J/AJ/140/1657 PHASES diff. astrometry data archive. V. (Muterspaugh+, 2010)
The PHASES differential astrometry data archive.
V. Candidate substellar companions to binary systems.
Muterspaugh M.W., Lane B.F., Kulkarni S.R., Konacki M., Burke B.F.,
Colavita M.M., Shao M., Hartkopf W.I., Boss A.P., Williamson M.
<Astron. J., 140, 1657-1671 (2010)>
=2010AJ....140.1657M 2010AJ....140.1657M
ADC_Keywords: Stars, double and multiple ; Positional data ; Interferometry
Keywords: astrometry - binaries: close - binaries: visual -
techniques: interferometric
Abstract:
The Palomar High-precision Astrometric Search for Exoplanet Systems
monitored 51 subarcsecond binary systems to evaluate whether tertiary
companions as small as Jovian planets orbited either the primary or
secondary stars, perturbing their otherwise smooth Keplerian motions.
Six binaries are presented that show evidence of substellar companions
orbiting either the primary or secondary star. Of these six systems,
the likelihoods of two of the detected perturbations to represent real
objects are considered to be "high confidence," while the remaining
four systems are less certain and will require continued observations
for confirmation.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 30 6 Number of PHASES and Non-PHASES measurements and
unit-weight uncertainties for non-PHASES
measurements
table3.dat 49 1895 Non-PHASES astrometric measurements
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See also:
J/AJ/140/1579 : PHASES diff. astrometry data archive. I. (Muterspaugh+, 2010)
J/AJ/140/1623 : PHASES diff. astrometry data archive. II. (Muterspaugh+, 2010)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD star number
8- 9 I2 --- NP Number of PHASES measurements used for
orbit fitting
11 I1 --- NPO Number of non-PHASES astrometric measurements
used for orbit fitting
13- 15 I3 --- NNP Additional numbers of PHASES measurements
rejected as outliers
17- 18 I2 --- NNPO Additional numbers of non-PHASES measurements
rejected as outliers
20- 24 F5.3 arcsec e_rho 1σ measurement uncertainties for unit-weight
measurements from non-PHASES observations
in ρ (1)
27- 30 F4.2 deg e_theta 1σ measurement uncertainties for unit-weight
measurements from non-PHASES observations
in θ (1)
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Note (1): determined by iterating Keplerian fits to the measurements
with removal of 3σ or greater outliers in either dimension.
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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- 6 I6 --- HD Star HD number
8- 16 F9.4 yr Date Decimal year of the measurement
18- 22 F5.3 arcsec rho Separation ρ
24- 29 F6.2 deg theta Position angle θ
31- 35 F5.3 arcsec e_rho The 1σ uncertainty in rho
37- 41 F5.2 deg e_theta The 1σ uncertainty in theta
43- 46 F4.1 --- w Measurement weight
48- 49 I2 --- fO [0/1] Outlier code: 1=>3σ outlier
and omitted from the fit
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History:
From electronic version of the journal
References:
Muterspaugh et al., Paper I 2010AJ....140.1579M 2010AJ....140.1579M, Cat. J/AJ/140/1579
Muterspaugh et al., Paper II 2010AJ....140.1623M 2010AJ....140.1623M, Cat. J/AJ/140/1623
Muterspaugh et al., Paper III 2010AJ....140.1631M 2010AJ....140.1631M
Muterspaugh et al., Paper IV 2010AJ....140.1646M 2010AJ....140.1646M
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jul-2012