YMGs. I. Young binaries & lithium-rich stars

DOI

Young stars in the solar neighborhood serve as nearby probes of stellar evolution and represent promising targets to directly image self-luminous giant planets. We have carried out an all-sky search for late-type (~K7-M5) stars within 100pc selected primarily on the basis of activity indicators from the Galaxy Evolution Explorer and ROSAT. Approximately 2000 active and potentially young stars are identified, of which we have followed up over 600 with low-resolution optical spectroscopy and over 1000 with diffraction-limited imaging using Robo-AO at the Palomar 1.5m telescope. Strong lithium is present in 58 stars, implying ages spanning ~10-200Myr. Most of these lithium-rich stars are new or previously known members of young moving groups including TWA, {beta}Pic, Tuc-Hor, Carina, Columba, Argus, ABDor, Upper Centaurus Lupus, and Lower Centaurus Crux; the rest appear to be young low-mass stars without connections to established kinematic groups. Over 200 close binaries are identified down to 0.2"-the vast majority of which are new-and will be valuable for dynamical mass measurements of young stars with continued orbit monitoring in the future.

Cone search capability for table J/ApJ/877/60/table2 (Robo-AO observations for 1011 targets)

Cone search capability for table J/ApJ/877/60/table1 (Spectroscopic observations for 634 targets)

Identifier
DOI http://doi.org/10.26093/cds/vizier.18770060
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/877/60
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/877/60
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/877/60
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/877/60
Provenance
Creator Bowler B.P.; Hinkley S.; Ziegler C.; Baranec C.; Gizis J.E.; Law N.M.,Liu M.C.; Shah V.S.; Shkolnik E.L.; Riaz B.; Riddle R.
Publisher CDS
Publication Year 2020
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy