2021A&A...655A..90Y


Query : 2021A&A...655A..90Y

2021A&A...655A..90Y - Astronomy and Astrophysics, volume 655A, 90-90 (2021/11-1)

A low-energy explosion yields the underluminous Type IIP SN 2020cxd.

YANG S., SOLLERMAN J., STROTJOHANN N.L., SCHULZE S., LUNNAN R., KOOL E., FREMLING C., PERLEY D., OFEK E., SCHWEYER T., BELLM E.C., KASLIWAL M.M., MASCI F.J., RIGAULT M. and YANG Y.

Abstract (from CDS):


Context. We present our observations and analysis of SN 2020cxd, a low-luminosity (LL), long-lived Type IIP supernova (SN). This object is a clear outlier in the magnitude-limited SN sample recently presented by the Zwicky Transient Facility's (ZTF) Bright Transient Survey.
Aims. We demonstrate that SN 2020cxd is an additional member of the group of LL SNe and we discuss the rarity of LL SNe in the context of the ZTF survey. We consider how further studies of these faintest members of the core-collapse (CC) SN family might help improve the general understanding of the underlying initial mass function for stars that explode.
Methods. We used optical light curves (LCs) from the ZTF in the gri bands and several epochs of ultraviolet data from the Neil Gehrels Swift observatory as well as a sequence of optical spectra. We constructed the colour curves and a bolometric LC. Then we compared the evolution of the ejecta velocity and black-body temperature for LL SNe as well as for typical Type II SNe. Furthermore, we adopted a Monte Carlo code that fits semi-analytic models to the LC of SN 2020cxd, which allows for the estimation of the physical parameters. Using our late-time nebular spectra, we also make a comparison against SN II spectral synthesis models from the literature to constrain the progenitor properties of SN 2020cxd.
Results. The LCs of SN 2020cxd show a great similarity with those of LL SNe IIP in terms of luminosity, timescale, and colours. Also, the spectral evolution of SN 2020cxd is that of a Type IIP SN. The spectra show prominent and narrow P-Cygni lines, indicating low expansion velocities. This is one of the faintest LL SNe observed, with an absolute plateau magnitude of Mr = -14.5 mag and also one with the longest plateau lengths, with a duration of 118 days. Finally, the velocities measured from the nebular emission lines are among the lowest ever seen in a SN, with an intrinsic full width at half maximum value of 478 km s–1. The underluminous late-time exponential LC tail indicates that the mass of 56Ni ejected during the explosion is much smaller than the average of normal SNe IIP, we estimate M56^Ni_ = 0.003 M. The Monte Carlo fitting of the bolometric LC suggests that the progenitor of SN 2020cxd had a radius of R0 = 1.3 x 1013 cm, kinetic energy of Ekin = 4.3 x 1050 erg, and ejecta mass of Mej = 9.5 M. From the bolometric LC, we estimated the total radiated energy Erad = 1.52 x 1048 erg. Using our late-time nebular spectra, we compared these results against SN II spectral synthesis models to constrain the progenitor zero-age main sequence mass and found that it is likely to be ≤15 M.
Conclusions. SN 2020cxd is a LL Type IIP SN. The inferred progenitor parameters and the features observed in the nebular spectrum favour a low-energy, Ni-poor, iron CC SN from a low-mass (∼12 M) red supergiant.

Abstract Copyright: © ESO 2021

Journal keyword(s): supernovae: general - galaxies: individual: NGC 6395

VizieR on-line data: <Available at CDS (J/A+A/655/A90): ground.dat swift.dat lt-0220.dat p60-0220.dat p60-0225.dat p60-0522.dat lt-0625.dat p60-0626.dat not-0701.dat gemini.dat keck1.dat>

