Using observations outside eclipse, we have computed new spectroscopic orbital elements for the single-line, eclipsing binary V1010 Oph. With observations inside eclipse, we have identified in the radial-velocity curve the Rossiter-McLaughlin rotational disturbance. Our analysis of the rotational disturbance for V1010 Oph suggests that the instantaneous orbital period of the star for the mean epoch of the eclipse observations is 0.66142298 d while its rotational velocity is 128 km s b The latter value used in combination with the appropriate spectroscopic and photometric data yields unexpectedly small masses for both component stars in the system.
We present improved spectroscopic orbital elements for the metallic, double-line binary ADS 8710 A. We argue that it is not very likely that ADS 8710 A is an eclipsing binary as some researchers have suggested but we do in turn propose that it might possibly form a triple system with its closest optical companion, ADS 8710 B.We also verify the spectroscopic orbital solutions published by Worek, Beardsley, and King (1978) and Abt and Levy (1985) for the metallic, single-line binary 41 Sextantis.
Analysis of the radial velocity variation of θ Virginis A has revealed that, superposed on an orbital variation with a period of 17 years, there is present an ultrashort periodic variation of 0.15-day. This secondary cycle is attributed to pulsation. The question of what type of pulsating star θ Virginis A may represent is discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.