J/ApJS/247/66 SUPERWIDE: wide binaries in Gaia & SUPERBLINK (Hartman+, 2020)
The SUPERWIDE catalog: a catalog of 99203 wide binaries found in Gaia and
supplemented by the SUPERBLINK high proper motion catalog.
Hartman Z.D., Lepine S.
<Astrophys. J. Suppl. Ser., 247, 66 (2020)>
=2020ApJS..247...66H 2020ApJS..247...66H
ADC_Keywords: Stars, double and multiple; Proper motions;
Parallaxes, trigonometric; Radial velocities
Keywords: Binary stars ; Wide binary stars ; Low mass stars
Abstract:
We present a catalog of 99203 wide binary systems, initially
identified as common proper motion (CPM) pairs from a subset of
∼5.2million stars with proper motions µ>40mas/yr, selected from
Gaia data release 2 (DR2, I/345) and the SUPERBLINK high proper motion
catalog (Lepine 2005, J/AJ/130/1247 and Lepine & Gaidos
2011, J/AJ/142/138). CPM pairs are found by searching for pairs of
stars with angular separations <1° and proper motion differences
Δµ<40mas/yr. A Bayesian analysis is then applied in two
steps. In a first pass, we use proper motion differences and angular
separations to distinguish between real 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
119390 pairs which went through the full analysis, 99203 of which have
probabilities >95% of being real wide binaries. Of those 99203
high-probability pairs, we estimate that only about 364 pairs are most
likely to be false positives. In addition, we identify 57506 pairs
that have probabilities greater than 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 bimodal. Among pairs
with lower probability, wide binaries are detected at larger
separations (>104-105au), consistent with the very wide population
suggested in previous studies; however, our analysis suggests that
these do not represent a distinct population, but instead represent
either the exponential tail of the "normal" wide binary distribution
or are simply chance alignments of unrelated field stars. We examine
the Hertzsprung-Russell diagram of this set of high-probability wide
binaries and find evidence for 980 overluminous components among 2227
K+K wide binaries; assuming these represent unresolved subsystems, we
determine that the higher-order multiplicity fraction for K+K wide
systems is at least 39.6%.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 106 119390 Data on primary stars in pairs that have
probabilities greater than 10% from the first
pass probabilities and have parallax errors less
than 10% of the parallax
table5.dat 106 119390 Data on secondary stars in pairs that have
probabilities greater than 10% from the first
pass probabilities and have parallax errors less
than 10% of the parallax
table6.dat 63 119390 Data on binary pairs that have probabilities
greater than 10% from the first pass probabilities
and have parallax errors less than 10% of
the parallax
table7.dat 95 57506 Data on primary stars in pairs that have
probabilities greater than 10% from the first
pass probabilities but have parallax errors >10%
of the parallax itself
table8.dat 95 57506 Data on secondary stars in pairs that have
probabilities greater than 10% from the first
pass probabilities but have parallax errors >10%
of the parallax itself
table9.dat 49 57506 Data on unvetted pairs
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See also:
I/298 : LSPM-North Catalog (Lepine+ 2005)
III/279 : RAVE 5th data release (Kunder+, 2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/AJ/124/1190 : Northern high proper motion stars in DSS (Lepine+, 2002)
J/AJ/125/1598 : New high PM stars in the northern sky (Lepine+, 2003)
J/AJ/130/1247 : High proper motion stars in the DSS. III (Lepine+, 2005)
J/AJ/130/1680 : LSPM-North proper-motion nearby stars (Lepine+, 2005)
J/AJ/133/889 : Faint companions of Hipparcos stars (Lepine+, 2007)
J/AJ/135/2177 : High proper motion stars in the DSS. IV. (Lepine, 2008)
J/AJ/139/2566 : SLoWPoKES catalog (Dhital+, 2010)
J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)
J/other/JDSO/6.30 : New Wide Common Proper Motion Binaries (Benavides+, 2010)
