Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252..163b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Sept. 1, 1991, p. 163-170. Research supported by N
Astronomy and Astrophysics
Astronomy
5
Astronomical Photometry, Star Distribution, Stellar Spectra, Data Reduction, Spectral Methods, Stellar Luminosity, Templates
Scientific paper
The stellar spectral classification that can be achieved with very low-dispersion spectroscopy is examined. Several methods are applied to slitless spectra taken from the automated grens plates analysis project undertaken at Laval University. It is suggested that an accuracy in B - V of about 0.1 mag at B approximating 19 for stars bluer than B - V below 0.8 mag or better for redder stars can be obtained by probing the continuum. Results from DDO-like photometry show that grens data behave similarly to the Gunn and Stryker library of standard stars for many indices. Results of multivariate analysis are coherent with the stellar spectral classification and provide a powerful and objective means of cataloging spectra of the same spectral shape.
Beauchemin Mario
Borra Ermanno F.
Lévesque Simon
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