Access to Astronomical Catalogues

Search catalogue
obsoleted
in preparation
catalog without ftp or VizieR link
V/117A     Geneva-Copenhagen Survey of Solar neighbourhood   (Holmberg+, 2007)

The Geneva-Copenhagen survey of the Solar neighbourhood. I. Ages, metallicities, and kinematic properties of ∼14000 F and G dwarfs. Nordstrom B., Mayor M., Andersen J., Holmberg J., Pont F., Jorgensen B.R., Olsen E.H., Udry S., Mowlavi N. <Astron. Astrophys. 419, 989 (2004)> =2004A&A...418..989N II. New uvby calibrations and rediscussion of stellar ages, the G dwarf problem, age-metallicity diagram, and heating mechanisms of the disk. Holmberg J., Nordstroem B., Andersen J. <Astron. Astrophys. 475, 519 (2007)> =2007A&A...475..519H
ADC_Keywords: Stars, F-type; Stars, G-type; Abundances, [Fe/H] ; Positional data ; Photometry, uvby; Radial velocities ; Stars, ages ; Stars, distances ; Stars, masses; Space velocities ; Effective temperatures Keywords: Galaxy: disk - Galaxy: solar neighbourhood - Galaxy: stellar content Galaxy: kinematics and dynamics - Galaxy: evolution - Stars: fundamental parameters Abstract (from paper II, 2007) Ages, metallicities, space velocities, and Galactic orbits of stars in the Solar neighbourhood are fundamental observational constraints on models of galactic disk evolution. Understanding and minimising systematic errors and sample selection biases in the data is crucial for their interpretation. We aim to consolidate the calibrations of uvbyb photometry into Teff, [Fe/H], distance, and age for F and G stars and rediscuss the results of the Geneva-Copenhagen Survey (GCS, Nordstrom et al., 2004, paper I) in terms of the evolution of the disk. We use recent V-K photometry, angular diameters, high-resolution spectroscopy, Hipparcos parallaxes, and extensive numerical simulations to re-examine and verify the temperature, metallicity, distance, and reddening calibrations for the uvbyb system. We also highlight the selection effects inherent in the apparent-magnitude limited GCS sample. We substantially improve the Teff and [Fe/H] calibrations for early F stars, where spectroscopic temperatures have large systematic errors. A slight offset of the GCS photometry and the non-standard helium abundance of the Hyades invalidate its use for checking metallicity or age scales; however, the distances, reddenings, metallicities, and age scale for GCS field stars require minor corrections only. Our recomputed ages are in excellent agreement with the independent determinations by Takeda et al. (2007ApJS..168..297T), indicating that isochrone ages can now be reliably determined. The revised G-dwarf metallicity distribution remains incompatible with closed-box models, and the age-metallicity relation for the thin disk remains almost flat, with large and real scatter at all ages sigma_intrinsic=0.20 dex). Dynamical heating of the thin disk continues throughout its life; specific in-plane dynamical effects dominate the evolution of the U and V velocities, while the W velocities remain random at all ages. When assigning thick and thin-disk membership for stars from kinematic criteria, parameters for the oldest stars should be used to characterise the thin disk. Abstract (from Paper I, 2004): We present and discuss new determinations of metallicity, rotation, age, kinematics and Galactic orbits for a complete, magnitude-limited, and kinematically unbiased sample of 16682 nearby F and G dwarf stars. Our ∼63000 new, accurate radial-velocity observations for nearly 13500 stars allow identification of most of the binary stars in the sample, and together with published uvby-β photometry, Hipparcos parallaxes, Tycho-2 proper motions, and a few earlier radial velocities, complete the kinematic information for 14139 stars. These high-quality velocity data are supplemented by effective temperatures and metallicities newly derived from recent and/or revised calibrations. The remaining stars either lack Hipparcos data or have fast rotation. A major effort has been devoted to the determination of new isochrone ages for all stars for which this is possible. Particular attention has been given to a realistic treatment of statistical biases and error estimates, as standard techniques tend to underestimate these effects and introduce spurious features in the age distributions. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file newcat.dat 96 16682 Main catalogue recalibrated data (2007) table1.dat 287 16682 First version of the catalog (2004) table2.dat 23 510 Mass ratios for doubled-lined binaries (2004)
