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J/AJ/140/1579  PHASES differential astrometry data archive (Muterspaugh+, 2010)

The PHASES differential astrometry data archive. I. Measurements and description. Muterspaugh M.W., Lane B.F., Kulkarni S.R., Konacki M., Burke B.F., Colavita M.M., Shao M., Wiktorowicz S.J., O'Connell J. <Astron. J., 140, 1579-1622 (2010)> =2010AJ....140.1579M
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 (PHASES) monitored 51 subarcsecond binary systems to determine precision binary orbits, study the geometries of triple and quadruple star systems, and discover previously unknown faint astrometric companions as small as giant planets. PHASES measurements made with the Palomar Testbed Interferometer (PTI) from 2002 until PTI ceased normal operations in late 2008 are presented. Infrared differential photometry of several PHASES targets were measured with Keck Adaptive Optics and are presented. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 55 51 List of studied stars table4.dat 142 1332 Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) astrometry measurements
See also: J/AJ/140/1623 : PHASES diff. astrometry data archive. II. (Muterspaugh+, 2010) J/AJ/140/1657 : PHASES diff. astrometry data archive. V. (Muterspaugh+, 2010) Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [HD] 4- 9 I6 --- HD Star HD number 11- 12 I2 h RAh Simbad Hour of Right Ascension (J2000.0) 14- 15 I2 min RAm Simbad Minute of Right Ascension (J2000.0) 17- 20 F4.1 s RAs Simbad Second of Right Ascension (J2000.0) 22 A1 --- DE- Simbad Sign of the Declination (J2000.0) 23- 24 I2 deg DEd Simbad Degree of Declination (J2000.0) 26- 27 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0) 29- 30 I2 arcsec DEs Simbad Arcsecond of Declination (J2000.0) 32- 36 F5.3 mag Bmag Simbad B band magnitude 38- 42 F5.3 mag Vmag Simbad V band magnitude 44- 55 A12 --- SpType Simbad MK spectral type
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD Star HD number 8- 18 F11.5 d HJD Heliocentric Julian Date of observation minus 2400000.5 (MJD) 20- 28 F9.4 mas delRA Differential Right Ascension between A and B 30- 38 F9.4 mas delDE Differential Declination between A and B 40- 43 F4.1 uas sigmin The 1σ uncertainty in minor axis uncertain ellipse 45- 51 F7.1 uas sigmaj The 1σ uncertainty in major axis uncertain ellipse 53- 58 F6.2 deg phi [0/180] Angle phi between uncertainty ellipse major axis and RA axis (1) 60- 65 F6.1 uas sigRA Projected formal uncertainty in RA axis 67- 72 F6.1 uas sigDE Projected formal uncertainty in DE axis 74- 81 F8.5 --- cor [-1/1] Correlation between sigRA and sigDE 83- 87 F5.1 uas sigminc Rescaled 1σ uncertainty in minor axis uncertain ellipse 89- 95 F7.1 uas sigmajc Rescaled 1σ uncertainty in major axis uncertain ellipse 97-103 F7.1 uas sigRAc Projected rescaled uncertainty in RA axis 105-110 F6.1 uas sigDEc Projected rescaled uncertainty in DE axis 112-119 F8.5 --- corc [-1/1] Correlation between sigRAc and sigDEc 121-125 I5 --- Num Number of scans taken during a given night 127 I1 --- fD [0/1] Longitudinal dispersion compensator code: in use (1) or not (0) 129 I1 --- fA [0/1] Autoaligner code: in use (1) or not (0) 131-140 A10 Hz Rate Tracking frequency of phase-referencing camera (50, 100 or both) 142 I1 --- fO [0/3] Outlier code (3)
Note (1): Measured from increasing differential right ascension through increasing differential declination (the position angle of the uncertainty ellipse's orientation is 90-φ); this is to be used with either columns sigmin and sigmaj or columns sigminc and sigmajc - the uncertainty scaling operates on the ellipse major and minor axes, and thus does not change the ellipse's rotation angle. Note (3): Outlier code as follows: 0 = measurement consistent with other measures 1 = a fringe ambiguity is suspected (the measurement is in error by ∼4mas) 2 = a significant outlier but not of the fringe ambiguity variety
History: From electronic version of the journal References: Muterspaugh et al., Paper II 2010AJ....140.1623M, Cat. J/AJ/140/1623 Muterspaugh et al., Paper III 2010AJ....140.1631M Muterspaugh et al., Paper IV 2010AJ....140.1646M Muterspaugh et al., Paper V 2010AJ....140.1657M, Cat. J/AJ/140/1657
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jul-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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