55 Cancri e’s occultation captured with CHEOPS
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Tartalom: http://hdl.handle.net/10831/112559
Archívum: EDIT
Gyűjtemény: Publikációk
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Cím:
55 Cancri e’s occultation captured with CHEOPS
Létrehozó:
Demory, B.-O.
Sulis, S.
Meier Valdés, E.
Delrez, L.
Brandeker, A.
Billot, N.
Fortier, A.
Hoyer, S.
Sousa, S. G.
Heng, K.
Lendl, M.
Krenn, A.
Morris, B. M.
Patel, J. A.
Alibert, Y.
Alonso, R.
Anglada, G.
Bárczy, T.
Barrado, D.
Barros, S. C. C.
Baumjohann, W.
Beck, M.
Beck, T.
Benz, W.
Bonfils, X.
Broeg, C.
Buder, M.
Cabrera, J.
Charnoz, S.
Collier Cameron, A.
Cottard, H.
Csizmadia, Sz.
Davies, M. B.
Deleuil, M.
Demangeon, O. D. S.
Ehrenreich, D.
Erikson, A.
Fossati, L.
Fridlund, M.
Gandolfi, D.
Gillon, M.
Güdel, M.
Isaak, K. G.
Kiss, L. L.
Laskar, J.
Lecavelier des Etangs, A.
Lovis, C.
Luntzer, A.
Magrin, D.
Marafatto, L.
Maxted, P. F. L.
Nascimbeni, V.
Olofsson, G.
Ottensamer, R.
Pagano, I.
Pallé, E.
Peter, G.
Piotto, G.
Pollacco, D.
Queloz, D.
Ragazzoni, R.
Rando, N.
Ratti, F.
Rauer, H.
Ribas, I.
Santos, N. C.
Scandariato, G.
Ségransan, D.
Simon, A. E.
Smith, A. M. S.
Steller, M.
Szabó, Gy. M.
Thomas, N.
Udry, S.
Van Grootel, V.
Walton, N. A.
Dátum:
2023
Tartalmi leírás:
Past occultation and phase-curve observations of the ultra-short period super-Earth 55 Cnc e obtained at visible and infrared wavelengths have been challenging to reconcile with a planetary reflection and emission model. In this study, we analyse a set of 41 occultations obtained over a two-year timespan with the CHEOPS satellite. We report the detection of 55 Cnc e’s occultation with an average depth of 12 ± 3 ppm. We derive a corresponding 2 σ upper limit on the geometric albedo of A g < 0.55 once decontaminated from the thermal emission measured by Spitzer at 4.5 µm. CHEOPS’s photometric performance enables, for the first time, the detection of individual occultations of this super-Earth in the visible and identifies short-timescale photometric corrugations likely induced by stellar granulation. We also find a clear 47.3-day sinusoidal pattern in the time-dependent occultation depths that we are unable to relate to stellar noise, nor instrumental systematics, but whose planetary origin could be tested with upcoming JWST occultation observations of this iconic super-Earth.
Típus:
info:eu-repo/semantics/article
Formátum:
application/pdf
Azonosító:
elte:000927949800004
elte:85146369927
elte:33594718
elte:ASTRON ASTROPHYS
elte:ASTRONOMY & ASTROPHYSICS
elte:669
elte:10094780
Létrehozó:
info:eu-repo/semantics/openAccess