The ultra-hot-Jupiter KELT-16 b: dynamical evolution and atmospheric properties

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dc.contributor.authorMancini, L.
dc.contributor.authorSouthworth, J.
dc.contributor.authorNaponiello, L.
dc.contributor.authorBasturk, O.
dc.contributor.authorBarbato, D.
dc.contributor.authorBiagiotti, F.
dc.contributor.authorBruni, I
dc.contributor.authorCabona, L.
dc.contributor.authorD'Ago, G.
dc.contributor.authorDamasso, M.
dc.contributor.authorErdem, A.
dc.contributor.authorEvans, D.
dc.contributor.authorHenning, Th
dc.contributor.authorOzturk, O.
dc.contributor.authorRicci, D.
dc.contributor.authorSozzetti, A.
dc.contributor.authorTregloan-Reed, J.
dc.contributor.authorYalcinkaya, S.
dc.date.accessioned2025-01-20T21:11:32Z
dc.date.available2025-01-20T21:11:32Z
dc.date.issued2022
dc.description.abstractWe present broad-band photometry of 30 planetary transits of the ultra-hot-Jupiter KELT-16 b, using five medium-class telescopes. The transits were monitored through standard B, V, R, I filters and four were simultaneously observed from different places, for a total of 36 new light curves. We used these new photometric data and those from the TESS space telescope to review the main physical properties of the ICELT-16 planetary system. Our results agree with previous measurements but are more precise. We estimated the mid-transit times for each of these transits and combined them with others from the literature to obtain 69 epochs, with a time baseline extending over more than 4 yr, and searched for transit time variations. We found no evidence for a period change, suggesting a lower limit for orbital decay at 8 Myr, with a lower limit on the reduced tidal quality factor of Q(*)' > (1.9 +/- 0.8) x 10(5) with 95 per cent confidence. We built up an observational, low-resolution transmission spectrum of the planet, finding evidence of the presence of optical absorbers, although with a low significance. Using TESS data, we reconstructed the phase curve finding that KELT-16 b has a phase offset of 25.25 +/- 14.03 degrees E, a day- and night-side brightness temperature of 3190 +/- 61 K and 2668 +/- 56 K, respectively. Finally, we compared the flux ratio of the planet over its star at the TESS and Spitzer wavelengths with theoretical emission spectra, finding evidence of a temperature inversion in the planet's atmosphere, the chemical composition of which is preferably oxygen-rich rather than carbon-rich.
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stab2691
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stab2691
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93626
dc.identifier.wosidWOS:000741326000099
dc.issue.numero1
dc.language.isoen
dc.pagina.final1464
dc.pagina.inicio1447
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectmethods: data analysis
dc.subjecttechniques: photometric
dc.subjectstars: fundamental parameters
dc.subjectstars: individual: KELT-16
dc.subjectplanetary systems
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleThe ultra-hot-Jupiter KELT-16 b: dynamical evolution and atmospheric properties
dc.typeartículo
dc.volumen509
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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