2010MNRAS.407.1301B


Query : 2010MNRAS.407.1301B

2010MNRAS.407.1301B - Mon. Not. R. Astron. Soc., 407, 1301-1313 (2010/September-2)

On the size distribution of supernova remnants in the Magellanic clouds.

BADENES C., MAOZ D. and DRAINE B.T.

Abstract (from CDS):

The physical sizes of supernova remnants (SNRs) in a number of nearby galaxies follow an approximately linear cumulative distribution, contrary to what is expected for decelerating shock fronts. This phenomenon has been variously attributed to observational selection effects, or to a majority of SNRs being in `free expansion', with shocks propagating at a constant velocity into a tenuous ambient medium. We compile multi-wavelength observations of the 77 known SNRs in the Magellanic Clouds, and argue that they provide a fairly complete record of the SNe that have exploded over the last ∼ 20 kyr, with most of them now in the adiabatic, Sedov phase of their expansions. The roughly linear cumulative distribution of sizes (roughly uniform in a differential distribution) can be understood to result from the combination of the deceleration during this phase, a transition to a radiation-loss-dominated phase at a radius that depends on the local gas density and a probability distribution of densities in the interstellar medium varying approximately as ρ–1. This explanation is supported by the observed power-law distributions, with index ∼ -1, of three independent tracers of density: neutral hydrogen column density, Hα surface brightness and star formation rate based on resolved stellar populations. In this picture, the observed cut-off at a radius of 30 pc in the SNR size distribution is due to a minimum in the mean ambient gas density in the regions where supernovae (SNe) explode. We show that M33 has an SNR size distribution very similar to that of the Magellanic Clouds, suggesting these features, and their explanation, may be universal. In a companion paper, we use our sample of SNRs as an effective `SN survey' to calculate the SN rate and delay time distribution in the Magellanic Clouds. The hypothesis that most SNRs are in free expansion, rather than in the Sedov phase of their evolution, would result in SN rates that are in strong conflict with independent measurements, and with basic stellar evolution theory.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): supernovae: general - ISM: supernova remnants - galaxies: individual: LMC - galaxies: individual: SMC

Nomenclature: Table 1: [BMD2010] SNR JHHMM.m+DDMM N=77.

