2001PASP..113..169B

Query : 2001PASP..113..169B

2001PASP..113..169B - Publ. Astron. Soc. Pac., 113, 169-172 (2001/February-0)

Spectroscopically peculiar type Ia supernovae and implications for progenitors.

BRANCH D.

Abstract (from CDS):

In a recent paper Li et al. reported that 36% of 45 Type Ia supernovae (SNe Ia) discovered since 1997 in two volume-limited supernova searches were spectroscopically peculiar, and they suggested that because this peculiarity rate is higher than that reported for an earlier observational sample by Branch et al., it is now more likely that SNe Ia are produced by more than one kind of progenitor. In this paper I discuss and clarify the differences between the results of Li et al. and Branch et al., and I suggest that multiple-progenitor systems are now less likely than they were before.

Abstract Copyright: ∼

Journal keyword(s): Stars: Supernovae: General - Stars: Supernovae: Individual: Alphanumeric: SN 1986G - Stars: Supernovae: Individual: Alphanumeric: SN 1991T - Stars: Supernovae: Individual: Alphanumeric: SN 1991bg - supernovae: individual (SN 1999aa)

Simbad objects: 24

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Number of rows : 24
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 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
2 SN 1999aa SN* 08 27 42.03 +21 29 14.8           SNIap 274 1
3 SN 1957A SN* 09 21 51.2 +50 59 52   14.6       SNIapec 53 1
4 SN 1988B SN* 10 19 05.1 +46 27 14   15.5 15.5     SNIa 12 1
5 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
6 SN 1960H SN* 12 06 07.52 +47 30 38.1   14.5 14.5     SNIapec 22 1
7 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
8 SN 1980I SN* 12 25 38.12 +12 53 23.5   12.7       SNIapec 44 1
9 SN 1974G SN* 12 26 27.1 +31 13 24   12.48       SNIa 101 1
10 SN 1984A SN* 12 26 55.73 +15 03 17.1   12.40 12.20     SNIa 140 1
11 NGC 4496 GiP 12 31 39.2222392512 +03 56 21.641352828   11.71       ~ 376 0
12 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
13 NGC 4527 AGN 12 34 08.49600 +02 39 13.7160   12.4       ~ 549 2
14 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
15 NGC 4536 H2G 12 34 27.12887 +02 11 16.3680 11.14 11.16 10.55 17.393   ~ 913 3
16 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
17 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 406 1
18 SN 1997Y SN* 12 45 31.40 +54 44 17.0   15.28       SNIa 61 1
19 SN 1981F SN* 12 50 33 -09 27.0   15.0 15.0     SNIa 8 1
20 SN 1971I SN* 13 15 49.6 +41 59 15   11.60       SNIa 75 1
21 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
22 SN 1997br SN* 13 20 42.40 -22 02 12.3   14.06       SNIapec 113 1
23 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
24 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 309 1

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