2001ApJ...546..734L

Query : 2001ApJ...546..734L

2001ApJ...546..734L - Astrophys. J., 546, 734-743 (2001/January-2)

A high intrinsic peculiarity rate among type Ia supernovae.

LI W., FILIPPENKO A.V., TREFFERS R.R., RIESS A.G., HU J. and QIU Y.

Abstract (from CDS):

We have compiled a sample of 45 Type Ia supernovae (SNe Ia) discovered by the Lick Observatory Supernova Search (LOSS) and the Beijing Astronomical Observatory Supernova Survey (BAOSS), and determined the rate of spectroscopically peculiar SNe Ia (i.e., SN 1986G-like, SN 1991bg-like, and SN 1991T-like objects) and the luminosity function of SNe Ia. Because of the nature of the two surveys (distance-limited with small baselines and deep limiting magnitudes), nearly all SNe Ia have been discovered in the sample galaxies of LOSS and BAOSS; thus, the observed peculiarity rate and luminosity function of SNe Ia are intrinsic. We find that 36%±9% of nearby SNe Ia are peculiar; specifically, the luminosity function of SNe Ia consists of 20% SN 1991T-like, 64% normal, and 16% SN 1991bg-like objects. We have compared our results to those found by earlier studies, and to those found at high redshift. The apparent dearth of SN 1991T-like objects at high redshift may be due to extinction, and especially to the difficulty of recognizing them from spectra obtained past maximum brightness or from spectra with low signal-to-noise ratios. Implications of the high peculiarity rate for the progenitor systems of SNe Ia are also briefly discussed.

Abstract Copyright: ∼

Journal keyword(s): Methods: Statistical - Stars: Evolution - Stars: Supernovae: General

