Search Results - "Gagné, Jonathan"
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BANYAN. XIII. A First Look at Nearby Young Associations with Gaia Data Release 2
Published in The Astrophysical journal (01-08-2018)“…In this paper, we examine the nearest 100 pc entries in Data Release 2 of Gaia to identify previously unrecognized candidate members in young associations. We…”
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Addressing Systematics in the Traceback Age of the β Pictoris Moving Group
Published in The Astrophysical journal (01-03-2023)“…Abstract We characterize the impact of several sources of systematic errors on the computation of the traceback age of the β Pictoris moving group ( β PMG). We…”
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BANYAN. II. VERY LOW MASS AND SUBSTELLAR CANDIDATE MEMBERS TO NEARBY, YOUNG KINEMATIC GROUPS WITH PREVIOUSLY KNOWN SIGNS OF YOUTH
Published in The Astrophysical journal (10-03-2014)“…We present Bayesian Analysis for Nearby Young AssociatioNs II (BANYAN II), a modified Bayesian analysis for assessing the membership of later-than-M5 objects…”
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BANYAN. XII. New Members of Nearby Young Associations from GAIA-Tycho Data
Published in The Astrophysical journal (10-06-2018)“…We present a search for stellar members of young associations within 150 pc of the Sun, based on TGAS and an updated version of the BANYAN software to…”
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Volans-Carina: A New 90 Myr Old Stellar Association at 85 pc
Published in The Astrophysical journal (01-10-2018)“…We present a characterization of the new Volans-Carina Association (VCA) of stars near the Galactic plane (b −10°) at a distance of 75-100 pc, previously…”
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BANYAN. XI. The BANYAN Σ Multivariate Bayesian Algorithm to Identify Members of Young Associations with 150 pc
Published in The Astrophysical journal (20-03-2018)“…Abstract BANYAN Σ is a new Bayesian algorithm to identify members of young stellar associations within 150 pc of the Sun. It includes 27 young associations…”
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New Coronae and Stellar Associations Revealed by a Clustering Analysis of the Solar Neighborhood
Published in The Astrophysical journal (01-11-2022)“…Abstract We present the results of a density-based clustering analysis of the 6D XYZ Galactic positions and UVW -space velocities of nearby (≤200 pc) Gaia…”
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BAYESIAN ANALYSIS TO IDENTIFY NEW STAR CANDIDATES IN NEARBY YOUNG STELLAR KINEMATIC GROUPS
Published in The Astrophysical journal (10-01-2013)“…We present a new method based on a Bayesian analysis to identify new members of nearby young kinematic groups. We use this method to find new young low-mass…”
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New and Known Moving Groups and Clusters Identified in a Gaia Comoving Catalog
Published in The Astrophysical journal (10-08-2018)“…We present a reorganization of the Oh et al. wide, comoving catalog of 4555 groups of stars (10,606 individual objects) identified in the Tycho Gaia…”
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BANYAN. V. A SYSTEMATIC ALL-SKY SURVEY FOR NEW VERY LATE-TYPE LOW-MASS STARS AND BROWN DWARFS IN NEARBY YOUNG MOVING GROUPS
Published in The Astrophysical journal (10-01-2015)“…We present the BANYAN All-Sky Survey (BASS) catalog, consisting of 228 new late-type (M4-L6) candidate members of nearby young moving groups (YMGs) with an…”
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Evolution of Flare Activity in GKM Stars Younger Than 300 Myr over Five Years of TESS Observations
Published in The Astronomical journal (01-08-2024)“…Abstract Stellar flares are short-duration (< hours) bursts of radiation associated with surface magnetic reconnection events. Stellar magnetic activity…”
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Let the Great World Spin: Revealing the Stormy, Turbulent Nature of Young Giant Exoplanet Analogs with the Spitzer Space Telescope
Published in The Astrophysical journal (01-01-2022)“…Abstract We present a survey for photometric variability in young, low-mass brown dwarfs with the Spitzer Space Telescope. The 23 objects in our sample show…”
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Evaluating Rotation Periods of M Dwarfs across the Ages
Published in The Astrophysical journal (01-08-2021)“…Abstract In this work we examine M dwarf rotation rates at a range of ages to establish benchmarks for M dwarf gyrochronology. This work includes a sample of…”
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The Oceanus Moving Group: A New 500 Myr Old Host for the Nearest Brown Dwarf
Published in The Astrophysical journal (01-03-2023)“…Abstract We report the discovery of the Oceanus moving group, a ≈500 Myr old group with 50 members and candidate members at distances 2–50 pc from the Sun,…”
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The μ Tau Association: A 60 Myr Old Coeval Group at 150 pc from the Sun
Published in The Astrophysical journal (01-11-2020)“…Abstract We present an analysis of the newly identified μ Tau Association (MUTA) of young stars at ≃150 pc from the Sun that is part of the large Cas-Tau…”
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Revisiting the membership, multiplicity, and age of the Beta Pictoris Moving Group in the Gaia era
Published in Monthly notices of the Royal Astronomical Society (01-03-2024)“…ABSTRACT Determining the precise ages of young (tens to a few hundred Myr) kinematic (‘moving’) groups is important for placing star, protoplanetary disc, and…”
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A Reanalysis of the Fundamental Parameters and Age of TRAPPIST-1
Published in The Astrophysical journal (01-12-2019)“…Abstract We present the distance-calibrated spectral energy distribution (SED) of TRAPPIST-1 using a new medium-resolution ( R ∼ 6000) near-infrared (NIR)…”
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Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS
Published in The Astrophysical journal (01-03-2023)“…Abstract The Tucana–Horologium association (Tuc-Hor) is a 40 Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313…”
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Dynamical Masses of ε Indi B and C: Two Massive Brown Dwarfs at the Edge of the Stellar–substellar Boundary
Published in The Astrophysical journal (20-09-2018)“…Abstract We report individual dynamical masses for the brown dwarfs ε Indi B and C, which have spectral types of T1.5 and T6, respectively, measured from…”
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Characterizing the Cloud Decks of Luhman 16AB with Medium-resolution Spectroscopic Monitoring
Published in The Astrophysical journal (01-11-2017)“…Abstract We present results from a two-night R ∼ 4000 0.9–2.5 μ m spectroscopic monitoring campaign of Luhman 16AB (L7.5 + T0.5). We assess the variability…”
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