J/BaltA/8/325 Radial velocities of Pop. II stars (Bartkevicius+ 1999)
Radial velocities of Population II Stars
Bartkevicius A., Sperauskas J.
<Baltic Astronomy, 8, 325 (1999)>
=1999BaltA...8..325B 1999BaltA...8..325B
ADC_Keywords: Stars, population II ; Radial velocities
Description:
The Population II radial velocity measurement programme was carried
out in 1988-1993. Metal-deficient stars, components of Population II
visual binaries or common proper motion stars, suspected radial
velocity variables, Hipparcos programme stars are included into the
observation programme. The measurements were made with the
CORAVEL-type photoelectric radial velocity speedometer attached to the
1m reflector at the Mount Maidanak observatory (h=2560m, Uzbekistan).
The average error of a single measurement is about 0.6km/s, but for
the stars as faint as 13mag, or for extreme metal-deficient stars it
drop down to 2.5km/s. 621 measurements for 164 stars are presented.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 164 Weighted mean of radial velocities and other data
table2.dat 43 621 Individual radial velocities
notes.dat 80 95 Notes to table1
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See also:
V/72 : Preliminary cat. of field Pop. II Stars (POP2) (Bartkevicius+, 1993)
J/AJ/108/222 : Pop. II variable stars (Nemec+, 1994)
J/BaltA/5/1 : Classification of Population II stars (Bartkevicius+, 1996)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- Seq Sequential number of star
5- 8 A4 --- Cat Catalog name (1)
9- 18 A10 --- CatNo Catalog number
19 A1 --- Mult Visual binary component code
22- 23 I2 h RAh Right ascension (J2000)
25- 26 I2 min RAm Right ascension (J2000)
28- 29 I2 s RAs Right ascension (J2000)
32 A1 --- DE- Declination sign
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 40 I2 arcsec DEs Declination (J2000)
43- 47 F5.2 mag Vmag ? Johnson's V magnitude
50- 68 A19 --- SpType Spectral type and luminosity class
70- 75 F6.1 km/s Mean radial velocity
79- 81 F3.1 km/s e_ Mean error of mean radial velocity
85- 87 F3.1 km/s E ? Standard deviation (external error) of the
individual radial velocity observations
91- 93 F3.1 --- E/I ? External and internal error ratio
96- 97 I2 --- Nobs Number of observations
100 A1 --- Notes [N] N indicates a note in notes.dat file
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Note (1): Catalog names:
G: Lowell Proper Motion Survey, North (I/79) and South (I/112)
BD: Bonner Durchmusterung, Cat. I/122
HD: Henry Draper Catalogue, Cat. III/135
VA: Van altena, 1966AJ.....71..482V 1966AJ.....71..482V, Cl* Melotte 25 VA NNN in Simbad
GSC: HST Guide Star Catalog, Cat. I/255
HDE: Henry Draper Catalogue Extension, Cat. III/135
LDS: LDS Catalogue, Cat. I/130
PPM: Positions and Proper Motions, North (I/146) and South (I/193)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- Seq Sequential number of star
6- 18 A13 --- Name Star name and visual binary component code
20- 30 F11.3 d JD Julian date
32- 37 F6.1 km/s RV Individual radial velocity
40- 42 F3.1 km/s e_RV Mean error on RV
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number of star
5- 18 A14 --- Name Star name and visual binary component code
20- 80 A61 --- Note Text of the note (1)
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Note (1): Abbreviations used:
RV : radial velocity,
RV0: radial velocity of center of mass of spectroscopic binary (SB),
D : angular separation of double star components in arcsec,
dm : magnitude differences of double star components,
Hp : Hipparcos magnitude Hp differences of double star components, or
amplitude of variation Hp of variable stars (Var),
[HIP] : data from Hipparcos Celestia catalog (Cat. I/239)
CPM : Common Proper Motion pair
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Acknowledgements: A. Bartkevicius , J. Sperauskas
(End) Francois Ochsenbein [CDS] 22-Feb-2000