Comparing the emission spectra of U and Th hollow cathode lamps and a new U line list
Context. Thorium hollow cathode lamps (HCLs) are used as frequency calibrators for many high resolution astronomical spectrographs, some of which aim for Doppler precision at the 1 m s-1 level. Aims: We aim to determine the most suitable combination of elements (Th or U, Ar or Ne) for wavelength calibration of astronomical spectrographs, to
Sarmiento, L. F. et al.
Fecha de publicación:
10
2018