2020MNRAS.491.2902F

Query : 2020MNRAS.491.2902F

2020MNRAS.491.2902F - Mon. Not. R. Astron. Soc., 491, 2902-2918 (2020/January-2)

Sub-Chandrasekhar progenitors favoured for Type Ia supernovae: evidence from late-time spectroscopy.

FLORS A., SPYROMILIO J., TAUBENBERGER S., BLONDIN S., CARTIER R., LEIBUNDGUT B., DESSART L., DHAWAN S. and HILLEBRANDT W.

Abstract (from CDS):

A non-local-thermodynamic-equilibrium level population model of the first and second ionization stages of iron, nickel, and cobalt is used to fit a sample of XShooter optical + near-infrared (NIR) spectra of Type Ia supernovae (SNe Ia). From the ratio of the NIR lines to the optical lines limits can be placed on the temperature and density of the emission region. We find a similar evolution of these parameters across our sample. Using the evolution of the Fe II 12 570 -7155 Å line as a prior in fits of spectra covering only the optical wavelengths we show that the 7200 Å feature is fully explained by [Fe II] and [Ni II] alone. This approach allows us to determine the abundance of Ni II/Fe II for a large sample of 130 optical spectra of 58 SNe Ia with uncertainties small enough to distinguish between Chandrasekhar mass (MCh) and sub-Chandrasekhar mass (sub-MCh) explosion models. We conclude that the majority (85 per cent) of normal SNe Ia have a Ni/Fe abundance that is in agreement with predictions of sub-MCh explosion simulations of ∼Z☉ progenitors. Only a small fraction (11 per cent) of objects in the sample have a Ni/Fe abundance in agreement with MCh explosion models.

Abstract Copyright: © The Author(s) 2019. Published by Oxford University Press on behalf of The Royal Astronomical Society.

Journal keyword(s): line: formation - line: identification - radiation mechanisms: thermal - supernovae: general - supernovae: individual: SN 2015F - SN 2017bzc

