2020MNRAS.494.5576P


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.02CET15:05:45

2020MNRAS.494.5576P - Mon. Not. R. Astron. Soc., 494, 5576-5589 (2020/June-1)

The mystery of photometric twins DES17X1boj and DES16E2bjy.

PURSIAINEN M., GUTIERREZ C.P., WISEMAN P., CHILDRESS M., SMITH M., FROHMAIER C., ANGUS C., CASTRO SEGURA N., KELSEY L., SULLIVAN M., GALBANY L., NUGENT P., BASSETT B.A., BROUT D., CAROLLO D., D'ANDREA C.B., DAVIS T.M., FOLEY R.J., GRAYLING M., HINTON S.R., INSERRA C., KESSLER R., LEWIS G.F., LIDMAN C., MACAULAY E., MARCH M., MOLLER A., MULLER T., SCOLNIC D., SOMMER N.E., SWANN E., THOMAS B.P., TUCKER B.E., VINCENZI M., ABBOTT T.M.C., ALLAM S., ANNIS J., AVILA S., BERTIN E., BROOKS D., BUCKLEY-GEER E., BURKE D.L., CARNERO ROSELL A., CARRASCO KIND M., DA COSTA L.N., DE VICENTE J., DESAI S., DIEHL H.T., DOEL P., EIFLER T.F., EVERETT S., FLAUGHER B., FRIEMAN J., GARCIA-BELLIDO J., GAZTANAGA E., GERDES D.W., GRUEN D., GRUENDL R.A., GSCHWEND J., GUTIERREZ G., HOLLOWOOD D.L., HONSCHEID K., JAMES D.J., KIM A.G., KRAUSE E., KUEHN K., MAIA M.A.G., MARSHALL J.L., MENANTEAU F., MIQUEL R., OGANDO R.L.C., PALMESE A., PAZ-CHINCHON F., PLAZAS A.A., ROODMAN A., SANCHEZ E., SCARPINE V., SCHUBNELL M., SERRANO S., SEVILLA-NOARBE I., SUCHYTA E., SWANSON M.E.C., TARLE G. and WESTER W.

Abstract (from CDS):

We present an analysis of DES17X1boj and DES16E2bjy, two peculiar transients discovered by the Dark Energy Survey (DES). They exhibit nearly identical double-peaked light curves that reach very different maximum luminosities (Mr = -15.4 and -17.9, respectively). The light-curve evolution of these events is highly atypical and has not been reported before. The transients are found in different host environments: DES17X1boj was found near the nucleus of a spiral galaxy, while DES16E2bjy is located in the outskirts of a passive red galaxy. Early photometric data are well fitted with a blackbody and the resulting moderate photospheric expansion velocities (1800 km s–1 for DES17X1boj and 4800 km s–1 for DES16E2bjy) suggest an explosive or eruptive origin. Additionally, a feature identified as high-velocity Ca II absorption (v ≃ 9400 km s–1) in the near-peak spectrum of DES17X1boj may imply that it is a supernova. While similar light-curve evolution suggests a similar physical origin for these two transients, we are not able to identify or characterize the progenitors.

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

Journal keyword(s): supernovae: general

Simbad objects: 24

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Number of rows : 24

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 DES16E2bjy SN? 00 33 19.34 -44 20 19.6           ~ 1 0
2 WISEA J003319.74-442022.9 G 00 33 19.7404 -44 20 22.909           ~ 1 0
3 SN 2013ej SN* 01 36 48.16 +15 45 31.0           SNIIP 130 0
4 LEDA 1051269 G 02 19 53.7 -04 57 10           ~ 2 0
5 DES17X1boj SN? 02 19 53.80 -04 57 10.4           ~ 1 0
6 DES14X3taz SN* 02 28 04.46 -04 05 12.7           SNSL-I 29 0
7 SN 2005E SN* 02 39 14.34 +01 05 55.0     16.8     SNIb/c 107 1
8 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 351 0
9 DES16C2nm SN* 03 40 14.83 -29 05 53.5           SLSN-I 6 0
10 V* V838 Mon CV* 07 04 04.8222936785 -03 50 50.637499515   15.5   15.18 14.51 M10+B3V 377 0
11 PS1-12sk SN* 08 44 54.860 +42 58 16.89           SNIbn 18 0
12 SN 2015bh SN* 09 09 34.96 +33 07 20.4           SNIIn 37 1
13 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1269 1
14 SN 2016bkv SN* 10 18 19.31 +41 25 39.3           SNII 23 0
15 SN 2009N SN* 12 31 09.46 -08 02 56.3           SNIIP 72 1
16 NAME M51 OT2019-1 ev 13 29 42.394 +47 11 16.99           ~ 12 0
17 SN 2011dh SN* 13 30 05.10555 +47 10 10.9227           SNIIb 290 1
18 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa 526 1
19 PSN J14595947+0154262 SN? 14 59 59.47 +01 54 26.6           ~ 25 1
20 SN 2010as SN* 15 49 49.23 -29 23 09.7           SNIb/c 21 1
21 SN 2006oz SN* 22 08 53.56 +00 53 50.4           SLSNIc 70 1
22 SN 1999ex SN* 22 16 07.27 -36 50 53.7   17.35       SNIb 125 2
23 SN 2009ip s*b 22 23 08.26 -28 56 52.4           LBV 276 0
24 SN 2014ft SN* 23 33 27.95 +33 38 46.1           ~ 18 0

    Equat.    Gal    SGal    Ecl

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2020.12.02-15:05:45

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