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• W3100392724 endingPage "66" @default.
• W3100392724 startingPage "66" @default.
• W3100392724 abstract "We present a catalog of 99,203 wide binary systems, initially identified as common proper motion (CPM) pairs from a subset of ~5.2 million stars with proper motions $mu > 40$ mas/year, selected from Gaia data release 2 (DR2) and the SUPERBLINK high proper motion catalog. CPM pairs are found by searching for pairs of stars with angular separations $< 1$ degree and proper motion differences $Deltamu < 40$ mas/year. A Bayesian analysis is then applied in two steps. In a first pass, we use proper motion differences and angular separations to distinguish between binaries and chance alignments. In a second pass, we use parallax data from Gaia DR2 to refine our Bayesian probability estimates. We present a table of 119,390 pairs which went through the full analysis, 99,203 of which have probabilities $>95%$ of being real binaries. Of those 99,203 high probability pairs, we estimate that only about 364 pairs are most likely to be false positives. In addition, we identify 57,506 pairs which have probabilities $>10%$ from the first pass but have high parallax errors and therefore were not vetted in the second pass. We examine the projected physical separation distribution of our highest probability pairs and note that the distribution is a simple exponential tail and shows no evidence of being bi-modal. Among pairs with lower probability, wide binaries are detected at larger separations ($>10^{4-5}$ AU) consistent with the very wide population suggested in previous studies, however our analysis suggests that these do not represent a distinct population. We examine the HR diagram of this set of high probability wide binaries and find evidence for 980 over-luminous components among 2,227 K+K wide binaries; assuming these represent unresolved sub-systems, we determine that the higher order multiplicity fraction for K+K wide systems is at least 39.6%." @default.
• W3100392724 created "2020-11-23" @default.
• W3100392724 creator A5057735505 @default.
• W3100392724 creator A5067642476 @default.
• W3100392724 date "2020-04-07" @default.
• W3100392724 modified "2023-10-15" @default.
• W3100392724 title "The SUPERWIDE Catalog: A Catalog of 99,203 Wide Binaries Found in<i>Gaia</i>and Supplemented by the SUPERBLINK High Proper Motion Catalog" @default.
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• W3100392724 doi "https://doi.org/10.3847/1538-4365/ab79a6" @default.
• W3100392724 hasPublicationYear "2020" @default.
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