2008A&A...487...19N


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST01:49:07

2008A&A...487...19N - Astronomy and Astrophysics, volume 487, 19-31 (2008/8-3)

The colour-lightcurve shape relation of type Ia supernovae and the reddening law.

NOBILI S. and GOOBAR A.

Abstract (from CDS):

We present a study of the time sequence of optical colours of a large sample of nearby type Ia supernovae (SNe Ia). We study the dependence of the colour time-evolution on the lightcurve shape, parametrized by the stretch factor. We determine the spectral template that minimizes the dispersion in the colours of SNe Ia, measured by UBVRI photometry of nearby supernovae. A clear colour dependence upon lightcurve shape is found, such that the narrower lightcurves are redder up to about one month past lightcurve maximum. After correcting for lightcurve-shape differences in intrinsic colour, we derive an average reddening law, that is well described by a Cardelli, Clayton & Mathis (1989ApJ...345..245C) law with RV=1.75±0.27 for 80 type Ia supernovae with E(B-V)≤0.7mag. A subset of 69 SNe that have modest reddening, E(B-V)<0.25 mag, gives a significantly smaller value, RV∼1, which suggests that the observed reddening of type Ia supernovae may have a more complex origin, perhaps associated with other processes besides extinction by interstellar dust inside the host galaxy.

Abstract Copyright:

Journal keyword(s): stars: supernovae: general - ISM: dust, extinction - methods: statistical

