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

DES15E2mlf: a spectroscopically confirmed superluminous supernova that exploded 3.5 Gyr after the big bang
DES15E2mlf: a spectroscopically confirmed superluminous supernova that exploded 3.5 Gyr after the big bang
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.
supernovae: general, supernovae: individual: DES15E2mlf
1365-2966
4241-4250
Foley, R. J.
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Galbany, L.
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D'Andrea, C. B.
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González-Gaitán, S.
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Kessler, R.
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Kovacs, E.
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Lidman, C.
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Sako, M.
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Sullivan, M.
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Abdalla, F. B.
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Annis, J.
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Bechtol, K.
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Benoit-Lévy, A.
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Buckley-Geer, E.
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Burke, D. L.
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Carnero Rosell, A.
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Carrasco Kind, M.
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Carretero, J.
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Castander, F. J.
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Cunha, C. E.
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da Costa, L. N.
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Desai, S.
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Diehl, H. T.
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Doel, P.
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Eifler, T. F.
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Finley, D. A.
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Flaugher, B.
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Frieman, J.
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García-Bellido, J.
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Goldstein, D. A.
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Gruen, D.
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Gruendl, R. A.
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Gschwend, J.
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Gutierrez, G.
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Kim, A. G.
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Krause, E.
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Kuehn, K.
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Kuropatkin, N.
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Lahav, O.
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Lima, M.
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Maia, M. A. G.
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March, M.
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Martini, P.
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Miquel, R.
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Nugent, P.
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Plazas, A. A.
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Romer, A. K.
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Scarpine, V.
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Schubnell, M.
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Sevilla-Noarbe, I.
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Nichol, R.C.
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The Dark Energy Survey Collaboration
Foley, R. J.
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Galbany, L.
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D'Andrea, C. B.
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González-Gaitán, S.
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Kessler, R.
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Kovacs, E.
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Lidman, C.
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Sako, M.
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Sullivan, M.
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Abdalla, F. B.
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Annis, J.
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Bechtol, K.
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Benoit-Lévy, A.
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Buckley-Geer, E.
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Burke, D. L.
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Carnero Rosell, A.
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Carrasco Kind, M.
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Carretero, J.
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Castander, F. J.
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Cunha, C. E.
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da Costa, L. N.
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Desai, S.
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Diehl, H. T.
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Doel, P.
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Eifler, T. F.
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Finley, D. A.
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Flaugher, B.
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Frieman, J.
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García-Bellido, J.
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Goldstein, D. A.
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Gruen, D.
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Gruendl, R. A.
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Gschwend, J.
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Gutierrez, G.
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Kim, A. G.
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Krause, E.
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Kuehn, K.
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Kuropatkin, N.
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Lahav, O.
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Lima, M.
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Maia, M. A. G.
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March, M.
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Martini, P.
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Miquel, R.
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Nugent, P.
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Plazas, A. A.
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Romer, A. K.
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Scarpine, V.
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Schubnell, M.
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Sevilla-Noarbe, I.
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Nichol, R.C.
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Foley, R. J., Galbany, L., D'Andrea, C. B., González-Gaitán, S., Kessler, R., Kovacs, E., Lidman, C., Sako, M., Sullivan, M., Abdalla, F. B., Annis, J., Bechtol, K., Benoit-Lévy, A., Buckley-Geer, E., Burke, D. L., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Castander, F. J., Cunha, C. E., da Costa, L. N., Desai, S., Diehl, H. T., Doel, P., Eifler, T. F., Finley, D. A., Flaugher, B., Frieman, J., García-Bellido, J., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Kim, A. G., Krause, E., Kuehn, K., Kuropatkin, N., Lahav, O., Lima, M., Maia, M. A. G., March, M., Martini, P., Miquel, R., Nugent, P., Plazas, A. A., Romer, A. K., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I. and Nichol, R.C. , The Dark Energy Survey 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), 4241-4250. (doi:10.1093/mnras/stx1467).

Record type: Article

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.

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e-pub ahead of print date: 13 June 2017
Published date: 1 October 2017
Keywords: supernovae: general, supernovae: individual: DES15E2mlf
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Identifiers

Local EPrints ID: 470523
URI: http://eprints.soton.ac.uk/id/eprint/470523
DOI: doi:10.1093/mnras/stx1467
ISSN: 1365-2966
PURE UUID: eebd380b-8b72-4f8c-bf8c-738e92bcfa4f
ORCID for M. Sullivan: ORCID iD orcid.org/0000-0001-9053-4820

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Date deposited: 12 Oct 2022 16:42
Last modified: 17 Mar 2024 03:30

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Contributors

Author: R. J. Foley
Author: L. Galbany
Author: C. B. D'Andrea
Author: S. González-Gaitán
Author: R. Kessler
Author: E. Kovacs
Author: C. Lidman
Author: M. Sako
Author: M. Sullivan ORCID iD
Author: F. B. Abdalla
Author: J. Annis
Author: K. Bechtol
Author: A. Benoit-Lévy
Author: E. Buckley-Geer
Author: D. L. Burke
Author: A. Carnero Rosell
Author: M. Carrasco Kind
Author: J. Carretero
Author: F. J. Castander
Author: C. E. Cunha
Author: L. N. da Costa
Author: S. Desai
Author: H. T. Diehl
Author: P. Doel
Author: T. F. Eifler
Author: D. A. Finley
Author: B. Flaugher
Author: J. Frieman
Author: J. García-Bellido
Author: D. A. Goldstein
Author: D. Gruen
Author: R. A. Gruendl
Author: J. Gschwend
Author: G. Gutierrez
Author: A. G. Kim
Author: E. Krause
Author: K. Kuehn
Author: N. Kuropatkin
Author: O. Lahav
Author: M. Lima
Author: M. A. G. Maia
Author: M. March
Author: P. Martini
Author: R. Miquel
Author: P. Nugent
Author: A. A. Plazas
Author: A. K. Romer
Author: V. Scarpine
Author: M. Schubnell
Author: I. Sevilla-Noarbe
Author: R.C. Nichol
Corporate Author: The Dark Energy Survey Collaboration

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