V/8 Space Velocity Catalogue (Eggen 1962)
Space Velocity Catalogue
Eggen, O.J.
<Royal Obs. Bull. No. 51 (1962)>
=1962RGOB...51...79E 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 I/113).
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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog 110 3482 Table 1
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Byte-by-byte Description of file: catalog
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD [1/225300]? HD Cat. III/135 designation
8- 12 I5 --- GC [1/33342]+ GC Cat. I/113 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)
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Note (1): Proper motions are converted to N30 system (Morgan H.R., 1952,
Astron. Papers Amer. Ephemeris 13, see catalog I/80)
Note (2): Radial velocities from the "General Catalogue of Stellar
Radial Velocity", Wilson R.F., 1953 (see catalog III/21)
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
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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