Simbad objects: 100

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Number of rows : 100
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 Z 382-35 EmG 00 14 31.872 -00 44 15.63   14.80   14.1 13.8 ~ 120 0
2 SN 1998dk SN* 00 14 32.16 -00 44 10.9   14.93       SNIa 65 1
3 MCG-01-02-001 Sy1 00 20 00.066 -06 20 01.36   14   13.43   ~ 43 0
4 SN 1999cw SN* 00 20 01.46 -06 20 03.6     14.2     SNIa 34 1
5 NGC 105 G 00 25 16.7518787184 +12 53 01.913865576   14.1       ~ 73 0
6 SN 1997cw SN* 00 25 17.27 +12 53 06.2   16.00       SNIapec 48 1
7 NGC 252 GiG 00 48 01.5069897792 +27 37 26.093379360   13.4 12.49     ~ 89 0
8 SN 1998de SN* 00 48 06.88 +27 37 28.5   17.56       SNIapec 92 1
9 Z 501-71 GiG 01 03 26.3722455744 +32 14 14.560703628   15.0       ~ 66 0
10 SN 1998ef SN* 01 03 26.87 +32 14 12.4   15.21       SNIa 75 1
11 MCG-01-04-004 Sy1 01 09 26.655 -02 51 10.00   16   15.06   ~ 13 0
12 NGC 495 GiG 01 22 55.9580753040 +33 28 17.045070636   14.0       ~ 98 0
13 SN 1999ej SN* 01 22 57.38 +33 27 58.0   15.65       SNIa 77 1
14 SN 1998dm SN* 01 26 13.97 -06 06 14.0   14.70       SNIa 71 1
15 Z 436-69 LSB 01 31 26.634 +14 16 38.99   15.1       ~ 83 0
16 SN 1999dk SN* 01 31 26.92 +14 17 05.7   15.06       SNIa 83 1
17 NGC 632 GiC 01 37 17.5654465512 +05 52 38.153863848   13.5       ~ 130 1
18 SN 1998es SN* 01 37 17.60 +05 52 50.6   13.99       SNIapec 128 1
19 NGC 788 Sy2 02 01 06.4628889816 -06 48 57.149808084   13.71 12.76 11.79   ~ 291 0
20 SN 1998dj SN* 02 01 06.92 -06 49 04.8     16.1     SNIa 14 1
21 SN 1999gp SN* 02 31 39.15 +39 22 52.3   16.04       SNIa 98 1
22 Z 523-54 G 02 31 40.0741701792 +39 22 41.829409200   14.3       ~ 56 0
23 SN 1999dq SN* 02 33 59.68 +20 58 30.4   14.68       SNIapec 126 1
24 NGC 976 GiG 02 34 00.0380649672 +20 58 36.291595584   12.9       ~ 124 0
25 SN 1992bc SN* 03 05 16.05 -39 33 34.6   15.15 15.17     SNIa 130 1
26 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
27 SN 1999ek SN* 05 36 31.60 +16 38 17.8   17.97       SNIa 70 1
28 UGC 3329 AG? 05 36 32.3830962168 +16 38 28.839745896   16.0       ~ 48 0
29 NGC 1961 LIN 05 42 04.6327819680 +69 22 42.411028872   11.73 10.99     ~ 362 3
30 SN 1998eb SN* 05 42 12.02 +69 22 26.3     17.8     SNIa 16 1
31 SN 1998ec SN* 06 53 06.11 +50 02 22.1   16.16       SNIa 60 1
32 Z 234-23 GiG 06 53 06.9526355592 +50 02 03.003165384   14.6       ~ 52 0
33 Z 234-63 GiG 07 08 13.9716368544 +46 06 57.147355548   13.72 12.68     ~ 39 0
34 SN 1998an SN* 07 08 17.13 +46 06 54.3     15.3     SNIa 12 1
35 SN 1997do SN* 07 26 42.50 +47 05 36.0   14.27       SNIa 74 1
36 Z 235-15 AG? 07 26 42.7115954976 +47 05 38.765551884   13.6       ~ 57 0
37 NGC 2595 H2G 08 27 42.0263359560 +21 28 44.704954668   13.9       ~ 198 0
38 SN 1999aa SN* 08 27 42.03 +21 29 14.8           SNIap 274 1
39 LEDA 24106 G 08 35 10.9629716088 -08 23 13.604117208   15.25   14.21   ~ 18 0
40 SN 1999gm SN* 08 35 11.73 -08 23 15.4     17.3     SNIa 10 1
41 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 533 2
42 SN 1999gd SN* 08 38 24.61 +25 45 33.1   16.94       SNIa 72 1
43 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 307 1
44 NGC 2841 LIN 09 22 02.6778711696 +50 58 35.737082868 10.43 10.09 9.22     ~ 1113 1
45 SN 1999gf SN* 10 13 37.00 -00 56 09.6     18.2     SNIa 12 1
46 Z 8-75 BiC 10 13 38.2582731024 -00 55 31.510821720   13.68       ~ 71 2
47 NGC 3147 Sy2 10 16 53.6388580752 +73 24 02.641798224   11.43 10.61     ~ 533 2
48 SN 1997bq SN* 10 17 05.33 +73 23 02.1   14.57       SNIa 84 1
49 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 862 1
