 0
73 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 472 0
74 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 438 1
75 NGC 7796 Sy1 23 58 59.7964010520 -55 27 29.983148100   12.36 11.30 10.82   ~ 121 0

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