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相关论文: Bayesian assessment of moving group membership: im…

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Lee & Song (2018, Paper 1) developed a tool for calculating Bayesian membership probability for nearby young stellar moving groups (BAMG: Bayesian Analysis of Moving Groups). The study presented the importance of careful construction of…

太阳与恒星天体物理 · 物理学 2019-04-16 Jinhee Lee , Inseok Song

We confirm 66 low-mass stellar and brown dwarf systems (K7-M9) plus 19 visual or spectroscopic companions of the beta Pictoris Moving Group (BPMG). Of these, 41 are new discoveries, increasing the known low-mass members by 45%. We also add…

太阳与恒星天体物理 · 物理学 2017-08-02 Evgenya L. Shkolnik , Katelyn N. Allers , Adam L. Kraus , Michael C. Liu , Laura Flagg

We present results from our continuing program to identify new, low-mass, members of the nearby young moving groups (NYMGs) using a proper motion selection algorithm and various observational techniques. We have three goals: 1) To provide…

太阳与恒星天体物理 · 物理学 2015-05-18 Joshua E. Schlieder , Sébastien Lépine , Michal Simon

We present a search for stellar members of young associations within 150 pc of the Sun based on Gaia-Tycho and an updated version of the BANYAN $\Sigma$ software to determine Bayesian membership probabilities that includes Gaia-2MASS…

太阳与恒星天体物理 · 物理学 2018-06-27 Jonathan Gagné , Olivier Roy-Loubier , Jacqueline K. Faherty , René Doyon , Lison Malo

Determining the precise ages of young (tens to a few hundred Myr) kinematic (``moving") groups is important for placing star, protoplanetary disk, and planet observations on an evolutionary timeline. The nearby $\sim$25 Myr-old $\beta$…

太阳与恒星天体物理 · 物理学 2023-12-27 Rena A. Lee , Eric Gaidos , Jennifer van Saders , Gregory A. Feiden , Jonathan Gagné

Gaia EDR3 offers greatly improved kinematics for nearby objects, including members of nearby young stellar moving groups (NYMGs). In this study, we aim to identify low-mass NYMG members (spectral types of M0 to mid-L) in Gaia EDR3. We…

太阳与恒星天体物理 · 物理学 2022-02-16 Jinhee Lee , Inseok Song , Simon J. Murphy

We present Bayesian Analysis for Nearby Young AssociatioNs II (BANYAN II), a modified Bayesian analysis for assessing the membership of later-than-M5 objects to any of several Nearby Young Associations (NYAs). In addition to using kinematic…

太阳与恒星天体物理 · 物理学 2014-03-05 Jonathan Gagné , David Lafrenière , René Doyon , Lison Malo , Étienne Artigau

We describe a procedure to identify stars from nearby moving groups and associations out of catalogs of stars with large proper motions. We show that from the mean motion vector of a known or suspected moving group, one can identify…

天体物理学 · 物理学 2009-11-13 Sebastien Lepine , Michal Simon

We analyze the membership probability of young stars belonging to nearby moving groups with $\textit{Gaia}$ DR2 data. The sample of 1429 stars were identified from 'The Catalog of Suspected Nearby Young Moving Group Stars'. Good-quality…

太阳与恒星天体物理 · 物理学 2020-04-01 K. Ujjwal , Sreeja S. Kartha , Blesson Mathew , P. Manoj , Mayank Narang

We present a new method based on a Bayesian analysis to identify new members of nearby young kinematic groups. The analysis minimally takes into account the position, proper motion, magnitude and color of a star, but other observables can…

太阳与恒星天体物理 · 物理学 2015-06-11 Lison Malo , René Doyon , David Lafrenière , Étienne Artigau , Jonathan Gagné , Frédérique Baron , Adric Riedel

Accurate age estimation of nearby young moving groups (NYMGs) is important as they serve as crucial testbeds in various fields of astrophysics, including formation and evolution of stars, planets, as well as loose stellar associations. The…

太阳与恒星天体物理 · 物理学 2024-04-12 Jinhee Lee , Inseok Song

Aims. We look for common proper motion companions to stars of the nearby young beta Pictoris moving group. Methods. First, we compiled a list of 185 beta Pictoris members and candidate members from 35 representative works. Next, we used the…

太阳与恒星天体物理 · 物理学 2015-11-04 F. J. Alonso-Floriano , J. A. Caballero , M. Cortes-Contreras , E. Solano , D. Montes

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 expected false-positive rate of ~ 13%. This sample includes 79 new candidate young…

太阳与恒星天体物理 · 物理学 2015-06-23 Jonathan Gagné , David Lafrenière , René Doyon , Lison Malo , Étienne Artigau

Based on high-resolution spectra obtained with PHOENIX at Gemini-South, CRIRES at VLT-UT1, and ESPaDOnS at CFHT, we present new measurements of the radial and projected rotational velocities of 219 low-mass stars. The target likely…

太阳与恒星天体物理 · 物理学 2015-06-18 Lison Malo , Étienne Artigau , René Doyon , David Lafrenière , Loïc Albert , Jonathan Gagné

BANYAN $\Sigma$ is a new Bayesian algorithm to identify members of young stellar associations within 150 pc of the Sun. It includes 27 young associations with ages in the range ~1-800 Myr, modelled with multivariate Gaussians in…

We describe our all-sky survey for >M4 candidate members to nearby, young associations from the 2MASS and WISE catalogs using bayesian inference. We report the first results, including 38 highly probable candidates showing spectroscopic…

太阳与恒星天体物理 · 物理学 2013-07-05 Jonathan Gagné , David Lafrenière , René Doyon , Lison Malo , Jacqueline Faherty , Étienne Artigau

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…

In this paper we examine the nearest 100 pc entries in the data release 2 of Gaia to identify previously unrecognized candidate members in young associations. We analyze 695 952 stars with the BANYAN {\Sigma} Bayesian classification…

太阳与恒星天体物理 · 物理学 2018-08-08 Jonathan Gagné , Jacqueline K. Faherty

We present a new nearby young moving group (NYMG) kinematic membership analysis code, LocAting Constituent mEmbers In Nearby Groups (LACEwING), a new Catalog of Suspected Nearby Young Stars, a new list of bona fide members of moving groups,…

太阳与恒星天体物理 · 物理学 2017-02-22 Adric R. Riedel , Sarah C. Blunt , Erini L. Lambrides , Emily L. Rice , Kelle L. Cruz , Jacqueline K. Faherty

In the last decade many kinematic groups of young stars (<100 Myr) were discovered in the solar neighbourhood. Since the most interesting period of planet formation overlaps with the age of these groups, their well dated members are…

太阳与恒星天体物理 · 物理学 2013-09-09 A. Moór , Gy. M. Szabó , L. L. Kiss , Cs. Kiss , P. Ábrahám , J. Szulágyi , Á. Kóspál , T. Szalai
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