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J/AJ/121/3224             Speckle interferometry of HIP binaries  (Mason+, 2001)

Speckle interferometry of new and problem Hipparcos binaries. II. Observations obtained in 1998-1999 from McDonald observatory. Mason B.D., Hartkopf W.I., Holdenried E.R., Rafferty T.J. <Astron. J. 121, 3224 (2001)> =2001AJ....121.3224M
ADC_Keywords: Stars, double and multiple ; Positional data Keywords: binaries: close - techniques: interferometric Abstract: The Hipparcos satellite made measurements of over 9734 known double stars, 3406 new double stars, and 11,687 unresolved but possible double stars. The high angular resolution afforded by speckle interferometry makes it an efficient means to confirm these systems from the ground, which were first discovered from space. Because of its coverage of a different region of angular separation-magnitude difference (ρ-Δm) space, speckle interferometry also holds promise to ascertain the duplicity of the unresolved Hipparcos "problem" stars. Presented are observations of 116 new Hipparcos double stars and 469 Hipparcos "problem stars," as well as 238 measures of other double stars and 246 other high-quality nondetections. Included in these are observations of double stars listed in the Tycho-2 Catalogue and possible grid stars for the Space Interferometry Mission. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 65 8 Newly resolved double stars table2.dat 58 180 Resolved binaries (no orbit) table3.dat 77 126 Resolved binaries (with orbit residuals) refs.dat 130 57 References to table3.dat table4.dat 33 47 Unresolved Hipparcos double stars table5.dat 13 462 Unresolved Hipparcos "problem" stars table6.dat 10 246 Unresolved Hipparcos stars
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right Ascension (J2000) 4- 7 F4.1 min RAm Right Ascension (J2000) 9 A1 --- DE- Sign of the Declination (J2000) 10- 11 I2 deg DEd Declination (J2000) 13- 14 I2 arcmin DEm Declination (J2000) 16- 21 A6 --- Disc Discovery designation 23- 28 I6 --- HIP ? HIP (Cat. I/239) number 30 A1 --- Type [XGO] Hipparcos solution (G1) 32- 40 F9.4 yr Obs Besselian year of observation 42- 46 F5.1 deg PA Position angle 47 A1 --- u_PA [:] Indicates reduced accuracy in PA 49- 53 F5.3 arcsec Sep Angular separation 54 A1 --- u_Sep [:] Indicates reduced accuracy in Sep 56- 58 I3 yr Per ? Estimated period 60 A1 --- Note [ab] Notes (1)
Note (1): Notes: a: Suspected double from the Tycho-2 project, not a Hipparcos "problem" star. b: High proper motion star.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right Ascension (J2000) 4- 7 F4.1 min RAm Right Ascension (J2000) 9 A1 --- DE- Sign of the Declination (J2000) 10- 11 I2 deg DEd Declination (J2000) 13- 14 I2 arcmin DEm Declination (J2000) 16- 28 A13 --- Disc Discovery designation 30- 38 F9.4 yr Obs Besselian year of observation 40- 44 F5.1 deg PA Position angle 45 A1 --- u_PA [:] Indicates reduced accuracy in PA 47- 52 F6.3 arcsec Sep Angular separation (1) 53 A1 --- u_Sep [:] Indicates reduced accuracy in Sep 55 I1 --- NumPos Number of observations to calculate the mean position 57 I1 --- Note ? An additional note (2)
Note (1): Not been corrected for precession and are, thus, based upon the equinox for the epoch of observation. Note (2): Additional notes: 1 = Binary not detected in Paper I, Mason et al., 1999AJ....117.1890M. 2 = System observed for Tycho-2 project (see Mason et al., 2000AJ....120.3244M) 3 = {theta1} Ori: Observed with 5x objective that has limited calibration. 4 = Large change in position (5.8°/yr, ρ increasing). 5 = Agrees well with Hipparcos observation but not Paper I. 6 = Also known as CHR 212.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right Ascension (J2000) 4- 7 F4.1 min RAm Right Ascension (J2000) 9 A1 --- DE- Sign of the Declination (J2000) 10- 11 I2 deg DEd Declination (J2000) 13- 14 I2 arcmin DEm Declination (J2000) 16- 26 A11 --- Disc Discovery designation 28- 36 F9.4 yr Obs Besselian year of observation 38- 42 F5.1 deg PA Position angle 43 A1 --- u_PA [:] Indicates reduced accuracy in PA 45- 49 F5.3 arcsec Sep Angular separation 50 A1 --- u_Sep [:] Indicates reduced accuracy in Sep 52 I1 --- nPos Number of observations to calculate the mean position 54- 58 F5.1 deg (O-C)PA Position angle residual 60- 65 F6.3 arcsec (O-C)Sep Angular separation residual 67- 74 A8 --- r_(O-C) Orbit calculation references (in refs.dat file) 76 I1 --- Note ? An additional note (1)
Note (1): Additional note: 1 = System used for spatial calibration.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Ref Reference number 10- 28 A19 --- BibCode BibCode 30- 57 A28 --- Aut Author's names 59-130 A72 --- Com Comments
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right Ascension (J2000) 4- 7 F4.1 min RAm Right Ascension (J2000) 9 A1 --- DE- Sign of the Declination (J2000) 10- 11 I2 deg DEd Declination (J2000) 13- 14 I2 arcmin DEm Declination (J2000) 16- 19 I4 --- HDS Hipparcos double star number 21- 22 A2 --- n_HDS Multiplicity index on HDS 24- 29 I6 --- HIP HIP (Cat. I/239) number 31- 33 A3 --- Note [abc, ] Notes (1)
Note (1): Notes: a: Observed in Paper I, Mason et al., 1999AJ....117.1890M. Not resolved. b: Observed twice. c: Observed in Paper I, Mason et al., 1999AJ....117.1890M. Measured.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP (Cat. I/239) number 7- 9 A3 --- Note [abc, ] Note (1) 11- 13 A3 --- Type Hippacos solution (G1)
Note (1): Notes: a: Observed in Paper I, Mason et al., 1999AJ....117.1890M. Not resolved. b: Observed thrice. c: Observed twice.
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP (Cat. I/239) number 7 A1 --- Note [a] a: Observed twice
Global notes: Note (G1): Types: (G) Hipparcos acceleration solution (O) Hipparcos orbit solution (V) Hipparcos "variable induced mover" (S) Hipparcos "suspected nonsingle" (X) Hipparcos stochastic solution
History: From electronic version of the journal References: Mason et al., Paper I 1999AJ....117.1890M
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 11-Sep-2001
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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