Rapidly evolving transients in the Dark Energy Survey

M. Pursiainen; M. Childress; M. Smith; S. Prajs; M. Sullivan; T. M. Davis; R. J. Foley; J. Asorey; J. Calcino; D. Carollo; C. Curtin; C. B. D'Andrea; K. Glazebrook; C. Gutierrez; S. R. Hinton; J. K. Hoormann; C. Inserra; R. Kessler; A. King; K. Kuehn; G. F. Lewis; C. Lidman; E. Macaulay; A. Moller; R. C. Nichol; M. Sako; N. E. Sommer; E. Swann; B. E. Tucker; S. A. Uddin; P. Wiseman; B. Zhang; T. M. C. Abbott; F. B. Abdalla; S. Allam; J. Annis; S. Avila; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; C. E. Cunha; C. Davis; J. De Vicente; H. T. Diehl; P. Doel; T. F. Eifler; B. Flaugher; P. Fosalba; J. Frieman; J. Garcia-Bellido; D. Gruen; R. A. Gruendl; G. Gutierrez; W. G. Hartley; D. L. Hollowood; K. Honscheid; D. J. James; T. Jeltema; N. Kuropatkin; T. S. Li; M. Lima; M. A. G. Maia; P. Martini; F. Menanteau; R. L. C. Ogando; A. A. Plazas; A. Roodman; E. Sanchez; V. Scarpine; R. Schindler; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. L. Tucker; A. R. Walker; DES Collaboration

doi:10.1093/mnras/sty2309

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Rapidly evolving transients in the Dark Energy Survey

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Rapidly evolving transients in the Dark Energy Survey

M. Pursiainen, M. Childress, M. Smith, S. Prajs, M. Sullivan, T. M. Davis, R. J. Foley, J. Asorey, J. Calcino, D. Carollo, …

Monthly notices of the Royal Astronomical Society, Vol.481(1), pp.894-917

11/21/2018

DOI: https://doi.org/10.1093/mnras/sty2309

Abstract

Astronomy & Astrophysics

Science & Technology

Physical Sciences

We present the results of a search for rapidly evolving transients in the Dark Energy Survey Supernova Programme. These events are characterized by fast light-curve evolution (rise to peak in less than or similar to 10 d and exponential decline in less than or similar to 30 d after peak). We discovered 72 events, including 37 transients with a spectroscopic redshift from host galaxy spectral features. The 37 events increase the total number of rapid optical transients by more than a factor of two. They are found at a wide range of redshifts (0.05 < z < 1.56) and peak brightnesses (-15.75 > M-g > -22.25). The multiband photometry is well fit by a blackbody up to few weeks after peak. The events appear to be hot (T approximate to 10 000-30 000 K) and large (R approximate to 10(14) -2 x 10(15) cm) at peak, and generally expand and cool in time, though some events show evidence for a receding photosphere with roughly constant temperature. Spectra taken around peak are dominated by a blue featureless continuum consistent with hot, optically thick ejecta. We compare our events with a previously suggested physical scenario involving shock breakout in an optically thick wind surrounding a core-collapse supernova, we conclude that current models for such a scenario might need an additional power source to describe the exponential decline. We find that these transients tend to favour star-forming host galaxies, which could be consistent with a core-collapse origin. However, more detailed modelling of the light curves is necessary to determine their physical origin.

