2009AJ....137.3869C

Query : 2009AJ....137.3869C

2009AJ....137.3869C - Astron. J., 137, 3869-3883 (2009/April-0)

A search for radio supernova remnants in four irregular galaxies.

CHOMIUK L. and WILCOTS E.M.

Abstract (from CDS):

We survey four nearby irregular galaxies for radio supernova remnants (SNRs) using deep (1σ ∼ 20 µJy), high-resolution (∼20 pc) Very Large Array continuum data at 20, 6, and 3.6 cm. We identify discrete sources in these galaxies and use radio spectral indices and Hα images to categorize them as SNRs, H II regions, or background radio galaxies. Our classifications are generally in good agreement with the literature. We identify a total of 43 SNR candidates: 23 in NGC 1569, seven in NGC 4214, five in NGC 2366, and eight in NGC 4449. Only one SNR–the well-studied object J1228+441 in NGC 4449–is more luminous at 20 cm than Cas A. By comparing the total thermal flux density in each galaxy with that localized in H II regions, we conclude that a significant fraction must be in a diffuse component or in low-luminosity H II regions.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual (NGC 1569, NGC 2366, NGC 4214, NGC 4449) - radio continuum: galaxies - supernova remnants

VizieR on-line data: <Available at CDS (J/AJ/137/3869): table4.dat table5.dat table6.dat table7.dat>

Nomenclature: Table 4: [CW2009] N1569-NN (Nos 01-46). Table 5: [CW2009] N4214-NN (Nos 01-29). Table 6: [CW2009] N2366-NN (Nos 01-24). Table 7: [CW2009] N4449-NN (Nos 01-30).

