An Integral Field Spectrograph for SNAP Supernova Identification

A. Ealet (1) , A. Bonissent (2) , R. Malina (1) , G.M. Bernstein , S. Basa (1) , O. Lefevre (1) , A. Mazure (1) , C. Bonneville (1) , C.W. Akerlof , G. Aldering , R. Amanullah , P. Astier (3) , E. Barrelet (3) , C. Bebek , L. Bergstrom , J. Bercovitz , M. Bester , C.R. Bower , W.C. Carithers , E.D. Commins , C. Day , S.E. Deustua , R.S. Digennaro , R.S. Ellis , M. Eriksson , A. Fruchter , J.-F. Genat (3) , G. Goldhaber , A. Goobar , D.E. Groom , S.E. Harris , P.R. Harvey , H.D. Heetderks , S.E. Holland , D. Huterer , A. Karcher , A.G. Kim , W.F. Kolbe , B. Kireger , R. Lafever , J. Lamoureux , M. Lampton , M.E. Levi , D.S. Levin , E.V. Linder , S.C. Loken , R. Massey , T. Mckay , S.M. Mckee , R. Miquel , E. Moertsell , N. Mostek , S. Mufson , J.A. Musser , P.E. Nugent , H.M. Oluseyi , R. Pain (3) , N.P. Palaio , D.H. Pankow , S. Perlmutter , R. Pratt , E. Prieto , A. Refregier , J. Rhodes , K.E. Robinson , N. Roe , M. Sholl , M.S. Schnubnell , G. Smadja (4) , G.F. Smoot , A. Spadafora , G. Tarle , A.D. Tomasch , H. von Der Lippe , D. Vincent (3) , J.-P. Walder , Gang Wang

1 LAM - Laboratoire d'Astrophysique de Marseille
2 CPPM - Centre de Physique des Particules de Marseille
3 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
4 IPNL - Institut de Physique Nucléaire de Lyon

A well-adapted spectrograph concept has been developed for the SNAP (SuperNova/Acceleration Probe) experiment. The goal is to ensure proper identification of Type Ia supernovae and to standardize the magnitude of each candidate by determining explosion parameters. An instrument based on an integral field method with the powerful concept of imager slicing has been designed and is presented in this paper. The spectrograph concept is optimized to have very high efficiency and low spectral resolution (R~100), constant through the wavelength range (0.35-1.7µm), adapted to the scientific goals of the mission.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]

A. Ealet, A. Bonissent, R. Malina, G.M. Bernstein, S. Basa, et al.. An Integral Field Spectrograph for SNAP Supernova Identification. IR Space Telescopes and Instruments, Aug 2002, Waikoloa, United States. pp.1169-1178, ⟨10.1117/12.461216⟩. ⟨in2p3-00020388⟩