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We present a kinematic study of a large sample of chromospherically active binaries (CAB) in order to determine their membership to representative young disk stellar kinematic groups: the Local Association (Pleiades moving group, 20 - 150…

Astrophysics · Physics 2016-08-30 D. Montes , M. J. Fernandez-Figueroa , E. De Castro , M. Cornide , A. Latorre

We have compiled a catalog of late-type stars (F5-M) member of representative young disk stellar kinematic groups: the Local Association (Pleiades moving group, 20 - 150 Myr), Ursa Mayor group (Sirius supercluster, 300 Myr), and Hyades…

Astrophysics · Physics 2007-05-23 D. Montes , A. Latorre , M. J. Fernandez-Figueroa

We present a detailed analysis of 10 proposed F and G members of the nearby, young moving group AB Doradus (ABD). Our sample was obtained using the 2.7m telescope at the McDonald Observatory with the coude echelle spectrograph, achieving R…

Solar and Stellar Astrophysics · Physics 2014-09-24 Kyle McCarthy , Ronald Wilhelm

We present the results of a density-based clustering analysis of the 6-dimensional XYZ Galactic positions and UVW space velocities of nearby ($\leq$ 200 pc) Gaia EDR3 stars with radial velocities using HDBSCAN, in opposition to previous…

Solar and Stellar Astrophysics · Physics 2022-11-16 Leslie Moranta , Jonathan Gagné , Dominic Couture , Jacqueline K. Faherty

We present a kinematically-unbiased search to identify young, nearby low-mass members of kinematic moving groups (MGs). Objects with both rotation periods shorter than 5 days in the SuperWASP All-Sky Survey and X-ray counterparts in the…

Solar and Stellar Astrophysics · Physics 2015-06-11 A. S. Binks , R. D. Jeffries , P. F. L. Maxted

Young brown dwarfs share many properties with directly imaged giant extrasolar planets. They therefore provide unique laboratories for investigating the full range of temperature and mass encompasses by the growing collection of planets…

Solar and Stellar Astrophysics · Physics 2017-04-12 Adam C. Schneider , James Windsor , Michael C. Cushing , J. Davy Kirkpatrick

We present a spectroscopic and kinematic analysis of 79 nearby M dwarfs in 77 systems. All are low-proper-motion southern hemisphere objects and were identified in a nearby star survey with a demonstrated sensitivity to young stars. Using…

Solar and Stellar Astrophysics · Physics 2017-05-24 Adric R. Riedel , Munazza K. Alam , Emily L. Rice , Kelle L. Cruz , Todd J. Henry

The kinematic plane of stars near the Sun has proven an indispensable tool for untangling the complexities of the structure of our Milky Way (MW). With ever improving data, numerous kinematic "moving groups" of stars have been better…

Astrophysics of Galaxies · Physics 2023-01-18 Scott Lucchini , Emil Pellett , Elena D'Onghia , J. Alfonso L. Aguerri

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,…

Solar and Stellar Astrophysics · Physics 2017-02-22 Adric R. Riedel , Sarah C. Blunt , Erini L. Lambrides , Emily L. Rice , Kelle L. Cruz , Jacqueline K. Faherty

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…

Solar and Stellar Astrophysics · Physics 2015-11-04 F. J. Alonso-Floriano , J. A. Caballero , M. Cortes-Contreras , E. Solano , D. Montes

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…

Solar and Stellar Astrophysics · Physics 2017-08-02 Evgenya L. Shkolnik , Katelyn N. Allers , Adam L. Kraus , Michael C. Liu , Laura Flagg

In this work, we present a systematic search for stellar groups in the Taurus field by applying DBSCAN algorithm to the data from Gaia DR2. We find 22 groups, consisting of 8 young groups (Groups 1-8) at ages of 2-4Myr and distances of…

Solar and Stellar Astrophysics · Physics 2021-05-26 Jiaming Liu , Min Fang , Hao Tian , Chao Liu , Chengqun Yang , Xiangxiang Xue

We report the discovery of the Oceanus moving group, a $\approx$ 500 Myr-old group with 50 members and candidate members at distances 2-50 pc from the Sun using an unsupervised clustering analysis of nearby stars with Gaia DR3 data. This…

I have used the third data release of the Gaia mission to improve the reliability and completeness of membership samples in the beta Pic moving group (BPMG) and other nearby associations with ages of 20-50 Myr (Sco Body, Carina, Columba,…

Astrophysics of Galaxies · Physics 2024-09-11 K. L. Luhman

This is the first paper of a series aimed at studying the properties of late-type stars members of young stellar kinematic groups. We concentrate our study on classical young moving groups as: Local Association (Pleiades moving group, 20 -…

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…

Solar and Stellar Astrophysics · Physics 2015-06-23 Jonathan Gagné , David Lafrenière , René Doyon , Lison Malo , Étienne Artigau

We present a new procedure for the identification of moving groups. It is a combination of two independent member selection methods. One is a modern implementation of a classical convergent point method for proper motion data. The other…

Astrophysics · Physics 2007-05-23 J. H. J. de Bruijne , R. Hoogerwerf , A. G. A. Brown , L. A. Aguilar , P. T. de Zeeuw

There is long tradition extending more than a century on the identification of moving groups in the Solar neighborhood. However, with the advent of large kinematic surveys, and especially of the upcoming Gaia data releases there is a need…

Astrophysics of Galaxies · Physics 2018-04-26 Helmer H. Koppelman , Titania Virginiflosia , Lorenzo Posti , Jovan Veljanoski , Amina Helmi

We have conducted a kinematic study of 165 young M dwarfs with ages of <300 Myr. Our sample is composed of stars and brown dwarfs with spectral types ranging from K7 to L0, detected by ROSAT and with photometric distances of <25 pc assuming…

We present a self-consistent, absolute isochronal age scale for young (< 200 Myr), nearby (< 100 pc) moving groups in the solar neighbourhood based on homogeneous fitting of semi-empirical pre-main-sequence model isochrones using the tau^2…

Solar and Stellar Astrophysics · Physics 2015-09-30 Cameron P. M. Bell , Eric E. Mamajek , Tim Naylor