Journal articles
Photometric redshifts for type Ia supernovae in the supernova legacy survey
N. Palanque-Delabrouille
1
V. Ruhlmann-Kleider
1
S. Pascal
J. Rich
1
J. Guy
2
G. Bazin
1
P. Astier
2
C. Balland
2
S. Basa
3
R. G. Carlberg
4
A. Conley
4
D. Fouchez
5
D. Hardin
2
I. M. Hook
6
D. A. Howell
4
R. Pain
2
K. Perrett
4
C. J. Pritchet
7
N. Regnault
2
M. Sullivan
4
1
IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (CEA Saclay
F-91191 Gif sur Yvette cedex - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRFU (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
2
LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies (Barre 12-22, 1er étage 4 Place Jussieu 75252 Paris Cedex 05 - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 (4 place Jussieu - 75005 Paris - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- UPD7 - Université Paris Diderot - Paris 7 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7585 (France)
3
LAM - Laboratoire d'Astrophysique de Marseille (Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7326 (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- AMU - Aix Marseille Université : UMR7326 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- CNES - Centre National d'Études Spatiales [Toulouse] : UMR7326 (18 avenue Edouard Belin 31401 Toulouse - France)
4
Department of Astronomy and Astrophysics [Universty of Toronto] (50 St. George St, Room 1403, Toronto, ON M5S 3H4 - Canada)
- University of Toronto (27 King's College Circle, Toronto M5S 1A1 - Canada)
5
CPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7346 (France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- AMU - Aix Marseille Université : UMR7346 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
6
University of Oxford Astrophysics (University of Oxford Astrophysics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK. - United Kingdom)
- University of Oxford Astrophysics (France)
7
Department of Physics and Astronomy [Victoria] (University of Victoria, PO Box 1700 STN CSC, Victoria, BC V8W 2Y2 - Canada)
- UVIC - University of Victoria [Canada] (University of Victoria 3800 Finnerty Road Victoria BC V8P 5C2 Canada - Canada)
Abstract : We present a method using the SALT2 light curve fitter to determine the redshift of type Ia supernovae in the Supernova Legacy Survey (SNLS) based on their photometry in g', r', i' and z'. On 289 supernovae of the first three years of SNLS data, we obtain a precision σΔ z/(1+z) = 0.022 on average up to a redshift of 1.0, with a higher precision of 0.016 for z < 0.45 and a lower one of 0.025 for z > 0.45. The rate of events with |Δ z|/(1+z) > 0.15 (catastrophic errors) is 1.4%, and reduces to 0.4% when restricting the test sample of spectroscopically confirmed Type Ia supernovae. Both the precision and the rate of catastrophic errors are better than what can be currently obtained using host galaxy photometric redshifts. Photometric redshifts of this precision may be useful for future experiments which aim to discover up to millions of supernovae Ia but without spectroscopy for most of them.
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Journal articles
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http://hal.in2p3.fr/in2p3-00545100
Contributor : Pierre Astier <>
Submitted on : Thursday, December 9, 2010 - 3:51:56 PM
Last modification on : Friday, April 10, 2020 - 4:57:12 PM
Contributor : Pierre Astier <>
Submitted on : Thursday, December 9, 2010 - 3:51:56 PM
Last modification on : Friday, April 10, 2020 - 4:57:12 PM
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- HAL Id : in2p3-00545100, version 1
- BIBCODE : 2010A&A...514A..63P
- DOI : 10.1051/0004-6361/200913283
Collections
IN2P3 | INSU | UPMC | LPNHE | CPPM | CNRS | LAM | UNIV-PARIS7 | OSU-INSTITUT-PYTHEAS | UNIV-AMU | CEA | DSM-IRFU | USPC | CEA-DRF | SORBONNE-UNIVERSITE | SU-SCIENCES | UNIV-PARIS | UP-SCIENCES
Citation
N. Palanque-Delabrouille, V. Ruhlmann-Kleider, S. Pascal, J. Rich, J. Guy, et al.. Photometric redshifts for type Ia supernovae in the supernova legacy survey. Astronomy and Astrophysics - A&A, EDP Sciences, 2010, 514, pp.63. ⟨10.1051/0004-6361/200913283⟩. ⟨in2p3-00545100⟩
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