Simbad objects: 71

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Number of rows : 71

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 SN 1992au SN* 00 10 40.48 -49 56 45.3   18.17 18.11     SNIa 34 1
2 SN 1996bl SN* 00 36 17.97 +11 23 40.5   17.05 16.63     SNIa 53 1
3 SN 1999ef SN* 00 58 46.2 +12 44 45   15.72       SNIa 28 2
4 SN 1998ef SN* 01 03 26.87 +32 14 12.4   15.21       SNIa 56 1
5 SN 1999ej SN* 01 22 57.38 +33 27 58.0   15.65       SNIa 53 1
6 SN 1993ae SN* 01 29 48.91 -01 58 37.1   15.46 15.31     SNIa 48 1
7 SN 1999dk SN* 01 31 26.92 +14 17 05.7   15.06       SNIa 65 1
8 SN 1998es SN* 01 37 17.60 +05 52 50.6   13.99       SNIapec 106 1
9 SN 1996bo SN* 01 48 22.86 +11 31 15.1   16.17       SNIa 68 1
10 SN 1999dq SN* 02 33 59.68 +20 58 30.4   14.68       SNIapec 95 1
11 SN 1995ak SN* 02 45 48.83 +03 13 50.1   16.23 16.07     SNIa 53 1
12 SN 1992bc SN* 03 05 16.05 -39 33 34.6   15.15 15.17     SNIa 122 1
13 SN 1992bs SN* 03 29 27.20 -37 16 18.9     18.28     SNIa 53 1
14 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 387 1
15 SN 1992bp SN* 03 36 37.95 -18 21 13.7   18.53 18.37     SNIa 62 1
16 SN 1990Y SN* 03 37 22.59 -33 02 34.7   17.69 17.7     SNIa 44 1
17 SN 2001el SN* 03 44 30.60 -44 38 23.4   12.81       SNIa 245 1
18 SN 1992bh SN* 04 59 27.55 -58 49 44.2   17.68 17.55     SNIa 60 1
19 SN 1993ac SN* 05 46 23.58 +63 22 07.1   18.36 17.71     SNIa 52 1
20 SN 1997E SN* 06 47 38.10 +74 29 51.0   15.59       SNIa 44 1
21 SN 1997do SN* 07 26 42.50 +47 05 36.0   14.27       SNIa 60 1
22 SN 1992bg SN* 07 41 56.55 -62 31 10.0   17.39 16.66     SNIa 51 2
23 SN 1999aa SN* 08 27 42.03 +21 29 14.8           SNIap 233 1
24 SN 1996Z SN* 09 36 44.82 -21 08 51.7   14.63 14.2     SNIa 37 1
25 SN 1995D SN* 09 40 54.753 +05 08 26.16   13.42 13.22     SNIa 141 1
26 SN 1995al SN* 09 50 55.97 +33 33 09.4   13.36 13.22     SNIa 92 1
27 SN 1993ag SN* 10 03 35.00 -35 27 47.6   18.30 17.78     SNIa 64 1
28 SN 1992J SN* 10 09 00.30 -26 38 24.4   17.88 17.54     SNIa 45 1
29 SN 1991S SN* 10 29 27.7 +22 00 43   17.78 17.69     SNIa 52 1
30 SN 1993B SN* 10 34 51.38 -34 26 30.0   18.81 18.39     SNIa 52 1
31 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 299 1
32 SN 1994ae SN* 10 47 01.94 +17 16 30.8   13.20 12.99     SNIa 158 1
33 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 345 1
34 SN 2001ba SN* 11 38 01.76 -32 19 51.0   16.44       SNIa 59 1
35 SN 2001V SN* 11 57 24.93 +25 12 09.0   14.62       SNIa 89 1
36 SN 1994M SN* 12 31 08.61 +00 36 19.6   16.31 16.24     SNIa 84 1
37 SN 1994S SN* 12 31 21.85 +29 08 04.0   14.80 14.77     SNIa 97 1
38 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 525 1
39 SN 1992P SN* 12 42 48.93 +10 21 36.2   16.14 16.09     SNIa 71 1
40 SN 1997Y SN* 12 45 31.40 +54 44 17.0   15.28       SNIa 48 1
41 SN 1998ab SN* 12 48 47.24 +41 55 28.3   15.94       SNIapec 60 1
42 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 181 1
43 SN 1994T SN* 13 21 30.73 -02 08 56.5   17.31 17.15     SNIa 47 1
44 SN 1991U SN* 13 23 22.00 -26 06 30.0   16.67 16.35     SNIa 51 1
45 SN 1992ag SN* 13 24 09.85 -23 52 43.7   16.64 16.15     SNIa 60 1
46 SN 1993O SN* 13 31 07.87 -33 12 50.5   17.79 17.96     SNIa 65 1
47 SN 2000ca SN* 13 35 22.98 -34 09 37.0   15.90       SNIa 48 2
48 SN 1996bk SN* 13 46 57.98 +60 58 12.9   14.89       SNIa 34 1
49 SN 1996C SN* 13 50 48.60 +49 19 07.1   16.53 16.48     SNIa 66 1
50 SN 1993H SN* 13 52 50.34 -30 42 23.3   16.99       SNIa 83 1
51 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SNIa 323 1
52 SN 1996ab SN* 15 21 08.35 +27 55 36.8   19.47 19.55     SNIa 33 1
53 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SNIa 250 1
54 SN 1999cc SN* 16 02 42.03 +37 21 34.4   16.78       SNIa 64 1
55 SN 1999ac SN* 16 07 15.01 +07 58 20.4   14.34       SNIap 124 1
56 SN 1994Q SN* 16 49 51.13 +40 25 55.8   16.35 16.31     SNIa 53 1
57 SN 2002er SN* 17 11 29.88 +07 59 44.8   14.25       SNIa 123 1
58 SN 1990O SN* 17 15 35.92 +16 19 25.8   16.59 16.22     SNIa 70 1
59 SN 1998dx SN* 18 11 11.89 +49 51 40.7   17.71       SNIa 39 1
60 SN 1998V SN* 18 22 37.40 +15 42 08.4   15.07       SNIa 59 1
61 SN 2001cn SN* 18 46 17.84 -65 45 41.8   15.40       SNIa 33 1
62 SN 1990T SN* 19 59 02.29 -56 15 30.1   17.27 17.03     SNIa 49 1
63 SN 1991ag SN* 20 00 08.61 -55 22 03.1   14.67 14.39     SNIa 54 1
64 SN 1992al SN* 20 45 56.49 -51 23 39.9   14.59 14.54     SNIa 79 2
65 SN 1992ae SN* 21 28 17.94 -61 33 01.4   18.64 18.45     SNIa 62 2
66 SN 1998eg SN* 22 39 30.29 +08 36 20.6   16.11       SNIa 52 1
67 SN 1995ac SN* 22 45 34.14 -08 45 04.7   17.23 17.10     SNIapec 74 2
68 SN 1993L SN* 22 57 52.86 -35 51 26.8     13.20     SNIa 31 1
69 SN 1998dh SN* 23 14 40.31 +04 32 14.1   13.85       SNIa 72 1
70 SN 1992bl SN* 23 15 13.09 -44 44 35.7   17.34 17.33     SNIa 59 1
71 SN 1997dg SN* 23 40 14.21 +26 12 11.8   17.20       SNIa 39 2

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2021.06.20-01:49:08

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