VizieR Online Data Catalog: Rotation periods for 107 M dwarfs from APACHE (Giacobbe+, 2020)

APACHE employs an array of five 40-cm telescopes hosted on a single platform with a roll-off enclosure, located at the Astronomical Observatory of the Aosta Valley (OAVdA), in the western Italians Alps, at 1650 meters above the sea level. The telescope array is composed of five identical Carbon Truss 40-cm f/8.4 Ritchey-Chretien telescopes, with a GM2000 10-MICRON mount and equipped with a FLI Proline PL1001E-2 CCD Camera and Johnson-Cousins V & I filters.

We adopted for APACHE an observing strategy consisting of 3 consecutive exposures every 20min. In this way, during a typical night of observation, each telescope observes ~12 fields, where the grater part of them contain only a single target M dwarf. Each target is observed for the whole time available during the night with airmass below 2. Exposure times are selected to yield a signal-to-noise ratio (SNR) for the target star >200 while avoiding detector saturation.

The data considered in this paper are the results of 5yr of observation between 9th July 2012 and 9th July 2017. This period corresponds to the nominal duration of the survey. From the APACHE observations database, we select a sub-sample of 247 M dwarfs with more than 200 data points taken on at least 10 observation nights and spanning at least 30d.

(2 data files).