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 - 2024 		#notes
1 SN 1983R SN* 01 50 13.10 +27 11 55.0   14.09       SNIa 38 1
2 SN 1980N SN* 03 22 59 -37 12.8   12.5 12.37     SNIa 152 1
3 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 403 1
4 SN 1995E SN* 07 51 56.75 +73 00 34.6   16.81 15.9     SNIa 117 1
5 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 294 1
6 SN 1995D SN* 09 40 54.753 +05 08 26.16   13.42 13.22     SNIa 151 1
7 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 318 1
8 SN 1994ae SN* 10 47 01.94 +17 16 30.8   13.20 12.99     SNIa 173 1
9 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 362 1
10 SN 1989A SN* 11 27 59.02 +29 30 21.4   14.10       SNIa 52 1
11 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 586 1
12 SN 1974G SN* 12 26 27.1 +31 13 24   12.48       SNIa 100 1
13 SN 1984A SN* 12 26 55.73 +15 03 17.1   12.40 12.20     SNIa 136 1
14 SN 1994M SN* 12 31 08.61 +00 36 19.6   16.31 16.24     SNIa 93 1
15 SN 1960F SN* 12 31 42.05 +03 56 47.7   11.34 11.43     SNIa 115 1
16 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 542 1
17 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 768 1
18 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 403 1
19 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 393 1
20 SN 1983G SN* 12 52 20.90 -01 12 12.0   12.97       SNIa 107 1
21 SN 1937C SN* 13 05 53.2 +37 36 07   8.80 8.77     SNIa 202 1
22 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 190 1
23 SN 1997br SN* 13 20 42.40 -22 02 12.3   14.06       SNIapec 105 1
24 SN 1994T SN* 13 21 30.73 -02 08 56.5   17.31 17.15     SNIa 51 1
25 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 409 1
26 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 303 1

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