2002MNRAS.332..352R

Query : 2002MNRAS.332..352R

2002MNRAS.332..352R - Mon. Not. R. Astron. Soc., 332, 352-360 (2002/May-2)

Do Type Ia supernovae prove Λ>0 ?

ROWAN-ROBINSON M.

Abstract (from CDS):

The evidence for positive cosmological constant Λ from Type Ia supernovae is re-examined.

Both high redshift supernova teams are found to underestimate the effects of host galaxy extinction. The evidence for an absolute magnitude-decay time relation is much weakened if supernovae not observed before maximum light are excluded. Inclusion of such objects artificially suppresses the scatter about the mean relation.

With a consistent treatment of host galaxy extinction and elimination of supernovae not observed before maximum, the evidence for a positive lambda is not very significant (3-4σ). A factor which may contribute to apparent faintness of high-z supernovae is evolution of the host galaxy extinction with z

The Hubble diagram using all high-z distance estimates, including SZ clusters and gravitational lens time-delay estimates, does not appear inconsistent with an Ωo =1 model.

Although a positive Λ can provide an (albeit physically unmotivated) resolution of the low curvature implied by cosmic microwave background (CMB) experiments and evidence that Ωo <1 from large-scale structure, the direct evidence from Type Ia supernovae seems at present to be inconclusive.


Abstract Copyright: 2002 Blackwell Science Ltd

Journal keyword(s): supernovae: general - cosmological parameters - cosmology: observations

