Improved frequencies of rotational transitions of52CrH in the 6Σ+ ground state

Jeremy J. Harrison, John M. Brown, De Wayne T. Halfen, Lucy M. Ziurys

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Previous mid-infrared, far-infrared, and new submillimeter data relating solely to 52CrH in its X6Σ+ state have been reanalyzed by a least-squares fit using a Hund's case (b) Hamiltonian to determine the best obtainable set of parameters for the molecule. In particular, the fine structure and hyperfine constants have been improved. From these parameters, transition frequencies are determined that are more reliable than those published previously; the latter show systematic errors of up to 15 MHz. Such frequencies will facilitate the identification of CrH in the interstellar medium.

Original languageEnglish (US)
Pages (from-to)1143-1147
Number of pages5
JournalAstrophysical Journal
Volume637
Issue number2 I
DOIs
StatePublished - Feb 1 2006

Keywords

  • Astrochemistry
  • ISM: lines and bands
  • ISM: molecules
  • Line: identification
  • Molecular data
  • Stars: AGB and post-AGB
  • Stars: low-mass, brown dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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