Péridier Library Abstract Archive

Abstract No. UT 332

Title: Accurate Wavenumbers for Mid-Infrared Fine-Structure Lines
Author(s): Douglas M. Kelly and John H. Lacy
Keywords: atomic data --- infrared: ISM: lines and bands --- planetary nebulae: Individual (NGC 7027)
E-Mail: Douglas M. Kelly (to request a full copy of this paper)
Preprint: 9509071 Document source or PostScript
Release date: 10/04/95 14:30:33
Publication status: accepted by Astrophysical Journal (Letters)
Comments: 12 pages, 2 figures

We present accurate new wavenumbers for a set of 13 mid-infrared fine-structure lines. The wavenumbers were determined from observations of the planetary nebula NGC 7027 and of the red supergiant Alpha Scorpii. Most of the new wavenumbers are good to within 0.0025%, or 8 km/s. We provide details on the measurements and present an analysis of the errors. In addition, we present the first observations of hyperfine splitting in the [Na IV] 1106 cm-1 line.