2024MNRAS.527.7355G

Query : 2024MNRAS.527.7355G

2024MNRAS.527.7355G - Mon. Not. R. Astron. Soc., 527, 7355-7362 (2024/January-3)

G213.0-0.6, a true supernova remnant or just an H II region?

GAO X.Y., WU C.J., SUN X.H., REICH W. and HAN J.L.

Abstract (from CDS):

G213.0-0.6 is a faint extended source situated in the anticentre region of the Galactic plane. It has been classified as a shell-type supernova remnant (SNR) based on its shell-like morphology, steep radio continuum spectrum, and high ratio of [S II]/Hα. With new optical emission line data of Hα, [S II], and [N II] recently observed by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, the ratios of [S II]/Hα and [N II]/Hα are re-assessed. The lower values than those previously reported put G213.0-0.6 around the borderline of SNR-H II region classification. We decompose the steep-spectrum synchrotron and the flat-spectrum thermal free-free emission in the area of G213.0-0.6 with multi-frequency radio continuum data. G213.0-0.6 is found to show a flat spectrum, in conflict with the properties of a shell-type SNR. Such a result is further confirmed by TT-plots made between the 863-MHz, 1.4-GHz, and 4.8-GHz data. Combining the evidence extracted in both optical and radio continuum, we argue that G213.0-0.6 is possibly not an SNR, but an H II region instead. The VLSR pertaining to the Hα filaments places G213.0-0.6 approximately 1.9 kpc away in the Perseus Arm.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): H ii regions - ISM: supernova remnants - radio continuum: ISM

Simbad objects: 30

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Number of rows : 30
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 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
2 SNR G180.0-01.7 SNR 05 39 00.000 +27 50 00.00           ~ 294 2
3 LBN 210.04-02.09 HII 06 38 08 +01 25.2           ~ 15 0
4 UCAC4 452-021781 * 06 43 44.2044098304 +00 23 44.490070572   13.35 13.45 13.49   B2IV 3 0
5 Min 2-62 HII 06 43 48.4473235800 -01 08 19.726436292           ~ 40 2
6 UCAC4 451-022203 EB* 06 43 50.8610237640 +00 08 05.732930400   13.93 13.540 13.58   B2IV 7 0
7 UCAC4 451-022252 * 06 43 56.0726412960 +00 09 18.672814548   13.08 12.80 12.77   B2IV 3 0
8 TYC 147-2024-1 * 06 43 57.3915184656 +00 21 05.933685312   12.47 12.50 12.40   B2IV 9 0
9 UCAC4 452-021858 * 06 43 57.5136076224 +00 20 50.904552984     12.77 12.73   B2III 4 0
10 HD 292163 * 06 44 12.3800443176 +00 43 37.378078536   11.27 11.00 10.97   OB 10 0
11 TYC 147-506-1 gD* 06 44 17.4901131264 +00 20 31.570570932   12.48 11.93 11.75   B1V 15 0
12 HD 292164 * 06 44 18.6582018984 +00 43 21.573531624   11.19 10.81     B1.5III 12 0
13 HD 48691 * 06 44 36.5532398952 +00 35 21.503964012 7.08 7.88 7.87     B5/7Ib 54 0
14 Cl* Dolidze 25 MV 12 * 06 44 40.0921578528 +00 15 21.346060356 10.5 11.16 10.81 10.76   B 13 0
15 UCAC4 452-022148 V* 06 44 49.1609681448 +00 21 11.107543212   14.15 13.76 13.80   B2IV 5 0
16 HD 292167 * 06 44 53.8144895352 +00 37 12.593465724 9.1 9.82 9.63 9.21   A3Ia 52 0
17 Cl* Dolidze 25 MV 19 * 06 45 03.5711927352 +00 12 56.974845564 12.57 13.20 12.71 12.65 11.85 B2III 8 0
18 Cl* Dolidze 25 MV 17 * 06 45 04.7130201216 +00 13 47.287205400 11.51 12.133 11.452 11.258 10.17 B8 15 0
19 UCAC4 452-022297 * 06 45 14.0886061920 +00 12 35.350399440   15.02 14.31 14.25   B2V 4 0
20 LBN 211.65-01.51 HII 06 45 28 +00 17.8           ~ 75 0
21 Cl* Dolidze 25 MV 24 gD* 06 45 33.7633599168 +00 20 09.965801724   12.57 12.04 11.96   M1V 17 0
22 UCAC4 454-022140 * 06 45 39.5169531528 +00 37 31.993898916   14.34 13.82 13.60   B2III 4 0
23 SNR G211.7-01.1 SNR 06 45.8 +00 21           ~ 15 0
24 UCAC4 451-023244 * 06 47 04.8029704872 +00 07 23.488925412   13.50 12.69 12.43   B1II 3 0
25 HD 49660 * 06 49 28.6396549728 -00 12 34.757172144   8.95 8.98     A0/1V 19 0
26 HD 292425 * 06 49 43.8792763104 -00 13 06.269677176   10.93 10.7     B5 13 0
27 SNR G213.0-00.6 SNR 06 51 -00.5           ~ 18 2
28 HD 49933 PM* 06 50 49.8309774552 -00 32 27.167495244   6.147 5.771 7.04   F3V 407 2
29 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
30 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1

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