The millimeter and submillimeter spectrum of AlCH3 (X̃1a1)

J. S. Robinson, L. M. Ziurys

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

The pure rotational spectrum of AlCH3 has been recorded using millimeter/submillimeter direct absorption techniques. This is the first time this species has been observed in the laboratory by any spectroscopic method. AlCH3 was created in a d.c. discharge by the reaction of aluminum vapor and dimethyl mercury. The K = 0, 1, 2, and 3 components in fourteen rotational transitions of this symmetric top molecule were measured in the frequency range 188-517 GHz and several lines recorded for K = 4, 5 and 6 ladders as well. From these data, rotational parameters have been accurately determined. This study confirms the structure predicted for AlCH3 from theoretical calculations, as well as provides precise rest frequencies. Aluminum-bearing molecules have been observed in the late-type carbon star IRC +10216, which also has a large abundance of CH4. Hence, AlCH3 may be detectable in this object and perhaps in other sources.

Original languageEnglish (US)
Pages (from-to)L131-L134
JournalAstrophysical Journal
Volume472
Issue number2 PART II
DOIs
StatePublished - 1996

Keywords

  • ISM: molecules
  • Line: identification
  • Methods: laboratory
  • Molecular data

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'The millimeter and submillimeter spectrum of AlCH<sub>3</sub> (X̃<sup>1</sup>a<sub>1</sub>)'. Together they form a unique fingerprint.

  • Cite this