See also: J/A+A/329/943 : F + G solar neighbourhood stars new ages (Ng+ 1998) J/A+A/377/911 : Age-metallicity relation in solar neighbourhood (Feltzing+, 2001) J/A+A/394/927 : Age-metallicity relation for nearby stars (Ibukiyama+, 2002) J/MNRAS/325/1365 : Solar neighbourhood metallicity distribution (Haywood+ 2001) Byte-by-byte Description of file: newcat.dat
Bytes Format Units Label Explanations
1- 6 I6 -- HIP ? Hipparcos number if available 8- 18 A11 -- Name Object name (HD,BD,CD or CP) (1) 20- 23 A4 -- Comp Components included in photometry (2) 25- 26 I2 h RAh Right ascension (ICRF) 28- 29 I2 min RAm Right ascension (ICRF) 31- 34 F4.1 s RAs Right ascension (ICRF) 36 A1 -- DE- Declination sign (ICRF) 37- 38 I2 deg DEd Declination (ICRF) 40- 41 I2 arcmin DEm Declination (ICRF) 43- 44 I2 arcsec DEs Declination (ICRF) 46- 50 F5.3 [K] logTe ? Effective temperature 52- 56 F5.2 [Sun] [Fe/H] ? Metallicity 58- 60 I3 pc Dist ? Distance 62- 66 F5.2 mag VMAG ? Absolute magnitude 68- 71 F4.1 Gyr Age ? Age, in Gigayears 73- 76 F4.1 Gyr clAge ? Lower confidence limit on Age 78- 81 F4.1 Gyr chAge ? Upper confidence limit on Age 83- 86 I4 km/s UVel ? Heliocentric space velocity component U (3) 88- 91 I4 km/s VVel ? Heliocentric space velocity component V (3) 93- 96 I4 km/s WVel ? Heliocentric space velocity component W (3)
Note (1): Object name given in order of preference. A second number following a slash indicates that a double star with separate HD numbers has been observed together. Note (2): If the star is a member of a multiple system the component(s) included in the photometry are identified here. Note (3): Heliocentric space velocity components given in a right handed coordinate system with U towards the galactic centre.
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 -- HIP ? Hipparcos number if available 8- 18 A11 -- Name Object name (HD,BD,CD or CP) (1) 20- 23 A4 -- Comp Components included in photometry (2) 25 A1 -- fb Flag for binaries of all types (3) 27 A1 -- fs Flag for cool dwarfs south of -26deg 29- 30 I2 h RAh Right ascension (J2000.0) (4) 32- 33 I2 min RAm Right ascension (J2000.0) (4) 35- 38 F4.1 s RAs Right ascension (J2000.0) (4) 40 A1 -- DE- Declination sign (J2000.0) (4) 41- 42 I2 deg DEd Declination (J2000.0) (4) 44- 45 I2 arcmin DEm Declination (J2000.0) (4) 47- 48 I2 arcsec DEs Declination (J2000.0) (4) 50- 52 I3 deg GLON Galactic longitude 54- 56 I3 deg GLAT Galactic latitude 58- 63 F6.3 mag Vmag Johnson V magnitude 65- 69 F5.3 mag b-y Stromgren b-y colour 71- 75 F5.3 mag Hbeta ? Stromgren Hbeta index 77- 82 F6.3 mag E(b-y) ? Colour excess (5) 84- 88 F5.3 [K] logTe ? Effective temperature (6) 90- 94 F5.2 [Sun] [Fe/H] ? Metallicity (7) 96- 98 I3 pc Dist ? Distance (8) 100-104 F5.2 mag VMAG ? Absolute magnitude 106-110 F5.2 mag dVMag ? Magnitude difference to ZAMS 112 A1 -- fr Source for the distance (8) 114 A1 -- fg Flag for suspected giants (9) 116-119 F4.1 Gyr Age ? Age, in Gigayears 121-124 F4.1 Gyr clAge ? Lower confidence limit on Age 126-129 F4.1 Gyr chAge ? Upper confidence limit on Age 131-134 F4.2 solMass mass ? Mass, in solar masses 136-139 F4.2 solMass clmass ? Lower confidence limit on mass 141-144 F4.2 solMass chmass ? Upper confidence limit on mass 146-156 A11 -- --- Object name (HD,BD,CD or CP) repeated 158-163 F6.1 km/s RVel ? Mean radial velocity (10) 165-168 F4.1 km/s meRVel ? Mean error of radial velocity 170-174 F5.1 km/s e_RVel ? Standard deviation of RVel measurements 176-178 I3 -- o_RVel ? Number of RVel measurements 180-183 I4 d dT ? Time-span of RVel measurements 185-189 F5.3 -- P(chi2) ? Probability of constant