Laboratory detection and pure rotational spectrum of AlSH (X̃1A′)

A. Janczyk, L. M. Ziurys

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The pure rotational spectrum of AlSH (X̃ 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 r 0 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.

Original languageEnglish (US)
Pages (from-to)L107-L110
JournalAstrophysical Journal
Issue number2 II
StatePublished - Mar 10 2006


  • Astrochemistry
  • ISM: molecules
  • Line: identification
  • Methods: laboratory
  • Molecular data
  • Stars: AGB and post-AGB

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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