J/AJ/119/2866 Proper motions of metal-poor stars (Beers+, 2000)
Kinematics of metal-poor stars in the Galaxy.
II. Proper motions for a large non-kinematically selected sample.
Beers T.C., Chiba M., Yoshii Y., Platais I., Hanson R.B., Fuchs B., Rossi S.
<Astron. J. 119, 2866 (2000)>
=2000AJ....119.2866B 2000AJ....119.2866B
ADC_Keywords: Stars, metal-deficient ; Positional data ; Radial velocities ;
Abundances ; Proper motions
Keywords: Galaxy: abundances - Galaxy: halo - Galaxy: kinematics and dynamics -
stars: Population II - surveys
Abstract:
We present a revised catalog of 2106 Galactic stars, selected without
kinematic bias and with available radial velocities, distance
estimates, and metal abundances in the range -4.0≤[Fe/H]≤0.0. This
update of the 1995 Beers & Sommer-Larsen catalog (Cat.
J/ApJS/96/175) includes newly derived homogeneous photometric
distance estimates, revised radial velocities for a number of stars
with recently obtained high-resolution spectra, and refined
metallicities for stars originally identified in the HK
objective-prism survey (which account for nearly half of the catalog)
based on a recent recalibration. A subset of 1258 stars in this
catalog have available proper motions based on measurements obtained
with the Hipparcos astrometry satellite or taken from the updated
Astrographic Catalogue (second epoch positions from either the Hubble
Space Telescope Guide Star Catalog or the Tycho Catalogue), the
Yale/San Juan Southern Proper Motion Catalog 2.0, and the Lick
Northern Proper Motion Catalog. Our present catalog includes 388
RR Lyrae variables (182 of which are newly added), 38 variables of
other types, and 1680 nonvariables, with distances in the range 0.1 to
40kpc.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 126 2106 Positions, abundances, radial velocities,
and photometry
table3.dat 150 2106 Distance estimates and measured proper motions
table4.dat 133 1256 Space motions and orbital parameters
refs.dat 155 26 References
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See also:
J/ApJS/96/175 : Kinematics of Metal-Poor Stars. I. (Beers+ 1995)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star name
24- 25 I2 h RAh Right Ascension (J2000)
27- 28 I2 min RAm Right Ascension (J2000)
30- 34 F5.2 s RAs [0,60] Right Ascension (J2000)
36 A1 --- DE- Sign of the Declination (J2000)
37- 38 I2 deg DEd Declination (J2000)
40- 41 I2 arcmin DEm Declination (J2000)
43- 46 F4.1 arcsec DEs [0,60] Declination (J2000)
47 A1 --- u_DEs [tv] Uncertainty flag on position (1)
50- 53 A4 --- r_RAh Positional reference (in refs.dat file)
58- 62 F5.2 [Sun] [Fe/H] Log of the iron to hydrogen abundance
relative to Sun
63 A1 --- u_[Fe/H] Uncertain [Fe/H] measurement flag
66- 69 A4 --- r_[Fe/H] The [Fe/H] reference (in refs.dat file)
72- 76 I5 km/s RVel Heliocentric Radial velocity
80- 81 I2 km/s e_RVel Uncertainty in RVel
84- 87 A4 --- r_RVel Radial velocity reference (in refs.dat file)
91 A1 --- n_Vmag [ep] Estimated value (2)
93- 97 F5.2 mag Vmag ? The V band magnitude
100 A1 --- n_(B-V) [ep] Estimated value (2)
101-105 F5.2 mag (B-V) ? The B-V color
108-111 A4 --- r_Vmag Photometry reference (in refs.dat file)
114-117 F4.2 mag E(B-V) ? The B-V reddening
120-125 A6 --- Type Classification type (3)
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Note (1): v = rather uncertain ; t = uncertain
Note (2): Flags for estimated values:
e = estimated value (see text for further details)
p = estimated value from intensity of spectrum on original prism plate
Note (3): Classification type as follows:
D = main-sequence dwarf star
A = main-sequence A-type star
TO = main-sequence turnoff star
SG = subgiant star
G = giant star
AGB = asymptotic giant branch star
FHB = field horizontal-branch star
V = variable stars other than the RR Lyrae type
RRV = RR Lyrae
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star name
23- 28 F6.3 kpc Dpho ? Photometric distance
30- 34 F5.3 kpc Dpho2 ? Alternative distance
40 A1 --- l_DHIP Limit flag on DHIP
41- 47 F7.3 kpc DHIP ? Distance from HIPPARCOS
49- 55 F7.3 --- e_DHIP ? Relative HIPPARCOS precision
(σπ/π)
59- 64 F6.3 kpc DBSL ? Distance from the BSL catalog
67- 72 F6.3 kpc Dadopt ? Adopted heliocentric distance
75- 82 F8.2 mas/yr pmRA ? Adopted proper motion in RA
85- 91 F7.2 mas/yr pmDE ? Adopted proper motion in Dec
94- 98 F5.2 mas/yr e_pmRA ? Uncertainty in pmRA
100-104 F5.2 mas/yr e_pmDE ? Uncertainty in pmDE
106-125 A20 --- r_pmRA Comma-separated reference(s) for the
proper motion (in refs.dat file)
131-150 A20 --- Text Comments on star
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star name
25- 29 F5.2 [Sun] [Fe/H] Log iron to hydrogen abundance relative to solar
adopted from table 1a
32- 36 F5.2 kpc R Meridional plane radius (assuming Rsun=8.5kpc)
40- 45 F6.2 kpc Z Meridional scale height
50- 53 I4 km/s Uvel Velocity directed to the Galactic anticenter (1)
56- 59 I4 km/s Vvel Velocity directed in the rotational direction (1)
62- 65 I4 km/s Wvel Velocity directed to the north pole (1)
68- 71 I4 km/s VR Radial velocity in the cylindrical rest frame (2)
74- 77 I4 km/s Vtheta Theta velocity in the cylindrical rest frame (2)
81- 86 F6.2 kpc Rap ? Estimated apogalactic distance
91- 95 F5.2 kpc Rpr ? Estimated perigalactic distance
99-104 F6.2 kpc Zmax ? Maximum distance explored by star in the
course of its orbital motion
109-113 F5.2 --- e ? Eccentricity of the orbit (3)
116-127 A12 --- Text Comments on star
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Note (1): corrected for the solar motion (Usun,Vsun,Wsun)=(-9,12,7) km/s
with respect to the local standard of rest.
Note (2): assuming VLSR = 220 km/s.
Note (3): e = (Rap-Rpr)/(Rap+Rpr)
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Ref Reference code
5- 23 A19 --- BibCode BibCode
25- 54 A30 --- Aut Authors
57-155 A99 --- Com Comments
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History: From AJ electronic version
(End) Greg Schwartz [AAS], Patricia Bauer [CDS] 29-Aug-2000