Phillips, Thomas G., Naylor, Bret J., Ade, Peter A. R. ![]() |
Abstract
Z-Spec is a broadband (195 - 310 GHz), direct-detection, millimeter-wave spectrometer with moderate resolution (R ~ 350) that we are building to observe CO rotational lines and atomic fine-structure lines in the recently discovered population of submillimeter galaxies. A large fraction of these sources cannot be identified optically and thus redshift determination is extremely difficult. The large instantaneous bandwidth of Z-Spec will allow measurement of redshifts up to z~4 via detection of two or more CO lines in a single spectrum. The spectrometer is based on a parallel-plate waveguide grating architecture that is substantially more compact than a conventional free-space grating system. The spectrometer and an array of 160 silicon nitride micromesh bolometers will be cooled to 100 mK to provide background-limited sensitivity. In addition to measuring the redshifts of sources discovered in submillimeter continuum surveys, Z-Spec will demonstrate a novel spectrometer concept well-suited for future far-infrared space missions.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy |
Uncontrolled Keywords: | Extremely high frequency ; Spectrometers ; Waveguides ; Bolometers ; Far infrared ; Free space ; Galactic astronomy ; Silicon |
Publisher: | SPIE |
ISBN: | 9780819446343 |
ISSN: | 0277-786X |
Last Modified: | 25 Oct 2022 10:02 |
URI: | https://orca.cardiff.ac.uk/id/eprint/60913 |
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