2001ApJ...559L.139S

Query : 2001ApJ...559L.139S

2001ApJ...559L.139S - Astrophys. J., 559, L139-L142 (2001/October-1)

The continuing radio evolution of SN 1970G.

STOCKDALE C.J., GOSS W.M., COWAN J.J. and SRAMEK R.A.

Abstract (from CDS):

Using the Very Large Array, we have detected radio emission from the site of SN 1970G in the Sc galaxy M101. These observations are 31 yr after the supernova event, making SN 1970G the longest monitored radio supernova. With flux densities of 0.12±0.020 mJy at 6 cm and 0.16±0.015 mJy at 20 cm, the spectral index of -0.24±0.20 appears to have flattened somewhat when compared with the previously reported value of -0.56±0.11, taken in 1990. The radio emission at 20 cm has decayed since the 1990 observations with a power-law index of β20cm=-0.28±0.13. We discuss the radio properties of this source and compare them to those of other Type II radio supernovae.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: General - Galaxies: Individual: Messier Number: M101 - Radio Continuum: Stars - Stars: Supernovae: General - Stars: Supernovae: Individual: Alphanumeric: SN 1970G

Simbad objects: 23

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Number of rows : 23
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 SN 1986J SN* 02 22 31.33 +42 19 56.4   18.4 18.4     SNII 331 1
2 SN 1984L SN* 02 35 30.54 -07 09 30.3   14.0       SNIb 197 1
3 NGC 1058 Sy2 02 43 30.0264850248 +37 20 28.782851784   12.29 11.75 10.85   ~ 483 0
4 SN 1961V SN* 02 43 36.42 +37 20 43.6   12.7 12.5     SNIIpec? 212 2
5 SN 1978K SN* 03 17 38.620 -66 33 03.40   13.0       SNII 214 1
6 NGC 1313 AG? 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 723 2
7 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
8 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
9 SN 1979C SN* 12 22 58.58 +15 47 52.7   11.6       SNIIL 609 1
10 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
11 SN 1983N SN* 13 36 51.23 -29 54 01.7   11.7       SNIb 278 1
12 SN 1950B SN* 13 36 52.88 -29 51 55.7   14.5 14.5     ~ 58 1
13 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
14 SN 1957D SN* 13 37 03.57 -29 49 40.7   15.0 15.0     ~ 121 1
15 SN 1923A SN* 13 37 09.2 -29 51 04   12.4 14.0     SNIIP: 80 1
16 ICRF J140028.6+621038 Sy2 14 00 28.64823540 +62 10 38.5885744   22.137 20.373 19.530   ~ 187 1
17 SN 1970G SN* 14 03 00.83 +54 14 32.8   11.8 11.50     SNIIL 221 1
18 NGC 5455 H2G 14 03 01.17 +54 14 29.4           ~ 105 0
19 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
20 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
21 SN 1968D SN* 20 34 58.40 +60 09 34.4   13.5 13.5     SNII 74 1
22 SN 1980K SN* 20 35 30.07 +60 06 23.7   11.6       SNIIL 482 1
23 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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