J/A+A/442/365 Astrometric orbits of SB9 stars (Jancart+, 2005)
Astrometric orbits of SB9 stars.
Jancart S., Jorissen A., Babusiaux C., Pourbaix D.
<Astron. Astrophys., 442, 365-380 (2005)>
=2005A&A...442..365J 2005A&A...442..365J
ADC_Keywords: Binaries, spectroscopic ; Binaries, orbits
Keywords: astrometry - stars: binaries: spectroscopic -
stars: fundamental parameters
Abstract:
Hipparcos Intermediate Astrometric Data (IAD) have been used to derive
astrometric orbital elements for spectroscopic binaries from the newly
released Ninth Catalogue of Spectroscopic Binary Orbits (SB9^_).
This endeavour is justified by the fact that (i) the astrometric
orbital motion is often difficult to detect without the prior
knowledge of the spectroscopic orbital elements, and (ii) such
knowledge was not available at the time of the construction of the
Hipparcos Catalogue for the spectroscopic binaries which were recently
added to the SB9^_ catalogue.
Among the 1374 binaries from SB9^_ which have an HIP entry
(excluding binaries with visual companions, or DMSA/C in the Double
and Multiple Stars Annex), 282 have detectable orbital astrometric
motion (at the 5% significance level). Among those, only 70 have
astrometric orbital elements that are reliably determined (according
to specific statistical tests), and for the first time for 20 systems.
This represents a 8.5% increase of the number of astrometric systems
with known orbital elements (The Double and Multiple Systems Annex
contains 235 of those DMSA/O systems).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 8 282 The 282 stars flagged as astrometric binaries
(Pr1, Pr2, Pr3<0.05 and F2TI<2.37)
table3.dat 90 70 The 70 orbital solutions (Campbell solutions)
passing all consistency tests.
table4.dat 91 31 The 31 new orbital solutions (Campbell solutions)
passing the Pr1, Pr2 and Pr3 tests at the
0.006% level, but failing at least one of the
consistency tests.
table5.dat 117 39 The 39 systems with a DMSA/O entry which do not
fulfill the 2 tests assessing the reliability
of the astrometric orbital elements, namely
ξ<3 and ε>0.4 and the probability
tests at the 0.006% level (see text).
table6.dat 97 29 Masses and mass ratios for the 29 systems with
main-sequence primaries passing all consistency
tests.
refs.dat 80 66 References
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See also:
B/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2009)
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- 6 I6 --- HIP HIP (Cat. I/239) number
8 A1 --- n_HIP [f] f for stars passing the Pr1, Pr2 and Pr3 tests
at the more stringent 0.006% level, and F2TI<2.37
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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 --- HIP HIP (Cat. I/239) number
8- 12 F5.2 mas a0 Relative semi-major axis
14- 17 F4.2 mas e_a0 rms uncertainty on a0
19- 23 F5.3 --- e Eccentricity
25- 30 F6.2 deg incl Inclination
32- 36 F5.2 deg e_incl rms uncertainty on incl
38- 43 F6.2 deg omega1 Argument of the periastron
45- 50 F6.2 deg OMEGA Latitude of the ascending node
52- 57 F6.2 deg e_OMEGA rms uncertainty on OMEGA
59- 67 F9.1 d T0 HJD of origin
69- 74 F6.1 d Per Period
76 A1 --- DMSA DMSA system type (from HIP), O=orbital solution
77 A1 --- --- [(]
78- 81 F4.2 --- a/ahip ? Orbital semi-major axes ratio,
DMSA/O annex/this work
82 A1 --- --- [;-]
83- 86 F4.2 --- i/ihip ? Inclinations ratio, DMSA/O annex/this work
87 A1 --- --- [)]
89- 90 I2 --- Ref Reference for the spectroscopic orbit used
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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 --- HIP HIP (Cat. I/239) number
8- 13 F6.2 mas a0 Relative semi-major axis
15- 22 F8.2 mas e_a0 rms uncertainty on a0
24- 27 F4.2 --- e Eccentricity
29- 33 F5.1 deg incl Inclination
35- 38 F4.1 deg e_incl rms uncertainty on incl
40- 44 F5.1 deg omega1 Argument of the periastron
47- 51 F5.1 deg OMEGA Latitude of the ascending node
53- 56 F4.1 deg e_OMEGA rms uncertainty on OMEGA
59- 67 F9.1 d T0 HJD of origin
69- 75 F7.1 d Per Period
78 A1 --- DMSA DMSA system type
80- 83 F4.2 --- xi Values of the corresponding empirical tests
85- 88 F4.2 --- epsilon Values of the corresponding empirical tests
90- 91 I2 --- Ref Reference for the spectroscopic orbit used
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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
8 A1 --- xi [y/n] ξ<3 ? (1)
10 A1 --- epsilon [y/n] ε>0.4 (1)
12 A1 --- Pr [y/n] Probability tests at the 0.006% level (1)
14-117 A104 --- Rem Remarks
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Note (1): n correspond to failed tests.
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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
8- 11 F4.2 solMass M1 ?=- Mass of the primary
13- 16 F4.2 solMass M2 ?=- Mass of the secondary
18- 21 F4.2 --- M2/M1 ?=- M2/M1 mass ratio
23- 28 F6.4 --- Q Q ratio, Q=(M23)/((M1+M2)2)
30- 37 A8 --- SpType MK spectral type
38- 97 A60 --- Rem Remarks
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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- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 43 A20 --- Aut Author's name
45- 80 A36 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-Jul-2006