DES15E2mlf: A Spectroscopically Confirmed Superluminous Supernova that Exploded 3.5 Gyr After the Big Bang
Astrophysics of Galaxies
2017-08-02 v1 Solar and Stellar Astrophysics
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 typical SLSN-I host galaxy.
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Cite
@article{arxiv.1707.06649,
title = {DES15E2mlf: A Spectroscopically Confirmed Superluminous Supernova that Exploded 3.5 Gyr After the Big Bang},
author = {Y. -C. Pan and R. J. Foley and M. Smith and L. Galbany and C. B. D'Andrea and S. Gonzalez-Gaitan and M. J. Jarvis and R. Kessler and E. Kovacs and C. Lidman and R. C. Nichol and A. Papadopoulos and M. Sako and M. Sullivan and T. M. C. Abbott and F. B. Abdalla and J. Annis and K. Bechtol and A. Benoit-Levy and D. Brooks and E. Buckley-Geer and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and C. E. Cunha and L. N. da Costa and S. Desai and H. T. Diehl and P. Doel and T. F. Eifler and D. A. Finley and B. Flaugher and J. Frieman and J. Garcia-Bellido and D. A. Goldstein and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and D. J. James and A. G. Kim and E. Krause and K. Kuehn and N. Kuropatkin and O. Lahav and M. Lima and M. A. G. Maia and M. March and J. L. Marshall and P. Martini and R. Miquel and P. Nugent and A. A. Plazas and A. K. Romer and E. Sanchez and V. Scarpine and M. Schubnell and I. Sevilla-Noarbe and R. C. Smith and F. Sobreira and E. Suchyta and M. E. C. Swanson and R. C. Thomas and A. R. Walker},
journal= {arXiv preprint arXiv:1707.06649},
year = {2017}
}
Comments
MNRAS in press