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 - 2026 		#notes
1 SN 2019iep SN* 00 06 18.630 +25 27 45.51           SNIbn 3 0
2 SN 2004fe SN* 00 30 11.27 +02 05 23.5     18.1     SNIc 55 1
3 SN 2006ep SN* 00 41 24.88 +25 29 46.7     17.8     SNIb 52 1
4 SN 2007pk SN* 01 31 47.07 +33 36 54.1     17.0     SNIInpec 44 1
5 SN 2016gkg SN* 01 34 14.46 -29 26 25.0           SNII 126 0
6 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 587 1
7 SN 2013ej SN* 01 36 48.16 +15 45 31.0           SNIIP 248 0
8 SN 2005hg SN* 01 55 41.87 +46 47 47.4     18.6     SNIb 42 1
9 SN 2015ap SN* 02 05 13.32 +06 06 08.4           SNII 29 1
10 SN 2011fu SN* 02 08 21.40 +41 29 12.3           SNII 74 1
11 SN 2004gv SN* 02 13 37.42 -00 43 05.8     17.6     SNIb 47 1
12 SN 2009ig SN* 02 38 11.62 -01 18 45.3           SNIa-norm 168 1
13 SN 2009iz SN* 02 42 15.41 +42 23 50.1           SNIb 32 1
14 SN 2007gr SN* 02 43 27.98 +37 20 44.7       12.77   SNIc 265 1
15 SN 2007Y SN* 03 02 35.92 -22 53 50.1     17.5     SNIb 135 1
16 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 1007 1
17 SN 2012fr SN* 03 33 35.99 -36 07 37.7           SNIa-norm 178 1
18 SN 2017gpn SN* 03 37 44.97 +72 31 59.0           SNIIb 11 0
19 SN 2009bw SN* 03 56 06.92 +72 55 40.9           SNII 70 1
20 SN 2009ib SN* 04 17 40.09 -62 46 40.3           SNIIP 70 1
21 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 727 1
22 SN 2012ap SN* 05 00 13.72 -03 20 51.2           SNIc 86 2
23 SN 2009kr SN* 05 12 03.30 -15 41 52.2           SNII 93 1
24 SN 2004gq SN* 05 12 04.81 -15 40 54.2     15.5     SNIb 105 1
25 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
26 SN 2010al SN* 08 14 15.91 +18 26 18.2           SNIInpec 77 1
27 SN 2008D SN* 09 09 30.625 +33 08 20.16     17.5     SNIb 458 1
28 SN 2007uy SN* 09 09 35.40 +33 07 09.9     17.2     SNIbpec 104 1
29 SN 2010jl SN* 09 42 53.33 +09 29 41.8           SNIIn 350 1
30 SN 2006T SN* 09 54 30.21 -25 42 29.3     17.2     SNIIb 67 1
31 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1507 1
32 PSN J10081059+5150570 s*b 10 08 10.58 +51 50 57.1           LBV 110 0
33 SN 2016bkv SN* 10 18 19.31 +41 25 39.3           SNII 66 0
34 SN 2005bf SN* 10 23 56.99 -03 11 29.3     18.0     SNIb 225 1
35 SN 2012A SN* 10 25 07.39 +17 09 14.6           SNIIP 135 0
36 SN 2009bb SN* 10 31 33.92 -39 57 28.2           SNIc 185 1
37 SN 2013ge SN* 10 34 48.46 +21 39 41.9           SNIc 70 1
38 SN 2012aw SN* 10 43 53.735 +11 40 17.63       15   SNIIP 252 1
39 SN 2012ht SN* 10 53 22.8 +16 46 35           SNIa-norm 84 1
40 SN 2014G SN* 10 54 34.13 +54 17 56.9           SNIIL 95 1
41 SN 1996cb SN* 11 03 41.98 +28 54 13.7   14.22       SNIIb 119 1
42 SN 2013am SN* 11 18 56.95 +13 03 49.4           SNII 52 1
43 SN 2008bj SN* 11 51 47.80 +46 52 29.8           SNII 15 1
44 SN 2006aa SN* 11 53 19.89 +20 45 18.2     18.1     SNIIn 30 1
45 SN 2011by SN* 11 55 45.56 +55 19 33.8   12.97 12.95     SNIa-norm 109 1
