2021MNRAS.501.1078B

Query : 2021MNRAS.501.1078B

2021MNRAS.501.1078B - Mon. Not. R. Astron. Soc., 501, 1078-1099 (2021/February-2)

SN 2019muj - a well-observed Type Iax supernova that bridges the luminosity gap of the class.

BARNA B., SZALAI T., JHA S.W., CAMACHO-NEVES Y., KWOK L., FOLEY R.J., KILPATRICK C.D., COULTER D.A., DIMITRIADIS G., REST A., ROJAS-BRAVO C., SIEBERT M.R., BROWN P.J., BURKE J., PADILLA GONZALEZ E., HIRAMATSU D., HOWELL D.A., McCULLY C., PELLEGRINO C., DOBSON M., SMARTT S.J., SWIFT J.J., STACEY H., RAHMAN M., SAND D.J., ANDREWS J., WYATT S., HSIAO E.Y., ANDERSON J.P., CHEN T.-W., DELLA VALLE M., GALBANY L., GROMADZKI M., INSERRA C., LYMAN J., MAGEE M., MAGUIRE K., MULLER-BRAVO T.E., NICHOLL M., SRIVASTAV S. and WILLIAMS S.C.

Abstract (from CDS):

We present early-time (t < +50 d) observations of SN 2019muj (=ASASSN-19tr), one of the best-observed members of the peculiar SN Iax class. Ultraviolet and optical photometric and optical and near-infrared spectroscopic follow-up started from ∼5 d before maximum light [tmax(B) on 58707.8 MJD] and covers the photospheric phase. The early observations allow us to estimate the physical properties of the ejecta and characterize the possible divergence from a uniform chemical abundance structure. The estimated bolometric light-curve peaks at 1.05 x 1042 erg s–1 and indicates that only 0.031 M☉ of 56Ni was produced, making SN 2019muj a moderate luminosity object in the Iax class with peak absolute magnitude of MV_ = -16.4 mag. The estimated date of explosion is t0 = 58698.2 MJD and implies a short rise time of trise = 9.6 d in B band. We fit of the spectroscopic data by synthetic spectra, calculated via the radiative transfer code TARDIS. Adopting the partially stratified abundance template based on brighter SNe Iax provides a good match with SN 2019muj. However, without earlier spectra, the need for stratification cannot be stated in most of the elements, except carbon, which is allowed to appear in the outer layers only. SN 2019muj provides a unique opportunity to link extremely low-luminosity SNe Iax to well-studied, brighter SNe Iax.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): supernovae: general - supernovae: individual: SN 2019muj (ASASSN-19tr)

Simbad objects: 17

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Number of rows : 17
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 2005hk SN* 00 27 50.89 -01 11 53.3   15.92       SNIax 240 1
2 SN 2010ha SN* 02 00 24.85 +24 34 43.7           SNIb 8 1
3 SN 2007J SN* 02 18 51.70 +33 43 43.3     18.2     SNIbpec 39 1
4 SN 2019muj SN* 02 26 18.472 -09 50 09.92           SNIax 23 0
5 MCG-02-07-007 GiG 02 26 21.458 -09 50 30.25   14.54   13.98 14.7 ~ 60 0
6 SN 2012Z SN* 03 22 05.39641 -15 23 14.9390           SNIax 142 1
7 SN 2009ku SN* 03 29 53.232 -28 05 12.12           SNIapec 31 1
8 SN 2009J SN* 05 55 21.13 -76 55 20.8           ~ 23 1
9 SN 2011ay SN* 07 02 34.1 +50 35 25           SNIax 51 1
10 SN 2010ae SN* 07 15 54.65 -57 20 36.9           SNIax 68 1
11 SN 2015H SN* 10 54 42.2 -21 04 14           SNIax 35 1
12 SN 2014dt SN* 12 21 57.6 +04 28 18           SNIax 68 1
13 SN 2002cx SN* 13 13 49.72 +06 57 31.9   17.68       SNIapec 240 1
14 SN 2019gsc SN* 14 37 45.204 +52 43 36.31           SNIax 22 0
15 SN 2004cs SN* 17 50 14.38 +14 16 59.5   18.16 18.0     SNIa: 45 1
16 SN 2014ck SN* 22 45 38.9 +73 09 43           SNIax 33 1
17 SN 2008ha SN* 23 34 52.69 +18 13 35.4           SNIax 203 1

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