VizieR Online Data Catalog: pi Men radial velocity curves (Damasso+, 2020)
Abstract
The observations of pi Men with ESPRESSO (using the instrument in single Unit Telescope mode with a median resolving power R=138000 over the 378.2 and 788.7nm wavelength range) were carried out within one of the sub-programmes of the Guaranteed Time Observations (GTOs), aimed at using the very precise RVs to characterize (i.e. measure masses and bulk densities) transiting planets discovered by TESS and Kepler's second light K2 mission (see Pepe et al. 2020 (A&A, submitted) for a detailed discussion of the ESPRESSO on-sky performance). The pi Men system was observed starting from September 2018, right before the end of the commissioning phase of the instrument, up to March 2019. We collected 275 spectra over 37 nights (multiple and consecutive exposures per night) during a total time span of 201 days. The spectra were acquired with a typical exposure time of 120s, providing a median signal-to-noise ratio S/N=243 per extracted pixel at λ=500nm. In this work we also use previously unreleased spectra from CORALIE to extract additional RVs. The pi Men system was observed with CORALIE from November 1998 to February 2020, during which time 60 spectra with typical exposure times of 300-600s (S/N=82-124 at 550nm) were collected.
Radial velocities extracted from ESPRESSO and CORALIE spectra, and spectroscopic stellar activity diagnostics from ESPRESSO. (2 data files).- Publication:
-
VizieR Online Data Catalog
- Pub Date:
- July 2020
- DOI:
- 10.26093/cds/vizier.36420031
- Bibcode:
- 2020yCat..36420031D
- Keywords:
-
- Stars: double and multiple;
- Exoplanets;
- Radial velocities