2025A&A...694A..10D

Query : 2025A&A...694A..10D

2025A&A...694A..10D - Astronomy and Astrophysics, volume 694A10 (2025/2-1)

ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population.

DIMITRIADIS G., BURGAZ U., DECKERS M., MAGUIRE K., JOHANSSON J., SMITH M., RIGAULT M., FROHMAIER C., SOLLERMAN J., GALBANY L., KIM Y.-L., LIU C., MILLER A.A., NUGENT P.E., ALBURAI A., CHEN P., DHAWAN S., GINOLIN M., GOOBAR A., GROOM S.L., HARVEY L., KENWORTHY W.D., KULKARNI S.R., PHAN K., POPOVIC B., RIDDLE R.L., RUSHOLME B., MULLER-BRAVO T.E., NORDIN J., TERWEL J.H. and TOWNSEND A.

Abstract (from CDS):

The Zwicky Transient Facility SN Ia Data Release 2 (ZTF SN Ia DR2) contains more than 3000 Type Ia supernovae (SNe Ia), providing the largest homogeneous low-redshift sample of SNe Ia. Having at least one spectrum per event, this data collection is ideal for large-scale statistical studies of the photometric, spectroscopic and host-galaxy properties of SNe Ia, particularly of the rarer 'peculiar' sub-classes. In this paper we first present the method we developed to spectroscopically classify the SNe in the sample, and the techniques we used to model their multi-band light curves and explore their photometric properties. We then show a method to distinguish between the peculiar sub-types and the normal SNe Ia. We also explore the properties of their host galaxies and estimate their relative rates, focusing on the peculiar sub-types and their connection to the cosmologically useful SNe Ia. Finally, we discuss the implications of our study with respect to the progenitor systems of the peculiar SN Ia events.

Abstract Copyright: © The Authors 2025

Journal keyword(s): supernovae: general

VizieR on-line data: <Available at CDS (J/A+A/694/A10): tablea2.dat>

Status at CDS : All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 40

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Number of rows : 40
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 2005hk SN* 00 27 50.89 -01 11 53.3   15.92       SNIax 240 1
2 SN 2020aqa SN* 01 09 16.763 +02 12 03.29           SNIa 1 0
3 SN 2002ic SN* 01 30 02.55 +21 53 06.9     18.5     SNIapec 252 1
4 SN 2019myl SN* 02 05 23.300 +30 46 01.31           SNIa 1 0
5 SN 2002es SN* 03 23 47.23 +40 33 53.5     16.4     SNIapec 71 1
6 SN 2018kax SN* 03 28 52.24 -21 53 20.6           SNIa-91T 3 0
7 SN 2019otv SN* 04 43 13.586 -15 33 40.07           SNIa 1 0
8 SN 2011km SN* 08 09 12.87 +46 18 48.8           SNIa 155 0
9 SN 2020yjf SN* 09 42 35.620 -03 29 24.65           ~ 4 0
10 SN 2020xvf SN* 11 11 25.120 +28 32 09.28           SNIa 1 0
11 SN 2020eyj SN* 11 11 47.180 +29 23 06.36           SNIa 33 0
12 SN 2019bka SN* 11 44 25.819 +19 42 47.64           SNIa 5 0
13 SN 2020dg SN* 12 15 37.805 +27 01 28.00           SNIa 2 0
14 SN 2019avn SN* 12 16 11.666 +35 57 17.65           SNIa 1 0
15 SN 2018byg SN* 12 23 21.57 +46 36 08.3           SNIa-pec 33 0
16 SN 2020adhz SN* 12 23 23.887 +42 41 41.48           SNIa 1 0
17 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
18 SN 2019yvq SN* 12 27 21.850 +64 47 59.82           SNIa 49 0
19 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
20 SN 2020kvl SN* 12 53 26.675 -02 26 45.18           SNIa 1 0
21 SN 2020qxp SN* 13 10 37.835 +36 37 43.71           SNIa 16 0
22 SN 2020kyg SN* 13 11 39.603 +22 54 55.85           SNIa 13 0
23 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SNIapec 240 1
24 SN 2018amo SN* 13 14 25.414 +50 58 40.12           SNIa 5 0
25 SN 2019gsc SN* 14 37 45.204 +52 43 36.31           SNIax 22 0
26 SN 2018bat SN* 14 37 49.01 +45 32 57.4           SNIa 3 0
27 SN 2022joj SN* 14 41 40.057 +03 00 24.33           SNIa 6 0
28 SN 2018bhp SN* 14 59 04.57 +19 35 13.9           SNIa 5 0
29 SN 2019dpw SN* 15 35 26.841 +08 23 11.33           SNIa 2 0
30 SN 2009dc SN* 15 51 12.12 +25 42 28.0           SNIa-norm 188 1
31 SN 2006bt SN* 15 56 33.81 +20 03 07.2     17.5     SNIap 114 1
32 SN 2018crl SN* 16 19 38.9643 +49 11 06.640           SNIa 11 0
33 SN 2018fju SN* 16 19 44.230 +50 33 06.72           SNIa 5 0
34 SN 2019cng SN* 17 12 08.818 +55 18 24.55           SNIa 1 0
35 SN 2020jgb SN* 17 53 12.651 -00 51 21.81           SNIa 7 0
36 SN 2020bzg SN* 18 07 59.998 +32 52 40.97           SNIa 1 0
37 SN 2019eix SN* 18 42 42.89 +40 22 07.6           SNIc 6 0
38 ASASSN -15hy SN* 20 10 02.4 -00 44 21           SNIa-norm 33 0
39 SN 2012dn SN* 20 23 36.26 -28 16 43.4           SNIa-norm 64 2
40 SN 2020xqb SN* 21 45 21.190 +02 55 47.96           SNIa 1 0

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