NEID Reveals That the Young Warm Neptune TOI-2076 b Has a Low Obliquity

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dc.contributor.authorFrazier, Robert C.
dc.contributor.authorStefansson, Gudmundur
dc.contributor.authorMahadevan, Suvrath
dc.contributor.authorYee, Samuel W.
dc.contributor.authorCanas, Caleb I.
dc.contributor.authorWinn, Joshua N.
dc.contributor.authorLuhn, Jacob
dc.contributor.authorDai, Fei
dc.contributor.authorDoyle, Lauren
dc.contributor.authorCegla, Heather
dc.contributor.authorKanodia, Shubham
dc.contributor.authorRobertson, Paul
dc.contributor.authorWisniewski, John
dc.contributor.authorBender, Chad F.
dc.contributor.authorDong, Jiayin
dc.contributor.authorGupta, Arvind F.
dc.contributor.authorHalverson, Samuel
dc.contributor.authorHawley, Suzanne
dc.contributor.authorHebb, Leslie
dc.contributor.authorHolcomb, Rae
dc.contributor.authorKowalski, Adam
dc.contributor.authorLibby-Roberts, Jessica
dc.contributor.authorLin, Andrea S. J.
dc.contributor.authorMcElwain, Michael W.
dc.contributor.authorNinan, Joe P.
dc.contributor.authorPetrovich, Cristobal
dc.contributor.authorRoy, Arpita
dc.contributor.authorSchwab, Christian
dc.contributor.authorTerrien, Ryan C.
dc.contributor.authorWright, Jason T.
dc.date.accessioned2025-01-20T20:17:07Z
dc.date.available2025-01-20T20:17:07Z
dc.date.issued2023
dc.description.abstractTOI-2076 b is a sub-Neptune-sized planet (R = 2.39 + 0.10 R-circle plus) that transits a young (204 + 50 MYr) bright (V= 9.2) K-dwarf hosting a system of three transiting planets. Using spectroscopic observations obtained with the NEID spectrograph on the WIYN 3.5 m Telescope, we model the Rossiter-McLaughlin effect of TOI-2076 b, and derive a sky-projected obliquity of lambda = - 3 (-15) (+16) . Using the size of the star (R = 0.775 + 0.015 R-?), and the stellar 16 rotation period (P-rot = 7.27 + 0.23 days), we estimate an obliquity of y =18(-9) (+10) (psi < 34 degrees at 95% confidence), 10 demonstrating that TOI-2076 b is in a well-aligned orbit. Simultaneous diffuser-assisted photometry from the 3.5 m telescope at Apache Point Observatory rules out flares during the transit. TOI-2076 b joins a small but growing sample of young planets in compact multi-planet systems with well-aligned orbits, and is the fourth planet with an age ?300 Myr in a multi-transiting system with an obliquity measurement. The low obliquity of TOI-2076 b and the presence of transit timing variations in the system suggest the TOI-2076 system likely formed via convergent disk migration in an initially well-aligned disk.
dc.fuente.origenWOS
dc.identifier.doi10.3847/2041-8213/acba18
dc.identifier.eissn2041-8213
dc.identifier.issn2041-8205
dc.identifier.urihttps://doi.org/10.3847/2041-8213/acba18
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92376
dc.identifier.wosidWOS:000939861200001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal letters
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleNEID Reveals That the Young Warm Neptune TOI-2076 b Has a Low Obliquity
dc.typeartículo
dc.volumen944
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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