J/BaltA/5/1 Classification of Population II stars (Bartkevicius+, 1996)
Classification of population II stars in the Vilnius photometric system.
I. Methods
Bartkevicius A., Lazauskaite R.
<Baltic Astronomy, 5, 1 (1996)>
=1996BaltA...5....1B 1996BaltA...5....1B
ADC_Keywords: Stars, population II ; Photometry, Vilnius ; Abundances, [Fe/H]
Keywords: photometry - stars: fundamental parameters - stars: population II
Description:
The astrophysical parameters compiled from literature for 809 stars of
different types, mainly Population II stars, are presented. The
results of classification in the Vilnius photometric system for the
same stars are given.
For a description of the Vilnius photometric system, see e.g. GCPD/21
File Summary:
-------------------------------------------------------------------------------
FileName Lrecl Records Explanations
-------------------------------------------------------------------------------
ReadMe 80 . This file
tables.dat 173 827 Astrophysical parameters, intrinsic color indices
(table 6) and results of classification in the
Vilnius system for standard stars (table 8)
notes.dat 225 360 Notes to tables
-------------------------------------------------------------------------------
Byte-by-byte Description of file: tables.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- No [1/827] Running number
4 A1 --- Note [*] note detailed in file "notes.dat"
5- 15 A11 --- Name Identification number (1)
16- 17 A2 --- m_Name Component
19- 23 F5.2 mag (Y-V)0 Intrinsic color index (Y-V)0
25- 29 F5.2 mag E(Y-V) Color excess E(Y-V)
32- 36 F5.2 Sun [Fe/H] ?=99.99 Metallicity [Fe/H] (2)
39- 43 F5.2 mag MV ?=99.99 Absolute magnitude (3)
45- 63 A19 --- SpType Spectral type
65- 77 A13 --- Group Group
78- 82 F5.2 mag (U-P)0 ?=99.99 Intrinsic color index (U-P)0
85- 89 F5.2 mag (P-X)0 ?=99.99 Intrinsic color index (P-X)0
92- 96 F5.2 mag (X-Y)0 Intrinsic color index (X-Y)0
99-103 F5.2 mag (Y-Z)0 Intrinsic color index (Y-Z)0
106-110 F5.2 mag (Z-V)0 Intrinsic color index (Z-V)0
113-117 F5.2 mag (V-S)0 ?=99.99 Intrinsic color index (V-S)0
119-143 A25 --- SpTypef Spectral type (4) (5)
145-149 F5.2 mag (Y-V)0f ?=99.99 intrinsic color index (Y-V)0 (4)
151-155 F5.2 mag E(Y-V)f ?=99.99 color excess E(Y-V) (4)
159-163 F5.2 Sun [Fe/H]f ?=99.99 metallicity [Fe/H] (4)
164-165 A2 --- u_[Fe/H]f [: ] Uncertainty on [Fe/H] (4) (6)
167-171 F5.2 mag MVf ?=99.99 absolute magnitude (4)
172-173 A2 --- u_MVf [: ] Uncertainty on MV (4) (6)
--------------------------------------------------------------------------------
Note (1): Identification number is on code described by Mermilliod
(1978BICDS..14...32M 1978BICDS..14...32M).
Coding of identification numbers is explained in General Photometric
Catalogue of Stars Observed in the Vilnius System (Straizys &
Kazlauskas, 1993BaltA...2....1S 1993BaltA...2....1S).
Note (2): In the case of [Fe/H] derived from high-resolution spectra, the values
are given to two decimal places.
Note (3): In the case of MV calculated from trigonometric parallaxes, the values
are given to two decimal places.
Note (4): Results of classification in the Vilnius system
Note (5): Brackets indicate uncertain spectral type
Note (6): ":" - uncertain, "::"- very uncertain
--------------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
-------------------------------------------------------------------------------
Bytes Format Units Label Explanations
-------------------------------------------------------------------------------
1- 3 I3 --- No Running number from table6.dat
4 A1 --- --- [-]
5- 7 I3 --- No2 ? Last running number when the name is the
same for different running numbers
9- 19 A11 --- Name Identification number as in table6.dat
20- 21 A2 --- m_Name Component
24-225 A202 --- Notes Notes about duplicity, variability,
membership in moving groups (1)
------------------------------------------------------------------------------
Note (1): Abbreviations used:
KAPT: Kapteyn star group (Members of moving groups of stars)
GR1830: Gr 1830 star group (Members of moving groups of stars)
ARCT: Arcturus star group (Members of moving groups of stars)
PUP: sigma Puppis star group (Members of moving groups of stars)
VB: Visual binary
VB?: Suspected visual binary
VB-MD: Population II visual binary, observed separate components
VBP-MD: Population II visual binary with d<10-15arcsec and {DELTA}m>4mag,
both components observed together
VBP: Population I visual binary with d<10-15arcsec and {DELTA}m>4mag,
both components observed together
IDS: Number from Worley C., Douglass G. 1984, The Washington Visual
Double Star Catalogue, 1984.0, See Cat. I/237.
First numeral is the distance between components in arcsec, second
numeral is the difference of magnitudes. When the orbit is given,
the next numeral means the semi-major axis of the VB orbit in
arcsec, number after P is the period in years. (Visual binaries)
SB: Spectroscopic binary
SB?: Suspected SB, P is the period in days, K is the semiamplitude of
the radial velocity curve in km/s.
CPM: Comon proper motion
Var RV: Variable radial velocity
Var RV?: Suspected variable radial velocity
VAR: Variable star, P is the period in days, V, PG and B are the
corresponding magnitudes in maximum and minimum. Data are from
P. N. Kholopov (Ed.), General Catalogue of Variable Stars, 4-th ed.
Cat. II/139
------------------------------------------------------------------------------
Acknowledgements: Roma Lazauskaite
References:
Bartkevicius and Lazauskaite, Paper II. 1997BaltA...6..499B 1997BaltA...6..499B
(End) Patricia Bauer [CDS] 23-Feb-1998