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 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:
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FileName Lrecl Records Explanations
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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
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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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)
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Note (1): Notes:
a: Suspected double from the Tycho-2 project, not a Hipparcos "problem" star.
b: High proper motion star.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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)
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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 1999AJ....117.1890M.
2 = System observed for Tycho-2 project (see Mason et al.,
2000AJ....120.3244M 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.
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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- 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)
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Note (1): Additional note:
1 = System used for spatial calibration.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ref Reference number
10- 28 A19 --- BibCode BibCode
30- 57 A28 --- Aut Author's names
59-130 A72 --- Com Comments
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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- 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)
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Note (1): Notes:
a: Observed in Paper I, Mason et al., 1999AJ....117.1890M 1999AJ....117.1890M. Not resolved.
b: Observed twice.
c: Observed in Paper I, Mason et al., 1999AJ....117.1890M 1999AJ....117.1890M. Measured.
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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 --- HIP HIP (Cat. I/239) number
7- 9 A3 --- Note [abc, ] Note (1)
11- 13 A3 --- Type Hippacos solution (G1)
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Note (1): Notes:
a: Observed in Paper I, Mason et al., 1999AJ....117.1890M 1999AJ....117.1890M. Not resolved.
b: Observed thrice.
c: Observed twice.
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP (Cat. I/239) number
7 A1 --- Note [a] a: Observed twice
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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
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History:
From electronic version of the journal
References:
Mason et al., Paper I 1999AJ....117.1890M 1999AJ....117.1890M
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 11-Sep-2001