publication . Article . Preprint . 2017

DES15E2mlf: a spectroscopically confirmed superluminous supernova that exploded 3.5 Gyr after the big bang

Carlos E. Cunha; J. Carretero; J. Carretero; Joshua A. Frieman; R. C. Thomas; Francisco J. Castander; Elisabeth Krause; D. Brooks; F. Sobreira; Mathew Smith; ...
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Open Access English
  • Published: 01 Oct 2017
  • Publisher: HAL CCSD
Abstract
We present the Dark Energy Survey (DES) discovery of DES15E2mlf, the most distant superluminous supernova (SLSN) spectroscopically confirmed to date. The light curves and Gemini spectroscopy of DES15E2mlf indicate that it is a Type I superluminous supernova (SLSN-I) at z = 1.861 (a lookback time of ~10 Gyr) and peaking at M_AB = -22.3 +/- 0.1 mag. Given the high redshift, our data probe the rest-frame ultraviolet (1400-3500 A) properties of the SN, finding velocity of the C III feature changes by ~5600 km/s over 14 days around maximum light. We find the host galaxy of DES15E2mlf has a stellar mass of 3.5^+3.6_-2.4 x 10^9 M_sun, which is more massive than the typ...
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doi: 10.1093/mnras/stx1467
Subjects
free text keywords: supernovae: general, supernovae: individual: DES15E2mlf, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], general [supernovae], individual: DES15E2mlf [supernovae], astro-ph.GA, astro-ph.SR, Astronomy & Astrophysics, Astronomical and Space Sciences, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics, Science & Technology, Physical Sciences, Astronomy & Astrophysics, supernovae: general, supernovae: individual: DES15E2mlf, MASS-METALLICITY RELATION, DIGITAL SKY SURVEY, STAR-FORMING GALAXIES, LUMINOUS SUPERNOVAE, IA SUPERNOVAE, REDSHIFTS, EVOLUTION, EXPLOSIONS, ORIGIN, SAMPLE, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Supernova (Estrela), Supernovae, QB, Spectroscopy, Physics, Light curve, Astrophysics, Redshift, Supernova, Big Bang, Galaxy, Stellar mass, Dark energy, Astronomy
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Funded by
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
, NSF| The Progenitors and Explosions of Type Ia Supernovae and Exotic Transients
Project
The Progenitors and Explosions of Type Ia Supernovae and Exotic Transients
  • Funder: National Science Foundation (NSF)
  • Project Code: 1518052
, NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
Collaborative Research: The Dark Energy Survey Data Management Operations
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
, NSF| Type Ia Supernovae in the Near Infrared - Clearing a Path through the Dust
Project
Type Ia Supernovae in the Near Infrared - Clearing a Path through the Dust
  • Funder: National Science Foundation (NSF)
  • Project Code: 1311862
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
, EC| SPCND
Project
SPCND
Supernovae: Physics and Cosmology in the Next Decade
  • Funder: European Commission (EC)
  • Project Code: 615929
  • Funding stream: FP7 | SP2 | ERC
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