SIMBAD references

2016AJ....152....8K - Astron. J., 152, 8-8 (2016/July-0)

The impact of stellar multiplicity on planetary systems. I. The ruinous influence of close binary companions.


Abstract (from CDS):

The dynamical influence of binary companions is expected to profoundly influence planetary systems. However, the difficulty of identifying planets in binary systems has left the magnitude of this effect uncertain; despite numerous theoretical hurdles to their formation and survival, at least some binary systems clearly host planets. We present high-resolution imaging of 382 Kepler Objects of Interest (KOIs) obtained using adaptive-optics imaging and nonredundant aperture-mask interferometry on the Keck II telescope. Among the full sample of 506 candidate binary companions to KOIs, we super-resolve some binary systems to projected separations of ρ q > 0.4; we instead only found 23 companions (a 4.6σ deficit), many of which must be wider pairs that are only close in projection. When the binary population is parametrized with a semimajor axis cutoff acut and a suppression factor inside that cutoff Sbin, we find with correlated uncertainties that inside {a}cut={47}{-23}^{+59} au, the planet occurrence rate in binary systems is only §bin={0.34}{-0.15}^{+0.14} times that of wider binaries or single stars. Our results demonstrate that a fifth of all solar-type stars in the Milky Way are disallowed from hosting planetary systems due to the influence of a binary companion.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: close - binaries: general - binaries: visual - planets and satellites: detection - planets and satellites: dynamical evolution and stability - planets and satellites: formation

VizieR on-line data: <Available at CDS (J/AJ/152/8): tables1-7.dat>

Simbad objects: 389

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