2022ApJ...930...31B

Query : 2022ApJ...930...31B

2022ApJ...930...31B - Astrophys. J., 930, 31-31 (2022/May-1)

Characterization of Supernovae Based on the Spectral-Temporal Energy Distribution: Two Possible SN Ib Subtypes.

BENGYAT O. and GAL-YAM A.

Abstract (from CDS):

A quantitative data-driven comparison among supernovae (SNe) based on their spectral time series combined with multiband photometry is presented. We use an unsupervised random forest algorithm as a metric on a set of 82 well-documented SNe representing all the main spectroscopic types, in order to embed these in an abstract metric space reflecting shared correlations between the objects. We visualize the resulting metric space in 3D, revealing strong agreement with the current spectroscopic classification scheme. The embedding splits Type Ib supernovae into two groups, with one subgroup exhibiting broader, less prominent, higher-velocity lines than the other, possibly suggesting a new SN Ib subclass is required. The method could be to classify newly discovered SNe according to their distance from known event groups, or ultimately to devise a new, spectral-temporal classification scheme. Such an embedding could also depend on hidden parameters that may perhaps be physically interpretable.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Supernovae - Type Ib supernovae - Random Forests - Classification

Simbad objects: 90

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Number of rows : 90
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 2019iep SN* 00 06 18.630 +25 27 45.51           SNIbn 2 0
2 SN 2004fe SN* 00 30 11.27 +02 05 23.5     18.1     SNIc 51 1
3 SN 2006ep SN* 00 41 24.88 +25 29 46.7     17.8     SNIb 44 1
4 SN 2007pk SN* 01 31 47.07 +33 36 54.1     17.0     SNIInpec 37 1
5 SN 2016gkg SN* 01 34 14.46 -29 26 25.0           SNIIb 92 0
6 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 564 1
7 SN 2013ej SN* 01 36 48.16 +15 45 31.0           SNIIP 200 0
8 SN 2005hg SN* 01 55 41.87 +46 47 47.4     18.6     SNIb 37 1
9 SN 2015ap SN* 02 05 13.32 +06 06 08.4           SNIb 17 1
10 SN 2011fu SN* 02 08 21.40 +41 29 12.3           SNII 56 1
11 SN 2004gv SN* 02 13 37.42 -00 43 05.8     17.6     SNIb 40 1
12 SN 2009ig SN* 02 38 11.62 -01 18 45.3           SNIa-norm 149 1
13 SN 2009iz SN* 02 42 15.41 +42 23 50.1           SNIb 25 1
14 SN 2007gr SN* 02 43 27.98 +37 20 44.7       12.77   SNIc 236 1
15 SN 2007Y SN* 03 02 35.92 -22 53 50.1     17.5     SNIb 118 1
16 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 940 1
17 SN 2012fr SN* 03 33 35.99 -36 07 37.7           SNIa-norm 145 1
18 SN 2017gpn SN* 03 37 44.97 +72 31 59.0           SNIIb 8 0
19 SN 2009bw SN* 03 56 06.92 +72 55 40.9           SNII 64 1
20 SN 2009ib SN* 04 17 40.09 -62 46 40.3           SNIIP 54 1
21 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 674 1
22 SN 2012ap SN* 05 00 13.72 -03 20 51.2           SNIc 76 2
23 SN 2009kr SN* 05 12 03.30 -15 41 52.2           SNII 82 1
24 SN 2004gq SN* 05 12 04.81 -15 40 54.2     15.5     SNIb 93 1
25 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4939 2
26 SN 2010al SN* 08 14 15.91 +18 26 18.2           SNIInpec 64 1
27 SN 2008D SN* 09 09 30.625 +33 08 20.16     17.5     SNIb 405 1
28 SN 2007uy SN* 09 09 35.40 +33 07 09.9     17.2     SNIbpec 93 1
29 SN 2010jl SN* 09 42 53.33 +09 29 41.8           SNIIn 292 1
30 SN 2006T SN* 09 54 30.21 -25 42 29.3     17.2     SNIIb 61 1
31 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1418 1
32 PSN J10081059+5150570 s*b 10 08 10.58 +51 50 57.1           LBV 97 0
33 SN 2016bkv SN* 10 18 19.31 +41 25 39.3           SNII 47 0
34 SN 2005bf SN* 10 23 56.99 -03 11 29.3     18.0     SNIb 204 1
