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Title:A UNIQUE EXPERIMENTAL APPROACH FOR IDENTIFYING DESORBED INTERSTELLAR/COMETARY ICE SPECIES VIA SUBMILLIMETER SPECTROSCOPY
Author(s):Yocum, Katarina
Contributor(s):Widicus Weaver, Susanna L.; Milam, Stefanie N; Gerakines, Perry A.; Schwaiger, Chris ; Todd, Ethan
Subject(s):Astronomy
Abstract:A new experimental approach to studying interstellar and cometary ice analogs has been designed that uses millimeter/submillimeter (mm/submm) spectroscopy coupled with mass spectrometry to identify desorbed gas-phase species, and infrared (IR) spectroscopy to monitor the photochemistry within icy mantles photolyzed by ultra-violet (UV) light. Rotational spectroscopy provides several benefits for laboratory ice studies including the capability of distinguishing structural (e.g. methyl formate (HCOOCH$_{3}$) and glycolaldehyde (HCOCH$_{2}$OH)) and conformational (e.g. cis- and trans-methyl formate) isomers, determining the rotational temperature of desorbed species, and laboratory spectra that are directly comparable to mm/submm spectra from ground- and space-based telescopes. Here we will show how surface binding energy can be determined via mm/submm spectroscopic detection of thermally desorbed ices, and how to combine IR spectroscopy, mass spectrometry, and mm/submm spectroscopy to determine UV photoproducts of methanol ices.
Issue Date:22-Jun-20
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/107655
Date Available in IDEALS:2020-06-26


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