Studies of the Spectra of K Giants. I. a Table of Wave Lengths and Indentifications of Spectral Lines in the Region λλ 4000-5000.
Abstract
Accurate wave lengths and estimated intensities for about twentyeight hundred lines in the spectral region XX 4()o( 5000 of the two K giants a Serpentis and a Ursae Majoris have been obtained from coude' spectra having a dispersion ranging from 1.75 A/mm at X 4000 to 6.25 A/rnm at X 5000. The identifications with atomic and molecular lines are discussed. Thfrty-seven atoms and ions (some of them belonging to two ionization stages of the same element) have been definitely identified; twelve more are doubtful. Among the molecules, the strongest are CN and CH, followed by SiH, TiO, AtH, C2, SiN, and ZrO. In addition, SiF, AlO, and MgH were also discussed, but the evidence is inconclusive. Attention is called to a faint line at X 4339.27, one of whose contributors might be X 4339.29 D .
- Publication:
-
The Astrophysical Journal
- Pub Date:
- May 1952
- DOI:
- 10.1086/145554
- Bibcode:
- 1952ApJ...115..346G