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Uncovering the true periods of the young sub-Neptunes orbiting TOI-2076
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dc.contributor.author | Osborn, H. P. | |
dc.contributor.author | Bonfanti, A. | |
dc.contributor.author | Gandolfi, D. | |
dc.contributor.author | Hedges, C. | |
dc.contributor.author | Leleu, A. | |
dc.contributor.author | Fortier, A. | |
dc.contributor.author | Futyan, D. | |
dc.contributor.author | Gutermann, P. | |
dc.contributor.author | Maxted, P. F.L. | |
dc.contributor.author | Borsato, L. | |
dc.contributor.author | Collins, K. A. | |
dc.contributor.author | Da Silva, J. Gomes | |
dc.contributor.author | Chew, Y. Gomez Maqueo | |
dc.contributor.author | Hooton, M. J. | |
dc.contributor.author | Lendl, M. | |
dc.contributor.author | Parviainen, H. | |
dc.contributor.author | Salmon, S. | |
dc.contributor.author | Schanche, N. | |
dc.contributor.author | Serrano, L. M. | |
dc.contributor.author | Sousa, S. G. | |
dc.contributor.author | Tuson, A. | |
dc.contributor.author | Ulmer-Moll, S. | |
dc.contributor.author | Van Grootel, V. | |
dc.contributor.author | Wells, R. D. | |
dc.contributor.author | Wilson, T. G. | |
dc.contributor.author | Alibert, Y. | |
dc.contributor.author | Alonso, R. | |
dc.contributor.author | Anglada, G. | |
dc.contributor.author | Asquier, J. | |
dc.contributor.author | Barrado Y Navascues, D. | |
dc.contributor.author | Baumjohann, W. | |
dc.contributor.author | Beck, T. | |
dc.contributor.author | Benz, W. | |
dc.contributor.author | Biondi, F. | |
dc.contributor.author | Bonfils, X. | |
dc.contributor.author | Bouchy, F. | |
dc.contributor.author | Brandeker, A. | |
dc.contributor.author | Broeg, C. | |
dc.contributor.author | Barczy, T. | |
dc.contributor.author | Barros, S. C.C. | |
dc.contributor.author | Cabrera, J. | |
dc.contributor.author | Charnoz, S. | |
dc.contributor.author | Cameron, A. Collier | |
dc.contributor.author | Csizmadia, S. | |
dc.contributor.author | Davies, M. B. | |
dc.contributor.author | Deleuil, M. | |
dc.contributor.author | Delrez, L. | |
dc.contributor.author | Demory, B. O. | |
dc.contributor.author | Ehrenreich, D. | |
dc.contributor.author | Erikson, A. | |
dc.contributor.author | Fossati, L. | |
dc.contributor.author | Fridlund, M. | |
dc.contributor.author | Gillon, M. | |
dc.contributor.author | Gomez-Munoz, M. A. | |
dc.contributor.author | Gudel, M. | |
dc.contributor.author | Heng, K. | |
dc.contributor.author | Hoyer, S. | |
dc.contributor.author | Isaak, K. G. | |
dc.contributor.author | Kiss, L. | |
dc.contributor.author | Laskar, J. | |
dc.contributor.author | Des Etangs, A. Lecavelier | |
dc.contributor.author | Lovis, C. | |
dc.contributor.author | Magrin, D. | |
dc.contributor.author | Malavolta, L. | |
dc.contributor.author | McCormac, J. | |
dc.contributor.author | Nascimbeni, V. | |
dc.contributor.author | Olofsson, G. | |
dc.contributor.author | Ottensamer, R. | |
dc.contributor.author | Pagano, I. | |
dc.contributor.author | Palle, E. | |
dc.contributor.author | Peter, G. | |
dc.contributor.author | Piazza, D. | |
dc.contributor.author | Piotto, G. | |
dc.contributor.author | Pollacco, D. | |
dc.contributor.author | Queloz, D. | |
dc.contributor.author | Ragazzoni, R. | |
dc.contributor.author | Rando, N. | |
dc.contributor.author | Rauer, H. | |
dc.contributor.author | Reimers, C. | |
dc.contributor.author | Ribas, I. | |
dc.contributor.author | Demangeon, O. D.S. | |
dc.contributor.author | Smith, A. M.S. | |
dc.contributor.author | Sabin, L. | |
dc.contributor.author | Santos, N. | |
dc.contributor.author | Scandariato, G. | |
dc.contributor.author | Schroffenegger, U. | |
dc.contributor.author | Schwarz, R. P. | |
dc.contributor.author | Shporer, A. | |
dc.contributor.author | Simon, A. E. | |
dc.contributor.author | Steller, M. | |
dc.contributor.author | Szabo, G. M. | |
dc.contributor.author | Segransan, D. | |
dc.contributor.author | Thomas, N. | |
dc.contributor.author | Udry, S. | |
dc.contributor.author | Walter, I. | |
dc.contributor.author | Walton, N. | |
dc.date.accessioned | 2022-11-30T13:30:04Z | |
dc.date.available | 2022-11-30T13:30:04Z | |
dc.date.issued | 2022-08-25 | |
dc.identifier | 282287245 | |
dc.identifier | aca2ec66-9a84-4555-9e08-50ec8f2f26f6 | |
dc.identifier | 85141293670 | |
dc.identifier | 000844280100005 | |
