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M9 RR Lyrae CCD observations
CCD observations have been used to study 16 of the previously known variables in the Oosterhoff type II globular cluster M9. The properties of the RR Lyrae variables in M9 are... -
VELOCE modulation zoo. II.
Line splitting in spectral lines is observed in various types of stars due to phenomena such as shocks, spectroscopic binaries, magnetic fields, spots, and non-radial modes. In... -
Flares in 5 open clusters
Magnetic fields are a key component in the main sequence evolution of low mass stars. Flares, energetic eruptions on the surfaces of stars, are an unmistakable manifestation of... -
LAMOST DR4 New mercury-manganese stars
The present work presents our efforts at identifying new mercury-manganese (HgMn/CP3) stars using spectra obtained with the Large Sky Area Multi-Object Fiber Spectroscopic... -
Physical properties of AM CVn stars
AM CVn binaries are hydrogen deficient compact binaries with an orbital period in the 5-65min range and are predicted to be strong sources of persistent gravitational wave... -
Classification of RR Lyrae and Cepheid
The second data release of the Gaia mission (DR2) includes an advance catalogue of variable stars. The classifications of these stars are based on sparse photometry from the... -
TU UMa light curves and maxima, CL Aur minima
Recent statistical studies prove that the percentage of RR Lyrae pulsators that are located in binaries or multiple stellar systems is considerably lower than might be expected.... -
roAp star alpha Cir blue and red light curves
We report on an analysis of high-precision, multi-colour photometric observations of the rapidly-oscillating Ap (roAp) star alpha Cir. These observations were obtained with the... -
Light curves of spotted solar-type stars
We perform detailed time series analysis for B- and V-band photometry of 21 young and active solar-type stars to study their spot structures, activity cycles, and differential... -
{eta} Car emission spectrum (1700-10400{AA})
We present line identifications in the 1700 to 10400{AA} region for the Weigelt blobs B and D, located 0.1" to 0.3" NNW of {eta} Carinae. The aim of this work is to characterize... -
RR Lyr variable stars in M32
Using archival multi-epoch ACS/WFC images in the F606W and F814W filters of a resolved stellar field in Local Group dwarf elliptical galaxy M 32 we have made an accurate... -
Supervised classification of variable stars
The fast classification of new variable stars is an important step in making them available for further research. Selection of science targets from large databases is much more... -
Solar-like oscillations in alpha Cen B
The K1 dwarf alpha Cen B was observed with the CORALIE spectrograph on the 1.2-m Swiss telescope at La Silla in April 2003. Thirteen nights of observations have made it possible... -
JHKs magnitudes of variables in NGC 5128
The first variable star catalogue in a giant elliptical galaxy NGC 5128 (Centaurus A) is presented. Using multi-epoch observations with ISAAC at the VLT we have detected 1504... -
ISO long period variables in SMC
This article presents the study of the light curves extracted from the MACHO database of a sample of stars observed by the Infrared Space Observatory in the Small Magellanic... -
Light curves of ROTSE-I delta Scuti type stars
We present multi-passband CCD photometry of 20 ROTSE-I {delta} Scuti type pulsating stars and 1 RR Lyrae star to re-classify their variable types using the comparison of... -
ML-Enhanced GCVS: Variable Stars with Gaia DR3 and TESS
This catalog combines photometric and astrometric data from three major sources: the General Catalogue of Variable Stars (GCVS, 2017ARep...61...80S), Gaia DR3, and TESS. It... -
List of Variable objects in the Orion nebula
The Orion Nebula is one of the best-studied star-forming regions in our Galaxy and provides an ideal laboratory to study the early stages of star formation. Understanding the...
