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An Extended Scheme of Spectral Classification for Objective Prism Spectra

Published online by Cambridge University Press:  26 July 2016

P.A. Hantzios ,
E. Kontizas ,
F. Pasian ,
A. Dapergolas ,
M. Kontizas  and
R. Smareglia
P.A. Hantzios
Affiliation:
Astronomical Institute, National Observatory of Athens, P.O. Box 20048, GR 11810, Thission, Athens, Greece
E. Kontizas
Affiliation:
Astronomical Institute, National Observatory of Athens, P.O. Box 20048, GR 11810, Thission, Athens, Greece
F. Pasian
Affiliation:
Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, 34131 Trieste, Italy
A. Dapergolas
Affiliation:
Astronomical Institute, National Observatory of Athens, P.O. Box 20048, GR 11810, Thission, Athens, Greece
M. Kontizas
Affiliation:
Section of Astrophysics, Astronomy and Mechanics, Dept. of Physics, University of Athens, Panepistimiopolis, GR 15783, Zographou, Athens, Greece
R. Smareglia
Affiliation:
Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, 34131 Trieste, Italy

Abstract

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A spectral classification scheme has been developed for objective prism spectra of LMC stars, taken with the 1.2 m UK Schmidt Telescope in Australia. Various line ratios, discontinuities, and continuum intensities have been used as criteria. The scheme is a 2-D system (spectral type — luminosity class), and the criteria are given in graphical form. The typical accuracy of our scheme is 2 subdivisions of spectral type. Comparison of our types with those given by other authors for common stars yields a very good correlation with deviations within our accuracy.

Type
Part Five: Image Detection, Cataloguing and Classification
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 255 - 257
Copyright
Copyright © Kluwer 1994 

References

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Hantzios, P.A., Dapergolas, A., Kontizas, M. and Kontizas, E., 1993. ‘Memoirs of the National Observatory of Athens’, Series I, Astronomy, #35.Google Scholar
Kontizas, E., Dapergolas, A. and Kontizas, M., 1986. Astron. Astrophys. Suppl. Ser., 66, 51.Google Scholar
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Seitter, W.C., 1975. ‘Atlas of Obj. Prism Spectra’, Bonner Spectral Atlas, Ferd. Dummlers Verlag, Bonn.Google Scholar