Romer, A K and The DES Collaboration, (2017) DES15E2mlf: a spectroscopically confirmed superluminous supernova that exploded 3.5 Gyr after the big bang. Monthly Notices of the Royal Astronomical Society, 470 (4). pp. 4241-4250. ISSN 0035-8711
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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 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.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Research Centres and Groups: | Astronomy Centre |
Subjects: | Q Science > QB Astronomy |
Related URLs: | |
Depositing User: | Billy Wichaidit |
Date Deposited: | 04 Sep 2017 09:23 |
Last Modified: | 02 Jul 2019 18:37 |
URI: | http://sro.sussex.ac.uk/id/eprint/69982 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Astrophysics and Cosmology - Sussex Consolidated Grant | G1291 | STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL | ST/L000652/1 |