Published October 10, 2021 | Version v1
Poster Open

CHEOPS, HARPS-N and TESS: a joint effort to characterize the unexpected planetary system around TOI-561

  • 1. Università degli Studi di Padova, INAF-OAPD
  • 2. INAF-OAPD
  • 3. Laboratoire d'Astrophysique de Marseille


Well-characterized multiplanetary systems offer a unique opportunity for comparative planetology, allowing for investigations of the formation and evolution processes. I will present the analysis of a new multiplanetary system, TOI-561, initially discovered by the TESS mission through photometric observations, and further characterized using high-precision RV data collected with the HARPS-N spectrograph, that allowed us to obtain precise masses for all the four planets in the system, namely an ultra-short period super-Earth and three mini-Neptunes (Lacedelli et al. 2021).  I will show how in this case combining photometric and RV data has been essential to discriminate between various possible architectures, highlighting the importance of combining different techniques to obtain a better characterization of a planetary system. Additional insights on the planetary architecture and internal structure are coming from the ultra-high precision photometry of the CHEOPS satellite (Lacedelli et al., in prep), which additionally stresses the importance of synergies between various techniques and instruments.



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Is documented by
10.1093/mnras/staa3728 (DOI)
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Poster: 10.5281/zenodo.5123553 (DOI)