A Survey of Stellar Families Multiplicity of Solar-Type Stars
Abstract
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 less than or equal to B less than or equal to 1.0 (~F6-K3), and constrained by absolute magnitude and color to exclude evolved stars. These criteria are equivalent to selecting all dwarf and subdwarf stars within 25 pc with V-band flux between 0.1 and 10 times that of the Sun giving us a physical basis for the term "solar-type." New observational aspects of this work include surveys for (1) very close companions with long-baseline interferometry at the Center for High Angular Resolution Astronomy 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 covering many different techniques. The results presented here include four new common proper-motion companions discovered by blinking archival images. Additionally, the spectroscopic data searched reveal five new stellar companions. Our synthesis of results from many methods and sources results in a thorough evaluation of stellar and brown dwarf companions to nearby Sun-like stars.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2010
- Accession Number
- ADA529443
Entities
People
- Brian D. Mason
- David W. Latham
- Deepak Raghavan
- Douglas R. Gies
- Geoffrey W. Marcy
- Harold A. . Mcalister
- Russel J. White
- Theo A. Ten Brummelaar
- Todd J. Henry
Organizations
- Georgia State University