New atomic data for the thorium–neodymium stellar chronometer
Open Access
- 1 May 1995
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 274 (1) , L37-L42
- https://doi.org/10.1093/mnras/274.1.l37
Abstract
New measurements of the Co I and VI lines blended with the thorium 4019-Å line used in the thorium-neodymium stellar chronometer have been made using a Fourier transform spectrometer. The hyperfine structure of the Co I transitions and the gf value of the V I line have been determined together with high-precision measurements of transition wavelengths. We also report on the hyperfine structure of the CoI line blended with the thorium line at 4086 Å, an alternative to the Th 4019-Å line.Keywords
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