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Investigations of CP and Normal Stars with Coadded Dominion Astrophysical Observatory Spectrograms

Published online by Cambridge University Press:  12 April 2016

Graham Hill  and
Saul J. Adelman
Graham Hill
Affiliation:
Dominion Astrophysical Observatory National Research Council of Canada Victoria, B. C. V8X 4M6, Canada
Saul J. Adelman
Affiliation:
Code 681, Laboratory for Astronomy and Solar Physics NASA Goddard Space Flight Center Greenbelt, MD 20771, USA

Abstract

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We describe the procedures developed at the Dominion Astrophysical Observatory to coadd high dispersion coude spectrograms and thus increase the signal-to-noise ratio in photographic data. These techniques can yield low noise spectra over a considerable wavelength range. Preliminary results of the analyses of such coadditions are shown to demonstrate the power of these procedures.

Type
Section II - Systematics, Photometry
Information
International Astronomical Union Colloquium , Volume 90: Upper Main Sequence Stars with Anomalous Abundances , 1986 , pp. 209 - 215
Copyright
Copyright © Reidel 1986

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