2020MNRAS.491..889K

Query : 2020MNRAS.491..889K

2020MNRAS.491..889K - Mon. Not. R. Astron. Soc., 491, 889-902 (2020/January-1)

A diagnostic tool for the identification of supernova remnants.

KOPSACHEILI M., ZEZAS A. and LEONIDAKI I.

Abstract (from CDS):

We present new diagnostic tools for distinguishing supernova remnants (SNRs) from H II regions. Up to now, sources with flux ratio [S II]/H{α } higher than 0.4 have been considered as SNRs. Here, we present combinations of three or two line ratios as more effective tools for the separation of these two kinds of nebulae, depicting them as 3D surfaces or 2D lines. The diagnostics are based on photoionization and shock-excitation models (MAPPINGS III) analysed with support vector machine (SVM) models for classification. The line-ratio combination that gives the most efficient diagnostic is [O I]/H{α } - [O II]/H{β } - [O III]/H{β }. This method gives 98.95 per cent completeness in the SNR selection and 1.20 per cent contamination. We also define the [O I]/H{α } SNR selection criterion and measure its efficiency in comparison with other selection criteria.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): HII regions - ISM: supernova remnants

Simbad objects: 28

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Number of rows : 28
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
4 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
5 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 818 1
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
7 NGC 1232 EmG 03 09 45.514 -20 34 45.48   10.67 9.87 9.53 10.2 ~ 296 0
8 SH 2-212 HII 04 40 36.52 +50 27 44.3           ~ 102 2
9 NGC 1637 Sy2 04 41 28.1926876152 -02 51 28.667815488   11.4   11.0 11.3 ~ 444 0
10 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
11 SNR G180.0-01.7 SNR 05 39 00.000 +27 50 00.00           ~ 294 2
12 EM* MWC 137 Ae* 06 18 45.5220873216 +15 16 52.244494608 12.89 13.30 13.759 11.67 10.31 sgB[e]d 259 1
13 SH 2-283 HII 06 38 29 +00 42.3           ~ 49 0
14 NAME MONOCEROS NEB SNR 06 38 43 +06 30.2           ~ 264 0
15 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
16 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
17 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
18 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
19 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
20 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
21 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
22 NGC 5204 LSB 13 29 36.508 +58 25 07.43   11.84   11.37   ~ 494 0
23 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
24 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
25 NGC 5585 GiG 14 19 48.204 +56 43 44.58   11.73 11.216 11.12 10.123 ~ 455 0
26 SNR G065.2+05.7 SNR 19 33.0 +31 10           ~ 105 0
27 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
28 SH 2-128 HII 21 32 09.9 +55 52 53           ~ 173 1

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