The Milky Way and the Local Group (MWLG)
  • Publication
    On the Use of Field RR Lyrae as Galactic Probes. I. The Oosterhoff Dichotomy Based on Fundamental Variables
    We collected a large data set of field RR Lyrae stars (RRLs) by using catalogs already available in the literature and Gaia DR2. We estimated the iron...
  • Publication
    On the Use of Field RR Lyrae as Galactic Probes. II. A New ΔS Calibration to Estimate Their Metallicity
    We performed the largest and most homogeneous spectroscopic survey of field RR Lyraes (RRLs). We secured ≍6300 high-resolution (HR, R ∼ 35,000) spectra for 143...
  • Publication
    On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances
    We provide the largest and most homogeneous sample of α-element (Mg, Ca, Ti) and iron abundances for field RR Lyrae (RRLs; 162 variables) by using high...
  • Publication
    On the Use of Field RR Lyrae as Galactic Probes. V. Optical and Radial Velocity Curve Templates
    We collected the largest spectroscopic catalog of RR Lyrae (RRLs) including ≍20,000 high-, medium-, and low-resolution spectra for ≍10,000 RRLs. We provide the...
  • Publication
    On the Use of Field RR Lyrae As Galactic Probes: IV. New Insights Into and Around the Oosterhoff Dichotomy
    We discuss the largest and most homogeneous spectroscopic data set of field RR Lyrae variables (RRLs) available to date. We estimated abundances using both high...
  • Publication
    On the use of field RR Lyrae as Galactic probes: VII. Light curve templates in the LSST photometric system
    Context. The Vera C. Rubin Observatory will start operations in 2025. During its first two years, too few visits per target per band will be available, meaning...
  • Publication
    On the White Dwarf Cooling Sequence of the Globular Cluster ω Centauri
    We present deep and precise photometry (F435W, F625W, F658N) of ω Cen collected with the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope...
  • Publication
    On the ΔV bump HB Parameter in Globular Clusters
    We present new empirical estimates of the ΔV bump HB parameter for 15 Galactic globular clusters (GGCs) using accurate and homogeneous ground-based optical data...
  • Publication
    Ondřejov Echelle Spectrograph, Ground Based Support Facility for Exoplanet Missions
    Fulfilling the goals of space-based exoplanetary transit surveys, like Kepler and TESS, is impossible without ground-based spectroscopic follow-up. In...