N. Kharchenko, A. Piskunov, R.-D.Scholz

The catalogue of radial velocities of galactic stars with high precision astrometric data (CRVAD)

 Description:
    The catalogue of radial velocities of Galactic stars with high
    precision astrometric data (CRVAD) is the result of a merging of star
    lists from the General Catalog of Mean Radial Velocities (GCRV, Cat.
    III/213) and from the All-sky Compiled Catalogue of 2.5 Million Stars
    (ASCC-2.5, Cat. I/280). The cross identification of GCRV and ASCC-2.5
    objects was carried out with help of coordinate, magnitude, colour
    and/or spectral type criteria. Data from the Catalogue of Components
    of Double and Multiple Stars (CCDM, Cat. I/274) were taken into
    account for the identification of multiple system components. 34553
    stars of the ASCC-2.5 were identified with 33509 stars of the GCRV,
    i.e. 33509 stars of the GCRV have one entry in the ASCC-2.5, and 1044
    objects have two entries. The catalogue includes accurate equatorial
    coordinates J2000, proper motions and trigonometric parallaxes in the
    Hipparcos system, B and V magnitudes in Johnson system, spectral
    classes, multiplicity and variability flags from the ASCC-2.5, and
    radial velocities, stellar magnitudes and spectra from the GCRV. Stars
    are sorted in right ascension J2000 order.

    3967 stars were selected as radial velocity standard candidates (file
    rv_std.dat). These stars:
    - do not have any multiplicity and/or variability flags
      both in the GCRV and ASCC-2.5;
    - have standard errors of equatorial coordinates e <= 40 mas;
    - have standard errors of proper motions e_pm <= 4 mas/yr;
    - have standard errors of V magnitude e_V <= 0.05 mag
      and (B-V) colour e_(B-V) <= 0.07 mag;
    - have standard errors of radial velocity e_RV <= 2 km/s or
      quality index A or B, which corresponds to e_RV 0.74 and 1.78 km/s;
    - have at least four RV observations N_RV.

Data 

Bite by bite description of the catalogue of radial velocities
of galactic stars with high precition astrometric data 

File Summary:
--------------------------------------------------------------------------------
 FileName   Lrecl  Records    Explanations
--------------------------------------------------------------------------------
ReadMe         80        .    This file
catalog.dat   227    34553   *The Catalogue
rv_std.dat    163     3967    Candidates to RV standards
--------------------------------------------------------------------------------
Note on catalog.dat:
   data in columns 1-162 are taken from the ASCC-2.5 (Cat. I/280)
   data in columns 164-225 are taken from the GCRV (Cat. III/213)
--------------------------------------------------------------------------------

See also:
   I/280 :  All-sky Compiled Catalogue of 2.5 million stars
            (ASCC-2.5, Kharchenko 2001)
 III/213 : General Catalog of mean radial velocities
            (GCRV, Barbier-Brossat+, 2000)
   I/274 :  Catalogue of the Components of Double and Multiple Stars
            (CCDM, Dommanget+ 2002)
   I/239 :  The Hipparcos and Tycho Catalogues (ESA 1997)
   I/259 :  The Tycho-2 Catalogue (Hog+ 2000)
   I/146 :  Positions and Proper Motions - North (PPM, Roeser+, 1988)
   I/193 :  Positions and Proper Motions - South (PPM, Bastian+ 1993)
   I/208 :  The 90000 stars Supplement to the PPM Catalogue (PPM, Roeser+, 1994)
   I/256 :  Carlsberg Meridian Catalogs (CMC, 1999)

