Search for Close Stellar Encounters with the Solar System from Data on Nearby Dwarfs

Abstract

Trigonometric parallaxes measured with ground-based telescopes of the RECONS consortium as part of the CTIOPI program are used to search for stars that have either had an encounter with the solar system in the past or will have such an encounter in the future, at distances of less than a few parsecs. These are mainly low-mass dwarfs and subdwarfs of types M, L, and T currently at distances of less than 30 pc from the Sun. Six stars for which encounters with the solar orbit at distances of less than 1 pc are possible have been identified for the first time. For example, the minimum distance for the star **SOZ 3A will 0.72+/- 0.11 pc at an epoch of 103+/-44 thousand years in the future.

arXiv comment10 pages, 1 figure, 3 tables

References in corpus (32)

• The Seventh Data Release of the Sloan Digital Sky Survey
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• Local Kinematics and the Local Standard of Rest
• The Radial Velocity Experiment (RAVE): first data release
• Radial Velocities for 889 Late-type Stars
• The Radial Velocity Experiment (RAVE): Fifth Data Release
• The RAdial Velocity Experiment (RAVE): Fourth data release
• The Palomar/MSU Nearby Star Spectroscopic Survey III: Chromospheric Activity, M-dwarf Ages and the Local Star Formation History
• An All-Sky Catalog of Bright M Dwarfs
• Close encounters of the stellar kind
• The local surface density of disc matter mapped by Hipparcos
• The Solar Neighborhood XXXVII: The Mass-Luminosity Relation for Main Sequence M Dwarfs
• The Solar Neighborhood XXXII. The Hydrogen Burning Limit
• The Solar Neighborhood. XXXIII. Parallax Results from the CTIOPI 0.9m Program: Trigonometric Parallaxes of Nearby Low-Mass Active and Young Systems
• The Closest Known Flyby of a Star to the Solar System
• ULAS J141623.94$+$134836.3 - a faint common proper motion companion of a nearby L dwarf. Serendipitous discovery of a cool brown dwarf in UKIDSS DR6
• The Solar Neighborhood. XXII. Parallax Results from the CTIOPI 0.9m Program: Trigonometric Parallaxes of 64 Nearby Systems with 0\farcs5 $\le \mu \le$ 1\farcs0 yr${}^{-1}$ (SLOWMO sample)
• The Solar Neighborhood XXIV. Parallax Results from the CTIOPI 0.9-m Program: Stars with $\mu$ $\ge$ 1\farcs0 yr${}^{-1}$ (MOTION Sample) and Subdwarfs
• The Solar Neighborhood. XXXIV. A Search for Planets Orbiting Nearby M Dwarfs using Astrometry
• Analysis of the Z Distribution of Young Objects in the Galactic Thin Disk
• A 3D Search for Companions to 12 Nearby M-Dwarfs
• Trigonometric Parallaxes and Proper Motions of 134 Southern Late M, L, and T Dwarfs from the Carnegie Astrometric Planet Search Program
• On the accuracy of close stellar approaches determination
• Rotation Curve and Mass Distribution in the Galaxy from the Velocities of Objects at Distances up to 200 kpc
• Galactic Rotation Curve and the Effect of Density Waves from Data on Young Objects
• Effect of Different Stellar Galactic Environments on Planetary Discs I: The Solar Neighbourhood and the Birth Cloud of the Sun
• The rate of stellar encounters along a migrating orbit of the Sun
• M dwarf luminosity, radius, and $\alpha$-enrichment from $I$-band spectral features
• The Solar Neighborhood XXXVIII. Results from the CTIO/SMARTS 0.9m: Trigonometric Parallaxes for 151 Nearby M Dwarf Systems
• Impact cratering and the Oort cloud
• Searching for Stars Closely Encountering with the Solar System
• Stars Outside the Hipparcos List Closely Encountering the Solar System

Cited by in corpus (1)

• New stellar encounters discovered in the second Gaia data release