2017ApJ...842..131S

Query : 2017ApJ...842..131S

2017ApJ...842..131S - Astrophys. J., 842, 131-131 (2017/June-3)

Chandra survey of nearby galaxies: a significant population of candidate central black holes in late-type galaxies.

SHE R., HO L.C. and FENG H.

Abstract (from CDS):

Based on the Chandra data archive as of 2016 March, we have identified 314 candidate active galactic nuclei in 719 galaxies located closer than 50 Mpc, among them late-type galaxies (Hubble types Sc and later) that previously had been classified from optical observations as containing star-forming (H II) nuclei. These late-type galaxies comprise a valuable subsample to search for low-mass ( 106M☉) central black holes. For the sample as a whole, the overall dependence of the fraction of active nuclei on galaxy type and nuclear spectral classification is consistent with previous results based on optical surveys. We detect 51 X-ray cores among the 163 H II nuclei and estimate that, very conservatively, ∼74% of them with luminosities above 1038 erg s–1 are not contaminated by X-ray binaries; the fraction increases to ∼92% for X-ray cores with a luminosity of 1039 erg s–1 or higher. This allows us to estimate a black hole occupation fraction of 21% in these late-type galaxies, many of which are bulgeless.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

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

Simbad objects: 56

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Number of rows : 56
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 45 Sy2 00 14 04.0072128696 -23 10 55.132646808 11.92 11.21 10.73 10.58 10.4 ~ 269 1
2 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
3 NGC 922 EmG 02 25 04.400 -24 47 17.46   12.54 12.21 11.84   ~ 161 1
4 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 818 1
5 NGC 1073 EmG 02 43 40.598 +01 22 33.13   11.3   11.3 11.8 ~ 335 0
6 NGC 1370 Sy1 03 35 14.5479914537 -20 22 25.502491766   13.44   12.25   ~ 59 0
7 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
8 NGC 1493 Sy2 03 57 27.4270810416 -46 12 38.513195316   11.88   11.01 11.6 ~ 149 0
9 NGC 1603 Sy2 04 31 49.9567979040 -05 05 39.982065972   15.5       ~ 45 0
10 NGC 1637 Sy2 04 41 28.1926876152 -02 51 28.667815488   11.4   11.0 11.3 ~ 444 0
11 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 756 3
12 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
13 NGC 2500 GiG 08 01 53.1717201720 +50 44 13.602483780 11.98 12.20 11.62 11.34 10.85 ~ 215 2
14 NGC 2748 GiG 09 13 43.03707 +76 28 31.2310   11.7       ~ 223 0
15 NGC 2782 Sy2 09 14 05.11967 +40 06 49.6800 12.29 12.30 11.63     ~ 494 3
16 NGC 2798 GiG 09 17 22.95407 +41 59 58.9560 13.03 13.04 12.32     ~ 338 3
17 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
18 NGC 2993 Sy1 09 45 48.325 -14 22 06.02 12.72 13.11 12.64 13.4 13.0 ~ 194 2
19 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
20 NGC 3180 GiG 10 18 16.985 +41 25 27.77   10.4       ~ 777 0
21 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
22 Z 266-55 AGN 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 381 1
23 NGC 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 809 1
24 NGC 3367 Sy1 10 46 34.9528432440 +13 45 03.081157488 11.89 12.05 11.50     ~ 285 1
25 NGC 3521 EmG 11 05 48.5680991376 -00 02 09.245076540 10.06 9.83 9.02 10.1 9.6 ~ 879 2
26 NGC 3665 GiG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 364 1
27 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 347 0
28 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
29 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2270 1
30 NGC 4102 Sy2 12 06 23.11513 +52 42 39.4160   11.8       ~ 449 1
31 NGC 4136 GiG 12 09 17.7035859024 +29 55 39.419783832   11.69       ~ 244 1
32 NGC 4194 rG 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 467 2
33 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 324 2
34 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
35 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 1084 1
36 NGC 4490 GiG 12 30 34.5 +41 38 26 10.03 10.22 9.79     ~ 616 3
37 NGC 4526 GiC 12 34 03.02853 +07 41 56.9040   10.6       ~ 707 0
38 NGC 4559 H2G 12 35 57.6402869976 +27 57 35.859278160   10.46 10.01     ~ 667 1
39 NGC 4561 GiG 12 36 08.137 +19 19 21.32   12.7       ~ 211 0
40 NGC 4625 SyG 12 41 52.7121819576 +41 16 26.115765780 12.74 12.92 12.35     ~ 383 2
41 NGC 4654 H2G 12 43 56.638 +13 07 34.86   11.8       ~ 600 1
42 NGC 4666 AGN 12 45 08.676 -00 27 42.88   11.7   11.5 10.7 ~ 421 1
43 NGC 4670 AG? 12 45 17.150 +27 07 31.76   12.6 12.90     ~ 271 0
44 NGC 4900 AGN 13 00 39.1193785512 +02 30 05.154593868   12.8       ~ 267 1
45 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
46 NGC 5102 EmG 13 21 57.6100832352 -36 37 48.395156160   9.74 9.65 8.47 10.2 ~ 389 1
47 NGC 5248 G 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 554 0
48 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
49 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
50 NGC 5483 EmG 14 10 25.0439323920 -43 19 28.682248872   11.86 11.38 10.62 11.4 ~ 81 0
51 NGC 5506 Bla 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1173 1
52 NGC 5775 GiG 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 460 2
53 NGC 6764 LIN 19 08 16.4036066688 +50 55 59.519979084   15.00 14.32     ~ 307 1
54 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
55 NGC 7320 GiG 22 36 03.4059680280 +33 56 53.623460220 13.12 13.23 12.63 12.38   ~ 204 3
56 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1

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