The effects of unresolved duplicity on spectra of solar-type stars

Details The effects of unresolved duplicity on spectra of solar-type stars The effects of unresolved duplicity on spectra of solar-type stars

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975pasp...87..895b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 87, Dec. 1975, p. 895-899.

Astronomy and Astrophysics

Astronomy

6

D Lines, Main Sequence Stars, Spectral Line Width, Stellar Spectra, Abundance, Iron, Line Spectra, Spectrum Analysis

Scientific paper

Equivalent widths of selected lines in composite spectra of normal main-sequence stars are calculated. The Na D lines are significantly stronger in many composite spectra than in spectra of single stars of similar color. As a rule, Fe I lines are slightly weaker, and Fe II lines are slightly stronger in composite spectra. Effects on spectroscopic determinations of abundance ratios and surface gravities are discussed. It is suggested that spectrophotometric detection of relatively faint companions of solar-type stars is possible.

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