An Integral Field Spectrograph For Snap Supernova Studies

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

IR SPACE TELESCOPES AND INSTRUMENTS, PTS 1 AND 2（2003）

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Abstract

A well-adapted spectrograph concept has been developed for the SNAP (SuperNova/Acceleration Probe) experiment. The goal is to ensure proper identification of Type la 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 (Rsimilar to100), constant through the wavelength range (0.35-1.7 mum), adapted to the scientific goals of the mission.

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Key words

SNAP,supernovae,integral field,spectrograph,image slicer

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