VizieR Online Data Catalog: SB updated census in SACY sample (Zuniga-Fernandez+, 2021)

We obtained spectra taken with the Ultraviolet and Visual Echelle Spectrograph (UVES; λ/{DELTA}λ~40000 with a 1" slit) in Paranal, Chile. These observations came from three of our observing campaigns, taken between 2015 and 2016. We also added data retrieved from the ESO phase 3 public archive.

We present an update for the SB census for the associations within SACY. Our study is based on new observational data (as well as literature and archival data), as well as new criteria to identify these tight binaries. We have estimated radial and rotational velocity for 1375 spectra using CCFs and compiled 400 RV measurements from the literature (including Gaia DR2, Gaia Collaboration et al. 2018, Cat. I/345). Our RVs and vsini estimates are in good agreement with previously published values, following a 1:1 relation with values from the literature (for targets that are not identified as a multiple systems), demonstrating that our CCF analysis is robust. Further robustness is provided by the fact that we have recovered the 84⁺¹¹_-8% of previously known multiple systems.

(3 data files).