J/AJ/160/251 Radial velocities & orbital data, 5 triple stars (Tokovinin+, 2020)
Orbits of Five Triple Stars.
Tokovinin A., Latham D.W.
<Astron. J., 160, 251 (2020)>
=2020AJ....160..251T 2020AJ....160..251T
ADC_Keywords: Stars, double and multiple; Spectra, optical; Radial velocities;
Positional data
Keywords: Spectroscopic binary stars ; Visual binary stars
Abstract:
Joint analysis of radial velocities and position measurements of five
hierarchical stellar systems is undertaken to determine elements of
their inner and outer orbits and, whenever possible, their mutual
inclinations. The inner and outer periods are 12.9 and 345yr for
HD12376 (ADS1613), 1.14 and ∼1500yr for HD19971 (ADS2390), 8.3 and
475yr for HD89795 (ADS7338), 1.11 and 40yr for HD152027, 0.69 and
7.4yr for HD190412. The latter system with its coplanar and
quasi-circular orbits belongs to the family of compact planetary-like
hierarchies, while the orbits in HD12376 have a mutual inclination of
131°.
Description:
Radial velocities (RVs) observations have been obtained at the
Harvard-Smithsonian Center for Astrophysics (CfA) using several
instruments on different telescopes. The Digital Speedometers were
used on 1.5m telescopes at the Oak Ridge Observatory (Harvard,
Massachusetts) and the Fred L. Whipple Observatory (Mount Hopkins,
Arizona), as well as on the Multiple Mirror Telescope (MMT) with an
equivalent aperture of 4.5m (also on Mount Hopkins) before its
conversion to a monolithic-mirror telescope (centered at 5187Å,
R=35000).
We also used the Tillinghast Reflector Echelle Spectrograph (TRES)
attached to the 1.5m telescope on Mount Hopkins, which covers the
wavelength range 3900-9100Å at a resolving power of 44000.
The orbits ofHD 12376 and HD89795 also use RVs measured with the
CORAVEL instruments located at the Haute Provence and La Silla
observatories, respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 57 5 List of multiple systems
table4.dat 49 333 Radial velocities and residuals
table5.dat 58 299 Position measurements and residuals
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)
V/117 : Geneva-Copenhagen Survey of Solar neighbourhood (Holmberg+, 2007)
J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII. (Hartkopf+, 2000)
J/A+A/382/118 : Spectroscopic sub-systems in multiple stars (Tokovinin+, 2002)
J/AJ/127/539 : Speckle interferometry at USNO. IX. (Mason+, 2004)
J/AJ/142/176 : Exoplanet host stars. II. Speckle interferometry (Mason+, 2011)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/AJ/149/195 : Spectroscopy of the quadruple system HD 91962 (Tokovinin+,2015)
J/AJ/153/208 : LCES HIRES/Keck radial velocity Exoplanet Survey (Butler+,2017)
J/AJ/153/212 : Observations of binary stars at WIYN telescope (Horch+, 2017)
J/ApJ/838/54 : Accurate astrometry & RVs 4 multiple systems (Tokovinin+, 2017)
J/ApJS/235/6 : Updated Multiple Star Catalog; August 2019 (Tokovinin, 2018)
J/AJ/158/48 : Speckle interferometry at SOAR in 2018 (Tokovinin+, 2019)
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 Washington Double Star (WDS) identification
12- 17 I6 --- HD HD number
19- 23 I5 --- HIP Hipparcos number
25- 28 F4.2 mag Vmag [7.69/8.66] Visual magnitude
30- 34 F5.2 mas plx [14.8/20.6] Parallax
36- 39 A4 --- Torbo Type of outer orbit (1)
41- 46 F6.1 yr Pout [7.4/1500] Outer period
48- 51 A4 --- Torbi Type of inner orbit (1)
53- 57 F5.2 yr Pin [0.69/12.9] Inner period
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Note (1): Types as follows:
V = visual orbit
A = astrometric orbit
S1 = single-lined spectroscopic orbit
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
8- 10 A3 --- Comp Component identification
12- 21 F10.4 d JD [43519/57917] Julian date, JD-2400000
23- 29 F7.3 km/s RVel [-63.6/25.5] Radial velocity
31- 35 F5.3 km/s e_RVel [0.05/2] Error in RVel
37- 42 F6.3 km/s O-C [-2.51/2.8] Residual to the orbit
44- 49 A6 --- Inst Instrument used (1)
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Note (1): Instruments as follows:
CfA = CfA digital speedometers (145 occurrences)
MMT = CfA speedometer on MMT (7 occurrences)
TRES = TRES (12 occurrences)
COR = CORAVEL (137 occurrences)
TS2002 = Tokovinin & Smekhov, 2002, J/A+A/382/118 (27 occurrences)
Butler = Butler+, 2017, J/AJ/153/208 with offset of -55.04km/s (5 occurrences)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
8- 12 A5 --- Syst System designation
14- 22 F9.4 yr Date [1843/2020] Date; Julian year
24- 28 F5.1 deg PA [1.7/339] Position angle
30- 35 F6.4 arcsec Sep [0.03/2.94] Separation
37- 42 F6.4 arcsec e_Sep [0.002/1] Error in Sep
44- 48 F5.1 deg (O-C)PA [-18.1/19.1] Residual in PA
50- 56 F7.4 arcsec (O-C)sep [-0.43/0.24] Residual in Sep
58 A1 --- Meth Measurement method (1)
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Note (1): Methods as follows:
C = CCD measurement (20 occurrences)
G = Gaia (1 occurrence)
H = Hipparcos (4 occurrences)
M = visual micrometer measurement (172 occurrences)
P = photographic measurement (11 occurrences)
S = speckle interferometry at SOAR (29 occurrences)
s = speckle interferometry at other telescopes (62 occurrences)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 29-Jan-2021