dc.identifier.citation | Osborn , H P , Bonfanti , A , Gandolfi , D , Hedges , C , Leleu , A , Fortier , A , Futyan , D , Gutermann , P , Maxted , P F L , Borsato , L , Collins , K A , Da Silva , J G , Chew , Y G M , Hooton , M J , Lendl , M , Parviainen , H , Salmon , S , Schanche , N , Serrano , L M , Sousa , S G , Tuson , A , Ulmer-Moll , S , Van Grootel , V , Wells , R D , Wilson , T G , Alibert , Y , Alonso , R , Anglada , G , Asquier , J , Barrado Y Navascues , D , Baumjohann , W , Beck , T , Benz , W , Biondi , F , Bonfils , X , Bouchy , F , Brandeker , A , Broeg , C , Barczy , T , Barros , S C C , Cabrera , J , Charnoz , S , Cameron , A C , Csizmadia , S , Davies , M B , Deleuil , M , Delrez , L , Demory , B O , Ehrenreich , D , Erikson , A , Fossati , L , Fridlund , M , Gillon , M , Gomez-Munoz , M A , Gudel , M , Heng , K , Hoyer , S , Isaak , K G , Kiss , L , Laskar , J , Des Etangs , A L , Lovis , C , Magrin , D , Malavolta , L , McCormac , J , Nascimbeni , V , Olofsson , G , Ottensamer , R , Pagano , I , Palle , E , Peter , G , Piazza , D , Piotto , G , Pollacco , D , Queloz , D , Ragazzoni , R , Rando , N , Rauer , H , Reimers , C , Ribas , I , Demangeon , O D S , Smith , A M S , Sabin , L , Santos , N , Scandariato , G , Schroffenegger , U , Schwarz , R P , Shporer , A , Simon , A E , Steller , M , Szabo , G M , Segransan , D , Thomas , N , Udry , S , Walter , I & Walton , N 2022 , ' Uncovering the true periods of the young sub-Neptunes orbiting TOI-2076 ' , Astronomy and Astrophysics , vol. 664 , A156 . https://doi.org/10.1051/0004-6361/202243065 | en |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | RIS: urn:171317E25E4A670D96507EE36521BDC9 | |
dc.identifier.other | ORCID: /0000-0002-8863-7828/work/123614143 | |
dc.identifier.other | ORCID: /0000-0001-8749-1962/work/123614256 | |
dc.identifier.uri | https://hdl.handle.net/10023/26519 | |
dc.description | Funding: ACC and TGW acknowledge support from STFC consolidated grant numbers ST/R000824/1 and ST/V000861/1, and UKSA grant ST/R003203/1. | en |
dc.description.abstract | Context. TOI-2076 is a transiting three-planet system of sub-Neptunes orbiting a bright (G = 8.9 mag), young (340 ±80 Myr) K-type star. Although a validated planetary system, the orbits of the two outer planets were unconstrained as only two non-consecutive transits were seen in TESS photometry. This left 11 and 7 possible period aliases for each. Aims. To reveal the true orbits of these two long-period planets, precise photometry targeted on the highest-probability period aliases is required. Long-term monitoring of transits in multi-planet systems can also help constrain planetary masses through TTV measurements. Methods. We used the MonoTools package to determine which aliases to follow, and then performed space-based and ground-based photometric follow-up of TOI-2076 c and d with CHEOPS, SAINT-EX, and LCO telescopes. Results. CHEOPS observations revealed a clear detection for TOI-2076 c at P = 21.01538+0.00084 -0.00074 d, and allowed us to rule out three of the most likely period aliases for TOI-2076 d. Ground-based photometry further enabled us to rule out remaining aliases and confirm the P = 35.12537 ±0.00067 d alias. These observations also improved the radius precision of all three sub-Neptunes to 2.518 ±0.036, 3.497 ±0.043, and 3.232 ±0.063 R⊕. Our observations also revealed a clear anti-correlated TTV signal between planets b and c likely caused by their proximity to the 2:1 resonance, while planets c and d appear close to a 5:3 period commensurability, although model degeneracy meant we were unable to retrieve robust TTV masses. Their inflated radii, likely due to extended H-He atmospheres, combined with low insolation makes all three planets excellent candidates for future comparative transmission spectroscopy with JWST. | |
dc.format.extent | 17 | |
dc.format.extent | 4496137 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy and Astrophysics | en |
dc.subject | Planets and satellites: detection | en |
dc.subject | Stars: individual: TOI-2076 | en |
dc.subject | Techniques: photometric | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | Space and Planetary Science | en |
dc.subject | Astronomy and Astrophysics | en |
dc.subject | 3rd-DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Uncovering the true periods of the young sub-Neptunes orbiting TOI-2076 | en |
dc.type | Journal article | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | https://doi.org/10.1051/0004-6361/202243065 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | https://arxiv.org/abs/2203.03194 | en |
dc.identifier.grantnumber | ST/R00824/1 | en |
dc.identifier.grantnumber | ST/R003203/1 | en |
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