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dc.contributor.authorKounkel, M.
dc.contributor.authorCovey, K.R.
dc.contributor.authorStassun, K.G.
dc.contributor.authorPrice-Whelan, A.M.
dc.contributor.authorHoltzman, J.
dc.contributor.authorChojnowski, D.
dc.contributor.authorLonga-Peña, P.
dc.contributor.authorRomán-Zúñiga, C.G.
dc.contributor.authorHernandez, J.
dc.contributor.authorSerna, J.
dc.contributor.authorBadenes, C.
dc.contributor.authorDe Lee, N.
dc.contributor.authorMajewski, S.
dc.contributor.authorStringfellow, G.S.
dc.contributor.authorKratter, K.M.
dc.contributor.authorMoe, M.
dc.contributor.authorFrinchaboy, P.M.
dc.contributor.authorBeaton, R.L.
dc.contributor.authorFernández-Trincado, J.G.
dc.contributor.authorMahadevan, S.
dc.contributor.authorMinniti, D.
dc.contributor.authorBeers, T.C.
dc.contributor.authorSchneider, D.P.
dc.contributor.authorBarba, R.
dc.contributor.authorBrownstein, J.R.
dc.contributor.authorGarcía-Hernández, D.A.
dc.contributor.authorPan, K.
dc.contributor.authorBizyaev, D.
dc.date.accessioned2021-11-29T20:24:30Z
dc.date.available2021-11-29T20:24:30Z
dc.date.issued2021
dc.identifier.citationKounkel, M., Covey, K. R., Stassun, K. G., Price-Whelan, A. M., Holtzman, J., Chojnowski, D., Longa-Peña, P., Román-Zúñiga, C. G., Hernandez, J., Serna, J., Badenes, C., De Lee, N., Majewski, S., Stringfellow, G. S., Kratter, K. M., Moe, M., Frinchaboy, P. M., Beaton, R. L., Fernández-Trincado, J. G., … Bizyaev, D. (2021). Double-lined Spectroscopic Binaries in the APOGEE DR16 and DR17 Data. Astronomical Journal.
dc.identifier.issn0004-6256
dc.identifier.doi10.3847/1538-3881/ac1798
dc.identifier.urihttp://hdl.handle.net/10150/662366
dc.description.abstractAPOGEE spectra offer ?1 km s-1 precision in the measurement of stellar radial velocities. This holds even when multiple stars are captured in the same spectrum, as happens most commonly with double-lined spectroscopic binaries (SB2s), although random line-of-sight alignments of unrelated stars can also occur. We develop a code that autonomously identifies SB2s and higher order multiples in the APOGEE spectra, resulting in 7273 candidate SB2s, 813 SB3s, and 19 SB4s. We estimate the mass ratios of binaries, and for a subset of these systems with a sufficient number of measurements we perform a complete orbital fit, confirming that most systems with periods of <10 days have circularized. Overall, we find an SB2 fraction (F SB2) ~ 3% among main-sequence dwarfs, and that there is not a significant trend in F SB2 with temperature of a star. We are also able to recover a higher F SB2 in sources with lower metallicity, however there are some observational biases. We also examine light curves from TESS to determine which of these spectroscopic binaries are also eclipsing. Such systems, particularly those that are also pre- and post-main sequence, are good candidates for a follow-up analysis to determine their masses and temperatures.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.rightsCopyright © 2021. The American Astronomical Society. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectmachine-readable tables
dc.titleDouble-lined Spectroscopic Binaries in the APOGEE DR16 and DR17 Data
dc.typeArticle
dc.typetext
dc.contributor.departmentSteward Observatory, University of Arizona
dc.identifier.journalAstronomical Journal
dc.description.noteImmediate access
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleAstronomical Journal
refterms.dateFOA2021-11-29T20:24:30Z


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