Speckle interferometry of secondary components in nearby visual binaries
Andrei Tokovinin, Elliott P. Horch
TL;DR
This study used speckle interferometry to investigate secondary components in nearby binary stars, discovering new subsystems and providing insights into multiple-star formation scenarios.
Contribution
It presents new high-resolution observations of secondary subsystems in binaries, including six newly resolved systems and an astrometric orbit for one subsystem.
Findings
Six new secondary subsystems resolved
High incidence of secondary subsystems supports formation theories
Astrometric orbit of Ba,Bb with 117-year period deduced
Abstract
Statistical characterization of secondary subsystems in binaries helps to distinguish between various scenarios of multiple-star formation. The DSSI speckle instrument was used at the Gemini-N telescope for several hours in 2015 July to probe binarity of 25 secondary components in nearby solar-type binaries. Six new subsystems were resolved, with meaningful detection limits for the remaining targets. The large incidence of secondary subsystems agrees with other similar studies. The newly resolved subsystem HIP 115417 Ba,Bb causes deviations in the observed motion of the outer binary from which an astrometric orbit of Ba,Bb with a period of 117 years is deduced.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.