2016A&A...589A..89M


Query : 2016A&A...589A..89M

2016A&A...589A..89M - Astronomy and Astrophysics, volume 589A, 89-89 (2016/5-1)

The type Iax supernova, SN 2015HA white dwarf deflagration candidate.

MAGEE M.R., KOTAK R., SIM S.A., KROMER M., RABINOWITZ D., SMARTT S.J., BALTAY C., CAMPBELL H.C., CHEN T.-W., FINK M., GAL-YAM A., GALBANY L., HILLEBRANDT W., INSERRA C., KANKARE E., LE GUILLOU L., LYMAN J.D., MAGUIRE K., PAKMOR R., ROPKE F.K., RUITER A.J., SEITENZAHL I.R., SULLIVAN M., VALENTI S. and YOUNG D.R.

Abstract (from CDS):

We present results based on observations of SN 2015H which belongs to the small group of objects similar to SN 2002cx, otherwise known as type Iax supernovae. The availability of deep pre-explosion imaging allowed us to place tight constraints on the explosion epoch. Our observational campaign began approximately one day post-explosion, and extended over a period of about 150 days post maximum light, making it one of the best observed objects of this class to date. We find a peak magnitude of Mr=-17.27±0.07, and a (Δm15)r=0.69±0.04. Comparing our observations to synthetic spectra generated from simulations of deflagrations of Chandrasekhar mass carbon-oxygen white dwarfs, we find reasonable agreement with models of weak deflagrations that result in the ejection of ∼0.2M of material containing ∼0.07M of 56Ni. The model light curve however, evolves more rapidly than observations, suggesting that a higher ejecta mass is to be favoured. Nevertheless, empirical modelling of the pseudo-bolometric light curve suggests that <=0.6M of material was ejected, implying that the white dwarf is not completely disrupted, and that a bound remnant is a likely outcome.

Abstract Copyright: © ESO, 2016

Journal keyword(s): supernovae: general - supernovae: individual: SN 2015H

CDS comments: PTF 09eo is a probable misprint for PTF 09ego. Tables A.1 to A.3 Stars not in SIMBAD.

Simbad objects: 26

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Number of rows : 26
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 2008A SN* 01 38 17.38 +35 22 13.7     17.6     SNIax 57 1
3 PTF 11hyh SN* 01 45 50.50 +14 35 00.0           SNIa 6 0
4 PTF 09eiy SN* 01 54 16.68 -15 05 01.6           ~ 4 0
5 NAME PS 15csd SN* 02 04 55.53 +18 48 15.0           SNIa 4 0
6 SN 2007qd SN* 02 09 33.56 -01 00 02.2           SNIapec 35 1
7 SN 2007J SN* 02 18 51.70 +33 43 43.3     18.2     SNIbpec 29 1
8 SN 2012Z SN* 03 22 05.39641 -15 23 14.9390           SNIax 97 1
9 SN 2009ku SN* 03 29 53.232 -28 05 12.12           SNIapec 26 1
10 SN 2009J SN* 05 55 21.13 -76 55 20.8           ~ 20 1
11 SN 2011ay SN* 07 02 34.06 +50 35 25.0           SNIapec 38 1
12 SN 2010ae SN* 07 15 54.65 -57 20 36.9           SNIax 49 1
13 SN 2008ae SN* 09 56 03.20 +10 29 58.8     17.8     SNIax 31 1
14 NGC 3464 GiG 10 54 40.1376198816 -21 03 59.251207824   13.23   12.01 12.4 ~ 94 0
15 SN 2015H SN* 10 54 42.16 -21 04 13.8           SNIapec 20 1
16 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 737 1
17 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SNIapec 210 1
18 SN 2005cc SN* 13 57 04.96 +41 50 47.4     17.7     SNIapec: 40 1
19 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa 583 1
20 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SNIa 259 1
21 PTF 09ego SN* 17 26 25.16 +62 58 22.1           ~ 5 0
22 SN 2004cs SN* 17 50 14.38 +14 16 59.5   18.16 18.0     SNIa: 36 1
23 SN 2004eo SN* 20 32 54.19 +09 55 42.7   15.07 17.8     SNIa 183 1
24 SN 2003gq SN* 22 53 20.68 +32 07 57.6     17.6     SNIapec 35 1
25 PTF 09eoi SN* 23 24 12.87 +12 46 42.6           ~ 5 0
26 SN 2008ha SN* 23 34 52.69 +18 13 35.4           SNIax 165 1

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2022.05.24-11:50:31

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