Simbad objects: 53

goto Full paper

goto View the references in ADS

Number of rows : 53
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 SN 2002gw SN* 02 25 02.97 -24 47 50.6     17.3     SNII 30 1
2 NGC 922 EmG 02 25 04.400 -24 47 17.46   12.54 12.21 11.84   ~ 137 0
3 SN 2003B SN* 02 46 13.78 -30 13 45.1     15.0     SNIIP 40 2
4 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1278 3
5 SN 1999eu SN* 02 46 20.79 -30 19 06.1     17.3     SNIIPp 42 1
6 NGC 1536 IG 04 10 59.838 -56 28 49.64   13.29 13.15 12.19   ~ 78 0
7 SN 1997D SN* 04 11 01.00 -56 29 56.0       16.3   SNIIpec 171 1
8 SN 2004eg SN* 04 28 08.26 +21 39 18.3     19.5     SNII 17 1
9 UGC 3053 G 04 28 09.6419734464 +21 39 19.431765144   14.9       ~ 34 2
10 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 648 1
11 MCG-02-14-003 GiG 05 11 07.897 -09 23 20.01   14.18   13.19 13.4 ~ 52 0
12 SN 2004fx SN* 05 11 11.67 -09 23 31.6     16.9     SNII 29 1
13 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4784 2
14 NGC 2101 G 05 46 23.1 -52 05 21   13.68   12.70 14.0 ~ 54 0
15 ASASSN -16cc SN* 05 46 23.907 -52 05 18.86           SNII 12 0
16 IC 2327 G 08 21 27.9642855288 +03 10 09.258756420   13.9       ~ 43 0
17 SN 2018hwm SN* 08 21 28.2 +03 09 52           SNII 8 0
18 SN 2003Z SN* 09 07 32.46 +60 29 17.5     16.7     SNIIP 74 1
19 NGC 2816 GiG 09 07 33.5746410432 +60 28 45.818789124   12.0       ~ 196 0
20 NGC 3180 GiG 10 18 16.985 +41 25 27.77   10.4       ~ 694 0
21 SN 2016bkv SN* 10 18 19.31 +41 25 39.3           SNII 39 0
22 UGC 5695 G 10 29 46.777 +13 01 05.35   14.9       ~ 43 0
23 SN 1994N SN* 10 29 46.8 +13 01 13       17.5   SNII 36 1
24 SN 2009md SN* 10 48 26.28 +12 32 02.8           SNIIP 58 2
25 NGC 3389 GiG 10 48 27.9084984144 +12 31 59.659616244   12.0       ~ 222 1
26 M 65 GiP 11 18 55.9084654776 +13 05 32.300703672   9.6       ~ 431 1
27 SN 2013am SN* 11 18 56.95 +13 03 49.4           SNII 35 1
28 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 948 2
29 SN 2006ov SN* 12 21 55.30 +04 29 16.7     14.9     SNIIP 65 1
30 SN 2008in SN* 12 22 01.77 +04 28 47.5           SNIIP 93 1
31 NGC 4487 GiG 12 31 04.4731449720 -08 03 14.548820040   11.7   11.9 11.6 ~ 169 0
32 SN 2009N SN* 12 31 09.46 -08 02 56.3           SNIIP 89 1
33 NGC 4900 EmG 13 00 39.1193785512 +02 30 05.154593868   12.8       ~ 243 0
34 SN 1999br SN* 13 00 41.80 +02 29 45.8     17.5     SNIIPp 161 1
35 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4166 4
36 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 384 1
37 SN 2001dc SN* 14 51 16.15 +58 59 02.8     18.5     SNIIP 44 1
38 NGC 5777 GiP 14 51 17.798 +58 58 40.12   14.2       ~ 92 0
39 SN 2020cxd SN* 17 26 29.260 +71 05 38.58           SNII 5 0
40 NGC 6395 GiG 17 26 31.289 +71 05 46.54   12.8       ~ 63 0
41 PSN J17292918+7542390 SN* 17 29 29.18 +75 42 39.0           SNII 5 0
42 NGC 6412 GiG 17 29 37.522 +75 42 15.59   12.40       ~ 136 0
43 SN 2013K SN* 17 39 31.54 -85 18 38.1           SNIIP 11 1
44 NGC 6495 GiG 17 54 50.7755269728 +18 19 36.669498852   13.8       ~ 53 0
45 UGC 11522 GiG 20 11 49.3340206512 +05 45 49.871701368   14.8       ~ 36 0
46 SN 2003fb SN* 20 11 50.33 +05 45 37.6     18.6     SNII 23 1
47 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 464 1
48 NGC 7483 GiG 23 05 48.2715121248 +03 32 42.256625424   14.3       ~ 49 0
49 SN 2010id SN* 23 05 48.88 +03 31 25.5           SNII 37 1
50 NGC 7537 GiP 23 14 34.5173585112 +04 29 54.054910824   13.8       ~ 206 0
51 SN 2002gd SN* 23 14 37.01 +04 30 06.1     16.7     SNII 56 1
52 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1057 2
53 SN 2008bk SN* 23 57 50.42 -32 33 21.5           SNIIP 126 2

To bookmark this query, right click on this link: simbad:objects in 2021A&A...655A..90Y and select 'bookmark this link' or equivalent in the popup menu


2023.02.08-01:54:31

© Université de Strasbourg/CNRS

    • Contact