HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star

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dc.contributor.authorHeidari, N.
dc.contributor.authorBoisse, I
dc.contributor.authorOrell-Miquel, J.
dc.contributor.authorHebrard, G.
dc.contributor.authorAcuna, L.
dc.contributor.authorHara, N. C.
dc.contributor.authorLillo-Box, J.
dc.contributor.authorEastman, J. D.
dc.contributor.authorArnold, L.
dc.contributor.authorAstudillo-Defru, N.
dc.contributor.authorAdibekyan, V
dc.contributor.authorBieryla, A.
dc.contributor.authorBonfils, X.
dc.contributor.authorBouchy, F.
dc.contributor.authorBarclay, T.
dc.contributor.authorBrasseur, C. E.
dc.contributor.authorBorgniet, S.
dc.contributor.authorBourrier, V
dc.contributor.authorBuchhave, L.
dc.contributor.authorBehmard, A.
dc.contributor.authorBeard, C.
dc.contributor.authorBatalha, N. M.
dc.contributor.authorCourcol, B.
dc.contributor.authorCortes-Zuleta, P.
dc.contributor.authorCollins, K.
dc.contributor.authorCarmona, A.
dc.contributor.authorCrossfield, I. J. M.
dc.contributor.authorChontos, A.
dc.contributor.authorDelfosse, X.
dc.contributor.authorDalal, S.
dc.contributor.authorDeleuil, M.
dc.contributor.authorDemangeon, O. D. S.
dc.contributor.authorDiaz, R. F.
dc.contributor.authorDumusque, X.
dc.contributor.authorDaylan, T.
dc.contributor.authorDragomir, D.
dc.contributor.authorMena, E. Delgado
dc.contributor.authorDressing, C.
dc.contributor.authorDai, F.
dc.contributor.authorDalba, P. A.
dc.contributor.authorEhrenreich, D.
dc.contributor.authorForveille, T.
dc.contributor.authorFulton, B.
dc.contributor.authorFetherolf, T.
dc.contributor.authorGaisne, G.
dc.contributor.authorGiacalone, S.
dc.contributor.authorRiazi, N.
dc.contributor.authorHoyer, S.
dc.contributor.authorHobson, M. J.
dc.contributor.authorHoward, A. W.
dc.contributor.authorHuber, D.
dc.contributor.authorHill, M. L.
dc.contributor.authorHirsch, L. A.
dc.contributor.authorIsaacson, H.
dc.contributor.authorJenkins, J.
dc.contributor.authorKane, S. R.
dc.contributor.authorKiefer, F.
dc.contributor.authorLuque, R.
dc.contributor.authorLatham, D. W.
dc.contributor.authorLubin, J.
dc.contributor.authorLopez, T.
dc.contributor.authorMousis, O.
dc.contributor.authorMoutou, C.
dc.contributor.authorMontagnier, G.
dc.contributor.authorMignon, L.
dc.contributor.authorMayo, A.
dc.contributor.authorMocnik, T.
dc.contributor.authorMurphy, J. M. A.
dc.contributor.authorPalle, E.
dc.contributor.authorPepe, F.
dc.contributor.authorPetigura, E. A.
dc.contributor.authorRey, J.
dc.contributor.authorRicker, G.
dc.contributor.authorRobertson, P.
dc.contributor.authorRoy, A.
dc.contributor.authorRubenzahl, R. A.
dc.contributor.authorRosenthal, L. J.
dc.contributor.authorSanterne, A.
dc.contributor.authorSantos, N. C.
dc.contributor.authorSousa, S. G.
dc.contributor.authorStassun, K. G.
dc.contributor.authorStalport, M.
dc.contributor.authorScarsdale, N.
dc.contributor.authorStrom, P. A.
dc.contributor.authorSeager, S.
dc.contributor.authorSegransan, D.
dc.contributor.authorTenenbaum, P.
dc.contributor.authorTronsgaard, R.
dc.contributor.authorUdry, S.
dc.contributor.authorVanderspek, R.
dc.contributor.authorVakili, F.
dc.contributor.authorWinn, J.
dc.contributor.authorWeiss, L. M.
dc.date.accessioned2025-01-20T21:12:34Z
dc.date.available2025-01-20T21:12:34Z
dc.date.issued2022
dc.description.abstractWe present the discovery and characterization of a transiting sub-Neptune that orbits the nearby (28 pc) and bright (V = 8.37) K0V star HD 207897 (TOI-1611) with a 16.20-day period. This discovery is based on photometric measurements from the Transiting Exoplanet Survey Satellite mission and radial velocity (RV) observations from the SOPHIE, Automated Planet Finder, and HIRES high-precision spectrographs. We used EXOFASTv2 to model the parameters of the planet and its host star simultaneously, combining photometric and RV data to determine the planetary system parameters. We show that the planet has a radius of 2.50 +/- 0.08 R-E and a mass of either 14.4 +/- 1.6 M-E or 15.9 +/- 1.6 M-E with nearly equal probability. The two solutions correspond to two possibilities for the stellar activity period. The density accordingly is either 5.1 +/- 0.7 g cm(-3) or 5.5(-0.7)(+0.8) g cm(-3), making it one of the relatively rare dense sub-Neptunes. The existence of this dense planet at only 0.12 AU from its host star is unusual in the currently observed sub-Neptune (2 < R-E < 4) population. The most likely scenario is that this planet has migrated to its current position.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/202141429
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/202141429
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93665
dc.identifier.wosidWOS:000757538000010
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectplanets and satellites: detection
dc.subjectstars: activity
dc.subjectplanets and satellites: individual: HD 207897
dc.subjectplanets and satellites: individual: TOI-1611
dc.subjectplanets and satellites: individual: TIC ID 264678534
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleHD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star
dc.typeartículo
dc.volumen658
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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