50 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 328 1
51 SN 1999bh SN* 10 54 46.97 +61 17 20.0     16.8     SNIa 28 1
52 NGC 3435 AG? 10 54 48.3299264640 +61 17 23.483165532   14.2       ~ 50 0
53 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
54 SN 1998aq SN* 11 56 25.87 +55 07 43.2   12.31 14.9     SNIa 197 1
55 NGC 3982 Sy2 11 56 28.1445516072 +55 07 30.859586652   12.20 11.70 11.18   ~ 588 1
56 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
57 SN 1998bn SN* 12 29 18.80 -23 09 50.5     17.4     SNIa 17 1
58 NGC 4462 AG? 12 29 21.1323465768 -23 10 00.017914188   12.81 11.54 11.26   ~ 85 0
59 SN 1999cl SN* 12 31 56.01 +14 25 35.3   14.92       SNIa 125 1
60 M 88 Sy2 12 31 59.1525062448 +14 25 13.148971824   14.33 13.18     ~ 843 1
61 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
62 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
63 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
64 SN 1997Y SN* 12 45 31.40 +54 44 17.0   15.28       SNIa 61 1
65 NGC 4675 GiG 12 45 31.91520 +54 44 15.1910   15.4       ~ 66 1
66 NGC 4704 Sy2 12 48 46.4268385512 +41 55 16.509765900   14.8       ~ 77 0
67 SN 1998ab SN* 12 48 47.24 +41 55 28.3   15.94       SNIapec 76 1
68 SN 1997br SN* 13 20 42.40 -22 02 12.3   14.06       SNIapec 113 1
69 MCG-04-32-007 EmG 13 20 43.744 -22 03 03.92   14.66   13.67 13.9 ~ 91 0
70 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
71 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 309 1
72 SN 1998D SN* 14 02 59.28 +34 44 54.3       15.5   SNIa 24 1
73 NGC 5440 GiG 14 03 01.0401315888 +34 45 28.261378260   13.4       ~ 73 0
74 SN 1999cp SN* 14 06 31.30 -05 26 49.0     13.91     SNIa 84 1
75 NGC 5468 GiP 14 06 34.8905851004 -05 27 10.718829772   12.1   11.58 12.2 ~ 160 0
76 NGC 5490 GiG 14 09 57.330 +17 32 43.53   13.4 15.5     ~ 178 1
77 SN 1997cn SN* 14 09 57.76 +17 32 32.3   17.2 16.7     SNIapec 91 1
78 Z 77-39 GiG 15 11 28.0456214856 +13 29 00.793653828   15.0       ~ 28 0
79 SN 1999dg SN* 15 11 28.41 +13 29 05.7     16.7     SNIa 30 2
80 NGC 6063 AG? 16 07 13.0021003512 +07 58 44.434838856   14.1       ~ 165 0
81 SN 1999ac SN* 16 07 15.01 +07 58 20.4   14.34       SNIap 144 1
82 SN 1999da SN* 17 35 22.96 +60 48 49.3   16.84       SNIa 68 1
83 NGC 6411 AG? 17 35 32.8446342384 +60 48 48.236693796   13.2       ~ 119 0
84 SN 1998bp SN* 17 54 50.74 +18 19 50.5   15.73       SNIa 77 1
85 NGC 6495 GiG 17 54 50.7755269728 +18 19 36.669498852   13.8       ~ 60 0
86 UGC 11149 G 18 11 09.7439290440 +49 51 52.814417148   16.0       ~ 28 0
87 SN 1998dx SN* 18 11 11.89 +49 51 40.7   17.71       SNIa 52 1
88 SN 1998V SN* 18 22 37.40 +15 42 08.4   15.07       SNIa 72 1
89 NGC 6627 AG? 18 22 38.921 +15 41 52.73   14.5       ~ 54 0
90 SN 1999ee SN* 22 16 09.40 -36 50 31.5   14.85       SNIa 201 1
91 Z 496-7 GiG 22 53 29.4272104224 +31 38 42.627697404   14.7       ~ 51 0
92 SN 1999do SN* 22 53 29.87 +31 38 42.9     18.0     SNIa 16 1
93 SN 1997dt SN* 23 00 02.930 +15 58 50.92           SNIa 58 1
94 NGC 7448 AG? 23 00 03.589 +15 58 49.31   12.0       ~ 239 0
95 SN 1998dh SN* 23 14 40.31 +04 32 14.1   13.85       SNIa 92 1
96 NGC 7541 GiG 23 14 43.857 +04 32 02.04   12.7       ~ 333 1
97 NGC 7674A G 23 27 58.7553926496 +08 46 57.872148456   16.10   14.38   ~ 64 0
98 SN 2000A SN* 23 27 58.90 +08 47 02.1     16.5     SNIa 13 1
99 LEDA 5065169 G 23 40 14.178 +26 12 10.58           ~ 10 1
100 SN 1997dg SN* 23 40 14.21 +26 12 11.8   17.20       SNIa 50 2

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