2006PASP..118..560B

Query : 2006PASP..118..560B

2006PASP..118..560B - Publ. Astron. Soc. Pac., 118, 560-571 (2006/April-0)

Comparative direct analysis of type Ia supernova spectra. II. Maximum light.

BRANCH D., DANG L.C., HALL N., KETCHUM W., MELAKAYIL M., PARRENT J., TROXEL M.A., CASEBEER D., JEFFERY D.J. and BARON E.

Abstract (from CDS):

A comparative study of near-maximum-light optical spectra of 24 Type Ia supernovae (SNe Ia) is presented. The spectra are assigned to four groups. Seven ``core-normal'' SNe Ia have very similar spectra, except for strong, high-velocity Ca II absorption in SN 2001el. Seven SNe Ia are assigned to a ``broad-line'' group, the most extreme of which is SN 1984A. Five SNe Ia, including SN 1991bg, are assigned to a ``cool'' group. Five SNe Ia, including SN 1991T, are assigned to a ``shallow-silicon'' group. Comparisons with SYNOW synthetic spectra provide a basis for discussion of line identifications and an internally consistent quantification of the maximum-light spectroscopic diversity among SNe Ia. The extent to which SN Ia maximum-light spectra appear to have a continuous distribution of properties, rather than consist of discrete subtypes, is discussed.

Abstract Copyright: ∼

Journal keyword(s): Stars: Supernovae: General

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 - 2024 		#notes
1 SN 2000cx SN* 01 24 46.1 +09 30 31           SNIap 213 1
2 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 402 1
3 SN 2001el SN* 03 44 30.60 -44 38 23.4   12.81       SNIa 261 1
4 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 292 1
5 SN 2002bf SN* 10 15 42.316 +55 40 07.35   16.22       SNIa 62 1
6 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 307 1
7 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 317 1
8 SN 1994ae SN* 10 47 01.94 +17 16 30.8   13.20 12.99     SNIa 172 1
9 SN 1999aw SN* 11 01 36.37 -06 06 31.6   16.88       SNIa 71 1
10 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 361 1
11 SN 1998aq SN* 11 56 25.87 +55 07 43.2   12.31 14.9     SNIa 186 1
12 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 583 1
13 SN 1984A SN* 12 26 55.73 +15 03 17.1   12.40 12.20     SNIa 134 1
14 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 542 1
15 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 764 1
16 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 401 1
17 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 391 1
18 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SNIapec 222 1
19 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 189 1
20 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 408 1
21 SN 1997cn SN* 14 09 57.76 +17 32 32.3   17.2 16.7     SNIapec 82 1
22 SN 2001ay SN* 14 26 17.00 +26 14 55.8     16.9     SNIap 77 1
23 SN 1991M SN* 15 58 34.82 +17 27 28.7     14.55     SNIa 60 1
24 SN 1999ee SN* 22 16 09.40 -36 50 31.5   14.85       SNIa 191 1

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