Simbad objects: 106

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Number of rows : 106
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 1995aq SN* 00 29 04.26 +07 51 20.0       22.60   SNI: 17 1
2 SN 1996bl SN* 00 36 17.97 +11 23 40.5   17.05 16.63     SNIa 69 1
3 SN 1995ar SN* 01 01 20.41 +04 18 33.8       22.71   SNI: 22 1
4 SN 1995as SN* 01 01 35.30 +04 26 14.8       23.02   SNI: 23 1
5 SN 1995at SN* 01 04 50.94 +04 33 53.0       22.62   SNI: 17 1
6 SN 1992bo SN* 01 21 58.44 -34 12 43.5   15.85 15.76     SNIa 119 1
7 SN 1996bo SN* 01 48 22.86 +11 31 15.1           SNIa 78 1
8 SN 1995aw SN* 02 24 55.54 +00 53 07.5       21.75   SNI: 20 1
9 SN 1995ax SN* 02 26 25.80 +00 48 44.2       22.53   SNI: 22 1
10 SN 1976J SN* 02 33 02.9 -10 45 50   14.28 14.19     SNIa 25 1
11 SN 1994am SN* 02 40 02.06 -01 37 14.9       21.82   SNIa: 16 1
12 SN 1994H SN* 02 40 04.70 -01 34 06.4       21.28   SNIa: 24 1
13 SN 1963P SN* 02 46 02.10 -07 34 50.4   14.0       SNIa 54 1
14 SN 1995ay SN* 03 01 07.52 +00 21 19.4       22.64   SNI: 22 1
15 SN 1992bc SN* 03 05 16.05 -39 33 34.6   15.15 15.17     SNIa 130 1
16 SN 1994al SN* 03 06 22.45 +17 18 33.7       22.37   SNIa 17 1
17 SN 1981D SN* 03 22 38.381 -37 13 57.79   12.59 12.33     SNIa 103 1
18 SN 1980N SN* 03 23 00.319 -37 12 49.90   12.5 12.37     SNIa 159 1
19 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
20 SN 1992bp SN* 03 36 37.95 -18 21 13.7   18.53 18.37     SNIa 66 1
21 SN 1990Y SN* 03 37 22.630 -33 02 33.11           SNIa 51 1
22 SN 1997ej SN* 04 17 53.3 -56 36 58           SNIa 7 1
23 SN 1995az SN* 04 40 33.59 -05 30 03.6       22.44   SNI: 24 1
24 SN 1997F SN* 04 55 14.27 -05 51 44.8       22.90   SNIa 22 1
25 SN 1997G SN* 04 58 30.23 -03 16 04.0       23.56   SNIa 16 1
26 SN 1992bh SN* 04 59 27.55 -58 49 44.2   17.68 17.55     SNIa 67 1
27 SN 1997H SN* 04 59 36.57 -03 09 34.6       22.68   SNIa 21 1
28 SN 1997I SN* 04 59 37.31 -03 09 01.6       20.04   SNIa 19 1
29 SN 1997J SN* 07 41 17.83 +09 33 11.4       23.25   SNIa: 15 1
30 SN 1997K SN* 07 54 55.09 +04 19 01.3       23.73   SNIa 15 1
31 SN 1995ba SN* 08 19 06.46 +07 43 21.2       22.08   SNI: 20 1
32 SN 1997L SN* 08 21 57.14 +03 53 35.7       22.93   SNIa 14 1
33 SN 1997N SN* 08 23 50.03 +03 28 52.8       20.19   SNIa 17 1
34 SN 1997af SN* 08 23 52.67 +04 08 44.0       22.96   SNIa 23 1
35 SN 1997O SN* 08 24 02.51 +04 07 33.1       22.97   SNIa 21 1
36 SN 1997ac SN* 08 24 05.21 +04 11 22.6       21.38   SNIa 20 1
37 SN 1996cg SN* 08 24 13.33 +03 24 58.5       22.46   SNIa 22 1
38 SN 1996K SN* 08 24 43.49 -00 21 06.2       23   SNIa 16 1
39 SN 1995D SN* 09 40 54.753 +05 08 26.16   13.42 13.22     SNIa 158 1
40 SN 1995al SN* 09 50 55.97 +33 33 09.4   13.36 13.22     SNIa 115 1
41 SN 1993ag SN* 10 03 35.00 -35 27 47.6   18.30 17.78     SNIa 71 1
42 SN 1996E SN* 10 10 20.28 -12 33 09.2       22.2   SNIa 14 1
43 SN 1996J SN* 10 10 33.21 -12 37 05.2       22.5   SNIa 17 1
44 SN 1994G SN* 10 19 26.68 +50 52 19.4       21.52   SNIa 20 1
45 SN 1983U SN* 10 23 29.31 +19 51 54.9   13.4       SNIa 44 1
46 SN 1992G SN* 10 36 18.57 +37 19 16.2     13.63     SNIa 55 1
47 SN 1986A SN* 10 46 36.54 +13 45 00.6   14.4 14.2     SNIa 60 1
48 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 328 1
49 SN 1994ae SN* 10 47 01.94 +17 16 30.8   13.20 12.99     SNIa 183 1
50 SN 1996cf SN* 10 48 50.96 +00 03 30.4       22.70   SNIa 21 1
51 SN 1997ai SN* 10 48 57.61 +00 31 50.0       22.25   SNIa 22 1
52 SN 1995K SN* 10 50 46.95 -09 15 06.6       22.5   SNIa: 32 1
