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Bow shocks around runaway stars
Runaway stars with peculiar high velocities can generate stellar bow shocks. Only a few bow shocks show clear radio emission. Our goal is to identify and characterize new... -
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... -
GaiaDR3 Galactic runaway O, Be stars
A relevant fraction of massive stars are runaway stars. These stars move with a significant peculiar velocity with respect to their environment. We aim to discover and... -
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... -
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... -
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... -
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... -
Runaway and walkaway stars from the ONC
Theory predicts that we should find fast, ejected (runaway) stars of all masses around dense, young star-forming regions. N-body simulations show that the number and... -
Correlations in unbound star trajectories
Scattering events with compact objects are expected in the primordial black hole (PBH) cold dark matter (CDM) scenario, due to close encounters between stars and PBHs in the... -
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,... -
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... -
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... -
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... -
uvby-beta photometry of metal-poor stars. VIII.
A catalogue of uvby-{beta} photometry for 87 of the turn-off and subgiant stars from the HK survey of Beers et al. (1992AJ....103.1987B, BPSII) is given. Most of these stars... -
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... -
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... -
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... -
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...
