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The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ∼14 000 F and G dwarfs
Pont, F.; Holmberg, J.; Nordström, B. +6 more
We present and discuss new determinations of metallicity, rotation, age, kinematics, and Galactic orbits for a complete, magnitude-limited, and kinematically unbiased sample of 16 682 nearby F and G dwarf stars. Our ∼63 000 new, accurate radial-velocity observations for nearly 13 500 stars allow identification of most of the binary stars in the sa…
A Large Stellar Evolution Database for Population Synthesis Studies. I. Scaled Solar Models and Isochrones
Salaris, Maurizio; Cassisi, Santi; Pietrinferni, Adriano +1 more
We present a large and updated stellar evolution database for low-, intermediate-, and high-mass stars in a wide metallicity range, suitable for studying Galactic and extragalactic simple and composite stellar populations using population synthesis techniques. The stellar mass range is between ~0.5 and 10 Msolar with a fine mass spacing…
Spectroscopic [Fe/H] for 98 extra-solar planet-host stars. Exploring the probability of planet formation
Santos, N. C.; Mayor, M.; Israelian, G.
We present stellar parameters and metallicities, obtained from a detailed spectroscopic analysis, for a large sample of 98 stars known to be orbited by planetary mass companions (almost all known targets), as well as for a volume-limited sample of 41 stars not known to host any planet. For most of the stars the stellar parameters are revised versi…
The Second US Naval Observatory CCD Astrograph Catalog (UCAC2)
Zacharias, N.; Urban, S. E.; Wycoff, G. L. +4 more
The second US Naval Observatory (USNO) CCD Astrograph Catalog, UCAC2 was released in 2003 July. Positions and proper motions for 48,330,571 sources (mostly stars) are available on 3 CDs, supplemented with Two Micron All Sky Survey photometry for 99.5% of the sources. The catalog covers the sky area from -90° to +40° declination, going up to +52° i…
S4N: A spectroscopic survey of stars in the solar neighborhood. The Nearest 15 pc
Allende Prieto, C.; Lambert, D. L.; Barklem, P. S. +1 more
We report the results of a high-resolution spectroscopic survey of all the stars more luminous than M_V = 6.5 mag within 14.5 pc from the Sun. The Hipparcos catalog's completeness limits guarantee that our survey is comprehensive and free from some of the selection effects in other samples of nearby stars. The resulting spectroscopic database, whi…
Nearby stars of the Galactic disk and halo. III.
Fuhrmann, K.
High-resolution spectroscopic observations of about 150 nearby stars or star systems are presented and discussed. The study of these and another 100 objects of the previous papers of this series implies that the Galaxy became reality 13 or 14 Gyr ago with the implementation of a massive, rotationally-supported population of thick-disk stars. The v…
A Galactic O Star Catalog
Walborn, Nolan R.; Maíz-Apellániz, Jesús; Galué, Héctor Á. +1 more
We have produced a catalog of 378 Galactic O stars with accurate spectral classifications that is complete for V<8 but includes many fainter stars. The catalog provides cross-identifications with other sources; coordinates (obtained in most cases from Tycho-2 data); astrometric distances for 24 of the nearest stars; optical (Tycho-2, Johnson, a…
The local surface density of disc matter mapped by Hipparcos
Flynn, Chris; Holmberg, Johan
We determine the surface density of matter in the disc of the Galaxy at the solar position using K giant stars. The local space density and luminosity function of the giants is determined using parallaxes from the Hipparcos satellite; for more distant giants, observed in a cone at the South Galactic Pole, distances are determined using intermediat…
Disk and Halo Wide Binaries from the Revised Luyten Catalog: Probes of Star Formation and MACHO Dark Matter
Gould, Andrew; Chanamé, Julio
We present a catalog of 1147 candidate common proper motion binaries selected from the revised New Luyten Two-Tenths Catalog (NLTT). Among these, we identify 999 genuine physical pairs using the measured proper-motion difference and the relative positions of each binary's components on a reduced proper motion (RPM) diagram. The RPM positions also …
The distance to the giant elliptical galaxy NGC 5128
Rejkuba, M.
The distance to NGC 5128, the central galaxy of the Centaurus group and the nearest giant elliptical to us, has been determined using two independent distance indicators: the Mira period-luminosity (PL) relation and the luminosity of the tip of the red giant branch (RGB). The data were taken at two different locations in the halo of NGC 5128 with …