SIMBAD references

2023A&A...669A..64D - Astronomy and Astrophysics, volume 669A64 (2023/1-1)

55 Cancri e's occultation captured with CHEOPS,.

DEMORY B.-O., SULIS S., MEIER VALDES 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., BARCZY 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 S., DAVIES M.B., DELEUIL M., DEMANGEON O.D.S., EHRENREICH D., ERIKSON A., FOSSATI L., FRIDLUND M., GANDOLFI D., GILLON M., GUDEL 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., PALLE E., PETER G., PIOTTO G., POLLACCO D., QUELOZ D., RAGAZZONI R., RANDO N., RATTI F., RAUER H., RIBAS I., SANTOS N.C., SCANDARIATO G., SEGRANSAN D., SIMON A.E., SMITH A.M.S., STELLER M., SZABO G.M., THOMAS N., UDRY S., VAN GROOTEL V. and WALTON N.A.

Abstract (from CDS):

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 2σ upper limit on the geometric albedo of Ag < 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.

Abstract Copyright: © The Authors 2023

Journal keyword(s): planets and satellites: individual: 55 Cnc e - techniques: photometric - methods: observational

VizieR on-line data: <Available at CDS (J/A+A/669/A64): raw.dat detrend.dat>

Simbad objects: 6

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2023A&A...669A..64D and select 'bookmark this link' or equivalent in the popup menu