2008ApJ...682..724B

Query : 2008ApJ...682..724B

2008ApJ...682..724B - Astrophys. J., 682, 724-736 (2008/August-1)

Time dilation in type Ia supernova spectra at high redshift.

BLONDIN S., DAVIS T.M., KRISCIUNAS K., SCHMIDT B.P., SOLLERMAN J., WOOD-VASEY W.M., BECKER A.C., CHALLIS P., CLOCCHIATTI A., DAMKE G., FILIPPENKO A.V., FOLEY R.J., GARNAVICH P.M., JHA S.W., KIRSHNER R.P., LEIBUNDGUT B., LI W., MATHESON T., MIKNAITIS G., NARAYAN G., PIGNATA G., REST A., RIESS A.G., SILVERMAN J.M., SMITH R.C., SPYROMILIO J., STRITZINGER M., STUBBS C.W., SUNTZEFF N.B., TONRY J.L., TUCKER B.E. and ZENTENO A.

Abstract (from CDS):

We present multiepoch spectra of 13 high-redshift Type Ia supernovae (SNe Ia) drawn from the literature, the ESSENCE and SNLS projects, and our own separate dedicated program on the ESO Very Large Telescope. We use the Supernova Identification (SNID) code of Blondin and Tonry to determine the spectral ages in the supernova rest frame. Comparison with the observed elapsed time yields an apparent aging rate consistent with the 1/(1+z) factor (where z is the redshift) expected in a homogeneous, isotropic, expanding universe. These measurements thus confirm the expansion hypothesis, while unambiguously excluding models that predict no time dilation, such as Zwicky's ``tired light'' hypothesis. We also test for power-law dependencies of the aging rate on redshift. The best-fit exponent for these models is consistent with the expected 1/(1+z) factor.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Miscellaneous - Stars: Supernovae: General

Simbad objects: 57

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Number of rows : 57
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 2002jd SN* 00 28 38.3900 +00 40 29.290       22.0   SNIa 11 1
2 Anon J002838+0040 G 00 28 38.40 +00 40 29.3           ~ 1 0
3 SN 2006tk SN* 01 07 52.6400 +00 27 55.293       21.3   SNIa 7 1
4 Anon J010752+0027 G 01 07 52.64 +00 27 55.3           ~ 1 0
5 SN 2007tt SN* 01 11 20.516 -00 12 19.41           SNIa 8 1
6 Anon J011120-0012 G 01 11 20.531 -00 12 19.85           ~ 2 0
7 SN 2007un SN* 01 14 22.7360 +01 07 45.632           SNIa 6 1
8 Anon J011422+0107 G 01 14 22.740 +01 07 46.01           ~ 2 0
9 SN 1999ej SN* 01 22 57.38 +33 27 58.0   15.65       SNIa 77 1
10 SN 2000cx SN* 01 24 46.150 +09 30 30.89           SNIap 227 1
11 SN 1998dm SN* 01 26 13.97 -06 06 14.0   14.70       SNIa 71 1
12 SN 2002ic SN* 01 30 02.55 +21 53 06.9     18.5     SNIapec 252 1
13 SN 2001eh SN* 01 38 12.10 +41 39 18.8     16.5     SNIa 59 1
14 SN 2007tg SN* 02 06 10.5050 -04 42 23.286           SNIa 5 1
15 Anon J020610-0442 G 02 06 10.667 -04 42 19.03           ~ 2 0
16 SN 2006sc SN* 02 10 10.2260 -04 44 12.545       21.8   SNIa 7 1
17 SDSS J021010.23-044412.4 G 02 10 10.235 -04 44 12.41           ~ 5 0
18 SN 1996bj SN* 02 11 49.53 +01 24 51.0       22.6   SNIa 11 1
19 [HSC96] J021149.53+012451.0 G 02 11 49.53 +01 24 51.0           ~ 2 1
20 SN 2003js SN* 02 29 52.1520 -08 32 28.155       22.0   SNIa 18 1
21 Anon J022952-0832 G 02 29 52.182 -08 32 28.16           ~ 2 0
22 SN 2006mk SN* 02 30 16.9110 -08 40 47.345       22.42   SNIa 6 1
23 Anon J023016-0840 G 02 30 17.170 -08 40 51.36           ~ 3 0
24 SN 2002iz SN* 02 31 20.7450 -08 36 13.414       22.1   SNIa 20 1
25 Anon J023120-0836 G 02 31 20.848 -08 36 13.41           ~ 5 1
26 SN 1999gp SN* 02 31 39.15 +39 22 52.3   16.04       SNIa 98 1
27 SN 1999dq SN* 02 33 59.68 +20 58 30.4   14.68       SNIapec 126 1
28 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
29 SN 2006lf SN* 04 38 29.49 +44 02 01.5     18.0     SNIa 65 1
30 SN 2001ep SN* 04 57 00.26 -04 45 40.2     17.1     SNIa 78 1
31 SN 2000fa SN* 07 15 29.88 +23 25 42.4   15.85       SNIa 90 1
32 SN 1997ex SN* 08 24 27.87 +03 52 05.8       21.6   SNIa 11 1
33 Anon J082427+0352 G 08 24 28.097 +03 52 04.28           ~ 3 1
34 SNLS 04D2an SN* 10 00 52.309 +02 02 28.43         25.93 SNIa 18 1
35 [HSP2005] J100052.332+020228.73 G 10 00 52.332 +02 02 28.73           ~ 2 1
36 SN 2003cg SN* 10 14 15.97 +03 28 02.5   15.94       SNIa 146 1
37 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
38 SN 2001V SN* 11 57 24.910 +25 12 09.51   14.62       SNIa 115 1
39 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
40 SN 1999cl SN* 12 31 56.01 +14 25 35.3   14.92       SNIa 125 1
41 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
42 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
43 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
44 SN 1998ab SN* 12 48 47.24 +41 55 28.3   15.94       SNIapec 76 1
45 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SNIapec 240 1
46 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
47 SN 1997br SN* 13 20 42.40 -22 02 12.3   14.06       SNIapec 113 1
48 SN 1993H SN* 13 52 50.34 -30 42 23.3   16.99       SNIa 91 1
49 Anon J140200+0500 G 14 02 00.95 +05 00 59.2           ~ 1 0
50 SN 2001go SN* 14 02 00.95 +05 00 59.2         23.7 SNIa 10 1
51 SN 2003fg SN* 14 16 18.924 +52 14 53.68           SNIa 141 1
52 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SNIa 374 1
53 SN 2006gz SN* 18 10 26.33 +30 59 44.4   16.6       SNIa 156 1
54 SN 1998V SN* 18 22 37.40 +15 42 08.4   15.07       SNIa 72 1
55 SN 2002ha SN* 20 47 18.596 +00 18 45.36     17.3     SNIa 89 1
56 SN 1999ee SN* 22 16 09.40 -36 50 31.5   14.85       SNIa 201 1
57 SN 1998eg SN* 22 39 30.29 +08 36 20.6   16.11       SNIa 68 1

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