Pan, Y C and Foley, R J and Smith, M and Galbany, L and D’Andrea, C B and Gonzalez-Gaitan, S and Jarvis, M J and Kessler, R and Kovacs, E and Lidman, C and Nichol, R C and Papadopoulos, A and Sako, M and Sullivan, M and Abbott, T M C and Abdalla, F B and Annis, J and Bechtol, K and Benoit-Lévy, A and Brooks, D and Buckley-Geer, E and Burke, D L and Rosell, A Carnero and Carrasco Kind, M and Carretero, J and Castander, F J and Cunha, C E and da Costa, L N and Desai, Shantanu and et al, .
(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
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 similar to 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 angstrom) properties of the SN, finding velocity of the C III feature changes by similar to 5600 km s(-1) over 14 d around maximum light. We find the host galaxy of DES15E2mlf has a stellar mass of 3.5(-2.4)(+3.6) x 10(9) M-circle dot, which is more massive than the typical SLSN-I host galaxy.
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