2000ApJ...543L..49H

Query : 2000ApJ...543L..49H

2000ApJ...543L..49H - Astrophys. J., 543, L49-L52 (2000/November-1)

On the spectroscopic diversity of type Ia supernovae.

HATANO K., BRANCH D., LENTZ E.J., BARON E., FILIPPENKO A.V. and GARNAVICH P.M.

Abstract (from CDS):

A comparison of the ratio of the depths of two absorption features in the spectra of Type Ia supernovae (SNe Ia) near the time of maximum brightness with the blueshift of the deep red Si II absorption feature 10 days after maximum shows that the spectroscopic diversity of SNe Ia is multidimensional. There is a substantial range of blueshifts at a given value of the depth ratio. We also find that the spectra of a sample of SNe Ia obtained a week before maximum brightness can be arranged in a ``blueshift sequence'' that mimics the time evolution of the pre-maximum-light spectra of an individual SN Ia, the well-observed SN 1994D. Within the context of current SN Ia explosion models, we suggest that some of the SNe Ia in our sample were delayed detonations while others were plain deflagrations.

Abstract Copyright: ∼

Journal keyword(s): Hydrodynamics - Radiative Transfer - Stars: Supernovae: General - Stars: Supernovae: Individual: Alphanumeric: SN 1984A - Stars: Supernovae: Individual: Alphanumeric: SN 1992A - Stars: Supernovae: Individual: Alphanumeric: SN 1994D

Simbad objects: 26

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Number of rows : 26
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 1983R SN* 01 50 13.10 +27 11 55.0   14.09       SNIa 38 1
2 SN 1980N SN* 03 23 00.319 -37 12 49.90   12.5 12.37     SNIa 159 1
3 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
4 SN 1995E SN* 07 51 56.75 +73 00 34.6   16.81 15.9     SNIa 122 1
5 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 307 1
6 SN 1995D SN* 09 40 54.753 +05 08 26.16   13.42 13.22     SNIa 158 1
7 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 328 1
8 SN 1994ae SN* 10 47 01.94 +17 16 30.8   13.20 12.99     SNIa 183 1
9 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
10 SN 1989A SN* 11 27 59.02 +29 30 21.4   14.10       SNIa 54 1
11 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
12 SN 1974G SN* 12 26 27.1 +31 13 24   12.48       SNIa 101 1
13 SN 1984A SN* 12 26 55.73 +15 03 17.1   12.40 12.20     SNIa 140 1
14 SN 1994M SN* 12 31 08.61 +00 36 19.6   16.31 16.24     SNIa 102 1
15 SN 1960F SN* 12 31 42.05 +03 56 47.7   11.34 11.43     SNIa 116 1
16 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
17 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
18 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
19 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 406 1
20 SN 1983G SN* 12 52 20.90 -01 12 12.0   12.97       SNIa 110 1
21 SN 1937C SN* 13 05 53.2 +37 36 07   8.80 8.77     SNIa 203 1
22 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
23 SN 1997br SN* 13 20 42.40 -22 02 12.3   14.06       SNIapec 113 1
24 SN 1994T SN* 13 21 30.73 -02 08 56.5   17.31 17.15     SNIa 57 1
25 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
26 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 309 1

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