VizieR Online Data Catalog: On use of field RR Lyrae as galactic probes. II. (Crestani+, 2021)

We have collected a sample of 6631 spectra for 266 stars (173 RRab, 92 RRc, and 1 RRd) across the pulsation phase from multiple medium and high-resolution spectrographs. The largest and most homogeneous subsample was collected with the echelle spectrograph at du Pont (Las Campanas Observatory) and includes 6070 (R=35000) spectra of 186 RRL (107 RRab, 79 RRc). It typically covers wavelengths from 3600 to 9300Å.

These data were complemented with 530 optical spectra from the ESO Archive. We included spectra from UVES and X-shooter at Very Large Telescope (VLT; Cerro Paranal Observatory), High Accuracy Radial velocity Planet Searcher (HARPS) at the 3.6m telescope (La Silla Observatory), and Fiber-fed Extended Range Optical Spectrograph (FEROS) at the 2.2m telescope (La Silla Observatory). An additional ten spectra were added from HARPS-N at the Telescopio Nazionale Galileo (Roque de Los Muchachos Observatory), along with four from High Resolution Spectrograph (HRS) at South African Astronomical Observatory (SALT), six from the High Dispersion Spectrograph (HDS) at Subaru National Astronomical Observatory of Japan, and eleven from the echelle spectrograph at STELLA.

(6 data files).