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Selecting superluminous supernovae in faint galaxies from the first year of the Pan-STARRS1 Medium Deep Survey

McCrum, M.; Smartt, S.J.; Rest, A.; Smith, K.; Kotak, R.; Rodney, S.A.; Young, D.R.; Chornock, R.; Berger, E.; Foley, R.J.; Fraser, M.; Wright, D.; Scolnic, D.; Tonry, J.L.; Urata, Y.; Huang, K.; Pastorello, A.; Botticella, M.T.; Valenti, S.; Mattila, S.; Kankare, E.; Farrow, D.J.; Huber, M.E.; Stubbs, C.W.; Kirshner, R.P.; Bresolin, F.; Burgett, W.S.; Chambers, K.C.; Draper, P.W.; Flewelling, H.; Jedicke, R.; Kaiser, N.; Magnier, E.A.; Metcalfe, N.; Morgan, J.S.; Price, P.A.; Sweeney, W.; Wainscoat, R.J.; Waters, C.

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Authors

M. McCrum

S.J. Smartt

A. Rest

K. Smith

R. Kotak

S.A. Rodney

D.R. Young

R. Chornock

E. Berger

R.J. Foley

M. Fraser

D. Wright

D. Scolnic

J.L. Tonry

Y. Urata

K. Huang

A. Pastorello

M.T. Botticella

S. Valenti

S. Mattila

E. Kankare

D.J. Farrow

M.E. Huber

C.W. Stubbs

R.P. Kirshner

F. Bresolin

W.S. Burgett

K.C. Chambers

H. Flewelling

R. Jedicke

N. Kaiser

E.A. Magnier

J.S. Morgan

P.A. Price

W. Sweeney

R.J. Wainscoat

C. Waters



Abstract

The Pan-STARRS1 (PS1) survey has obtained imaging in five bands (griz yP1) over 10 Medium Deep Survey (MDS) fields covering a total of 70 square degrees. This paper describes the search for apparently hostless supernovae (SNe) within the first year of PS1 MDS data with an aim of discovering superluminous supernovae (SLSNe). A total of 249 hostless transients were discovered down to a limiting magnitude of MAB ∼ 23.5, of which 76 were classified as Type Ia supernovae (SNe Ia). There were 57 SNe with complete light curves that are likely core-collapse SNe (CCSNe) or type Ic SLSNe and 12 of these have had spectra taken. Of these 12 hostless, non-Type Ia SNe, 7 were SLSNe of type Ic at redshifts between 0.5 and 1.4. This illustrates that the discovery rate of type Ic SLSNe can be maximized by concentrating on hostless transients and removing normal SNe Ia. We present data for two possible SLSNe; PS1-10pm (z = 1.206) and PS1-10ahf (z = 1.1), and estimate the rate of type Ic SLSNe to be between 3+3−2×10−5 and 8+2−1×10−5 that of the CCSN rate within 0.3 ≤ z ≤ 1.4 by applying a Monte Carlo technique. The rate of slowly evolving, type Ic SLSNe (such as SN2007bi) is estimated as a factor of 10 lower than this range.

Citation

McCrum, M., Smartt, S., Rest, A., Smith, K., Kotak, R., Rodney, S., …Waters, C. (2015). Selecting superluminous supernovae in faint galaxies from the first year of the Pan-STARRS1 Medium Deep Survey. Monthly Notices of the Royal Astronomical Society, 448(2), 1206-1231. https://doi.org/10.1093/mnras/stv034

Journal Article Type Article
Acceptance Date Jan 6, 2015
Publication Date Apr 1, 2015
Deposit Date Aug 3, 2015
Publicly Available Date Sep 3, 2015
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 448
Issue 2
Pages 1206-1231
DOI https://doi.org/10.1093/mnras/stv034
Keywords Supernovae: general, Supernovae: individual: PS1-10pm, Supernovae: individual: PS1-10ahf.
Public URL https://durham-repository.worktribe.com/output/1401725

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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.






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