We investigate the properties of pulsating variable stars in two galaxies at the edge or nearby the Local Group: VV 124 and KKr 25, located at ∼1.3 and ∼2 Mpc...
Variable Stars in the Field of the Hydra II Ultra-Faint Dwarf Galaxy
We searched for variable stars in Hydra II, one of the recently discovered ultra-faint dwarf satellites of the Milky Way, using gri time-series obtained with...
Variation in the frequency separations with activity and impact on stellar parameter determination
Frequency separations used to infer global properties of stars through asteroseismology can change depending on the strength and at what epoch of the stellar...
Variation of properties of the quiet photosphere with heliographic latitude.
Spectra of four selected lines (CI 5380.3 Å, MnI 5394.7 Å, FeI 5930.2 Å and SiI 5948.5 Å) have been obtained in the quiet photosphere, at regular intervals...
Variation Of Sunspot Properties Between 1999 And 2011
We study the magnetic field and the umbral intensity of sunspots for the period 1999 to 2011. We analyze full Stokes spectra of 183 spots observed with the...
Variation of the granulation with the solar latitude
Results are presented from a search for variations in solar granulation properties with heliographic latitudes. Photographs taken in the summers of 1985 and...
Variation of the granulation with the solar latitude.
Preliminary results of a search for the variation of the solar granulation properties with the heliographic latitude are presented. Within errors, no changes...