Estimating radial velocity and improving line identification within the Herschel/SPIRE automated spectral feature catalog
Lethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astronomy
The Herschel space observatory housing the Spectral and Photometric Imaging Receiver (SPIRE) was commissioned to study the far-infrared Universe. Though Herschel’s mission has ended, much data processing is still required to extract all the available information from its observations. To help with data mining and preliminary analysis, the SPIRE Fourier transform spectrometer instrument team developed an automated spectral Feature Finder (FF) that extracts significant spectral features from SPIRE spectra. As part of this team I developed two modules, an automated radial velocity estimating routine which uses a pattern seeking algorithm to identify 12CO rotational emission, and a separate routine which conducts a dedicated search for neutral carbon fine structure transitions. This thesis provides an introduction to Fourier transform spectroscopy, then describes in detail the two modules I developed for the FF. Validation of these routines is presented, and their results, as they pertain to the public FF catalogue, are summarized.
Fourier transform spectroscopy , Spectral and Photometric Imaging Receiver , radial velocity estimating