V/8 Space Velocity Catalogue (Eggen 1962) ================================================================================ Space Velocity Catalogue Eggen, O.J. =1962RGOB...51...79E ================================================================================ ADC_Keywords: Space velocities Description: New "post-1900" proper motions have been derived for all of the stars with known radial velocity of quality class A or B that are also contained in the General Catalog (GC, catalog ). The catalog lists the space motion vectors of the 3483 stars for which the differences between the pre- and post-1900 proper motions and the probable error of the combined values are small enough to cause less than about 5 km/s uncertainty in the total space motion based on the best available determinations of the stellar distances. In addition to the weighted means of the pre- and post-1900 proper motion components on the N30 system, the best available values of the radial velocity and the space-velocity vectors (UVW), based on these motions and on an assumed luminosity derived from considerations of all available estimates. Compared to the Table 1 of the publication, note that the following elements are missing: - the 3rd designation of Column I - the spectral classifications of Column III - all annotations of Column VIII: the uncertainty flag related to the distance modulus m-M, and also the annotations about binarity or clustering. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file catalog 110 3482 Table 1 -------------------------------------------------------------------------------- Byte-by-byte Description of file: catalog -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- HD [1/225300]? HD Cat. designation 8- 12 I5 --- GC [1/33342]+ GC Cat. designation 14- 18 F5.2 mag Vmag ? Visual magnitude 19- 23 F5.2 mag B-V ? color index 24- 28 F5.2 mag U-B ? (or (U-B)c) color index 30- 34 I5 10-4s/a pmRA Proper motion in right ascension (1) 36- 40 I5 mas/a pmDE Proper motion in declination (1) 41- 46 F6.1 km/s RVel ? Radial velocity from Wilson's GCRV Cat. (2) 47 A1 --- q_RVel [AB] Quality index on RVel (2) 49- 51 I3 mas/a pe(pm) ? Probable error on proper motions (1) 52- 57 F6.1 km/s Uvel Component of space velocity (3) 58- 63 F6.1 km/s Vvel Component of space velocity (3) 64- 69 F6.1 km/s Wvel Component of space velocity (3) 71- 76 I6 km/s/kpc DUvel Change of Uvel with distance (4) 78- 83 I6 km/s/kpc DVvel Change of Vvel with distance (4) 85- 90 I6 km/s/kpc DWvel Change of Wvel with distance (4) 92- 95 I4 10-3 x Direction cosine of the radial velocity (5) 97-100 I4 10-3 y Direction cosine of the radial velocity (5) 102-105 I4 10-3 z Direction cosine of the radial velocity (5) 106-110 F5.2 mag m-M ? Distance modulus (6) -------------------------------------------------------------------------------- Note (1): Proper motions are converted to N30 system (Morgan H.R., 1952, Astron. Papers Amer. Ephemeris 13, see catalog ) Note (2): Radial velocities from the "General Catalogue of Stellar Radial Velocity", Wilson R.F., 1953 (see catalog ) Note (3): The space velocity components are oriented: Uvel away from the Galactic centre Vvel in the direction of the galactic rotation Vvel in the direction of the North Galactic Pole Note (4): these numbers represent the changes in the values of (Uvel, Vvel, Wvel) caused by an increase of 1kpc in the assumed distance. Note (5): These direction cosines can be computed from the old galactic coordinates l (longitude) and b (latitude) by: x = -cos(b).cos(l) y = cos(b).sin(l) z = sin(b) Note (6): the distance modulus (m-M) is related to the distance r expressed in kpc by: 5.log(r) = (m-M) - 10 -------------------------------------------------------------------------------- History: The catalogue was originally keypunched in November 1972 in K.I.T. computer center. The original version contained a first introduction (52 lines), and one star information laid over 3 cards. It has been transformed into a one-line per star at CDS in 1996; numerous misalignments in the data columns were also corrected in the course of this transformation. ================================================================================ (End) Francois Ochsenbein [CDS] 25-Jun-1996