J/AJ/162/260 Mass ratios of 248 long-period binary stars (Makarov+, 2021)
Astrometric mass ratios of 248 long-period binary stars resolved in Hipparcos
and Gaia EDR3.
Makarov V.V., Fabricius C.
<Astron. J., 162, 260-260 (2021)>
=2021AJ....162..260M 2021AJ....162..260M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple; Stars, masses; Optical;
Parallaxes, trigonometric; Positional data
Keywords: Mass ratio; Astrometric binary stars; Optical double stars; Astrometry
Abstract:
Using the absolute astrometric positions and proper motions for common
stars in the Hipparcos and Gaia catalogs separated by 24.75yr in the
mean epoch, we compute mass ratios for long-period, resolved binary
systems without any astrophysical assumptions or dependencies, except
the presence of inner binary subsystems that may perturb the observed
mean proper motions. The mean epoch positions of binary companions
from the Hipparcos Double and Multiple System Annex are used as the
first epoch. The mean positions and proper motions of carefully
cross-matched counterparts in Gaia EDR3 comprise the second epoch
data. Selecting only results with sufficiently high signal-to-noise
ratio and discarding numerous optical pairs, we construct a catalog of
248 binary systems, which is published online. Several cases with
unusual properties or results are also discussed.
Description:
Using commonly accessible information from the ESA's Hipparcos and
Gaia space missions, we were able to process the entire cross-matched
sample of resolved double stars and selected 248 high-probability
binary systems with statistically significant estimates of mass ratio.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 363 248 Star catalog of resolved binaries with
astrometric mass ratios from Hipparcos & Gaia
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/276 : Tycho Double Star Catalogue (TDSC) (Fabricius+ 2002)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
J/ApJS/224/19 : The KepVIM catalog (Makarov+, 2016)
J/MNRAS/471/770 : Parameters & IR excesses of Gaia DR1 stars (McDonald+, 2017)
J/AJ/157/136 : RVs of RGs with suspected massive companions (Makarov+, 2019)
J/AJ/160/268 : Infrared photometry of binaries in Orion OB1 (Tokovinin+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- PHip Primary Hipparcos identifier
8 A1 --- PHipCom Primary Hipparcos component identifier
10- 15 I6 --- SHip Secondary Hipparcos identifier
17 A1 --- SHipCom Secondary Hipparcos component identifier
19- 37 I19 --- Gaia Primary Gaia EDR3 identifier
39- 50 F12.8 deg RAdeg [1/360] Primary Gaia EDR3 Right Ascension
(J2016)
52- 63 F12.8 deg DEdeg [-85/76] Primary Gaia EDR3 Declination (J2016)
65- 71 F7.3 mas plx [3.32/284] Primary Gaia EDR3 parallax
73- 81 F9.3 mas/yr pmRA [-1312/1749] Primary Gaia EDR3 proper motion
along RA
83- 91 F9.3 mas/yr pmDE [-1163/1793] Primary Gaia EDR3 proper motion
along DE
93- 97 F5.3 arcsec e_RAdeg [0.009/0.6] Uncertainty in PRAdeg
99-103 F5.3 arcsec e_DEdeg [0.008/0.7] Uncertainty in PDEdeg
105-109 F5.3 mas e_plx [0.01/0.8] Uncertainty in Pplx
111-115 F5.3 mas/yr e_pmRA [0.009/0.7] Uncertainty in PpmRA
117-121 F5.3 mas/yr e_pmDE [0.01/0.9] Uncertainty in PpmDE
123-132 F10.3 --- chi2 [298/789599] Primary astrometric χ2
134-139 F6.3 --- RUWE [0.66/18.7] Primary RUWE parameter
141-146 F6.3 mag Gmag [3.32/11.7] Primary Gaia EDR3 G band apparent
magnitude
148-153 F6.3 mag Gbpmag [3.09/12.4] Primary Gaia EDR3 Blue passband
apparent magnitude
155-160 F6.3 mag Grpmag [2.84/10.2] Primary Gaia EDR3 Red passband
apparent magnitude
162-180 I19 --- Gaia2 Secondary Gaia EDR3 identifier
182-193 F12.8 deg RAdeg2 [1/360] Secondary Gaia EDR3 Right Ascension
(J2016)
195-206 F12.8 deg DEdeg2 [-85/76] Secondary Gaia EDR3 Declination
(J2016)
208-214 F7.3 mas plx2 [3.97/284] Secondary Gaia EDR3 parallax
216-224 F9.3 mas/yr pmRA2 [-1401/1704] Secondar Gaia EDR3 proper motion
along RA
226-234 F9.3 mas/yr pmDE2 [-1167/1863] Secondar Gaia EDR3 proper motion
along DE
236-240 F5.3 mas e_RAdeg2 [0.008/0.5] Uncertainty in SRAdeg
242-246 F5.3 mas e_DEdeg2 [0.009/0.6] Uncertainty in SDEdeg
248-252 F5.3 mas e_plx2 [0.01/0.8] Uncertainty in Splx
254-258 F5.3 mas/yr e_pmRA2 [0.009/0.7] Uncertainty in SpmRA
260-264 F5.3 mas/yr e_pmDE2 [0.01/0.8] Uncertainty in SpmDE
266-275 F10.3 --- chi22 [263/179164] Secondary astrometric χ2
277-282 F6.3 --- RUWE2 [0.69/18.8] Secondary RUWE parameter
284-290 F7.3 mag Gmag2 [3.98/12.1]? Secondary Gaia EDR3 G band
apparent magnitude
292-298 F7.3 mag Gbpmag2 [3.32/12.8]? Secondary Gaia EDR3 Blue passband
apparent magnitude
300-306 F7.3 mag Grpmag2 [3.4/10.3]? Secondary Gaia EDR3 Red passband
apparent magnitude
308-312 F5.3 --- q [0.02/9.13] Ratio; secondary/primary masses
314-317 F4.1 deg eta [0/49.5] Alignment angle
319-323 F5.3 --- e_q [0.005/3] Lower bound error in q
325-329 F5.3 --- E_q [0.005/3] Upper bound error in q
331-335 F5.3 --- qmean [0.02/8.37] Median q from MC simulations
337-345 F9.3 --- SNR [10.8/53133] Signal-to-Noise ratio
347-355 F9.3 mas Sep [408/13327] Gaia EDR3 separation (J2016)
357-361 F5.1 deg PA [1.1/360] Gaia EDR3 position angle (J2016)
363 I1 --- Q [1/3] Quality flag (1)
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Note (1): The highest quality solutions (flag 1) are those with SNR>50 and
η<7.45deg, the lowest quality (flag 3) is assigned to entries
with SNR<50 and η>7.45deg, and the quality 2 comprises the
remaining solutions.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 22-Feb-2022