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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 358570.0, MPI für Astronomie / Publikationen_mpia
Spectral mapping reconstruction of extended sources
Authors:Smith, J. D. T.; Armus, L.; Dale, D. A.; Roussel, H.; Sheth, K.; Buckalew, B. A.; Jarrett, T. H.; Helou, G.; Kennicutt, R. C.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Publications of the Astronomical Society of the Pacific
Volume:119
Start Page:1133
End Page:1144
Audience:Not Specified
Abstract / Description:Three-dimensional spectroscopy of extended sources is typically performed with dedicated integral field spectrographs. We describe a method of reconstructing full spectral cubes, with two spatial and one spectral dimension, from rastered spectral mapping observations employing a single slit in a traditional slit spectrograph. When the background and image characteristics are stable, as is often achieved in space, the use of traditional long slits for integral field spectroscopy can substantially reduce instrument complexity over dedicated integral field designs, without loss of mapping efficiency-particularly compelling when a long-slit mode for single unresolved source follow-up is separately required. We detail a custom flux-conserving cube reconstruction algorithm, discuss issues of extended-source flux calibration, and describe CUBISM, a tool that implements these methods for spectral maps obtained with the Spitzer Space Telescope's Infrared Spectrograph.
Free Keywords:Astronomical Techniques
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2007PASP..119.1133S
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