53 SN 1997aj SN* 10 55 52.98 -03 59 02.3       22.55   SNIa 21 1
54 SN 1997P SN* 10 55 55.93 -03 56 48.2       22.52   SNIa 18 1
55 SN 1997Q SN* 10 56 51.48 -03 58 36.9       22.01   SNIa 16 1
56 SN 1996cl SN* 10 56 59.13 -03 37 36.4       23.53   SNIa: 24 1
57 SN 1997R SN* 10 57 19.23 -03 54 51.7       23.28   SNIa 18 1
58 SN 1997am SN* 10 57 31.52 -03 13 48.3       21.97   SNIa 21 1
59 SN 1997S SN* 10 57 51.59 -03 45 46.9       23.03   SNIa 14 1
60 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
61 SN 1983W SN* 11 20 32.5 +57 46 55   13.3       SNIa 26 1
62 SN 1989A SN* 11 27 59.02 +29 30 21.4   14.10       SNIa 54 1
63 SN 1994F SN* 11 49 59.53 +10 42 57.8       22.08   SNIa 18 1
64 SN 1996U SN* 11 50 33.51 +10 26 45.4       22.2   SNIa 15 1
65 SN 1979B SN* 11 50 43.4 +55 21 33   12.7       SNIa 59 1
66 SN 1996I SN* 12 00 39.43 -00 16 02.4       23.0   SNIa 17 1
67 SN 1987D SN* 12 19 41.07 +02 04 26.6   13.7 13     SNIa 41 1
68 SN 1960R SN* 12 25 24.83 +18 09 19.3   11.60       SNIa 63 1
69 SN 1974G SN* 12 26 27.1 +31 13 24   12.48       SNIa 101 1
70 SN 1996H SN* 12 28 52.78 -00 05 41.0       22.8   SNIa 15 1
71 SN 1994S SN* 12 31 21.85 +29 08 04.0   14.80 14.77     SNIa 120 1
72 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
73 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
74 SN 1997ff SN* 12 36 44.10 +62 12 44.7         26.77 SNIa 67 1
75 SN 1997cj SN* 12 37 04.27 +62 26 24.9         22.8 SNIa 19 1
76 SN 1989M SN* 12 37 40.72 +11 49 25.5   12.56 12.2     SNIa 76 1
77 SN 1992P SN* 12 42 48.93 +10 21 36.2   16.14 16.09     SNIa 78 1
78 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 406 1
79 SN 1996ck SN* 12 48 35.19 -00 46 03.0       23.08   SNIa: 15 1
80 SN 1965I SN* 12 52 15 -01 10.9   12.41 12.47     SNIa 56 1
81 SN 1983G SN* 12 52 20.90 -01 12 12.0   12.97       SNIa 110 1
82 SN 1971I SN* 13 15 49.6 +41 59 15   11.60       SNIa 75 1
83 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
84 SN 1992ag SN* 13 24 09.85 -23 52 43.7   16.64 16.15     SNIa 68 1
85 SN 1993O SN* 13 31 07.87 -33 12 50.5   17.79 17.96     SNIa 71 1
86 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 309 1
87 SN 1996ci SN* 13 45 56.16 +02 26 53.7       22.19   SNIa 21 1
88 SN 1997ap SN* 13 47 09.90 +02 23 57.5       23.20   SNIa 26 1
89 SN 1996cn SN* 13 48 27.22 +02 27 46.6       22.58   SNIa 19 1
90 SN 1975G SN* 14 01 18 +54 25.5   14.44       SNIa 22 1
91 SN 1988F SN* 14 28 57 +13 51.3   14.8       SNIa 10 1
92 SN 1996cm SN* 15 30 11.25 +05 55 27.0       22.66   SNIa 20 1
93 SN 1991M SN* 15 58 34.82 +17 27 28.7     14.55     SNIa 66 1
94 SN 1992bi SN* 16 10 12.79 +39 47 12.5       22.12   SNIa 30 1
95 SN 1997ck SN* 16 53 00.27 +35 03 46.4         24 ~ 21 1
96 SN 1997ce SN* 17 07 48.26 +44 01 26.2         23.3 SNIa 17 1
97 SN 1971L SN* 17 32 26 +07 04.0   13.00 12.33     SNIa 63 1
98 SN 1992al SN* 20 45 56.49 -51 23 39.9   14.59 14.54     SNIa 87 2
99 SN 1990af SN* 21 34 58.12 -62 44 07.4   17.91 17.75     SNIa 84 1
100 SN 1978E SN* 22 34 59.7 +37 11 58   15.40       SNIa 21 1
101 SN 1974J SN* 22 38 37 +34 03.8   15.60       SNIa 35 1
102 SN 1994an SN* 22 44 18.87 +00 06 48.7       22.14   SNIa 16 1
103 SN 1993L SN* 22 57 52.86 -35 51 26.8     13.20     SNIa 37 1
104 SN 1970J SN* 23 20 12.69 +08 11 52.4   15.00 14.61     SNIa 69 1
105 SN 1972J SN* 23 21 41 +08 52.5   14.76 14.49     SNIa 48 1
106 SN 1975N SN* 23 38 54 -12 57.2   14.00       SNIa 55 1

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