2005PASP..117..553V

Query : 2005PASP..117..553V

2005PASP..117..553V - Publ. Astron. Soc. Pac., 117, 553-562 (2005/June-0)

Supernova 1954J (Variable 12) in NGC 2403 unmasked.

VAN DYK S.D., FILIPPENKO A.V., CHORNOCK R., LI W. and CHALLIS P.M.

Abstract (from CDS):

We have confirmed that the precursor star of the unusual supernova 1954J (also known as Variable 12) in NGC 2403 survived what appears to have been a superoutburst, similar to the 1843 Great Eruption of η Carinae in the Galaxy. The apparent survivor has changed little in brightness and color over the last 8 years, and a Keck spectrum reveals characteristics broadly similar to those of η Car. This is further suggested by our identification of the actual outburst-surviving star in high-resolution images obtained with the Advanced Camera for Surveys on the Hubble Space Telescope. We reveal this ``supernova impostor'' as a highly luminous (M⁰_V~-8.0 mag), very massive (M_initial≳25 M_☉) eruptive star, now surrounded by a dusty (A_V~4 mag) nebula, similar to η Car's famous Homunculus.

Abstract Copyright: ∼

Journal keyword(s): Stars: Supernovae: General - supernovae: individual (SN 1954J) - Stars: Evolution - Stars: Early-Type - Stars: Variables: Other - Galaxies: Individual: NGC Number: NGC 2403 - Stars: Supergiants

Nomenclature: Table 2, Fig.3: [VFC2005] SN 1954J N (Nos 1-4).

Simbad objects: 32

Full paper

View the references in ADS

Number of rows : 32

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	NGC 1058	Sy2	02 43 30.0264850248	+37 20 28.782851784		12.29	11.75	10.85		~	483	0
2	SN 1961V	SN*	02 43 36.42	+37 20 43.6		12.7	12.5			SNIIpec?	212	2
3	SN 1987A	SN*	05 35 27.98840	-69 16 11.1134						SNIIpec	5203	2
4	[DRR96] NGC 2363 V1	V*	07 28 43.37	+69 11 23.9		17.82	17.88			~	39	1
5	NGC 2366	H2G	07 28 52.4529	+69 12 38.859	12.25	11.86	11.39	11.33		~	801	0
6	NGC 2403	AGN	07 36 51.3381434280	+65 36 09.650825640	9.31	8.84	8.38	8.19		~	1887	1
7	[VFC2005] SN 1954J 2	*	07 36 55.31	+65 37 51.7		24.85	22.76		20.58	~	2	0
8	[VFC2005] SN 1954J 4	*	07 36 55.38	+65 37 52.5		24.29	23.08		22.21	~	2	0
9	[VFC2005] SN 1954J 1	*	07 36 55.41	+65 37 51.8		24.74	22.72		20.40	~	2	0
10	[VFC2005] SN 1954J 3	*	07 36 55.43	+65 37 52.3		23.07	22.83		22.81	~	2	0
11	SN 1954J	SN*	07 36 56.20	+65 37 52.3		16.3	16.50			SNIIpec?	95	2
12	TS V37	s*b	07 37 01.83	+65 34 29.3			19			LBV	67	1
13	2MASS J07371703+6535579	HXB	07 37 17.0432126424	+65 35 57.826001220						SNIIP	317	1
14	SN 1999bw	SN*	10 19 46.81	+45 31 35.0			17.8			SNIIn?	61	2
15	NGC 3198	EmG	10 19 54.990	+45 32 58.88	10.83	10.87	10.33			~	946	1
16	Cl Trumpler 16	OpC	10 45 01.9	-59 42 00						~	510	0
17	NGC 3372	HII	10 45 02.23	-59 41 59.8						~	1071	2
18	NAME Homunculus Nebula	ISM	10 45 03.5	-59 41 04						~	379	1
19	* eta Car	s*b	10 45 03.545808	-59 41 03.95124	6.37	7.03	6.48	6.123	4.41	LBV	2543	0
20	NGC 3432	AG?	10 52 31.132	+36 37 07.60		11.81	11.67	11.29		~	321	1
21	SN 2000ch	SN*	10 52 41.40	+36 40 09.5			17.4			SNIIn?	104	2
22	V* AG Car	WR*	10 56 11.5781414448	-60 27 12.810673260	7.00	7.57	6.96	7.73		WN11h	649	0
23	NGC 3504	LIN	11 03 11.19147	+27 58 20.7660		13.48	12.93			~	545	2
24	SN 2001ac	SN*	11 03 15.37	+27 58 29.5			18.2			SNIIn?	35	2
25	AT 1997bs	ev	11 20 14.25	+12 58 19.6			17.13			SNIIn?	128	1
26	M 66	AGN	11 20 15.0	+12 59 29	9.85	9.65	8.92			~	1509	4
27	M 83	SBG	13 37 00.91920	-29 51 56.7400	8.85	8.11	7.52	7.21		~	2778	2
28	SN 1957D	SN*	13 37 03.57	-29 49 40.7		15.0	15.0			~	121	1
29	IC 4996	OpC	20 16 32.7	+37 38 46						~	187	0
30	* P Cyg	s*b	20 17 47.2019733389	+38 01 58.549132671	4.66	5.24	4.82	4.28	4.02	B1-2Ia-0ep	1200	1
31	Ass Cyg OB 1	As*	20 17.8	+37 38						~	270	1
32	* rho Cas	LP*	23 54 23.0325302520	+57 29 57.774737400	7.00	5.85	4.59	3.63	2.89	G2_0	401	0

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