RVel 191 A1 -- fd Flag for spectroscopic binaries (10) 193 A1 -- fv Source of RVel (11) 195-197 I3 km/s vsini ? Rotational velocity 199-203 I5 mas/a pmRA ? Proper motion in right ascension (4) 205-209 I5 mas/a pmDE ? Proper motion in declination (4) 211-212 I2 mas/a e_pm ? Standard error of total proper motion (4) 214-218 F5.1 mas plx ? Hipparcos parallax 220-223 F4.1 mas e_plx ? Standard error of parallax 225-228 I4 km/s UVel ? Heliocentric space velocity component U (12) 230-233 I4 km/s VVel ? Heliocentric space velocity component V (12) 235-238 I4 km/s WVel ? Heliocentric space velocity component W (12) 240-245 F6.3 kpc Rgal ? Galactic radial position (13) 247-252 F6.3 kpc zgal ? Galactic vertical position (13) 254-260 F7.2 kpc Rmin ? Perigalactic distance 262-268 F7.2 kpc Rmax ? Apogalactic distance 270-274 F5.2 -- ecc ? Eccentricity of galactic orbit 276-282 F7.2 kpc zmax ? Maximum distance from galactic plane 284-287 A4 -- Notes General note (14)
Note (1): Object name given in order of preference. A second number following a slash indicates that a double star with separate HD numbers has been observed together. Note (2): If the star is a member of a multiple system the component(s) included in the photometry are identified here. Note (3): This flag identifies confirmed and suspected binaries. The information can come from one or several sources such as photometry, radial velocity or astrometry. Note (4): From the Tycho-2 catalogue. Note (5): From the calibration of Olsen (1988A&A...189..173O) if E(b-y)≥0.02 and Dist>40pc; otherwise the star is assumed to be unreddened. Note (6): From the calibration of Alonso et al. (1996A&A...313..873A) Note (7): From the calibrations by Schuster & Nissen (1989A&A...221...65S), Edvardsson et al. (1993A&A...275..101E), or the one defined in Sect 4.3 of the present paper. Note (8): Source for the distance: H = Hipparcos parallax, F,G = F or G-star photometric distance. If a Hipparcos distance with relative error below 13% is available, this is used, otherwise a photometric distance is used. Note (9): Flag for suspected giants. Indicates a disagreement between the photometric distance determination and the Hipparcos parallax at the 3 sigma level, suggesting that the star is a giant not detected from the photometry. Note (10): Mean radial velocity. For double lined binaries, the computed systemic velocity is given if so indicated by the fd flag. Note (11): Source of the radial velocity: C: Coravel, presented in the present paper A: CfA from Nordstrom et al. (1997, Cat. J/A+AS/126/21) L: literature from Barbier-Brossat & Figon (2000A&AS..142..217B, Cat. III/213) Note (12): Heliocentric space velocity components given in a right handed coordinate system with U towards the galactic centre. Note (13): With the solar position 8.000kpc from the galactic centre, and 7pc above the plane. Note (14): Global notes: a = Double star with Deltamag<5mag b = Double star with Hipparcos measurement of Deltamag<5mag c = Variable star d = Simbad note e = Olsen (1983A&AS...54...55O) f = Olsen (1979A&AS...37..367O) g = Olsen (1980A&AS...39..205O) h = Olsen (1993A&AS..102...89O) i = Olsen (1994A&AS..104..429O) j = Olsen (1994A&AS..106..257O) k = Abt et al. (1979PASP...91..176A) l = Abt (1984ApJ...285..247A) m = Abt (1986ApJ...309..260A) n = Gray & Garrison (1989ApJS...69..301G) o = Gray (1989AJ.....89.1049G) p = Henry et al. (1996AJ....111..439H)
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 11 A11 -- Name HD number 13- 17 F5.3 -- mratio Mass ratio (1) 19- 23 F5.3 -- e_mratio ? Estimated uncertainty of the mass ratio (1)
Note (1): For spectroscopic binaries with multiple observations containing double correlation peaks, the centre-of-mass velocity and the mass ratio of the binary may be computed by the method of Wilson (1941ApJ....93...29W). If only two observations are available, no uncertainty can be estimated.
Acknowledgements: Johan Holmberg, johan(at)astro.ku.dk Birgitta Nordstrom, birgitta(at)astro.ku.dk
(End) Patricia Bauer [CDS] 30-Sep-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact