Laboratory Detection and Pure Rotational Spectrum of AlSH (X˜1A')

Details Laboratory Detection and Pure Rotational Spectrum of AlSH (X˜1A') Laboratory Detection and Pure Rotational Spectrum of AlSH (X˜1A')

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...639l.107j&link_type=abstract

The Astrophysical Journal, Volume 639, Issue 2, pp. L107-L110.

Astronomy and Astrophysics

Astronomy

6

Astrochemistry, Ism: Molecules, Line: Identification, Methods: Laboratory, Molecular Data, Stars: Agb And Post-Agb

Scientific paper

The pure rotational spectrum of AlSH (X˜1A') has been recorded using millimeter and submillimeter direct absorption techniques. Measurements of its deuterium isotopomer have been recorded as well. This study is the first laboratory detection of this molecule, which was created by the reaction of aluminum vapor and H2S. Nine and seven rotational transitions of AlSH and AlSD were measured, respectively, each consisting of Ka=0 through Ka=6 asymmetry components. From these data, rotational constants have been established. Calculation of an r0 structure indicates that AlSH is bent with an angle near 90°. These measurements will enable searches for AlSH to be carried out in circumstellar gas, where aluminum-bearing molecules, as well as H2S, are present.

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