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Title: Rapidly evolving transients in the Dark Energy Survey
Creators: M. Pursiainen - University of Southampton
M. Childress - University of Southampton
M. Smith - University of Southampton
S. Prajs - University of Southampton
M. Sullivan - University of Southampton
T. M. Davis - The University of Queensland
R. J. Foley - Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
J. Asorey - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
J. Calcino - The University of Queensland
D. Carollo - Osservatorio Astrofisico di Torino
C. Curtin - Swinburne University of Technology
C. B. D'Andrea - Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA
K. Glazebrook - Swinburne University of Technology
C. Gutierrez - University of Southampton
S. R. Hinton - The University of Queensland
J. K. Hoormann - The University of Queensland
C. Inserra - Cardiff University
R. Kessler - University of Chicago
A. King - The University of Queensland
K. Kuehn - Australian Astronomical Observatory
G. F. Lewis - The University of Sydney
C. Lidman - Australian National University
E. Macaulay - The University of Queensland
A. Moller - Centre National de la Recherche Scientifique
R. C. Nichol - University of Portsmouth
M. Sako - University of Pennsylvania
N. E. Sommer - Australian National University
E. Swann - University of Southampton
B. E. Tucker - Australian National University
S. A. Uddin - ARC Ctr Excellence All sky Astrophys, CAASTRO, Canberra, ACT, Australia
P. Wiseman - University of Southampton
B. Zhang - ARC Ctr Excellence All sky Astrophys, CAASTRO, Canberra, ACT, Australia
T. M. C. Abbott - Cerro Tololo Inter-American Observatory
F. B. Abdalla - Rhodes University
S. Allam - Fermi National Accelerator Laboratory
J. Annis - Fermi National Accelerator Laboratory
S. Avila - University of Portsmouth
D. Brooks - University College London
E. Buckley-Geer - Fermi National Accelerator Laboratory
D. L. Burke - SLAC National Accelerator Laboratory
A. Carnero Rosell - Laboratório Interinstitucional de e-Astronomia
M. Carrasco Kind - University of Illinois Urbana-Champaign
J. Carretero - Institute for High Energy Physics
F. J. Castander - Institut d'Estudis Espacials de Catalunya
C. E. Cunha - Stanford University
C. Davis - University of Louisville
J. De Vicente - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
H. T. Diehl - Fermi National Accelerator Laboratory
P. Doel - University College London
T. F. Eifler - Jet Propulsion Laboratory
B. Flaugher - Fermi National Accelerator Laboratory
P. Fosalba - Institut d'Estudis Espacials de Catalunya
J. Frieman - Fermi National Accelerator Laboratory
J. Garcia-Bellido - Universidad Autónoma de Madrid
D. Gruen - Kavli Institute for Particle Astrophysics and Cosmology
R. A. Gruendl - National Center for Supercomputing Applications
G. Gutierrez - Fermi National Accelerator Laboratory
W. G. Hartley - University College London
D. L. Hollowood - Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
K. Honscheid - The Ohio State University
D. J. James - Center for Astrophysics Harvard & Smithsonian
T. Jeltema - Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
N. Kuropatkin - Fermi National Accelerator Laboratory
T. S. Li - Fermi National Accelerator Laboratory
M. Lima - Laboratório Interinstitucional de e-Astronomia
M. A. G. Maia - Laboratório Interinstitucional de e-Astronomia
P. Martini - The Ohio State University
F. Menanteau - National Center for Supercomputing Applications
R. L. C. Ogando - Laboratório Interinstitucional de e-Astronomia
A. A. Plazas - Jet Propulsion Laboratory
A. Roodman - SLAC National Accelerator Laboratory
E. Sanchez - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
V. Scarpine - Fermi National Accelerator Laboratory
R. Schindler - SLAC National Accelerator Laboratory
R. C. Smith - Cerro Tololo Inter-American Observatory
M. Soares-Santos - Brandeis University, Martin A. Fisher School of Physics
F. Sobreira - Universidade Estadual de Campinas (UNICAMP)
E. Suchyta - Oak Ridge National Laboratory
M. E. C. Swanson - National Center for Supercomputing Applications
G. Tarle - Institute for High Energy Physics
D. L. Tucker - Fermi National Accelerator Laboratory
A. R. Walker - Cerro Tololo Inter-American Observatory
DES Collaboration
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.481(1), pp.894-917
Publisher: Oxford Univ Press
Number of pages: 24
Grant note: 240672; 291329; 306478 / European Research Council under the European Union'; European Research Council (ERC) 097.D-0709 / ESO Science Archive Facility U.S. Department of Energy; United States Department of Energy (DOE) Kavli Institute of Cosmological Physics at the University of Chicago CE110001020 / Australian Research Council Centre of Excellence for All-sky Astrophysics (CAAS-TRO); Australian Research Council Ministerio da Ciencia, Tecnologia e Inovacao; Spanish Government 1720756 / Division Of Astronomical Sciences; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) Ministry of Science and Education of Spain; Spanish Government Collaborating Institutions in the Dark Energy Survey 615929 / EU/FP7-ERC; European Union (EU)
Identifiers: 9924552836301921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Rapidly evolving transients in the Dark Energy Survey

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