publication . Article . Preprint . 2020

The mystery of photometric twins DES17X1boj and DES16E2bjy

M Pursiainen; C P Gutiérrez; P Wiseman; M Childress; M Smith; C Frohmaier; C Angus; N Castro Segura; L Kelsey; M Sullivan; ...
Open Access English
  • Published: 01 Jun 2020
  • Publisher: Oxford University Press
Abstract
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 which reach very different maximum luminosities (M$_\mathrm{r}$ = -15.4 and M$_\mathrm{r}$ = -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 is well fitted with a blackbody and the resulting moderate photospheric ex...
Subjects
free text keywords: astro-ph.HE, RCUK, STFC, ST/R000506/1, supernovae: general, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - High Energy Astrophysical Phenomena, Space and Planetary Science, Astronomy and Astrophysics
Funded by
EC| SPCND
Project
SPCND
Supernovae: Physics and Cosmology in the Next Decade
  • Funder: European Commission (EC)
  • Project Code: 615929
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
RCUK| Astrophysics at Southampton
Project
  • Funder: Research Council UK (RCUK)
  • Project Code: ST/R000506/1
  • Funding stream: STFC
,
EC| SNDTD
Project
SNDTD
Resolving the origins of supernovae: constraining progenitors with integral field spectroscopy
  • Funder: European Commission (EC)
  • Project Code: 839090
  • Funding stream: H2020 | MSCA-IF-EF-ST
,
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
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