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III/145 Radial Velocities in the Cardinal Directions (Sandage+ 1987)
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U, V, W Velocity Components for the Old Disk Using Radial Velocities of 1295
Stars in the Three Cardinal Directions
Sandage A., Fouts G.
<Astron. Jour. 93, 592, (1987)>
=1987AJ.....93..592S
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ADC_Keywords: Radial velocities
Abstract:
Radial velocities are presented for 430 stars in the direction:
l=180deg., b=0deg., 445 stars in the direction: l=90deg., b=0deg, and
420 stars in the direction: b=90deg. The stars were chosen from the SAO
catalog to be within about 10deg of the respective cardinal directions,
to be brighter than m(pg) about = 10.5, and between spectral classes A5
and K0. Except for the K0 stars, almost all are dwarfs. They were chosen
to present a kinematically unbiased selection, as the intent was to
understand the percentage of stars in each kinematic component of the
galaxy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
u.dat 52 430 Radial velocities for stars within 10deg
of l=0d, b=0d
v.dat 52 445 Radial velocities for stars within 10deg
of l=90d, b=0d
w.dat 52 420 Radial velocities for stars within 10deg
of b=90d
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Byte-by-byte Description of file: u.dat, w.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- cat *SAO or BD zone
4- 8 I5 --- num *Star number
9 A1 --- comp Component
11- 12 I2 h RAh Right ascension (1950) hours
13- 14 I2 min RAm Right ascension (1950) minutes
15- 16 I2 s RAs Right ascension (1950) seconds
18- 19 I2 deg DEd *Declination (1950) degrees
20- 21 I2 arcmin DEm Declination (1950) minutes
22- 23 I2 arcsec DEs Declination (1950) seconds
25- 26 A2 --- Sp Spectral type
28- 31 F4.1 mag v ?Visual Magnitude
33- 36 F4.1 mag b ?Photographic magnitude
38- 43 F6.1 km/s RV Radial Velocity
45- 48 F4.1 km/s e_RV ?Standard deviation of radial velocity
49 A1 --- l-par [ (]Left parenthesis
50- 51 I2 --- o_RV ?Number of measurements of radial velocity
52 A1 --- r-par [ )]Right parenthesis
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Note on cat:
SAO in u.dat and w.dat; the BD zone followed by - in v.dat.
Note on num:
The SAO number in u.dat and w.dat; the BD number in v.dat.
Note on DEd:
All declinations are positive.
Byte-by-byte Description of file: v.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- cat *SAO or BD zone
4- 7 I4 --- num *Star number
8 A1 --- comp *Component
11- 12 I2 h RAh Right ascension (1950) hours
13- 14 I2 min RAm Right ascension (1950) minutes
15- 16 I2 s RAs Right ascension (1950) seconds
18- 19 I2 deg DEd *Declination (1950) degrees
20- 21 I2 arcmin DEm Declination (1950) minutes
22- 23 I2 arcsec DEs Declination (1950) seconds
25- 26 A2 --- Sp Spectral type
28- 31 F4.1 mag v ?Visual Magnitude
33- 36 F4.1 mag b ?Photographic magnitude
38- 43 F6.1 km/s RV Radial Velocity
45- 48 F4.1 km/s e_RV ?Standard deviation of radial velocity
49 A1 --- l-par [ (]Left parenthesis
50- 51 I2 --- o_RV ?Number of measurements of radial velocity
52 A1 --- r-par [ )]Right parenthesis
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Note on cat:
SAO in u.dat and w.dat; the BD zone followed by - in v.dat.
Note on num:
The SAO number in u.dat and w.dat; the BD number in v.dat.
In line 155 (47-3650) the record as it was received is appended by
* 471420. This does not appear in this version or in the printed version.
Note on comp:
For lines 155 and 335, the BD zone was prefixed by NX. This has been
changed to X in the comp column. It apparently is another star near the
BD star numbered.
Note on DEd:
All declinations are positive.
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(End) Nancy G. Roman [ADC/SSDOO] Sep-29-1995