Simbad objects: 87

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Number of rows : 87
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME SMC B0039-7353 SNR 00 40 55 -73 36.9           ~ 28 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11877 1
3 SNR B0045-73.3 SNR 00 47 30.40 -73 06 01.1           ~ 14 0
4 SNR B0045-73.4 SNR 00 47 32.9 -73 07 46           ~ 48 1
5 [BMD2010] SNR J0047.7-7310 SNR 00 47 41.0 -73 09 30           ~ 2 0
6 DEM S 32 HII 00 47 43.9 -73 08 22           ~ 24 0
7 LHA 115-N 21 Em* 00 47 48 -73 17.4     14.8     ~ 26 0
8 LHA 115-N 19 HII 00 48 06 -73 08.7           ~ 63 0
9 IKT 4 SNR 00 48 19.6 -73 19 40           ~ 22 1
10 SNR B0047-73.5 SNR 00 49 07.75 -73 14 02.0           ~ 55 0
11 [MA93] 401 Em* 00 50 50.0342302080 -73 24 22.397147784   14.83 17     B0V 73 1
12 LIN 193 HXB 00 51 52.0250520000 -73 10 34.140066780 13.39 14.38 14.45 14.24 14.28 O9.5-B0V 69 0
13 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10309 1
14 NAME DEM S 68SE SNR 00 52 43.00 -72 37 06.0           ~ 42 0
15 SNR B0056-72.5 SNR 00 58 18.40 -72 17 22.7   20.58 20.70     ~ 50 1
16 2E 245 X 00 59 25.7 -72 10 11           ~ 28 1
17 NAME SMC B0058-7149 SNR 01 00 17.50 -71 32 49.1           ~ 32 0
18 [MA93] 1367 HXB 01 03 13.9173060552 -72 09 14.258500452   14.70 14.79 15.0   B0.5IV-V 89 2
19 MCSNR J0103-7247 SNR 01 03 29.2 -72 47 23   16.6       ~ 12 0
20 SNR B0102-72.3 SNR 01 04 01.2 -72 01 52           ~ 375 1
21 SNR B0103-72.6 SNR 01 05 05.6 -72 23 20           ~ 77 1
22 SNR B0104-72.2 SNR 01 05 21.7184178024 -72 08 42.548832456 14.41 15.53 15.75   16.01 O9V 33 1
23 LHA 115-N 78C Em* 01 05 41.156 -72 03 40.74   14.69 13.5     O7-O9 18 0
24 2E 273 XB* 01 06 19.49 -72 05 27.8     16.70     ~ 58 0
25 LHA 115-N 83C SNR 01 14 00.0 -73 17 08           ~ 68 0
26 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5523 1
27 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6367 1
28 [BMD2010] SNR J0448.4-6700 SNR 04 48 22.0 -66 59 52           ~ 3 0
29 [BMD2010] SNR J0449.3-6920 SNR 04 49 20.0 -69 20 20           ~ 4 0
30 SNR J045015-692212 Rad 04 50 07.8 -69 22 48           ~ 8 0
31 [BGS2006b] J0450-709 SNR 04 50 29.70 -70 50 25.7           ~ 4 0
32 [BMD2010] SNR J0453.2-6655 SNR 04 53 14 -66 55.2           ~ 4 0
33 SNR B0453-68.5 SNR 04 53 36.00 -68 29 30.0           ~ 73 1
34 PMN J0454-7000 Rad 04 53 52 -70 00.2           ~ 7 0
35 [BMD2010] SNR J0454.6-6713 SNR 04 54 33 -67 13.2           ~ 2 0
36 SNR J045447-662528 SNR 04 54 48.00 -66 25 42.0           ~ 108 0
37 NAME LMC B0455-6843 SNR 04 55 55.9 -68 38 29           ~ 64 1
38 DEM L 34 HII 04 56 34.3 -66 26 52           ~ 101 0
39 SNR J045949-700835 SNR 04 59 54.00 -70 08 06.0           ~ 54 0
40 SNR B0505-67.9 SNR 05 05 42.0 -67 52 29           ~ 131 0
41 SNR J050555-680150 SNR 05 05 55.00 -68 01 54.0           ~ 80 0
42 [BMD2010] SNR J0506.1-6541 SNR 05 06 05.0 -65 41 08           ~ 2 0
43 SNR J050650-702553 SNR 05 07 28.15 -70 23 53.2           ~ 18 1
44 SNR J050854-684447 SNR 05 08 58.7 -68 43 46           ~ 151 2
45 SNR B0509-67.5 SNR 05 09 31 -67 31.3           ~ 208 0
46 LHA 120-N 112 HII 05 13 24.657 -69 10 48.06           ~ 30 1
47 NGC 1918 SNR 05 19 04.50 -69 38 56.0           ~ 97 0
48 SNR B0519-69.0 SNR 05 19 35.14 -69 02 00.5           ~ 145 0
49 SNR J051945-692600 SNR 05 19 45.00 -69 26 00.0           ~ 44 0
50 [BMD2010] SNR J0521.6-6543 SNR 05 21 39 -65 43.1           ~ 3 0
51 NAME LMC Bar ? 05 22 08 -69 23.5           ~ 287 0
52 [BMD2010] SNR J0523.1-6753 SNR 05 23 07.0 -67 53 12           ~ 2 0
53 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16147 1
54 NGC 1948 As* 05 24 20.00 -66 24 12.0   10.81 10.61     ~ 102 0
55 SNR J052501-693842 SNR 05 25 02.20 -69 38 39.0           ~ 380 1
56 SNR B0525-66.0 SNR 05 25 27.1 -65 59 11           ~ 95 1
57 SNR J052559-660453 SNR 05 26 00.4 -66 05 02     12.71     ~ 423 2
58 SNR J052741-691207 SNR 05 27 39.00 -69 12 12.0           ~ 36 0
59 MDM 32 AGN 05 27 49.080 -70 36 41.70 19.557 19.498 18.879 19.090 18.495 ~ 21 0
60 [BMD2010] SNR J0527.9-6714 SNR 05 27 56 -67 13.7           ~ 2 0
61 SNR B0527-65.8 SNR 05 27 57.00 -65 49 54.0           ~ 36 0
62 DEM L 203 HII 05 29 05.0 -68 32 30           ~ 13 1
63 DEM L 214 HII 05 29 51 -67 01.1           ~ 19 0
64 DEM L 218 HII 05 30 40 -70 07.5           ~ 20 0
65 LHA 120-N 206A HII 05 31 15.2 -71 03 58           ~ 103 2
66 SNR B0532-67.5 SNR 05 32 30 -67 31.6           ~ 20 0
67 SNR J053400-695508 SNR 05 33 59.00 -69 55 00.0           ~ 62 0
68 SNR B0534-70.5 SNR 05 34 08.80 -70 34 28.0           ~ 63 0
69 NGC 2029 SNR 05 35 15.5 -67 34 04     12.29     ~ 97 0
70 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4720 2
71 SNR B0535-66.0 SNR 05 35 43.1 -66 01 59           ~ 169 1
72 NAME Honeycomb Nebula SNR 05 35 46 -69 18.0           ~ 46 0
73 SNR J053605-703826 SNR 05 36 07.00 -70 38 48.0           ~ 57 0
74 NAME 30 Dor C Rad 05 36 07.70 -69 11 52.6           ~ 71 1
75 DEM L 256 HII 05 37 27 -66 27.8           ~ 16 0
76 [BMD2010] SNR J0537.6-6920 SNR 05 37 37.0 -69 20 23           ~ 2 0
77 NGC 2060 SNR 05 37 51.4466169456 -69 10 23.947092084   9.69 9.59     ~ 339 2
78 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1871 1
79 LHA 120-N 159 HII 05 39 46.650 -69 45 39.94           ~ 264 2
80 PSR B0540-69 Psr 05 40 10.84 -69 19 54.2           ~ 849 3
81 SNR B0543-68.9 SNR 05 43 08 -68 58.3           ~ 55 0
82 DEM L 316b SNR 05 47 00.00 -69 43 00.0           ~ 25 0
83 DEM L 316a SNR 05 47 21.0 -69 41 25           ~ 29 0
84 SNR B0548-70.4 SNR 05 47 50.00 -70 24 54.0           ~ 80 0
85 NAME LMC B0550-6823 SNR 05 50 27.71 -68 23 00.8           ~ 30 1
86 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2410 2
87 NAME Local Group GrG ~ ~           ~ 7713 0

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2022.08.07-20:13:00

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