2015A&A...573A...2S


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST01:13:13

2015A&A...573A...2S - Astronomy and Astrophysics, volume 573A, 2-2 (2015/1-1)

Comprehensive observations of the bright and energetic Type Iax SN 2012Z: Interpretation as a Chandrasekhar mass white dwarf explosion.

STRITZINGER M.D., VALENTI S., HOEFLICH P., BARON E., PHILLIPS M.M., TADDIA F., FOLEY R.J., HSIAO E.Y., JHA S.W., McCULLY C., PANDYA V., SIMON J.D., BENETTI S., BROWN P.J., BURNS C.R., CAMPILLAY A., CONTRERAS C., FOERSTER F., HOLMBO S., MARION G.H., MORRELL N. and PIGNATA G.

Abstract (from CDS):

We present ultraviolet through near-infrared (NIR) broadband photometry, and visual-wavelength and NIR spectroscopy of the Type Iax supernova (SN) 2012Z. The data set consists of both early- and late-time observations, including the first late phase NIR spectrum obtained for a spectroscopically classified SN Iax. Simple model calculations of its bolometric light curve suggest SN 2012Z produced ∼0.3M of 56Ni, ejected about a Chandrasekhar mass of material, and had an explosion energy of ∼1051 erg, making it one of the brightest (MB=-18.3mag) and most energetic SN Iax yet observed. The late phase (+269d) NIR spectrum of SN 2012Z is found to broadly resemble similar epoch spectra of normal SNe Ia; however, like other SNe Iax, corresponding visual-wavelength spectra differ substantially from all supernova types. Constraints from the distribution of intermediate mass elements, e.g., silicon and magnesium, indicate that the outer ejecta did not experience significant mixing during or after burning, and the late phase NIR line profiles suggests most of the 56Ni is produced during high density burning. The various observational properties of SN 2012Z are found to be consistent with the theoretical expectations of a Chandrasekhar mass white dwarf progenitor that experiences a pulsational delayed detonation, which produced several tenths of a solar mass of 56Ni during the deflagration burning phase and little (or no) 56Ni during the detonation phase. Within this scenario only a moderate amount of Rayleigh-Taylor mixing occurs both during the deflagration and fallback phase of the pulsation, and the layered structure of the intermediate mass elements is a product of the subsequent denotation phase. The fact that the SNe Iax population does not follow a tight brightness-decline relation similar to SNe Ia can then be understood in the framework of variable amounts of mixing during pulsational rebound and variable amounts of 56Ni production during the early subsonic phase of expansion.

Abstract Copyright:

Journal keyword(s): supernovae: individual: SN 2012Z - supernovae: individual: SN 2005hk - supernovae: general

VizieR on-line data: <Available at CDS (J/A+A/573/A2): list.dat fits/*>

Simbad objects: 23

goto Full paper

goto View the reference in ADS

Number of rows : 23

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 UGC 272 GiG 00 27 49.691 -01 11 59.49   14.7 14.63 16.914 14.3 ~ 73 0
2 SN 2005hk SN* 00 27 50.89 -01 11 53.3   15.92       SN.Iax 177 1
3 SN 2008A SN* 01 38 17.38 +35 22 13.7     17.6     SN.Iax 43 1
4 SN 2007qd SN* 02 09 33.56 -01 00 02.2           SN.IaPec 34 1
5 SN 2007Y SN* 03 02 35.92 -22 53 50.1     17.5     SNIb 83 1
6 SN 2003hv SN* 03 04 09.32 -26 05 07.5     12.5     SN.Ia 94 1
7 [MJF2014] S1 * 03 22 05.39591 -15 23 14.9350   27.589 27.622   27.532 ~ 5 0
8 SN 2012Z SN* 03 22 05.39641 -15 23 14.9390           SN.Iax 63 1
9 SN 2002fk SN* 03 22 05.71 -15 24 03.2     15.7     SN.Ia 75 1
10 NGC 1309 GiG 03 22 06.5558186281 -15 23 59.793798444   12.08   12.5 11.7 ~ 175 0
11 SN 2012fr SN* 03 33 35.99 -36 07 37.7           SNIa 83 1
12 SN 2008ge SN* 04 08 24.68 -47 53 47.4           SN.IaPec 48 1
13 SN 2011ay SN* 07 02 34.06 +50 35 25.0           SN.IaPec 26 1
14 SN 2010ae SN* 07 15 54.65 -57 20 36.9           SN.Iax 37 1
15 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SN.Iap 248 1
16 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SN.Ia 290 1
17 SN 2006ax SN* 11 24 03.46 -12 17 29.2     17.1     SN.Ia 70 1
18 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SN.IaPec 517 1
19 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SN.IaPec 188 1
20 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SN.Ia 306 1
21 SN 2003gq SN* 22 53 20.68 +32 07 57.6     17.6     SN.IaPec 33 1
22 SN 2008ha SN* 23 34 52.69 +18 13 35.4           SN.Iax 142 1
23 SN 2008bk SN* 23 57 50.42 -32 33 21.5           SN.IIP 93 2

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2015A&A...573A...2S and select 'bookmark this link' or equivalent in the popup menu


2019.10.23-01:13:13

© Université de Strasbourg/CNRS

    • Contact