LP 890-9 (TOI-4306) light curves and RVs : J/A+A/667/A59

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Authors : Delrez L. orcid , Murray C.A., Pozuelos F.J. (hide) , Murray C.A., Pozuelos F.J. et..al

VizieR DOI : 10.26093/cds/vizier.36670059
Bibcode : 2022A&A...667A..59D (ADS) (Simbad) (Objects)
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CDS Keywords : Stars, double and multiple; Exoplanets; Photometry; Optical; Radial velocities
UAT : Multiple stars, Exoplanets, Photometry, Optical astronomy, Radial velocity

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Inserted into VizieR : 08-Nov-2022
Last modification : 28-Nov-2022

Two temperate super-Earths transiting a nearby late-type M dwarf. (2022)

Keywords : planets and satellites detection - stars: individual: LP 890-9 - stars: individual: TIC 44898913 - stars: individual: TOI-4306 - stars: individual: SPECULOOS-2 - techniques: photometric

Abstract:In the age of JWST, temperate terrestrial exoplanets transiting nearby late-type M dwarfs provide unique opportunities for characterising their atmospheres, as well as searching for biosignature gases. In this context, the benchmark TRAPPIST-1 planetary system has garnered the interest of a broad scientific community. We report here the discovery and validation of two temperate super-Earths transiting LP 890-9 (TOI-4306, SPECULOOS-2), a relatively low-activity nearby (32 pc) M6V star. The inner planet, LP 890-9 b, was first detected by TESS (and identified as TOI-4306.01) based on four sectors of data. Intensive photometric monitoring of the system ...(more)
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Astronomy and Astrophysics policies
TESS PDCSAP photometry + ground-based follow-up transit photometry obtained with SPECULOOS-South, TRAPPIST-South, ExTrA, MuSCAT3 and SAINT-EX. Radial velocities obtained with Subaru/IRD.
Laetitia Delrez, ldelrez(at)uliege.be

                


                

                    

                


                

                    

                


                

                    
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