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Proceedings Paper

A small space telescope to conduct a large spectroscopic survey of galaxies
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Paper Abstract

One of the key goals of NASA’s astrophysics program is to answer the question: How did galaxies evolve into the spirals and elliptical galaxies that we see today? We describe a mission concept called Galaxy Evolution Spectroscopic Explorer (GESE) to address this question by making a large spectroscopic survey of galaxies at redshift, z~1-2 (lookback times of 8-10 billion years). GESE is a 1.5-m space telescope with a 3-channel multi-object slit spectrograph that can obtain spectra of ~400 galaxies per exposure. Together, the 3 channels cover the spectral range, 0.2-1.6 μm at a resolving power, R~400. (This observed spectral range corresponds to 0.1-0.8 μm in the restframe of a galaxy at a redshift, z=1 galaxy.) The mission concept takes advantage of two new technological advances: (1) light-weighted, wide field of view telescope mirrors, and (2) the Digital Micromirror Device (DMD) to be used as a slit generator in a multichannel (UV, optical, NIR), multi-object slit spectrograph.

Paper Details

Date Published: 26 September 2013
PDF: 11 pages
Proc. SPIE 8860, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI, 88600D (26 September 2013); doi: 10.1117/12.2023730
Show Author Affiliations
Sara R. Heap, NASA Goddard Space Flight Ctr. (United States)
Qian Gong, NASA Goddard Space Flight Ctr. (United States)
Tony Hull, The Univ. of New Mexico (United States)
Jeffrey Kruk, NASA Goddard Space Flight Ctr. (United States)
Lloyd Purves, NASA Goddard Space Flight Ctr. (United States)
Massimo Robberto, Space Telescope Science Institute (United States)


Published in SPIE Proceedings Vol. 8860:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI
Howard A. MacEwen; James B. Breckinridge, Editor(s)

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