VizieR on-line data: <Available at CDS (J/MNRAS/491/2902): tableb1.dat refs.dat>

Simbad objects: 68

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Number of rows : 68
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 1572A SN* 00 25 21.5 +64 08 27           B8 1254 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 SN 2013ct SN* 01 12 54.9 +00 58 46           SNIa 28 1
4 SN 2008Q SN* 01 24 57.23 +09 33 01.5     16.5     SNIa 58 1
5 SN 2002ic SN* 01 30 02.55 +21 53 06.9     18.5     SNIapec 252 1
6 SN 2009le SN* 02 09 17.14 -23 24 44.8   15.15 15.09     SNIa-norm 44 1
7 SN 2011ek SN* 02 25 48.89 +18 32 00.0   13.84 13.66     SNIapec: 30 1
8 SN 2003gs SN* 02 27 38.36 -01 09 35.4     14.0     SNIap 63 1
9 SN 2009ig SN* 02 38 11.62 -01 18 45.3           SNIa-norm 168 1
10 ASASSN -15be SN* 02 52 46.390 -34 18 52.52           SNIa 15 0
11 SN 2003hv SN* 03 04 09.32 -26 05 07.5     12.5     SNIa 134 1
12 SN 2015cp SN* 03 09 12.7484496240 +27 31 16.926356064           SNIa 31 0
13 SN 2006dd SN* 03 22 41.64 -37 12 13.2   14.5 15.0     SNIa 87 1
14 SN 2012fr SN* 03 33 35.99 -36 07 37.7           SNIa-norm 178 1
15 SN 2011iv SN* 03 38 51.4 -35 35 32           SNIa-norm 96 1
16 SN 2013gy SN* 03 42 16.9 -04 43 18           SNIa-norm 55 1
17 SN 2018fhw SN* 04 18 06.266 -63 36 54.25           SNIa 47 0
18 SN 2010kg SN* 04 40 08.40 +07 21 00.0           SNIa-norm 32 1
19 SN 2011K SN* 04 45 30.38 -07 20 52.7           SNIa-norm 11 1
20 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
21 SN 2003kf SN* 06 04 35.42 -12 37 42.8     14.8     SNIa 76 1
22 SN 2012hr SN* 06 21 38.46 -59 42 50.6           SNIa 35 1
23 SN 2015F SN* 07 36 15.76 -69 30 23.0           SNIa 100 1
24 NGC 2442 LIN 07 36 23.7700545576 -69 31 50.997856332 11.47 11.15 10.42 9.71 10.4 ~ 243 1
25 SN 1999aa SN* 08 27 42.03 +21 29 14.8           SNIap 274 1
26 SN 1993Z SN* 09 10 19.60 +07 01 40.2       13.9   SNIa 27 1
27 SN 2011at SN* 09 28 57.56 -14 48 20.6           SNIa 16 1
28 SN 1995D SN* 09 40 54.753 +05 08 26.16   13.42 13.22     SNIa 158 1
29 SN 2010hg SN* 09 46 13.7 -30 27 13           SNIa 9 1
30 SN 2014J SN* 09 55 42.12 +69 40 25.9           SNIa-norm 456 1
31 SN 2003cg SN* 10 14 15.97 +03 28 02.5   15.94       SNIa 146 1
32 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 325 1
33 SN 2010ev SN* 10 25 28.99 -39 49 51.2           SNIa 45 1
34 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 328 1
35 SN 1994ae SN* 10 47 01.94 +17 16 30.8   13.20 12.99     SNIa 183 1
36 SN 2012ht SN* 10 53 22.8 +16 46 35           SNIa-norm 84 1
37 MASTER OT J114925.48-050713.8 SN* 11 49 25.48 -05 07 13.8           SNIa 11 0
38 SN 2011ae SN* 11 54 49.25 -16 51 43.6           SNIa 17 1
39 SN 2011by SN* 11 55 45.56 +55 19 33.8   12.97 12.95     SNIa-norm 109 1
40 SN 1998aq SN* 11 56 25.87 +55 07 43.2   12.31 14.9     SNIa 197 1
41 SN 2007sr SN* 12 01 52.80 -18 58 21.7     12.79     SNIa 100 1
42 SN 2006X SN* 12 22 53.93 +15 48 32.0     15.3     SNIa 347 1
43 SN 2012cg SN* 12 27 12.83 +09 25 13.2           SNIa-norm 224 1
44 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
45 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 406 1
46 ASASSN -14lp SN* 12 45 09.1 -00 27 32           SNIa-norm 75 0
47 SN 2011jh SN* 12 47 14.42 -10 03 47.3           SNIa-norm 23 1
48 SN 2012cu SN* 12 53 29.35 +02 09 39.0           SNIa-norm 29 2
49 SN 2002dj SN* 13 13 00.34 -19 31 08.7     17.0     SNIa 134 1
50 SN 2013cs SN* 13 15 14.81 -17 57 55.6           SNIa 28 1
51 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
52 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa-norm 747 1
53 SN 2007af SN* 14 22 21.03 -00 23 37.6     15.4     SNIa 185 1
54 SN 2013aa SN* 14 32 33.88 -44 13 27.8           SNIa 81 1
55 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SNIa 374 1
56 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1407 1
57 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SNIa 301 1
58 SN 2010gp SN* 16 52 57.39 +02 23 16.4           SNIa 18 1
59 SN 2002er SN* 17 11 29.88 +07 59 44.8   14.25       SNIa 144 1
60 SN 2002cs SN* 18 46 59.96 +45 42 19.7     16.3     SNIa 43 1
61 SN 2004bv SN* 20 25 06.34 -24 48 53.7     15.6     SNIa 42 1
62 SN 2004eo SN* 20 32 54.19 +09 55 42.7   15.07 17.8     SNIa 225 1
63 SN 2013dy SN* 22 18 17.5 +40 34 09           SNIa-norm 128 0
64 SN 2011im SN* 22 44 25.22 -00 10 02.0       19.0   SNIa 26 1
65 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 574 3
66 SN 2017bzc SN* 23 16 14.690 -42 34 10.90           SNIa 10 0
67 ASASSN -14jg SN? 23 33 13.89 -60 34 11.0           ~ 22 0
68 SN 2007le SN* 23 38 48.45 -06 31 21.7     15.2     SNIa 139 1

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