LACEwING: A New Moving Group Analysis Code
Abstract
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, and a kinematic traceback code. LACEwING is a convergence-style algorithm with carefully vetted membership statistics based on a large numerical simulation of the Solar Neighborhood. Given spatial and kinematic information on stars, LACEwING calculates membership probabilities in 13 NYMGs and three open clusters within 100 pc. In addition to describing the inputs, methods, and products of the code, we provide comparisons of LACEwING to other popular kinematic moving group membership identification codes. As a proof of concept, we use LACEwING to reconsider the membership of 930 stellar systems in the Solar Neighborhood (within 100 pc) that have reported measurable lithium equivalent widths. We quantify the evidence in support of a population of young stars not attached to any NYMGs, which is a possible sign of new as-yet-undiscovered groups or of a field population of young stars.
Additional Information
© 2017. The American Astronomical Society. Received 2015 July 11. Accepted 2016 November 15. Published 2017 February 3. A.R.R. acknowledges support from NSF grant AST-131278, NASA ADAP grant NNX12AD97G, and generous support from the Office of the Provost at the College of Staten Island, City University of New York. The authors wish to thank J. Gagné, L. Malo, D. R. Rodriguez, and E. E. Mamajek for helpful suggestions and commentary, G. Schwarz for help with catalog preparation, J. L. McDonald for editorial assistance, and our two referees, J. A. Caballero and an anonymous referee, whose suggestions greatly improved the quality and readability of the paper, the code, and the data products. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This research has made use of the Washington Double Star Catalog maintained at the U.S. Naval Observatory. This research was also made possible through the use of the AAVSO Photometric All-Sky Survey (APASS), funded by the Robert Martin Ayers Sciences Fund. This research has made extensive use of the SIMBAD database and VizieR catalog access tool operated at CDS, Strasbourg, France. The original description of the VizieR service was published in A&AS 143, 23.Attached Files
Published - Riedel_2017_AJ_153_95.pdf
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Additional details
- Eprint ID
- 73997
- Resolver ID
- CaltechAUTHORS:20170203-070353201
- AST-131278
- NSF
- NNX12AD97G
- NASA
- College of Staten Island
- City University of New York
- NASA/JPL/Caltech
- Created
-
2017-02-03Created from EPrint's datestamp field
- Updated
-
2023-06-01Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)