Simbad objects: 147

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Number of rows : 147
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 136 OpC 00 31 35.1 +61 30 27           ~ 43 0
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
4 [CW2009] N1569-01 Rad 04 30 01.50 +64 52 53.3           ~ 1 0
5 [CW2009] N1569-02 Rad 04 30 26.32 +64 48 33.4           ~ 1 0
6 [CW2009] N1569-03 Rad 04 30 40.75 +64 51 22.6           ~ 1 0
7 [CW2009] N1569-04 SNR 04 30 44.35 +64 51 20.1           ~ 4 0
8 [CW2009] N1569-05 SNR 04 30 45.32 +64 51 14.9           ~ 3 0
9 [CW2009] N1569-06 SNR 04 30 45.60 +64 51 15.8           ~ 3 0
10 [CW2009] N1569-07 SNR 04 30 45.75 +64 51 09.6           ~ 3 0
11 [CW2009] N1569-08 SNR 04 30 45.79 +64 50 58.2           ~ 3 0
12 [CW2009] N1569-09 SNR 04 30 46.03 +64 51 08.0           ~ 3 0
13 [CW2009] N1569-10 HII 04 30 46.28 +64 51 09.0           ~ 1 0
14 [LP2006] N1569-S010 SR? 04 30 46.31 +64 51 09.0           ~ 2 0
15 [CW2009] N1569-11 HXB 04 30 46.54 +64 50 53.6           ~ 4 0
16 [CW2009] N1569-12 SNR 04 30 46.83 +64 50 37.8           ~ 3 0
17 [CW2009] N1569-13 HII 04 30 46.93 +64 51 00.8           ~ 1 0
18 [CW2009] N1569-14 SNR 04 30 46.97 +64 51 07.2           ~ 3 0
19 [LP2006] N1569-S009 SR? 04 30 47.04 +64 51 07.2           ~ 2 0
20 [CW2009] N1569-15 HII 04 30 47.15 +64 51 04.7           ~ 1 0
21 [CW2009] N1569-16 SNR 04 30 47.48 +64 50 55.7           ~ 4 0
22 [CW2009] N1569-17 SNR 04 30 47.73 +64 51 09.7           ~ 5 0
23 [CW2009] N1569-18 SNR 04 30 47.91 +64 50 50.3           ~ 4 0
24 [LP2006] N1569-S007 SR? 04 30 47.98 +64 50 55.1           ~ 2 0
25 [CW2009] N1569-19 HII 04 30 47.99 +64 50 56.5           ~ 1 0
26 [CW2009] N1569-20 SNR 04 30 48.20 +64 50 54.7           ~ 4 0
27 [CW2009] N1569-21 SNR 04 30 48.42 +64 50 53.6           ~ 4 0
28 [CW2009] N1569-22 HII 04 30 48.44 +64 51 05.3           ~ 1 0
29 [CW2009] N1569-23 SNR 04 30 48.48 +64 51 08.5           ~ 4 0
30 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
31 [CW2009] N1569-24 HII 04 30 49.19 +64 51 04.6           ~ 1 0
32 [CW2009] N1569-25 HII 04 30 49.35 +64 51 07.2           ~ 1 0
33 [CW2009] N1569-26 HII 04 30 49.36 +64 51 09.2           ~ 1 0
34 [CW2009] N1569-27 SNR 04 30 49.50 +64 50 59.4           ~ 4 0
35 [LP2006] N1569-S008 SR? 04 30 49.53 +64 50 58.8           ~ 2 0
36 [CW2009] N1569-28 SNR 04 30 51.55 +64 50 51.0           ~ 3 0
37 [LP2006] N1569-S002 SR? 04 30 51.59 +64 50 50.1           ~ 2 0
38 [CW2009] N1569-29 HII 04 30 51.77 +64 50 49.2           ~ 1 0
39 [CW2009] N1569-30 SNR 04 30 52.04 +64 50 44.4           ~ 3 0
40 [CW2009] N1569-31 HII 04 30 52.15 +64 50 47.8           ~ 1 0
41 [CW2009] N1569-32 SNR 04 30 52.19 +64 50 54.8           ~ 4 0
42 [CW2009] N1569-33 SNR 04 30 52.42 +64 50 43.2           ~ 3 0
43 [CW2009] N1569-34 SNR 04 30 52.46 +64 50 51.6           ~ 3 0
44 [CW2009] N1569-35 SNR 04 30 52.96 +64 50 48.8           ~ 3 0
45 [CW2009] N1569-36 SNR 04 30 53.36 +64 50 44.5           ~ 3 0
46 [CW2009] N1569-37 SNR 04 30 53.53 +64 50 47.7           ~ 3 0
47 [LP2006] N1569-S001 SR? 04 30 54.05 +64 50 43.0           ~ 2 0
48 [CW2009] N1569-38 SNR 04 30 54.08 +64 50 43.5           ~ 6 0
49 [CW2009] N1569-39 HII 04 30 54.38 +64 50 33.5           ~ 1 0
50 [CW2009] N1569-40 HII 04 30 54.43 +64 50 46.3           ~ 1 0
51 [CW2009] N1569-41 Rad 04 30 55.14 +64 50 17.8           ~ 1 0
52 [CW2009] N1569-42 Rad 04 30 58.00 +64 49 12.2           ~ 1 0
53 [CW2009] N1569-43 Rad 04 31 03.74 +64 54 28.6           ~ 1 0
54 [CW2009] N1569-44 Rad 04 31 04.40 +64 55 36.7           ~ 1 0
55 [CW2009] N1569-45 Rad 04 31 13.04 +64 52 29.3           ~ 1 0
56 [CW2009] N1569-46 Rad 04 31 16.05 +64 49 09.4           ~ 1 0
57 [CW2009] N2366-01 Rad 07 27 48.04 +69 14 48.7           ~ 1 0
58 [CW2009] N2366-02 Rad 07 28 00.71 +69 08 40.5           ~ 1 0
59 [CW2009] N2366-03 Rad 07 28 05.57 +69 12 35.3           ~ 1 0
60 [CW2009] N2366-04 Rad 07 28 06.29 +69 08 19.7           ~ 1 0
61 [CW2009] N2366-05 Rad 07 28 15.73 +69 12 01.7           ~ 1 0
62 [CW2009] N2366-06 Rad 07 28 24.16 +69 18 21.7           ~ 1 0
63 NGC 2363 AG? 07 28 29.59 +69 11 34.3   15.5       ~ 262 1
64 [CW2009] N2366-07 SNR 07 28 30.41 +69 11 33.8           ~ 2 0
65 [CW2009] N2366-08 Rad 07 28 34.59 +69 17 24.6           ~ 1 0
66 [CW2009] N2366-09 Rad 07 28 36.27 +69 11 10.9           ~ 1 0
67 [CW2009] N2366-10 HII 07 28 42.58 +69 11 22.0           ~ 7 0
68 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 588 3
69 [CW2009] N2366-11 HII 07 28 43.71 +69 11 22.4           ~ 5 0
70 [CW2009] N2366-12 SNR 07 28 45.26 +69 12 19.8           ~ 2 0
71 [CW2009] N2366-13 HII 07 28 45.69 +69 11 25.8           ~ 2 0
72 [CW2009] N2366-14 Rad 07 28 51.75 +69 11 09.9           ~ 1 0
73 [CW2009] N2366-15 SNR 07 28 52.10 +69 12 54.4           ~ 2 0
74 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
75 [CW2009] N2366-16 SNR 07 28 54.57 +69 11 12.7           ~ 2 0
76 [CW2009] N2366-17 Rad 07 28 55.98 +69 14 16.6           ~ 1 0
77 [CW2009] N2366-18 SNR 07 28 57.67 +69 13 41.0           ~ 2 0
78 [CW2009] N2366-19 Rad 07 28 58.00 +69 11 33.9           ~ 1 0
79 [CW2009] N2366-20 Rad 07 29 13.46 +69 10 16.7           ~ 1 0
80 [CW2009] N2366-21 Rad 07 29 17.10 +69 09 05.9           ~ 1 0
81 [CW2009] N2366-22 Rad 07 29 26.78 +69 12 28.2           ~ 1 0
82 [CW2009] N2366-23 Rad 07 29 28.80 +69 16 56.0           ~ 1 0
83 [CW2009] N2366-24 Rad 07 29 32.60 +69 11 53.7           ~ 1 0
84 [CW2009] N4214-01 Rad 12 15 28.66 +36 23 02.2           ~ 1 0
85 [CW2009] N4214-02 SNR 12 15 34.74 +36 20 17.1           ~ 3 0
86 [BWE2015] NGC 4214 42 SNR 12 15 38.18 +36 19 44.9           ~ 5 0
87 [CW2009] N4214-04 SNR 12 15 38.98 +36 18 59.1           ~ 4 0
88 [CW2009] N4214-05 HII 12 15 39.04 +36 19 37.1           ~ 1 0
89 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
90 [CW2009] N4214-06 HII 12 15 39.29 +36 19 33.7           ~ 1 0
91 [CW2009] N4214-07 HII 12 15 39.55 +36 19 32.7           ~ 1 0
92 [CW2009] N4214-08 SNR 12 15 39.78 +36 19 34.3           ~ 3 0
93 [BWE2015] NGC 4214 116 SNR 12 15 39.99 +36 18 41.1           ~ 5 0
94 [BWE2015] NGC 4214 59 HXB 12 15 40.02 +36 19 35.5           ~ 6 0
95 [CW2009] N4214-11 SNR 12 15 40.12 +36 19 30.7           ~ 3 0
96 [CW2009] N4214-12 SNR 12 15 40.55 +36 19 31.5           ~ 3 0
97 [CW2009] N4214-13 HII 12 15 40.56 +36 19 14.1           ~ 2 0
98 [CW2009] N4214-14 HII 12 15 40.73 +36 19 09.9           ~ 2 0
99 [CW2009] N4214-15 HII 12 15 40.76 +36 19 04.5           ~ 2 0
