III/145 Radial Velocities in the Cardinal Directions (Sandage+ 1987)
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 1987AJ.....93..592S
ADC_Keywords: Radial velocities
Abstract:
Radial velocities are presented for 430 stars in the U direction
(l=0,b=0), 445 stars in the V direction (l=90,b=0) and 420 stars in
the W direction (b=90). 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 10.5mag, 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:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
u.dat 52 430 Radial velocities for stars within 10deg of (0,0)
v.dat 52 445 Radial velocities for stars within 10deg of (90,0)
w.dat 52 420 Radial velocities for stars within 10deg of (0,90)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: u.dat, v.dat, w.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name *Star name
9 A1 --- m_Name 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
17 A1 --- DE- Declination sign
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 Vmag ?Visual Magnitude
33- 36 F4.1 mag Pmag ?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 --- --- [(]Left parenthesis
50- 51 I2 --- o_RV ?Number of measurements of radial velocity
52 A1 --- --- [)]Right parenthesis
--------------------------------------------------------------------------------
Note on Name:
Star is either from SAO (Cat. I/131) when it stars by "SAO",
or from the BD (Cat. I/122) when its stars by a "+".
SAO is used in u.dat and w.dat; and BD in v.dat
--------------------------------------------------------------------------------
History:
* 29-Sep-1995 (Nancy G. Roman, ADC):
Several corrections in the file "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.
-- in 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.
* 16-Mar-2005: all 3 files changed to an identical format.
(End) Nancy G. Roman [ADC/SSDOO] 29-Sep-1995