Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apjs..134..319b&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 134, Issue 2, pp. 319-321.
Astronomy and Astrophysics
Astronomy
11
Ism: Molecules, Methods: Laboratory, Molecular Data, Radio Lines: Ism
Scientific paper
The simplest monosaccharide, glycolaldehyde (CH2OHCHO), has recently been detected toward the Galactic center in the source Sgr B2(N) at five frequencies from 71-104 GHz. None of the individual lines used in the detection had been measured previously in the laboratory; rather, their frequencies were predicted based on lower frequency measurements. We have now recorded and analyzed many new rotational transitions of glycolaldehyde through 354 GHz using two spectrometers. Lines through 48 GHz in frequency were measured with a spectrometer that uses Stark modulation, while the higher frequency transitions were measured with a FASSST (Fast Scan Submillimeter Spectroscopic Technique) apparatus. Analysis of the data has allowed us to confirm the interstellar identifications and to predict the frequencies of many additional lines not measured in the laboratory.
Butler Rebecca A. H.
de Lucia Frank C.
Herbst Eric
Horn Anne
Møllendal Harald
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