Binaries among low-mass stars in nearby young moving groups

Abstract

The solar galactic neighbourhood contains a number of young co-moving associations of stars (so-called `young moving groups') with ages of ~10--150 Myr, which are prime targets for a range of scientific studies, including direct imaging planet searches. The late-type stellar population of such groups still remain in their pre-main sequence phase, and are thus well suited for purposes such as isochronal dating. Close binaries are particularly useful in this regard, since they allow for a model-independent dynamical mass determination. Here we present a dedicated effort to identify new close binaries in nearby young moving groups, through high-resolution imaging with the AstraLux Sur Lucky Imaging camera. We surveyed 181 targets, resulting in the detection of 61 companions or candidates, of which 38 are new discoveries. An interesting example of such a case is 2MASS J00302572-6236015 AB, which is a high-probability member of the Tucana-Horologium moving group, and has an estimated orbital period of less than 10 years. Among the previously known objects is a serendipitous detection of the deuterium burning boundary circumbinary companion 2MASS J01033563-5515561 (AB)b in the z'-band, thereby extending the spectral coverage for this object down to near-visible wavelengths.

arXiv comment12 pages, 3 figures, accepted for publication in A&A

References in corpus (40)

• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• Direct Imaging of Multiple Planets Orbiting the Star HR 8799
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• A giant planet imaged in the disk of the young star Beta Pictoris
• Optical Images of an Exosolar Planet 25 Light Years from Earth
• A self-consistent, absolute isochronal age scale for young moving groups in the solar neighbourhood
• Bayesian analysis to identify new star candidates in nearby young stellar kinematic groups
• LkCa 15: A Young Exoplanet Caught at Formation?
• Accreting Protoplanets in the LkCa 15 Transition Disk
• BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups With Previously Known Signs of Youth
• Direct Imaging of a Cold Jovian Exoplanet in Orbit around the Sun-like Star GJ 504
• The AstraLux Large M-dwarf Multiplicity Survey
• Planets Around Low-Mass Stars (PALMS). IV. The Outer Architecture of M Dwarf Planetary Systems
• The Gemini NICI Planet-Finding Campaign: The Frequency of Planets around Young Moving Group Stars
• A Stellar Census of the Tucana-Horologium Moving Group
• Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Planets, Including a Planet Receiving Earth-like Insolation
• BANYAN. III. Radial velocity, Rotation and X-ray emission of low-mass star candidates in nearby young kinematic groups
• A New Association of Post-T Tauri Stars Near The Sun
• Direct imaging discovery of 12-14 Jupiter mass object orbiting a young binary system of very low-mass stars
• Lucky Imaging survey for southern M dwarf binaries
• Cool Young Stars in the Northern Hemisphere: Beta Pictoris and AB Doradus Moving Group Candidates
• BANYAN. V. A Systematic All-Sky Survey for New Very Late-Type Low-Mass Stars and Brown Dwarfs in Nearby Young Moving Groups
• The Moving Group Targets of the SEEDS High-Contrast Imaging Survey of Exoplanets and Disks: Results and Observations from the First Three Years
• Hubble Space Telescope Evidence for an Intermediate-Mass Black Hole in the Globular Cluster M15: I. STIS Spectroscopy and WFPC2 Photometry
• Infrared Non-detection of Fomalhaut b -- Implications for the Planet Interpretation
• Beta Pictoris and AB Doradus Moving Groups: Likely New Low-Mass Members
• Deficit of wide binaries in the eta Chamaeleontis young cluster
• Resolving the planet-hosting inner regions of the LkCa 15 disk
• The AstraLux Multiplicity Survey: Extension to Late M-dwarfs
• SPOTS: The Search for Planets Orbiting Two Stars: II. First constraints on the frequency of sub-stellar companions on wide circumbinary orbits
• Dynamical Masses of Young M Dwarfs: Masses and Orbital Parameters of GJ 3305 AB, the Wide Binary Companion to the Imaged Exoplanet Host 51 Eri
• Search for associations containing young stars (SACY) VII. New stellar and substellar candidate members in the young associations
• Reaching the boundary between stellar kinematic groups and very wide binaries. III. Sixteen new stars and eight new wide systems in the beta Pictoris moving group
• Improved age constraints for the AB Dor quadruple system - The binary nature of AB Dor B
• Search for associations containing young stars (SACY). VI. Is multiplicity universal? Stellar multiplicity in the range 3-1000 au from adaptive-optics observations
• Orbital Monitoring of the AstraLux Large M-dwarf Multiplicity Sample
• Two Small Temperate Planets Transiting Nearby M Dwarfs in K2 Campaigns 0 and 1
• GSC 07396-00759 = V4046 Sgr C[D]: a Wide-separation Companion to the Close T Tauri Binary System V4046 Sgr AB
• Discovery of close companions to the nearby young stars HD 199143 and HD 358623
• Orbits and masses in the young triple system TWA 5

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• CARMENES input catalogue of M dwarfs V. Luminosities, colours, and spectral energy distributions
• Dynamical traceback age of the $\beta$ Pictoris moving group
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• HAZMAT III: The UV Evolution of Mid- to Late-M Stars with GALEX
• Search for associations containing young stars (SACY) VIII. An updated census of spectroscopic binary systems showing hints of non-universal multiplicity among these associations
• Strong H$\alpha$ emission and signs of accretion in a circumbinary planetary mass companion from MUSE
• The Elusive Majority of Young Moving Groups. I. Young Binaries and Lithium-Rich Stars in the Solar Neighborhood
• Lithium depletion boundary, stellar associations, and Gaia
• New disk discovered with VLT/SPHERE around the M star GSC 07396-00759
• SPOTS: The Search for Planets Orbiting Two Stars. III. Complete Sample and Statistical Analysis
• Spectroscopic orbits of nearby stars
• HATS-54b-HATS-58Ab: five new transiting hot Jupiters including one with a possible temperate companion
• The Multiplicity of M-Dwarfs in Young Moving Groups
• New binaries from the SHINE survey
• Dynamical masses of M-dwarf binaries in young moving groups: I - The case of TWA 22 and GJ 2060
• HATS-43b, HATS-44b, HATS-45b, and HATS-46b: Four Short Period Transiting Giant Planets in the Neptune-Jupiter Mass Range
• HATS-39b, HATS-40b, HATS-41b, and HATS-42b: Three Inflated Hot Jupiters and a Super-Jupiter Transiting F Stars
• The discrepancy between dynamical and theoretical mass in the triplet-system 2MASS J10364483+1521394
• HATS-50b through HATS-53b: four transiting hot Jupiters orbiting G-type stars discovered by the HATSouth survey
• The binary system of the spinning-top Be star Achernar
• Examining the Rotation Period Distribution of the 40 Myr Tucana-Horologium Association with TESS
• Detecting New Visual Binaries in Gaia DR3 with Gaia and 2MASS Photometry I. New Candidate Binaries Within 200 pc of the Sun
• The Puzzling Story of Flare Inactive Ultra Fast Rotating M dwarfs. I. Exploring their Magnetic Fields
• Updated orbital monitoring and dynamical masses for nearby M-dwarf binaries
• Radial velocity survey of spatially resolved young, low-mass binaries
• HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet Around a Sun-Like Star
• Dynamical masses of M-dwarf binaries in young moving groups: II - Toward empirical mass-luminosity isochrones
• A young spectroscopic binary in a quintuple system part of the Local Association