2005ApJ...629..750D

Query : 2005ApJ...629..750D

2005ApJ...629..750D - Astrophys. J., 629, 750-756 (2005/August-3)

Why are radio galaxies prolific producers of type Ia supernovae?

DELLA VALLE M., PANAGIA N., PADOVANI P., CAPPELLARO E., MANNUCCI F. and TURATTO M.

Abstract (from CDS):

An analysis of SN Ia events in early-type galaxies from the database of Cappellaro and coworkers provides conclusive evidence that the rate of SNe Ia in radio-loud galaxies is about 4 times higher than the rate measured in radio-quiet galaxies, i.e., SN Ia rate(radio-loud galaxies)=0.43+0.19–0.14 h275SNu as compared to SN Ia rate(radio-quiet galaxies)=0.11+0.06–0.03 h275SNu. The actual value of the enhancement is likely to be in the range ∼2-7 (P∼10–4). This finding puts on robust empirical grounds the results obtained by Della Valle & Panagia on the basis of a smaller sample of SNe. We analyze the possible causes of this result and conclude that the enhancement of the SN Ia explosion rate in radio-loud galaxies has the same origin as their being strong radio sources, but there is no causal link between the two phenomena. We argue that repeated episodes of interaction and/or mergers of early-type galaxies with dwarf companions, on timescales of about 1 Gyr, are responsible for both inducing strong radio activity observed in ∼14% of early-type galaxies and supplying an adequate number of SN Ia progenitors to the stellar population of elliptical galaxies.

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Journal keyword(s): Galaxies: Active - Stars: Supernovae: General

Simbad objects: 43

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Number of rows : 43
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 1992bo SN* 01 21 58.44 -34 12 43.5   15.85 15.76     SNIa 119 1
2 MCG-06-04-014 GiG 01 22 02.3946806136 -34 11 48.186807036   14.63   13.39   ~ 47 1
3 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
4 SN 1968A SN* 03 19 49 +41 30.2   15.5 14.5     SNI 28 1
5 SN 1981D SN* 03 22 38.381 -37 13 57.79   12.59 12.33     SNIa 103 1
6 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
7 SN 1980N SN* 03 23 00.319 -37 12 49.90   12.5 12.37     SNIa 159 1
8 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
9 NGC 1380 Sy2 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 460 1
10 SN 1993C SN* 09 40 23.79 +14 56 11.2   18.7 18     SNIa 16 1
11 NGC 2954 LIN 09 40 24.0911388408 +14 55 21.532972188   13.50       ~ 70 0
12 NGC 3106 LIN 10 04 05.2518653088 +31 11 07.659854232   14.0       ~ 108 0
13 SN 1983J SN* 10 04 07 +31 11.1   16.2       SNIa 12 1
14 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 325 1
15 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
16 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
17 SN 1980I SN* 12 25 38.12 +12 53 23.5   12.7       SNIapec 44 1
18 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
19 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
20 NGC 4526 GiC 12 34 03.02853 +07 41 56.9040   10.6       ~ 707 0
21 NGC 4564 GiG 12 36 26.9869512504 +11 26 21.204472848 12.51 12.05 11.12     ~ 615 1
22 SN 1961H SN* 12 36 27.27 +11 26 24.6   11.8       SNIa 63 1
23 SN 1983G SN* 12 52 20.90 -01 12 12.0   12.97       SNIa 110 1
24 NGC 4753 GiG 12 52 22.112 -01 11 58.88 11.26 10.85 9.95     ~ 288 1
25 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
26 SN 1981G SN* 12 59 36.83 +27 57 43.3   15.0 15.0     SNIa 17 1
27 SN 1991Q SN* 13 02 07.62 +27 38 55.1           ~ 10 1
28 NGC 4926A EmG 13 02 07.91760 +27 38 53.9770   15.1       ~ 122 0
29 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
30 NGC 5061 Sy2 13 18 05.054 -26 50 14.00   11.18 10.41 9.66 13.59 ~ 181 0
31 SN 1991bi SN* 13 23 43.97 +31 33 50.9     18.5     SNIa 9 1
32 NGC 5127 LIN 13 23 45.0315298080 +31 33 56.527040808   13.9       ~ 183 0
33 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
34 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
35 SN 1990M SN* 14 11 29.3 -05 02 36           SNIa 40 1
36 NGC 5493 GiG 14 11 29.3792026752 -05 02 36.999208608   13.5       ~ 110 0
37 SN 1970J SN* 23 20 12.69 +08 11 52.4   15.00 14.61     SNIa 69 1
38 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 472 0
39 SN 1972J SN* 23 21 41 +08 52.5   14.76 14.49     SNIa 48 1
40 NGC 7634 GiG 23 21 41.7480972864 +08 53 12.846456708   13.7       ~ 84 0
41 SN 1993ah SN* 23 51 50.27 -27 57 47.0   16.32 16.31     SNIa 47 1
42 MCG-05-56-024 GiG 23 51 50.339 -27 57 55.25   15.43   14.12   ~ 35 1
43 PMN J2351-2758 Rad 23 51 55.32 -27 58 22.0           ~ 4 1

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