2016A&A...588A..84D


Query : 2016A&A...588A..84D

2016A&A...588A..84D - Astronomy and Astrophysics, volume 588A, 84-84 (2016/4-1)

A reddening-free method to estimate the 56Ni mass of Type Ia supernovae.

DHAWAN S., LEIBUNDGUT B., SPYROMILIO J. and BLONDIN S.

Abstract (from CDS):

The increase in the number of Type Ia supernovae (SNe Ia) has demonstrated that the population shows greater diversity than has been assumed in the past. The reasons (e.g. parent population, explosion mechanism) for this diversity remain largely unknown. We investigated a sample of SNe Ia near-infrared light curves and correlated the phase of the second maximum with the bolometric peak luminosity. The peak bolometric luminosity is related to the time of the second maximum (relative to the B light curve maximum) as follows: Lmax(1043erg/s)=(0.039±0.004)xt2(J)(days)+(0.013±0.106). 56Ni masses can be derived from the peak luminosity based on Arnett's rule, which states that the luminosity at maximum is equal to the instantaneous energy generated by the nickel decay. We checked this assumption against recent radiative-transfer calculations of Chandrasekhar-mass delayed detonation models and find this assumption is valid to within 10% in recent radiative-transfer calculations of Chandrasekhar-mass delayed detonation models. The Lmax vs. t2 relation is applied to a sample of 40 additional SNe Ia with significant reddening (E(B-V)>0.1mag), and a reddening-free bolometric luminosity function of SNe Ia is established. The method is tested with the 56Ni mass measurement from the direct observation of γ-rays in the heavily absorbed SN 2014J and found to be fully consistent. Super-Chandrasekhar-mass explosions, in particular SN 2007if, do not follow the relations between peak luminosity and second IR maximum. This may point to an additional energy source contributing at maximum light. The luminosity function of SNe Ia is constructed and is shown to be asymmetric with a tail of low-luminosity objects and a rather sharp high-luminosity cutoff, although it might be influenced by selection effects.

Abstract Copyright: © ESO, 2016

Journal keyword(s): supernovae: general - supernovae: individual: 2014J - supernovae: individual: 2006X - supernovae: individual: 2007if

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 SN 2007if SN* 01 10 51.37 +15 27 39.9   23.3 19.5     SNIap 112 1
2 SN 2005hc SN* 01 56 47.976 -00 12 48.62           SNIa 75 1
3 SN 2008R SN* 03 03 53.70 -11 59 39.4     15.5     SNIa 26 1
4 SN 2003hv SN* 03 04 09.32 -26 05 07.5     12.5     SNIa 106 1
5 SN 2005eq SN* 03 08 49.31 -07 01 59.7     17.4     SNIa 67 1
6 SN 2002fk SN* 03 22 05.71 -15 24 03.2     15.7     SNIa 85 1
7 SN 2008gp SN* 03 23 00.73 +01 21 42.8           SNIa 30 1
8 SN 2007on SN* 03 38 50.90 -35 34 30.0       14.9   SNIa 105 1
9 SN 2001el SN* 03 44 30.60 -44 38 23.4   12.81       SNIa 246 1
10 SN 2005el SN* 05 11 48.76 +05 11 39.0     18.7     SNIa 88 1
11 SN 2007bd SN* 08 31 32.872 -01 11 52.02     18.4     SNIa 69 1
12 SN 2008ia SN* 08 50 35.15 -61 16 40.6           SNIa 35 1
13 SN 2008hv SN* 09 07 34.06 +03 23 32.1           SNIa 64 1
14 SN 2005am SN* 09 16 12.47 -16 18 16.0     17.5     SNIa 100 1
15 SN 2005M SN* 09 37 32.76 +23 12 10.0     18.8     SNIa 64 1
16 SN 2008bc SN* 09 38 31.23 -63 58 25.6           SNIa 33 1
17 SN 2014J SN* 09 55 42.12 +69 40 25.9           SNIa 332 1
18 SN 2003cg SN* 10 14 15.97 +03 28 02.5   15.94       SNIa 126 1
19 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 287 1
20 SN 2005ki SN* 10 40 28.355 +09 10 57.14     18.0     SNIa 73 1
21 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 300 1
22 SN 2006X SN* 12 22 53.93 +15 48 32.0     15.3     SNIa 290 1
23 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 543 1
24 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 717 1
25 SN 2002dj SN* 13 13 00.34 -19 31 08.7     17.0     SNIa 107 1
26 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 388 1
27 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa 550 1
28 SN 2009dc SN* 15 51 12.12 +25 42 28.0           SNIap 136 1
29 SN 1999ac SN* 16 07 15.01 +07 58 20.4   14.34       SNIap 125 1
30 SN 2006bh SN* 22 40 16.10 -66 29 06.3     14.8     SNIa 39 1
31 SN 2005iq SN* 23 58 32.50 -18 42 33.0     17.2     SNIa 57 1

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2021.07.28-17:09:59

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