2902727

Target RA (J2000): 0.32574999332428 and deg Target Dec (J2000): -8.92628955841064 and deg Gaia GMag: 9.82 Programme ID: CH_PR149001 Programme Manager: BRUNO PI of observing programme: Benz Title of programme: SoM - ArielGranulation Abstract: This is a pilot study to characterise stellar granulation in a representative subset of the Ariel Reference Sample. Sulis et al. (2023) showed that granulation has a strong chromatic effect and is able to significantly contaminate observations in the visible channels of the Ariel telescope. Results from CHEOPS photometry will be combined with the spectroscopic information collected by the Ariel Stellar Characterisation working group in order to provide a more detailed picture of stellar granulation in the observed targets constraints to optimise Ariel observing time and input for the development of modelling and data analysis techniques. [truncated! Please see actual data for full text]