English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

In a well‐aimed search based on the recently published Gaia DR2 radial velocity data and performed with the robotic TIGRE telescope, we have discovered 19 bright (  m   V   < 7.66  mag) spectroscopic binary stars. We present the radial velocity curves of five of these stars (HD 20656, HD 27259, HD 98812, HD 150600, HD 193082) with periods of   P  < 365  days. We determined their orbital parameters using the toolkit RadVel. The complete set of basic stellar parameters (effective temperature, surface gravity, metallicity, mass, and age) of the primary stars are determined using the observed intermediate resolution spectra (  R  ≈ 20,000 ) with iSpec and a comparison of the position in the Hertzsprung‐Russell diagram with stellar evolution tracks. All five primary stars have already evolved to the giant phase and possess low‐mass secondaries, which do not noticeably affect the spectra. Finally, we determined the minimum masses of the secondary stars of the binary systems and present conclusions about the properties of the binary systems.

Bright spectroscopic binaries: I. Orbital parameters of five systems with periods of P < 365 days