2020ApJ...890...15F

Query : 2020ApJ...890...15F

2020ApJ...890...15F - Astrophys. J., 890, 15-15 (2020/February-2)

Detection of late-time optical emission from SN 1941C in NGC 4136.

FESEN R.A. and WEIL K.E.

Abstract (from CDS):

We report the detection of broad, high-velocity oxygen emission lines from the site of SN 1941C nearly eight decades after outburst, making it the oldest optically detected historical core-collapse supernova (CCSN) and one of the youngest CCSN remnants with a well determined age. In contrast to the strongly blueshifted emission line profiles observed for other late-time CCSNe thought to be due to internal dust extinction of far-side hemisphere of expanding ejecta, SN 1941C's spectrum exhibits stronger redshifted than blueshifted emissions of [O I] 6300, 6364 Å, [O II] 7319, 7330 Å, and [O III] 4959, 5007 Å. These oxygen emissions exhibit rest-frame expansion velocities from -2200 to +4400kms^–1. No other significant broad line emissions were detected including Hα emission. We discuss possible causes for this unusual spectrum and compare SN 1941C's optical and X-ray luminosities to other evolved CCSNe.

Journal keyword(s): Supernova remnants - Core-collapse supernovae - Type II supernovae - Interstellar emissions

Simbad objects: 35

Full paper

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Number of rows : 35

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	SNR B0102-72.3	SNR	01 04 01.2	-72 01 52						~	422	1
3	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72			~	6226	1
4	SNR G130.7+03.1	SNR	02 05 35.73	+64 49 41.3						~	661	4
5	SN 1986J	SN*	02 22 31.33	+42 19 56.4		18.4	18.4			SNII	331	1
6	NGC 891	H2G	02 22 32.907	+42 20 53.95	11.08	10.81	9.93	7.86		~	1741	2
7	NAME Magellanic Clouds	GrG	03 00	-71.0						~	7988	0
8	M 1	SNR	05 34 31.8	+22 01 03						~	6516	1
9	PSR B0540-69	Psr	05 40 11.2000490438	-69 19 54.198559829						~	976	3
10	SN 1993J	SN*	09 55 24.77476	+69 01 13.7026		10.8	12.0			SNIIb	1507	1
11	M 81	Sy2	09 55 33.1726556496	+69 03 55.062505368		7.89	6.94			~	4725	3
12	SN 1941C	SN*	12 09 17.7	+29 55 39		16.8	16.8			SNII	39	1
13	NGC 4136	GiG	12 09 17.7035859024	+29 55 39.419783832		11.69				~	244	1
14	SN 1986E	SN*	12 21 41.19	+14 37 54.8		14.2				SNIIL	69	1
15	NGC 4302	GiC	12 21 42.477	+14 35 51.94		13.4	11.61			~	348	0
16	M 100	AGN	12 22 54.9299993592	+15 49 20.296257960	10.04	10.05	9.35			~	1963	2
17	SN 1979C	SN*	12 22 58.58	+15 47 52.7		11.6				SNIIL	609	1
18	NAME NGC 4449 SNR	SNR	12 28 10.8	+44 06 41						~	40	0
19	NGC 4449	EmG	12 28 11.118	+44 05 36.81	10.11	9.98	9.64	9.45		~	1192	1
20	M 83	SBG	13 37 00.91920	-29 51 56.7400	8.85	8.11	7.52	7.21		~	2778	2
21	SN 1957D	SN*	13 37 03.57	-29 49 40.7		15.0	15.0			~	121	1
22	[BWL2015] B12-174a	SR?	13 37 06.64	-29 53 31.5						~	9	0
23	SN 1923A	SN*	13 37 09.2	-29 51 04		12.4	14.0			SNIIP:	80	1
24	SN 1909A	SN*	14 02 03.17	+54 28 05.9		13.5	13.50			SNIIP:	59	1
25	SN 1970G	SN*	14 03 00.83	+54 14 32.8		11.8	11.50			SNIIL	221	1
26	M 101	GiP	14 03 12.583	+54 20 55.50		8.46	7.86	7.76		~	3138	2
27	NAME Circinus Galaxy	Sy2	14 13 09.906	-65 20 20.47		10.89	9.84	10.6	10.0	~	1331	1
28	SN 1996cr	SN*	14 13 10.01139	-65 20 44.5654			19.5			SNIIn:	90	1
29	SN 1917A	SN*	20 34 46.9	+60 07 29		13.6				SNII	52	1
30	NGC 6946	H2G	20 34 52.332	+60 09 13.24		10.5				~	2661	2
31	NGC 6949	AGN	20 35 06.9170240784	+64 48 10.045666548		15.0				~	65	0
32	SN 1948B	SN*	20 35 21.5	+60 10 16		14.0	14.0			SNIIP	77	1
33	SN 2004et	SN*	20 35 25.33	+60 07 17.7		12.88				SNIIP	547	1
34	SN 1980K	SN*	20 35 30.07	+60 06 23.7		11.6				SNIIL	482	1
35	NAME Cas A	SNR	23 23 26.0	+58 48 41			14.30			~	3033	1

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