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 (2000)
RA 		ICRS (2000)
DEC 		Proper motions Parallaxes Redshift Rad. vel. cz Mag U Mag B Mag V Mag R Mag I Sp type Morph. type Angular size #ref
1983 - 2024
1 SN 1983R Supernova 01 50 13.10 +27 11 55.0 ~ ~ ~   14.09       SNIa ~ ~ ~ ~ 38
2 SN 1980N Supernova 03 22 59 -37 12.8 0.0056 1674 1679   12.5 12.37     SNIa ~ ~ ~ ~ 152
3 SN 1992A Supernova 03 36 27.41 -34 57 31.4 0.0058 1734 1739   12.56 12.50     SNIa ~ ~ ~ ~ 402
4 SN 1995E Supernova 07 51 56.75 +73 00 34.6 0.012 3576 3598   16.81 15.9     SNIa ~ ~ ~ ~ 117
5 SN 1999by Supernova 09 21 52.07 +51 00 06.6 0.0027 808 809   13.66       SNIap ~ ~ ~ ~ 293
6 SN 1995D Supernova 09 40 54.753 +05 08 26.16 0.0066 1972 1979   13.42 13.22     SNIa ~ ~ ~ ~ 150
7 SN 1998bu Supernova 10 46 46.01 +11 50 07.5 0.003 898 899   12.11       SNIa ~ ~ ~ ~ 318
8 SN 1994ae Supernova 10 47 01.94 +17 16 30.8 0.004 1197 1199   13.20 12.99     SNIa ~ ~ ~ ~ 172
9 SN 1989B Supernova 11 20 13.93 +13 00 18.9 0.0036 1077 1079   12.25       SNIa ~ ~ ~ ~ 361
10 SN 1989A Supernova 11 27 59.02 +29 30 21.4 0.0088 2627 2638   14.10       SNIa ~ ~ ~ ~ 51
11 SN 1991bg Supernova 12 25 03.70 +12 52 15.6 0.0042 1256 1259   14.75 14.3     SNIapec ~ ~ ~ ~ 586
12 SN 1974G Supernova 12 26 27.1 +31 13 24 ~ ~ ~   12.48       SNIa ~ ~ ~ ~ 86
13 SN 1984A Supernova 12 26 55.73 +15 03 17.1 ~ ~ ~   12.40 12.20     SNIa ~ ~ ~ ~ 135
14 SN 1994M Supernova 12 31 08.61 +00 36 19.6 0.02315600 6862 6941.9942   16.31 16.24     SNIa ~ ~ ~ ~ 93
15 SN 1960F Supernova 12 31 42.05 +03 56 47.7 ~ ~ ~   11.34 11.43     SNIa ~ ~ ~ ~ 92
16 SN 1994D Supernova 12 34 02.395 +07 42 05.70 0.001494 448 447.89   11.75 12.03     SNIa ~ ~ ~ ~ 542
17 SN 1991T Supernova 12 34 10.20 +02 39 56.4 0.0070 2091 2099   11.70 11.51     SNIapec ~ ~ ~ ~ 768
18 SN 1981B Supernova 12 34 29.57 +02 11 59.3 0.0072 2151 2159   11.74       SNIa ~ ~ ~ ~ 399
19 SN 1990N Supernova 12 42 56.68 +13 15 23.4 0.003 898 899   12.69 12.62     SNIa ~ ~ ~ ~ 392
20 SN 1983G Supernova 12 52 20.90 -01 12 12.0 ~ ~ ~   12.97       SNIa ~ ~ ~ ~ 106
21 SN 1937C Supernova 13 05 53.2 +37 36 07 ~ ~ ~   8.80 8.77     SNIa ~ ~ ~ ~ 179
22 SN 1996X Supernova 13 18 01.13 -26 50 45.3 0.007 2091 2099   12.99 13.00     SNIa ~ ~ ~ ~ 189
23 SN 1997br Supernova 13 20 42.40 -22 02 12.3 0.0080 2389 2398   14.06       SNIapec ~ ~ ~ ~ 104
24 SN 1994T Supernova 13 21 30.73 -02 08 56.5 0.035 10309 10493   17.31 17.15     SNIa ~ ~ ~ ~ 51
25 SN 1986G Supernova 13 25 36.46 -43 01 53.6 0.0027 808 809   12.45 11.44     SNIapec ~ ~ ~ ~ 408
26 SN 1972E Supernova 13 39 52.7 -31 40 09 0.0023 689 690   8.49 8.30     SNIa ~ ~ ~ ~ 263

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