46 SN 2004aw SN* 11 57 50.24 +25 15 55.1   18.06       SNIc 209 1
47 SN 2004gt SN* 12 01 50.37 -18 52 12.7   19.42 14.9     SNIc 86 1
48 SN 2009dd SN* 12 05 34.10 +50 32 18.6           SNII 46 1
49 SN 2014L SN* 12 18 48.68 +14 24 43.5           SNIc 32 1
50 SN 2008in SN* 12 22 01.77 +04 28 47.5           SNIIP 117 1
51 SN 2013df SN* 12 26 29.33 +31 13 38.3           SNIIb 142 1
52 SN 2008ax SN* 12 30 40.80 +41 38 16.1   23.6 23.5 14.1 22.6 SNIIb 295 1
53 SN 2009N SN* 12 31 09.46 -08 02 56.3           SNIIP 111 1
54 SN 2008aq SN* 12 50 30.36 -10 52 01.3     16.3     SNIIb 55 1
55 SN 2012au SN* 12 54 52.18 -10 14 50.2           SNIb 87 2
56 SN 2016X SN* 12 55 15.50 +00 05 59.7           SNIIb 61 0
57 SN 2011bm SN* 12 56 53.89 +22 22 28.2           SNIc 72 1
58 SN 2016jdw SN* 13 16 19.620 +30 40 32.67           SNIb 10 0
59 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 450 1
60 SN 1994I SN* 13 29 54.072 +47 11 30.50     12.9     SNIc 645 1
61 SN 2011dh SN* 13 30 05.10555 +47 10 10.9227           SNIIb 445 1
62 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa-norm 747 1
63 SN 2019deh SN* 14 05 43.577 +09 30 56.77           SNIbn 11 0
64 SN 2007af SN* 14 22 21.03 -00 23 37.6     15.4     SNIa 185 1
65 SN 2013ab SN* 14 32 44.49 +09 53 12.3           SNIIP 71 1
66 iPTF 13bvn SN* 15 00 00.152 +01 52 53.17           SNIb 211 0
67 SN 2017erp SN* 15 09 14.9 -11 20 03           SNIa-norm 55 0
68 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SNIa 301 1
69 SN 2019aajs SN* 16 11 03.555 +74 21 41.34           SNIbn 5 0
70 SN 2004dk SN* 16 21 48.93 -02 16 17.3   17.789 17.6     SNIb 98 1
71 SN 2017bgu SN* 16 55 59.470 +42 33 36.01           SNIb 12 0
72 SN 2013by SN* 16 59 02.43 -60 11 41.8           SNII 83 1
73 SN 2008bo SN* 18 19 54.34 +74 34 20.9           SNIIb 65 1
74 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1928 2
75 SN 2008fq SN* 20 25 06.19 -24 48 27.6           SNII 47 1
76 SN 2011ei SN* 20 34 22.62 -31 58 23.6           SNIIb 51 1
77 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 547 1
78 SN 2016coi SN* 21 59 04.14 +18 11 10.5           SNIc 67 0
79 SN 1999ex SN* 22 16 07.27 -36 50 53.7   17.35       SNIb 149 2
80 SN 2009ip s*b 22 23 08.26 -28 56 52.4           LBV 406 0
81 SN 2006lc SN* 22 44 24.48 -00 09 53.5 18.3 18.3 17.2     SNIb 51 1
82 SN 2006el SN* 22 47 38.50 +39 52 27.6     18.2     SNIIb 34 1
83 SN 2011hs SN* 22 57 11.77 -43 23 04.8           SNIIb 59 1
84 SN 2015ah SN* 23 00 24.63 +01 37 36.8           SNII 23 1
85 SN 2009jf SN* 23 04 52.98 +12 19 59.5           SNIb 121 1
86 SN 2007ru SN* 23 07 23.19 +43 35 34.1     17.5     SNIc-BL 62 1
87 SN 2013fs SN* 23 19 44.70 +10 11 05.0           SNIIP 159 1
88 SN 2003jd SN* 23 21 03.38 -04 53 45.5   16.34       SNIc-BL 147 1
89 SN 1999dn SN* 23 36 14.70 +02 09 08.8     16.0     SNIb 117 1
90 SN 2007od SN* 23 55 48.68 +18 24 54.8       14.4   SNIIP 147 1

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