J/AJ/161/144 Inner & outer orbits in 13 multiple stars systems (Tokovinin, 2021)
Inner and outer orbits in 13 resolved hierarchical stellar systems.
Tokovinin A.
<Astron. J., 161, 144 (2021)>
=2021AJ....161..144T 2021AJ....161..144T
ADC_Keywords: Stars, double and multiple; Parallaxes, trigonometric;
Positional data; Optical
Keywords: Binary stars ; Multiple stars ; Visual binary stars
Abstract:
Orbits of inner and outer subsystems in 13 triple or higher-order
stellar systems are computed or updated using position measurements
and, in three cases, radial velocities. The goal is to determine
mutual orbital inclinations, period ratios, and masses to complement
the statistics of hierarchical systems. The effect of the subsystems
on the motion in the outer orbits (wobble) is explicitly modeled to
determine inner mass ratios. Stars studied here (HD 5408, 8036, 9770,
15089, 29310, 286955, 29316, 140538, 144362, 154621, 156034, 185655,
and 213235) are bright and nearby (from 15pc to 150pc). Their inner
periods range from 1.7yr to 49yr, and the outer periods from 83 to
2400yr. Some long-period outer orbits are poorly constrained. Four
astrometric inner orbits and one outer orbit are computed for the
first time.
Description:
The position measurements were retrieved from the Washington Visual
Double Star (WDS) database and, where possible, complemented by the
recent speckle interferometry at the Southern Astrophysical Research
(SOAR) 4.1m telescope. The latest SOAR observations were made in
2020-Aug.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 81 13 List of multiple systems
table3.dat 64 1429 Position measurements and residuals
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See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
J/A+A/341/121 : Visual binary orbits and masses (Soederhjelm 1999)
J/A+A/356/141 : BV photometry for components of HIP doubles (Fabricius+, 2000)
J/A+A/382/118 : Spectroscopic sub-systems in multiple stars (Tokovinin+, 2002)
J/ApJ/652/681 : Spectroscopic subcomponents in multiple systems (Docobo+, 2006)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/MNRAS/449/3160 : Stellar multiplicity and debris discs (Rodriguez+, 2015)
J/AJ/150/50 : Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)
J/AJ/152/138 : Orbits based on speckle interferometry at SOAR (Tokovinin,2016)
J/AJ/151/153 : Speckle interferometry at SOAR in 2015 (Tokovinin+, 2016)
J/AJ/153/208 : LCES HIRES/Keck radial velocity Exoplanet Survey (Butler+,2017)
J/ApJ/844/103 : Orbit alignment in triple stars (Tokovinin, 2017)
J/ApJ/838/54 : Accurate astrometry & RVs, 4 multiple systems (Tokovinin+,2017)
J/A+A/619/A81 : Multiplicity among solar-type stars. IV. (Halbwachs+, 2018)
J/ApJS/235/6 : Updated Multiple Star Catalog; August 2019 (Tokovinin, 2018)
J/AJ/157/56 : DSSI observations binary & trinary star systems (Horch+, 2019)
J/A+A/626/A31 : Radial velocities of nearby stars (Sperauskas+, 2019)
J/AJ/158/48 : Speckle interferometry at SOAR in 2018 (Tokovinin+, 2019)
J/AJ/160/251 : RVel & orbital data, 5 triple stars (Tokovinin+, 2020)
J/AJ/160/7 : 2019 SOAR speckle interfero. of binary stars (Tokovinin+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS identification (WDS JHHMMm+DDMM)
12- 17 I6 --- HD HD identifier
19- 24 I6 --- HIP HIP identifier
26- 30 F5.2 mag Vmag [4.52/10.06] V-band magnitude
32- 36 F5.2 mas plx [5.6/67.71] Parallax
38 A1 --- f_plx [DG] Flag on plx; Gaia DR1 (10 occurrences) or
Dynamical (3 occurrences)
40- 43 A4 --- TypeOut Outer system types (1)
45- 50 F6.1 yr Pout [84/2400] Outer period
52- 57 A6 --- TypeIn Inner system types (1)
59- 63 F5.2 yr Pin [1.7/48.7] Inner period
65- 79 A15 Msun Mass Masses of three main components
81 I1 --- Ncomp [3/5] Number of components
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Note (1): Types as follows:
V = visual orbit
A = astrometric orbit
S1 = single-lined spectroscopic orbit
* = first orbit
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS identification
12- 17 A6 --- Syst System designation
19- 27 F9.4 yr Date [1827/2021] Date (Julian year)
29- 33 F5.1 deg PA [0/360] Position angle
35- 40 F6.4 arcsec Sep [0.01/4.64] Separation
42- 47 F6.4 arcsec e_Sep [0.001/1.25] Error
49- 54 F6.1 deg (O-C)PA [-344.3/347.1] Residual in P.A.
56- 62 F7.4 arcsec (O-C)Sep [-0.5925/0.3963] Residual in Sep.
64- 64 A1 --- Method Measurement method (1)
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Note (1): Measurement techniques as follows:
A = adaptive optics (19 occurrences)
C = CCD measurement (9 occurrences)
G = Gaia (1 occurrence)
H = Hipparcos (11 occurrences)
J = Finsen's eyeiece micrometer (5 occurrences)
M = visual micrometer measurement (798 occurrences)
P = photographic measurement (21 occurrences)
S = speckle interferometry at SOAR (233 occurrences)
s = speckle interferometry at other telescopes (332 occurrences)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 30-Apr-2021