The Value of the Fine Structure Constant Over Cosmological Times
The optical spectra of objects classified as QSOs in the SDSS DR6 are analyzed with the aim of determining the value of the fine structure constant in the past...
The variability characteristics of the OJ 287 database.
The authors present preliminary results of the study of short-term variability of the BL Lac object OJ 287. There is evidence that the variability amplitude of...
The Variable Spectrum of the Yellow Hypergiant rho Cassiopeiae
We have analyzed high-resolution optical spectra of the cool hypergiant rho Cas covering a period 2 years. The aim of this analysis is to check the range of the...
The Variable Star One-shot Project, and its little child: Wikimbad.
The Variable Star One-shot Project (VSOP) aimed at providing to the world-wide stellar community the necessary one-shot spectrum of unstudied variable stars...
The very high redshift component of the OTELO survey
Lyman-α emitters (LAEs) and Lyman-break galaxies (LBGs) stand out among the most used tools to study the galaxy formation in the early universe. Despite they...