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The BE II λ 3130 Å Region in the Spectra of Vega and Sirius

Published online by Cambridge University Press:  04 August 2017

R. F. Griffin  and
R. E. M. Griffin
R. F. Griffin
Affiliation:
Cambridge Observatories and Mount Wilson Observatory
R. E. M. Griffin
Affiliation:
Cambridge Observatories and Mount Wilson Observatory

Extract

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Spectrograms of very high quality have been obtained of Vega and Sirius with the Mount Wilson 100-inch (2.5-m) telescope and coudé spectrograph. Examples of these plates, showing the Be II region in the ultraviolet, are exhibited. The reciprocal dispersion is 0.83 Å/mm (83 nm/m) and the FWHM is about 19 mÅ (1.9 pm). The spectrograms have a trailed width of 3 mm and are on IIa or IIIa emulsions.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 439
Copyright
Copyright © Reidel 1985