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J/PAZh/24/868       The triple system ADS 9167             (Kiyaeva+, 1998)
The triple system ADS 9167.
       Kiyaeva O.V., Tokovinin A.A., Kalinichenko O.A.
      <Pis'ma Astron. Zh. 24, 868 (1998)>
      =1998PAZh...24..868K      (SIMBAD/NED BibCode)
      =1998AstL...24..753K
ADC_Keywords: Binaries, spectroscopic ; Stars, double and multiple ;
              Radial velocities

Abstract:
    It is found from the observations with the correlation radial velocity
    meter that the primary component of the visual double star ADS 9167 is
    a single-lined spectroscopic binary with 2.87- yr period and 0.75
    eccentricity. Using the 26-year-long series of Pulkovo photographic
    relative-positions observations, a new visual orbit of AB is
    calculated with a period of about 1000 years.
Object:
    ------------------------------------------------
       RA    (2000)  DE       Designation
    ------------------------------------------------
    14 13 01.02  +55 19 31.5  ADS 9167A = HD 124640
    ------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        39       74   Radial velocities and residuals
table5.dat        81       65   Relative positions and residuals


Byte-by-byte Description of file: table1.dat

   Bytes Format  Units   Label   Explanations

   1- 11  F11.3  d       JDH     Heliocentric Julian day
  14- 19  F6.2   km/s    RV      Radial velocity
  24- 27  F4.2   km/s    e_RV    Error of radial velocity
  31- 35  F5.2   km/s    resV    ? Residual to orbit (for ADS 9167A only)
      37  A1     ---     Com     [*+:] Comment (1)
      39  A1     ---     COMP    [AB]  Component

Note (1): * - radial velocities derived from the combined A+B trace
          + - A and B are unseparated components
          : - rejected in orbit computation


Byte-by-byte Description of file: table5.dat

   Bytes Format  Units     Label     Explanations

   1-  8  F8.3   yr        Time      Year
  11- 15  F5.3   arcsec    Rho       Separation
  18- 21  F4.3   arcsec    e_Rho     Error of separation
  24- 30  F7.3   deg       Theta     Position angle (Eq. 2000.0)
  32- 36  F5.3   deg       e_Theta   Error of position angle
  39- 44  F6.3   arcsec    ResRHO1   Residual to orbit I in distance
  46- 51  F6.3   arcsec    ResTAU1   Residual to orbit I in tangential
  53- 58  F6.3   deg       ResTHET1  Residual to orbit I in angle
  63- 68  F6.3   arcsec    ResRHO2   Residual to orbit II in distance
  70- 75  F6.3   arcsec    ResTAU2   Residual to orbit II in tangential
  77- 81  F5.3   deg       ResTHET2  Residual to orbit II in angle
-------------------------------------------------------------------------------

Table 2. Elements of the spectroscopic orbit of ADS 9167 A
-----------------------------------------------------------
  Orbital element     Value
-----------------------------------------------------------
  Period P, days      1047.8 ± 5.7
  T0, JD           2449490.3 ± 4.7
  e                    0.754 ± 0.018
  w, deg                25.1 ± 2.4
  K1, km/s             13.52 ± 0.42
  Gamma, km/s         -20.48 ± 0.27
-----------------------------------------------------------

Table 3. Photometry of ADS 9167
-------------------------------------------------------
  Parameter      V        B-V       Source
-------------------------------------------------------
  m(A)           8.92     0.86      TYCHO
  m(B)           9.22     0.77      TYCHO
  m(B)-m(A)      0.35     -         HIPPARCOS (DHp)
  m(B)-m(A)      0.41     -0.03     1995PAZh...21..523T
  m(A+B)         8.34     0.95      This work
-------------------------------------------------------

Table 4. Estimated parameters of the components
----------------------------------------------------------------
  Component   V   B-V  SpType     Mass     MV   m-M    EW(B-V)
                                M☉                km/s
----------------------------------------------------------------
  Aa        9.18  0.91   K2V      0.82    6.3   2.9     3.68
  Ab       10.58  1.20   K6V      0.71    7.7   2.9     3.75
  Aa+Ab     8.92  0.96   -        1.53     -    -       -
  B         9.27  0.90   K2V      0.82    6.3   3.0     3.64
---------------------------------------------------------------

Table 6. Elements of the visual orbit of ADS 9167 AB
--------------------------------------------------------------
  Element           AMP, orbit I    AMP, orbit II     Hoppman
--------------------------------------------------------------
  Period, year      1283 ±433     1013 ±240     813
  Epoch             2169 ±519     2224 ±290    1960
  Eccentricity      0.24 ±0.11    0.27 ±0.10      0
  Axis, arcsec      3.87 ±0.84    3.56 ±0.55      2.275
  Node, deg.        333.3±4.0    336.0 ±3.7     102.6
  Long. peri., deg. 200.2±39.4   233.9 ±33.2      0
  Inclination, deg. 55.9 ±4.2      58.2±3.7      11.2
---------------------------------------------------------------
 Notes: (1) AMP - orbit computation method, described in
            Anovitskii (1980AZh....57.1227K)
        (2) Hoppman, 1964AnWie..26...25H

(End)                                 Veta Avedisova [INASAN]        21-Feb-1999