35 SN 2012A SN* 10 25 07.39 +17 09 14.6           SNIIP 114 0
36 SN 2009bb SN* 10 31 33.92 -39 57 28.2           SNIc 168 1
37 SN 2013ge SN* 10 34 48.46 +21 39 41.9           SNIc 54 1
38 SN 2012aw SN* 10 43 53.735 +11 40 17.63       15   SNIIP 204 1
39 SN 2012ht SN* 10 53 22.8 +16 46 35           SNIa-norm 63 1
40 SN 2014G SN* 10 54 34.13 +54 17 56.9           SNIIL 62 1
41 SN 1996cb SN* 11 03 41.98 +28 54 13.7   14.22       SNIIb 112 1
42 SN 2013am SN* 11 18 56.95 +13 03 49.4           SNII 40 1
43 SN 2008bj SN* 11 51 47.80 +46 52 29.8           SNII 12 1
44 SN 2006aa SN* 11 53 19.89 +20 45 18.2     18.1     SNIIn 24 1
45 SN 2011by SN* 11 55 45.56 +55 19 33.8   12.97 12.95     SNIa-norm 88 1
46 SN 2004aw SN* 11 57 50.24 +25 15 55.1   18.06       SNIc 200 1
47 SN 2004gt SN* 12 01 50.37 -18 52 12.7   19.42 14.9     SNIc 78 1
48 SN 2009dd SN* 12 05 34.10 +50 32 18.6           SNII 39 1
49 SN 2014L SN* 12 18 48.68 +14 24 43.5           SNIc 24 1
50 SN 2008in SN* 12 22 01.77 +04 28 47.5           SNIIP 101 1
51 SN 2013df SN* 12 26 29.33 +31 13 38.3           SNIIb 114 1
52 SN 2008ax SN* 12 30 40.80 +41 38 16.1   23.6 23.5 14.1 22.6 SNIIb 260 1
53 SN 2009N SN* 12 31 09.46 -08 02 56.3           SNIIP 94 1
54 SN 2008aq SN* 12 50 30.36 -10 52 01.3     16.3     SNIIb 47 1
55 SN 2012au SN* 12 54 52.18 -10 14 50.2           SNIb 67 2
56 SN 2016X SN* 12 55 15.50 +00 05 59.7           SNIIP 43 0
57 SN 2011bm SN* 12 56 53.89 +22 22 28.2           SNIc 64 1
58 SN 2016jdw SN* 13 16 19.620 +30 40 32.67           SNIb 6 0
59 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 408 1
60 SN 1994I SN* 13 29 54.072 +47 11 30.50     12.9     SNIc 625 1
61 SN 2011dh SN* 13 30 05.10555 +47 10 10.9227           SNIIb 390 1
62 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa-norm 674 1
63 SN 2019deh SN* 14 05 43.577 +09 30 56.77           SNIbn 6 0
64 SN 2007af SN* 14 22 21.03 -00 23 37.6     15.4     SNIa 164 1
65 SN 2013ab SN* 14 32 44.49 +09 53 12.3           SNIIP 59 1
66 iPTF 13bvn SN* 15 00 00.152 +01 52 53.17           SNIb 171 0
67 SN 2017erp SN* 15 09 14.9 -11 20 03           SNIa-norm 38 0
68 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SNIa 280 1
69 SN 2019aajs SN* 16 11 03.555 +74 21 41.34           SNIbn 3 0
70 SN 2004dk SN* 16 21 48.93 -02 16 17.3   17.789 17.6     SNIb 81 1
71 SN 2017bgu SN* 16 55 59.470 +42 33 36.01           SNIb 7 0
72 SN 2013by SN* 16 59 02.43 -60 11 41.8           SNII 64 1
73 SN 2008bo SN* 18 19 54.34 +74 34 20.9           SNIIb 56 1
74 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1821 2
75 SN 2008fq SN* 20 25 06.19 -24 48 27.6           SNII 39 1
76 SN 2011ei SN* 20 34 22.62 -31 58 23.6           SNIIb 38 1
77 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 489 1
78 SN 2016coi SN* 21 59 04.14 +18 11 10.5           SNIc 57 0
79 SN 1999ex SN* 22 16 07.27 -36 50 53.7   17.35       SNIb 141 2
80 SN 2009ip s*b 22 23 08.26 -28 56 52.4           LBV 348 0
81 SN 2006lc SN* 22 44 24.48 -00 09 53.5 18.3 18.3 17.2     SNIb 47 1
82 SN 2006el SN* 22 47 38.50 +39 52 27.6     18.2     SNIIb 31 1
83 SN 2011hs SN* 22 57 11.77 -43 23 04.8           SNIIb 50 1
84 SN 2015ah SN* 23 00 24.63 +01 37 36.8           SNIb: 17 1
85 SN 2009jf SN* 23 04 52.98 +12 19 59.5           SNIb 106 1
86 SN 2007ru SN* 23 07 23.19 +43 35 34.1     17.5     SNIc-BL 48 1
87 SN 2013fs SN* 23 19 44.70 +10 11 05.0           SNIIP 111 1
88 SN 2003jd SN* 23 21 03.38 -04 53 45.5   16.34       SNIc-BL 139 1
89 SN 1999dn SN* 23 36 14.70 +02 09 08.8     16.0     SNIb 109 1
90 SN 2007od SN* 23 55 48.68 +18 24 54.8       14.4   SNIIP 130 1

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