Poster Open Access

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

Lacedelli Gaia; Malavolta Luca; Borsato Luca; Piotto Giampaolo; Nardiello Domenico; the HARPS-N team; the CHEOPS team

### Dublin Core Export

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
<dc:creator>Lacedelli Gaia</dc:creator>
<dc:creator>Malavolta Luca</dc:creator>
<dc:creator>Borsato Luca</dc:creator>
<dc:creator>Piotto Giampaolo</dc:creator>
<dc:creator>Nardiello Domenico</dc:creator>
<dc:creator>the HARPS-N team</dc:creator>
<dc:creator>the CHEOPS team</dc:creator>
<dc:date>2021-10-10</dc:date>
<dc:description>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.</dc:description>
<dc:identifier>https://zenodo.org/record/5559862</dc:identifier>
<dc:identifier>10.5281/zenodo.5559862</dc:identifier>
<dc:identifier>oai:zenodo.org:5559862</dc:identifier>
<dc:relation>doi:10.5281/zenodo.5123553</dc:relation>
<dc:relation>doi:10.1093/mnras/staa3728</dc:relation>
<dc:relation>doi:10.5281/zenodo.5559861</dc:relation>
<dc:relation>url:https://zenodo.org/communities/plato2021</dc:relation>
<dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
<dc:subject>Exoplanets</dc:subject>
<dc:subject>Exoplanets Detection And Characterization</dc:subject>
<dc:subject>Transits</dc:subject>
<dc:subject>TOI-561</dc:subject>
<dc:title>CHEOPS, HARPS-N and TESS: a joint effort to characterize the unexpected planetary system around TOI-561</dc:title>
<dc:type>info:eu-repo/semantics/conferencePoster</dc:type>
<dc:type>poster</dc:type>
</oai_dc:dc>

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