Commensurability between Intermidiate NRP modes of zeta OPH from Multi-site Observations

Details Commensurability between Intermidiate NRP modes of zeta OPH from Multi-site Observations Commensurability between Intermidiate NRP modes of zeta OPH from Multi-site Observations

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.5910k&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #59.10; Bulletin of the American Astronomical Society, Vol. 28, p.918

Astronomy and Astrophysics

Astronomy

Scientific paper

From simultaneous multi-site high-resolution spectroscopic and photometric observations of zeta Ophiuchi in 1993, we find that the line-profile variations of HeI lambda 6678 are well reproduced by two large and some small amplitude sinusoids. The periods of the two principal sinusoids, 2.018 hr and 3.337 hr are commensurate with a superperiod of 10.05 hr. Although our data in the period is limited, our photometric observations confirmed again very small amplitude of the light variations, close to their detection limit. No counterpart of the 2.018 hr and 3.337 hr periods can be reliably detected.

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