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Title:
Spectrophotometric observations of Delta Capricorni
Authors:
Srivastava, R. K.; Srivastava, J. B.; Joshi, S. C.
Affiliation:
AA(Uttar Pradesh State Observatory, Nainital, India), AB(Uttar Pradesh State Observatory, Nainital, India), AC(Uttar Pradesh State Observatory, Nainital, India)
Publication:
Astrophysics and Space Science (ISSN 0004-640X), vol. 143, no. 1, April 1988, p. 107-112. (Ap&SS Homepage)
Publication Date:
04/1988
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL CATALOGS, ECLIPSING BINARY STARS, H ALPHA LINE, LIGHT CURVE, STELLAR LUMINOSITY, STELLAR SPECTROPHOTOMETRY, ASTRONOMICAL PHOTOMETRY, EMISSION SPECTRA, LINE SPECTRA
DOI:
10.1007/BF00636759
Bibliographic Code:
1988Ap&SS.143..107S

Abstract

Spectrophotometric observations of the eclipsing binary system δ Capricorni, covering the wavelength interval λλ3300 - 7300 Å, have been presented. Comparison of the standard spectral scans of δ Cap with the spectral scans of the stars of known spectral types and luminosity classes taken from the Breger (1976) catalogue shows that, near the phase of secondary eclipse, δ Cap shows the spectral-luminosity type as A8 - 9 III. This is in agreement with the photometric findings of Srivastava (1987). Hα emission is not visible convincingly, however, some irregularities are apparent, at least in two scans, around the Hα region.

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