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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…

Astrophysical supplements to the ASCC-2.5. II. Membership probabilities in 520 Galactic open cluster sky areas

Scholz, R. -D.; Piskunov, A. E.; Kharchenko, N. V. +2 more

We present a catalogue (CSOCA ) of stars residing in 520 Galactic open cluster sky areas which is the result of the kinematic (proper motion) and photometric member selection of stars listed in the homogeneous All-sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5). We describe the structure and contents of the catalogue, the selection procedur…

Astrophysical supplements to the ASCC-2.5. I. Radial velocity data

Scholz, R. -D.; Piskunov, A. E.; Kharchenko, N. V.

We present a catalogue of radial velocities of Galactic stars with high precision astrometric data CRVAD which is the result of the cross-identification of star lists from the General Catalog of Average Radial Velocities (GCRV) and from the homogeneous All-sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5). The CRVAD includes accurate J2000 eq…

Analysis of UBV photometry in selected area 133

Karataş, Y.; Bilir, S.; Karaali, S. +1 more

We interpret the de-reddened UBV data for the field SA 133 to deduce the stellar density and metallicity distribution functions. The logarithmic local space density for giants, D^*(0)=6.40, and the agreement of the luminosity function for dwarfs and sub-giants with the one of Hipparcos confirms the empirical method used for their separat…

The close binary system SU Ind

Budding, E.; Zeilik, M.; Rhodes, M. +1 more

Photometric data on the southern mid-F type close eclipsing binary system SU Ind from the Carter Observatory (NZ) were examined, together with a light curve obtained from the Hipparcos Epoch Photometry (HEP) database. The system appears detached, although appreciably evolved from the Zero Age Main Sequence. The HEP period must be accurate for its …