J/AJ/142/138 : All-sky catalog of bright M dwarfs (Lepine+, 2011)
J/ApJS/192/2 : A Bayesian search for binaries in Hipparcos (Shaya+, 2011)
J/AJ/144/102 : Wide companions to Hipparcos stars (Tokovinin+, 2012)
J/AJ/145/52 : Late K & M dwarf abundances in binary systems (Mann+, 2013)
J/AJ/147/20 : Spectroscopy of 447 nearby M dwarfs (Newton+, 2014)
J/AJ/147/86 : From binaries to multiples. I. FG-67 stars (Tokovinin, 2014)
J/AJ/150/57 : SLoWPoKES-II catalog (Dhital+, 2015)
J/MNRAS/455/4212 : Pan-STARRS 1: occurrence in the Kepler field (Dacon+, 2016)
J/MNRAS/472/675 : Wide binaries in Tycho-Gaia: search method (Andrews+, 2017)
J/ApJ/835/75 : Common proper motion stars in the Kepler field (Janes, 2017)
J/A+A/599/A14 : Taurus ultra-wide pairs (Joncour+, 2017)
J/AJ/153/259 : The GAMBLES extension of the SLoWPoKES cat. (Oelkers+, 2017)
J/AJ/153/257 : Comoving stars in Gaia DR1 (Oh+, 2017)
J/ApJ/851/26 : Teff, metallicity & Ti of M dwarfs (Veyette+, 2017)
J/AJ/156/259 : Robo-AO detected close binaries in Gaia DR2 (Ziegler+, 2018)
J/AJ/157/78 : Gaia double & multiple star systems (Jimenez-Esteban+, 2019)
J/AJ/157/216 : Multiplicity of M dwarfs within 25pc (Winters+, 2019)
Byte-by-byte Description of file: table[45].dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [SWB]
4- 9 I6 --- Seq [1/119390] Running sequence number
11- 29 I19 --- Gaia ?=- Gaia DR2 identifier (1)
31- 39 F9.5 deg RAdeg Barycentric Right Ascension (ICRS) at Ep=2015.5
41- 49 F9.5 deg DEdeg Barycentric Declination (ICRS) at Ep=2015.5
51- 59 F9.3 mas/yr pmRA [-2251/1802] Gaia DR2 proper motion along RA
61- 69 F9.3 mas/yr pmDE [-3543/10363] Gaia DR2 proper motion along DE
71- 80 F10.4 mas plx [0.4/637.2] Gaia DR2 parallax
82- 88 F7.4 mag Gmag [0.08/21.3]?=99.9 Gaia DR2 G band magnitude
90- 97 F8.4 mag BP-RP [-93/91.5] Gaia DR2 (Blue-Red) passband color
99-106 F8.2 km/s RV [-767/569]?=99999.99 Gaia DR2 spectroscopic
radial velocity in the solar barycentric
reference frame
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Note (1): If the component is from SUPERBLINK, the Gaia ID is set to "---".
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [SWB]
4- 9 I6 --- Seq [1/119390] Running sequence number
11- 20 F10.5 arcsec ASep [2/3598] Angular separation
22- 31 F10.2 AU PSep [30/2764540] Projected physical separation
33- 39 F7.3 mag DeltaG [-91.4/0] Primary/secondary G band magnitude
difference
41- 48 F8.2 km/s DeltaRV [-555/711]?=99999.99 Primary/secondary radial
velocity difference
50- 56 F7.3 % First [10/100] First run Bayesian probability
58- 63 F6.3 % Second [0/100] Second run Bayesian probability
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Byte-by-byte Description of file: table[78].dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia ?=- Gaia DR2 identifier (1)
21- 29 F9.5 deg RAdeg Barycentric Right Ascension (ICRS) at Ep=2015.5
31- 39 F9.5 deg DEdeg Barycentric Declination (ICRS) at Ep=2015.5
41- 48 F8.3 mas/yr pmRA [-904/1019] Gaia DR2 proper motion along RA
50- 58 F9.3 mas/yr pmDE [-1196/510] Gaia DR2 proper motion along DE
60- 69 F10.4 mas plx [-597/537]?=99999.99 Gaia DR2 parallax
71- 77 F7.4 mag Gmag [2.1/21.9]?=99.9 Gaia DR2 G band magnitude
79- 86 F8.4 mag BP-RP [-87.3/90] Gaia DR2 (Blue-Red) passband color
88- 95 F8.2 km/s RV [-340/554]?=99999.99 Gaia DR2 spectroscopic
radial velocity in the solar barycentric
reference frame
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Note (1): If the component is from SUPERBLINK, Gaia id is set to "---".
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 10 F10.5 arcsec ASep [2/3596] Angular separation
12- 24 F13.2 AU PSep [-34246873/1432811050] Projected physical
separation
26- 32 F7.3 mag DeltaG [-91.3/1.5] Primary/secondary G band magnitude
difference
34- 41 F8.2 km/s DeltaRV [-270/393]?=99999.99 Primary/secondary
radial velocity difference
43- 49 F7.3 % First [10/100] First run Bayesian probability
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 14-Sep-2020