-
Metal-poor stars uvby-beta photometry. XI.
New uvby-beta data are provided for 442 high-velocity and metal-poor stars; 90 of these stars have been observed previously by us, and 352 are new. When combined with our... -
Metal-poor star uvby-beta photometry. X.
(uvby) and H-beta photometry has been obtained for an additional 411 very metal-poor stars selected from the HK survey, and used to derive basic parameters such as interstellar... -
High-velocity stars radial velocities
We describe methods for extracting quantitative spectra and astrometric positions from objective prism plates. In particular, we have studied 7161 stars in eight fields along... -
Southern stars of high radial velocity
Slit spectra have been obtained for 82 stars for which the objective-prism radial-velocity catalogue of Stock lists velocities over 130km/s in magnitude. The slit spectra reveal... -
Velocity data for 88 very high velocity stars
We assemble a large sample of 12784 high-velocity stars with total velocity VGSR>~300km/s, selected from RAVE DR5, SDSS DR12, LAMOST DR8, APOGEE DR16, GALAH DR2, and Gaia... -
HST WFC3/UVIS normalized light curve of WASP-43
Optical reflected light eclipse observations provide a direct probe of exoplanet scattering properties, such as from aerosols. We present here the photometric reflected light... -
R-band light curve of Qatar-1
Motivated by the unsettled conclusion on whether there are any transit timing variations (TTVs) for the exoplanet Qatar-1b, 10 new transit light curves are presented and a TTV... -
Radial velocities from Gaia BP/RP spectra
The Gaia mission has provided us full astrometric solutions for over 1.5B sources. However, only the brightest 34M of those have radial velocity measurements. As a proof of... -
New proper motions in 0<RA<7h, -63<DE<-32{deg}
We present the discovery of about 100 new high-proper motion stars in the region between 0^h^ and 7^h^ in right ascension and -63{deg} and -32{deg} in declination, with proper... -
Radial velocities of 107 B8-A0 stars
The observations of radial velocities of B8-A0 stars were produced in 1932-1937 with one-prism spectrograph and short camera giving a dispersion of 75{AA}/mm at H{gamma}. When... -
T4 APT photometry of HD 166620
HD-166620 was recently identified as a Maunder minimum candidate based on nearly 50 years of CaII H and K activity data from Mount Wilson and Keck HIRES. These data showed clear... -
Revised NLTT Catalog
We complete construction of a catalog containing improved astrometry and new optical/infrared photometry for the vast majority of NLTT stars lying in the overlap of regions... -
High-speed stars. II.
The data from the Gaia satellite led us to revise our conception of the Galaxy structure and history. Hitherto unknown components have been discovered and a deep re-thinking of... -
A catalogue of high-velocity stars
RHV catalogue on magnetic tape was prepared in process of compilation of population II stars catalogue on magnetic tape (Pop2) at Astrophysical Department, Insitute of Physics,... -
Depth-of-search & completeness for 213 exoplanets
Identifying which systems are more likely to host an imageable planet can play an important role in the construction of an optimized target list for future direct imaging... -
High-speed stars. Galactic hitchhikers
The search for stars born in the very early stages of the Milky Way star formation history is of paramount importance in the study of the early Universe since their chemistry... -
uvby-beta photometry of metal-poor stars
Using the calibrations derived by Schuster and Nissen (=1989A&A...221...65S), the interstellar color excesses, E(b-y), and the metallicities, [Fe/H], have been determined... -
LSPM-North Catalog
The LSPM catalog is a comprehensive list of 61,977 stars north of the J2000 celestial equator that have proper motions larger than 0.15"/yr (local-background-stars frame). The...
