A Survey of Stellar Families: Multiplicity of Solar-Type Stars

Understand

We present the results of a comprehensive assessment of companions to solar-type stars.

• A sample of 454 stars, including the Sun, was selected from the Hipparcos catalog with {\pi} > 40 mas, {\sigma}_{\pi}/{\pi} < 0.05, 0.5 < B - V < 1.0 (~ F6-K3), and constrained by absolute magnitude and color to exclude evolved stars.
• New observational aspects of this work include surveys for (1) very close companions with long-baseline interferometry at the CHARA Array, (2) close companions with speckle interferometry, and (3) wide proper motion companions identified by blinking multi-epoch archival images.
• In addition, we include the results from extensive radial-velocity monitoring programs and evaluate companion information from various catalogs.