1,112 datasets found

We present a sample of 386 BL Lacertae candidates identified from 2860deg^2^ of the Sloan Digital Sky Survey (SDSS) spectroscopic database. The candidates are primarily selected...

We investigate the relationship between age and chromospheric activity for 139 M dwarf stars in wide binary systems with white dwarf companions. We present the measured radial...

Useful constraints on the orbits and mass ratios of astrometric binaries in the Hipparcos catalog are derived from the measured proper motion differences of Hipparcos and...

We present new results from a photometric study of the main-sequence stars in M4 (NGC 6121=C1620-264), the closest globular cluster to the Sun. Multifield, multiepoch...

The completeness of USNO-B detections of high proper motion ({mu}>180mas/yr) stars is tested, and the accuracy of its measurements is compared to the revised New Luyten...

The brightest portion of the Orion Nebula has been reimaged with the Hubble Space Telescope in H{alpha}, [N II], and [O III]. Comparison with earlier Wide Field Planetary Camera...

The pulsar velocity distribution provides information about the binary history of pulsar progenitors, as well as the asymmetries of the supernova events in which pulsars are...

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...

The kinematics of 122 red giant and 124 RR Lyrae stars in the solar neighborhood are studied using accurate measurements of their proper motions obtained by the Hipparcos...

Data are given for 205 LTT stars found on 23 areas, covering 25 square degrees each, south of declination -40D and right ascension between 04h 30m and 16h 00m. Four stars...

Data are given for 377 new proper-motion stars with {mu}>=0.15arcsec/yr. The stars 1 to 144 are given in Wroblewski and Torres (1989A&AS...78..231W) Cone search...

Data are given for 104 LTT stars found on 11 areas, covering 25 squares degrees each, south of declination -40deg and right ascension between 00h and 04h30m. Three stars present...

Data are given for 144 new proper-motion stars with {mu}>=0.15arcsec/yr. Cone search capability for table J/A+AS/78/231/table2 (Stars 1/144)

This table presents relative proper motions and positions for 166 Luyten Catalogue stars re-discovered as a result of search for high proper motion stars in the southern...

The kinematic state of the open clusters NGC 1750 and NGC 1758 has been studied using newly determined proper motions for 540 stars in a field of 1.5{deg}x1.5{deg} in the Taurus...

Data are given for 353 LTT stars found on 42 areas, covering 25 square degrees each, with declination between -5{deg} and -30{deg} and right ascension between 0h and 13h 30m....

Relative proper motions of 872 stars in the open cluster M 11 region are reduced using 10 plate pairs taken over time baselines of 16~70 years with the double astrograph...

Absolute proper motions of 48 Hipparcos stars in nine fields distributed over the northern hemisphere are presented. The proper motions have been recently used as part of the...

Data are given for 492 new stars with proper motion larger than 0.15arcsec/year found on 21 areas covering 25 square degrees each. These are located between -5deg and -30deg in...

GPM1 is the first version of the General Compiled Catalogue of Absolute Proper Motions for a sample of HIPPARCOS stars, derived with respect to galaxies within the plan called...