TOI-1080 b: a temperate, rocky planet orbiting a quiet M4V host

Gómez Maqueo Chew, Y.; Dransfield, G.; Barkaoui, K.; Cadieux, C.; Ducrot, E.; Rackham, B.V.; Timmermans, M.; Burgasser, A.J.; Segura, A.; Stassun, K.G.; Ziegler, C.; Soubkiou, A.; Almenara, J.M.; Demory, B.O.; Gillon, M.; Jenkins, J.M.; Jofré, E.; Khandelwal, A.; Páez, S.; Petrucci, R.; Parc, L.; Pichardo Marcano, M.; Plauchu-Frayn, I.; Schroffenegger, U.; Schwarz, R.; Tan, T.G.; Triaud, A.H.M.J.; Benkhaldoun, Z.; Bonfils, X.; Bouchy, F.; Collins, K.A.; Davoudi, F.; Doyon, R.; Gachaoui, M.; Hooton, M.J.; Jehin, E.; Pozuelos, F.J.; Scott, M.G.; Yalçınkaya, SELÇUK; Zong Lang, F.; Zúñiga-Fernández, S.; De Medeiros, J.R.; González-Hernández, J.I.; Santos, N.C.

doi:10.1093/mnras/stag438

TOI-1080 b: a temperate, rocky planet orbiting a quiet M4V host

Gómez Maqueo Chew Y., Dransfield G., Barkaoui K., Cadieux C., Ducrot E., Rackham B., ...Daha Fazla

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, cilt.548, sa.1, 2026 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 548 Sayı: 1
Basım Tarihi: 2026
Doi Numarası: 10.1093/mnras/stag438
Dergi Adı: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Compendex, INSPEC, zbMATH, Directory of Open Access Journals, Academic Search Ultimate (EBSCO), Technology Collection (ProQuest)
Anahtar Kelimeler: exoplanets, planetary systems, stars: individual: TOI-1080, stars: low-mass, techniques: photometric, techniques: spectroscopic
Ankara Üniversitesi Adresli: Evet

Özet

We present the detection and validation of a small, temper ate tr ansiting exoplanet orbiting T OI-1080 every 3.9652482 (+0 . 0000014 )(-0 . 0000015 )d. The host is a quiet M4V star at 25.6 pc. The planet signal was first detect ed by the Transiting Exoplanet Survey Satellite ( TESS) and validated using TESS and gr ound-based observations. B y fit ting the available light curves, the planet radius is measured to be 1.200 +/- 0.058 R circle plus and its equilibrium temperature of 368 (+12) (-10 ). K. With Near Infra Red Planet Searcher (NIRPS) radial velocities, w e are able to place a 3 sigma upper limit on the mass of TOI-1080 b of 10.7 M- circle plus. Our injection-recovery tests enable us t o discard additional transiting planets in the TOI-1080 system with radii down to 0.9 R- circle plus and periods between 0.5 and 7.7 d, and planets with radii larger than 1.4 R circle plus for periods up to 19 d. We demonstrate that it is highly amenable to characterization of its mass and putative atmosphere. In particular, we find that TOI-1080 b is an e x ceptional targ et for the ong oing JWS T + HS T Rocky Worlds DDT programme, having a priority score that is higher than four out of nine targets currently being inv estigat ed by the pr ogramme. T OI-1080 b can be added to the sample of nearby benchmark planets accessible for detailed study with JWST .