2017A&A...602A.118D


Query : 2017A&A...602A.118D

2017A&A...602A.118D - Astronomy and Astrophysics, volume 602A, 118-118 (2017/6-1)

Two classes of fast-declining Type Ia supernovae.

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

Abstract (from CDS):

We aim to characterise a sample of fast-declining Type Ia supernovae (SN Ia) using their bolometric and near-infrared (NIR) properties. Based on these properties, we find that fast-declining SN Ia separate into two categories based on their bolometric and NIR properties. The peak bolometric luminosity (Lmax), the phase of the first maximum relative to the optical, the NIR peak luminosity, and the occurrence of a second maximum in the NIR distinguish a group of very faint SN Ia. Fast-declining supernovae show a large range of peak bolometric luminosities (Lmax differing by up to a factor of ∼8). All fast-declining SN Ia with Lmax<0.3x 1043erg/s are spectroscopically classified as 91bg-like and show only a single NIR peak. SNe with Lmax>0.5x1043erg/s appear to smoothly connect to normal SN Ia. The total ejecta mass (Mej) values for SNe with enough late time data are ≤1M, indicating a sub-Chandrasekhar mass progenitor for these SNe.

Abstract Copyright: © ESO, 2017

Journal keyword(s): supernovae: general - supernovae: general

Simbad objects: 20

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Number of rows : 20
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 SN 2005hk SN* 00 27 50.89 -01 11 53.3   15.92       SNIax 206 1
2 SN 2006gt SN* 00 56 17.30 -01 37 46.0     18.5     SNIap 49 1
3 iPTF 13ebh SN* 02 21 59.98 +33 16 13.7           SNIa 36 0
4 SN 2008hs SN* 02 25 29.62 +41 50 35.1           SNIa 22 1
5 SN 2003gs SN* 02 27 38.36 -01 09 35.4     14.0     SNIap 52 1
6 SN 2008R SN* 03 03 53.70 -11 59 39.4     15.5     SNIa 29 1
7 SN 2006mr SN* 03 22 42.84 -37 12 28.5     15.6     SNIap 59 1
8 SN 2005ke SN* 03 35 04.35 -24 56 38.8     17.2     SNIap 132 1
9 SN 2007on SN* 03 38 50.90 -35 34 30.0       14.9   SNIa 113 1
10 SN 2009F SN* 04 59 23.56 -11 07 50.1           SNIap 28 1
11 SN 2007ax SN* 08 22 43.26 +22 33 16.9     17.2     SNIap 55 1
12 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 273 1
13 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 294 1
14 SN 2010Y SN* 10 51 03.90 +65 46 47.0           SNIa 23 1
15 SN 2005bl SN* 12 04 12.24 +20 24 24.6           SNIap 92 1
16 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 559 1
17 SN 2007N SN* 12 49 01.25 -09 27 10.2     17.3     SNIap 34 1
18 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SNIapec 210 1
19 SN 2007ba SN* 15 16 41.8 +07 23 48           SNIap 46 1
20 SN 2008ha SN* 23 34 52.69 +18 13 35.4           SNIax 165 1

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2022.05.28-09:12:56

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