Byte-by-byte Description of file:  catalog.dat
--------------------------------------------------------------------------------
  Bytes Format Units    Label   Explanations
--------------------------------------------------------------------------------
   1- 12  F12.9  h      RAhour  Right Ascension J2000.0, epoch 1991.25
  14- 25  F12.8 deg     DEdeg   Declination J2000.0, epoch 1991.25
  26- 31  F6.1  mas   e_RAhour  Standard error in RA*cos(DEdeg)
  32- 37  F6.1  mas   e_DEdeg   Standard error in DEdeg
  38- 45  F8.2  mas     Plx     ?=9999.99 Trigonometric parallax
  46- 52  F7.2  mas   e_Plx     ?=999.99 Standard error in Plx
  53- 61  F9.2  mas/yr  pmRA    Proper Motion in RA*cos(DEdeg)
  62- 70  F9.2  mas/yr  pmDE    Proper Motion in DE
  71- 77  F7.2  mas/yr  e_pmRA  Standard error in pmRA
  78- 84  F7.2  mas/yr  e_pmDE  Standard error in pmDE
  85- 91  F7.3  mag     Bmag    ?=99.999 B magnitude in Johnson system
  92- 98  F7.3  mag     Vmag    ?=99.999 V magnitude in Johnson system
  99-104  F6.3  mag   e_Bmag    ?=9.999 Standard error on B magnitude
 105-110  F6.3  mag   e_Vmag    ?=9.999 Standard error on V magnitude
 111-116  F6.3  mag     Scat    ?=9.999 Scatter on magnitude
     118  A1    ---     v1     *[GN ] Known variability from GCVS/NSV
     119  A1    ---     v2     *[UVW ] Variability from Tycho-1
     120  A1    ---     v3     *[CDMPRU ] Variability type
     121  A1    ---     v4     *[VYIXR ] Variability from CMC11
 122-123  A2    ---     d12    *[A-S ] CCDM component identifier (Cat. I/274)
     124  A1    ---     d3     *[A-S ] Component identifier
     125  A1    ---     d4     *[DRSYZ ] Duplicity from Tycho-1
     126  A1    ---     d5     *[CGOVX ] Double/Multiple Systems flag
     127  A1    ---     d6      [D ] Duplicity flag from PPM
 129-140  A12   ---     SpType  MK Spectral type (from ASCC-2.5)
 142-147  I6    ---     HIP     ?=0 Hipparcos number (Cat. I/239)
 149-154  I6    ---     HD      ?=0 HD number (Cat. III/135)
 156-162  I7    ---     ASCC    ASCC-2.5 (Cat. I/280) number
 164-168  I5    ---     GCRV    GCRV (Cat. III/213) number
 170-182  A13   ---     CCDM   *CCDM number of multiple star and its components
 184-188  F5.2  mag     mag     ?=99.99 Visual or photographic GCRV magnitude
     190  A1    ---   n_mag    *[* ] indicates a photographic mag
     191  A1    ---   u_mag    *[V: ] variability or uncertainty on mag
 193-203  A11   ---     SpGCRV  ? MK Spectral type from GCRV (Cat. III/213)
 205-211  F7.2  km/s    RV      Average Radial Velocity
 212-216  F5.1  km/s  e_RV      ?=-9.9 Mean standard error in RV
     218  A1    ---   n_RV     *[Gge ] Note on RV
     219  A1    ---   u_RV     *[:* ]
     220  A1    ---   q_RV     *[A-E I] Quality index of the RV
     221  A1    ---   f_RV     *[SOCR ] Flag of star type
 222-225  I4    ---   o_RV      ?=0 Number of observations
 226-227  I2    ---   N_mult    [1,2] Number of matches for given GCRV entry
--------------------------------------------------------------------------------

Note on v1:
    Byte 292 from Tycho-1 file tyc_main.dat
    This flag is set when the variability is known:
    G : variable known in General Catalog of Variable Stars
    N : variable known in New Suspected Variables catalog

Note on v2:
    Byte 294 from Tycho-1 file tyc_main.dat
    This flag has the following meaning:
    U : apparent variability in the Tycho data; may be due to duplicity
    V : strong evidence of intrinsic variability
    W : suspected intrinsic variability

Note on v3:
    Byte 322 from Hipparcos file hip_main.dat
    Hipparcos-defined type of variability (a blank entry signifies
    that the entry could not be classified as variable or constant):
    C : no variability detected ("constant")
    D : duplicity-induced variability
    M : possibly micro-variable (amplitude < 0.03mag)
    P : periodic variable
    R : V-I colour index was revised due to variability analysis
    U : unsolved variable which does not fall in the other categories

Note on v4:
    Flag from CMC11 catalogue
    V      : variable star
    Y or I : if the CAMC did not measure the mag, an approximate value
             from other sources is given to a precision of 0.1 mag
    X or R : star fainter than 12 with unknown mag is given as 12.

Note on d12:
    Bytes 149, 150 from Tycho-2 file catalog.dat.
    The CCDM component identifiers for double or multiple Hipparcos stars
    contributing to this Tycho-2 entry.

Note on d3:
    Byte 41 from Hipparcos file hip_dm_com.dat

Note on d4:
    Byte 296 from Tycho-1 file tyc_main.dat
    Unresolved duplicity status from Tycho data analysis:
    D     : duplicity clearly indicated (B_Tmag and V_Tmag refer to
            combined light)
    R     : duplicity weakly indicated, combined with indication of
            variability
    S     : duplicity suspected
    Y     : investigation for duplicity carried out on Tycho data,
            no indication of duplicity was found
    Z     : investigation for duplicity not carried out
    blank : Hipparcos star not observed by Tycho