100 [CW2009] N4214-16 HII 12 15 40.98 +36 19 04.3           ~ 2 0
101 [CW2009] N4214-17 HII 12 15 41.36 +36 21 14.1           ~ 2 0
102 [CW2009] N4214-18 SNR 12 15 41.64 +36 19 09.7           ~ 3 0
103 [CW2009] N4214-19 HXB 12 15 41.87 +36 19 15.3           ~ 6 0
104 [CW2009] N4214-20 HII 12 15 42.52 +36 19 47.9           ~ 3 0
105 [CW2009] N4214-21 Rad 12 15 44.65 +36 21 20.1           ~ 1 0
106 [CW2009] N4214-22 Rad 12 15 44.98 +36 17 56.3           ~ 1 0
107 [CW2009] N4214-23 HII 12 15 45.64 +36 19 42.1           ~ 3 0
108 [CW2009] N4214-24 Rad 12 15 46.87 +36 18 55.5           ~ 1 0
109 [CW2009] N4214-25 Rad 12 15 48.56 +36 21 55.7           ~ 1 0
110 [CW2009] N4214-26 Rad 12 15 49.24 +36 21 45.8           ~ 1 0
111 [CW2009] N4214-27 Rad 12 15 49.68 +36 18 47.7           ~ 1 0
112 [CW2009] N4214-28 Rad 12 15 51.15 +36 18 45.0           ~ 1 0
113 [CW2009] N4214-29 Rad 12 15 57.18 +36 18 30.0           ~ 1 0
114 [CW2009] N4449-01 Rad 12 27 56.35 +44 03 06.1           ~ 1 0
115 [CW2009] N4449-02 Rad 12 28 00.39 +44 07 52.9           ~ 1 0
116 [CW2009] N4449-03 Rad 12 28 06.96 +44 08 18.2           ~ 2 0
117 [CW2009] N4449-04 Rad 12 28 06.98 +44 08 20.0           ~ 2 0
118 [CW2009] N4449-05 Rad 12 28 07.05 +44 08 16.8           ~ 1 0
119 [CW2009] N4449-06 HII 12 28 09.37 +44 05 20.6           ~ 1 0
120 [CW2009] N4449-07 SNR 12 28 09.67 +44 05 19.8           ~ 3 0
121 [CW2009] N4449-08 Rad 12 28 09.69 +44 05 43.8           ~ 1 0
122 [CW2009] N4449-09 HII 12 28 10.04 +44 05 25.0           ~ 1 0
123 [CW2009] N4449-10 HII 12 28 10.76 +44 05 34.2           ~ 1 0
124 NAME NGC 4449 SNR SNR 12 28 10.8 +44 06 41           ~ 40 0
125 [CW2009] N4449-11 SNR 12 28 10.87 +44 05 40.2           ~ 2 0
126 [CW2009] N4449-12 SNR 12 28 10.93 +44 06 48.8           ~ 4 0
127 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
128 [CW2009] N4449-13 HII 12 28 11.12 +44 05 38.0           ~ 1 0
129 [CW2009] N4449-14 SNR 12 28 11.47 +44 05 38.6           ~ 4 0
130 [CW2009] N4449-15 HII 12 28 11.49 +44 05 37.0           ~ 2 0
131 [CW2009] N4449-16 HII 12 28 12.63 +44 05 03.6           ~ 1 0
132 [CW2009] N4449-17 SNR 12 28 12.77 +44 06 12.2           ~ 2 0
133 [CW2009] N4449-18 HII 12 28 13.05 +44 05 43.4           ~ 2 0
134 [CW2009] N4449-19 SNR 12 28 13.07 +44 05 37.8           ~ 3 0
135 [CW2009] N4449-20 HII 12 28 13.82 +44 07 10.8           ~ 1 0
136 [CW2009] N4449-21 Rad 12 28 14.66 +44 07 30.6           ~ 1 0
137 [CW2009] N4449-22 Rad 12 28 14.91 +44 06 24.0           ~ 2 0
138 [CW2009] N4449-23 HII 12 28 15.98 +44 06 29.5           ~ 2 0
139 [CW2009] N4449-24 SNR 12 28 16.13 +44 06 43.3           ~ 2 0
140 [CW2009] N4449-25 HII 12 28 17.67 +44 06 29.7           ~ 1 0
141 [CW2009] N4449-26 SNR 12 28 19.23 +44 06 55.9           ~ 4 0
142 [CW2009] N4449-27 Rad 12 28 19.45 +44 07 37.1           ~ 2 0
143 [CW2009] N4449-28 Rad 12 28 23.69 +44 03 13.7           ~ 1 0
144 [CW2009] N4449-29 Rad 12 28 25.58 +44 04 38.5           ~ 1 0
145 [CW2009] N4449-30 Rad 12 28 25.90 +44 03 19.1           ~ 1 0
146 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
147 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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