VizieR Online Data Catalog: TOI-858 A and TOI-858 B RV data (Hagelberg+, 2023)

Radial velocity observations of the two components of the visual binary composed of the stars TOI-858 B and TOI-858 A.

We obtained 22 spectra between 2019 August13 and 2021 January 18 UT with simultaneous FP to monitor the RV of TOI-858 B as it was orbited by TOI-858 B b. The exposure times ranged between 1800 and 1200s, depending on the observing schedule, resulting in an average S/N per pixel of 15 at 5500Å.

For TOI-858 A, we acquired nine CORALIE spectra between 2019 October 17 and 2020 March 12 UT in order to check for additional stars and giant planets in the system. All spectra were taken with simultaneous FP, and nearly all had exposure times of 1800s, while one was set to 1200s. The average S/N per pixel were 19 at 5500Å.

We obtained spectroscopic data of TOI-858 B using the CHIRON spectrograph, a high-resolution fibre-fed spectrograph mounted on the 1.5m telescope at the Cerro Tololo Inter-American Observatory (CTIO) in Chile. We obtained in total seven different spectra between 2019 August 9 and 2019 September 1. For these observations, we used the image slicer mode (resolving power ~80000) and an exposure time of 600s, leading to a relatively low S/N per pixel of ~8-10 at 5500Å and RV uncertainties of 20-40m/s.

(3 data files).