DES15E2mlf: A Spectroscopically Confirmed Superluminous Supernova that Exploded 3.5 Gyr After the Big Bang

2017/06/12 by Y. C. Pan, Y. -C. Pan, R. J. Foley +76 · 21 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Light curve #Physics #Redshift #Spectroscopy #Supernova #astro-ph.GA #astro-ph.SR

paper · pdf · doi:10.1093/mnras/stx1467

published in Monthly Notices of the Royal Astronomical Society (Oxford University Press) · MNRAS in press

openalex publication_date 2017/06/12 · arxiv created 2017/07/20 · arxiv updated 2017/08/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

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 MAB = −22.3 ± 0.1 mag. Given the high redshift, our data probe the rest-frame ultraviolet (1400–3500 Å) properties of the SN, finding velocity of the |C \small III| feature changes by ∼5600 km s− 1 over 14 d around maximum light. We find the host galaxy of DES15E2mlf has a stellar mass of |3.5^+3.6_-2.4 × 10⁹| M⊙, which is more massive than the typical SLSN-I host galaxy.

Citations

• Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae
• Pengaruh Kompensasi Finansial terhadap Loyalitas dan Kinerja Karyawan (Studi Kasus pada PT. Maya Food Industri, Pekalongan)
• MEASURING REDDENING WITH SLOAN DIGITAL SKY SURVEY STELLAR SPECTRA AND RECALIBRATING SFD

Cited by

• Hydrogen-poor Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey
• Detection strategies for the first supernovae with JWST