Note on d5:
    Byte 347 from Hipparcos file hip_main.dat
    Indicates that further details are given in the Hipparcos Double
    and Multiple Systems Annex:
    C : solutions for the components
    G : acceleration or higher order terms
    O : orbital solutions
    V : variability-induced movers (apparent motion arises from
        variability)
    X : stochastic solution (probably astrometric binaries with short
        period)

Note on CCDM:
    CCDM index (Cat. I/274) is copied from the GCRV (Cat. III/213);

Note on n_mag:
    This flag is "*" if mag is photographic or B magnitude;

Note on u_mag:
    This flag has the following meanings:
      V for variable star,
      ":" if the data is uncertain;

Note on n_RV:
    This flag has the following meanings:
      e: for emission radial velocity
      G: RV of the gravity center for double or multiple system
      g: RV of the gravity center for a sub-system

Note on u_RV:
    This flag has the following meanings:
      ":" uncertainty on RV,
      "*" approximate value of RV;

Note on q_RV:
    from A to E decreasing quality, I for insufficient data;

Note on f_RV:
    This flag has the following meanings:
          S = STND : UAI's standard star
          O = ORB  : systemic velocity
          C = CEPH : cepheid star
          R = RRLY : RR Lyrae star
--------------------------------------------------------------------------------

Byte-by-byte Description of file:  rv_std.dat
--------------------------------------------------------------------------------
  Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1- 12  F12.9  h      RAhour   Right Ascension J2000.0, epoch 1991.25
  14- 25  F12.8 deg     DEdeg    Declination J2000.0, epoch 1991.25
  26- 31  F6.1  mas   e_RAhour   Standard error in RA*cos(DEdeg)
  32- 37  F6.1  mas   e_DEdeg    Standard error in DEdeg
  38- 45  F8.2  mas     Plx      ?=9999.99 Trigonometric parallax
  46- 52  F7.2  mas   e_Plx      ?=999.99 Standard error in Plx
  53- 61  F9.2  mas/yr  pmRA     Proper Motion in RA*cos(DE)
  62- 70  F9.2  mas/yr  pmDE     Proper Motion in DE
  71- 77  F7.2  mas/yr  e_pm     Standard error in pm
  78- 84  F7.3  mag     Vmag     V magnitude in Johnson system
  85- 90  F6.3  mag   e_Vmag     Standard error on V magnitude
  91- 97  F7.3  mag     B-V      (B-V) colour in Johnson system
  98-103  F6.3  mag   e_B-V      Standard error on (B-V) colour
 105-116  A12   ---     Sp       ? Spectral type and luminosity class
 118-124  F7.2  km/s    RV       Mean Radial Velocity
 125-129  F5.1  km/s  e_RV      *?=-9.9 Mean standard error in RV
     131  A1    ---   q_RV      *[AB ] Quality index
 132-135  I4    ---   o_RV       Number of observations
 137-142  I6    ---     HIP      ?=0 Hipparcos number (Cat. I/239)
 144-149  I6    ---     HD       ?=0 HD number (Cat. III/135)
 151-157  I7    ---     ASCC     ASCC-2.5 number (Cat. I/280)
 159-163  I5    ---     GCRV     GCRV number  (Cat. III/213)
--------------------------------------------------------------------------------
Note on e_RV, q_RV:
    the accuracy of radial velocity is described by a standard error
    or quality index A or B, that correspond to an error of 0.74 and
    1.78 km/s, respectively.
--------------------------------------------------------------------------------

References:

 Barbier-Brossat M., Figon P., 2000, "General catalog of averaged
    stellar radial velocities for galactic stars", AApSS, 142, 217
    (GCRV) (Cat. III/213)

 Kharchenko N.V., 2001, "All-sky Compiled Catalogue of 2.5 million
    stars", Kinematics and Physics of Celestial Bodies, 17, 409
    (ASCC-2.5) (Cat. I/280A)

 Kharchenko N.V., Piskunov A.E., Scholz R.-D., 2004, "Astrophysical
    supplements to the ASCC-2.5. I. Radial velocity data", AN, 325,
    439 (CRVAD)


Authors' Addresses:

   Nina V. Kharchenko
   Main Astronomical Observatory NAS of Ukraine
   27 Academica Zabolotnogo St.
   03680 Kiev Ukraine
    e-mail:  nkhar@mao.kiev.ua

   Anatoly E. Piskunov
   Institute of Astronomy of the Russian Acad. Sci.
   48 Pyatnitskaya St.
   119017 Moscow Russia
    e-mail:  piskunov@inasan.rssi.ru

   R.-D. Scholz
   Astrophysikalisches Institut Potsdam
   An der Sternwarte 16
   D-14482 Potsdam Germany
    e-mail: rdscholz@aip.de

================================================================================
(End)      Nina V. Kharchenko [Kiev], Anatoly E. Piskunov [INASAN]   08-Jun-2004


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