2021MNRAS.500.2336Y

Query : 2021MNRAS.500.2336Y

2021MNRAS.500.2336Y - Mon. Not. R. Astron. Soc., 500, 2336-2358 (2021/January-2)

New optically identified supernova remnants in the Large Magellanic Cloud.

YEW M., FILIPOVIC M.D., STUPAR M., POINTS S.D., SASAKI M., MAGGI P., HABERL F., KAVANAGH P.J., PARKER Q.A., CRAWFORD E.J., VUKOTIC B., UROSEVIC D., SANO H., SEITENZAHL I.R., ROWELL G., LEAHY D., BOZZETTO L.M., MAITRA C., LEVERENZ H., PAYNE J.L., PARK L.A.F., ALSABERI R.Z.E. and PANNUTI T.G.

Abstract (from CDS):

We present a new optical sample of three Supernova Remnants (SNRs) and 16 Supernova Remnant (SNR) candidates in the Large Magellanic Cloud (LMC). These objects were originally selected using deep H α, [S II], and [O III] narrow-band imaging. Most of the newly found objects are located in less dense regions, near or around the edges of the LMC's main body. Together with previously suggested MCSNR J0541-6659, we confirm the SNR nature for two additional new objects: MCSNR J0522-6740 and MCSNR J0542-7104. Spectroscopic follow-up observations for 12 of the LMC objects confirm high [S II]/H α emission-line ratios ranging from 0.5 to 1.1. We consider the candidate J0509-6402 to be a special example of the remnant of a possible type Ia Supernova (SN) which is situated some 2° (∼1.75 kpc) north from the main body of the LMC. We also find that the SNR candidates in our sample are significantly larger in size than the currently known LMC SNRs by a factor of ∼2. This could potentially imply that we are discovering a previously unknown but predicted, older class of large LMC SNRs that are only visible optically. Finally, we suggest that most of these LMC SNRs are residing in a very rarefied environment towards the end of their evolutionary span where they become less visible to radio and X-ray telescopes.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: spectroscopic - ISM: supernova remnants - Magellanic Clouds

Status at CDS : Examining the need for a new acronym. // All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 27

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Number of rows : 27
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 MCSNR J0041-7336 SNR 00 40 55 -73 36.9           ~ 36 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 MCSNR J0105-7223 SNR 01 05 05.6 -72 23 20           ~ 87 1
4 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
5 CD-28 595 PM* 01 54 50.2703221766 -27 28 35.739139915   12.06 11.51     ~ 138 0
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
7 LHA 120-N 185 EmO 04 53 58.9 -70 00 53           ~ 40 0
8 LHA 120-N 9 HII 04 55 10.9 -67 11 32           ~ 55 1
9 LHA 120-N 186 EmO 04 59 45.5 -70 09 45           ~ 40 0
10 LHA 120-N 103B EmO 05 08 47.8 -68 45 39           ~ 244 1
11 [HP99] 544 X 05 13 33.4 -67 32 07           ~ 5 0
12 LHA 120-N 44 EmO 05 22 06.9 -67 56 46           ~ 211 1
13 MCSNR J0522-6740 SNR 05 22 32.40 -67 40 56.0           ~ 3 0
14 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
15 MCSNR J0525-6938 SNR 05 25 02.3 -69 38 39           ~ 446 1
16 MCSNR J0528-6713 SNR 05 28 24.10 -67 10 11.0           ~ 12 0
17 [HP99] 1077 X 05 29 07.6 -70 04 57           ~ 3 0
18 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
19 CXOU J054138.2-665817 X 05 41 38.2 -66 58 17           ~ 1 0
20 CXOU J054140.4-665912 X 05 41 40.4 -66 59 12           ~ 1 0
21 [HP99] 456 X 05 41 41.2 -66 58 26           ~ 12 0
22 MCSNR J0542-7104 X 05 42 40.3 -71 04 37           ~ 6 0
23 LHA 120-N 70 HII 05 43 17.5 -67 50 48           ~ 85 0
24 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
25 SNR G107.0+09.0 SNR 22 00 25 +66 26.0           ~ 12 0
26 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1188 2
27 NAME Local Group GrG ~ ~           ~ 9325 0

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