The DDO Close Binary Spectroscopic Program

TL;DR

This paper summarizes a nine-year spectroscopic survey of 162 short-period bright binary stars, providing a significant legacy of 150 SB2 and 5 SB1 orbits that enhances understanding of close binary systems.

Contribution

It presents the main results from a comprehensive radial velocity survey of short-period binaries conducted at DDO, including a large set of new orbital solutions.

Findings

150 SB2 orbits obtained

5 SB1 orbits obtained

Enhanced understanding of short-period binary characteristics

Abstract

The survey of radial velocity orbits for short period (P < 1 day), bright (V < 10, with a few fainter stars) conducted at the David Dunlap Observatory in the last 9 years before its closure in 2008 included 162 binaries and resulted in 150 SB2 orbits and 5 SB1 spectroscopic orbits thus becoming one of the main legacies of DDO. The paper summarizes the main results from the survey.