55 Cancri e's occultation captured with CHEOPS

B. O. Demory; S. Sulis; E. Meier Valdés; L. Delrez; A. Brandeker; N. Billot; A. Fortier; S. Hoyer; S. G. Sousa; K. Heng; M. Lendl; A. Krenn; B. M. Morris; J. A. Patel; Y. Alibert; R. Alonso; G. Anglada; T. Bárczy; D. Barrado; S. C.C. Barros; W. Baumjohann; M. Beck; T. Beck; W. Benz; X. Bonfils; C. Broeg; M. Buder; J. Cabrera; S. Charnoz; A. Collier Cameron; H. Cottard; Sz Csizmadia; M. B. Davies; M. Deleuil; O. D.S. Demangeon; D. Ehrenreich; A. Erikson; L. Fossati; M. Fridlund; D. Gandolfi; M. Gillon; M. Güdel; K. G. Isaak; L. L. Kiss; J. Laskar; A. Lecavelier Des Etangs; C. Lovis; A. Luntzer; D. Magrin; L. Marafatto; P. F.L. Maxted; V. Nascimbeni; G. Olofsson; R. Ottensamer; I. Pagano; E. Pallé; G. Peter; G. Piotto; D. Pollacco; D. Queloz; R. Ragazzoni; N. Rando; F. Ratti; H. Rauer; I. Ribas; N. C. Santos; G. Scandariato; D. Ségransan; A. E. Simon; A. M.S. Smith; M. Steller; Gy M. Szabó; N. Thomas; S. Udry; V. Van Grootel; N. A. Walton

doi:10.1051/0004-6361/202244894

55 Cancri e's occultation captured with CHEOPS

B. O. Demory
, S. Sulis
, E. Meier Valdés
, L. Delrez
, A. Brandeker
, N. Billot
, A. Fortier
, S. Hoyer
, S. G. Sousa
, K. Heng
, M. Lendl
, A. Krenn
, B. M. Morris
, J. A. Patel
, Y. Alibert
, R. Alonso
, G. Anglada
, T. Bárczy
, D. Barrado
, S. C.C. Barros

W. Baumjohann, M. Beck, T. Beck, W. Benz, X. Bonfils, C. Broeg, M. Buder, J. Cabrera, S. Charnoz, A. Collier Cameron, H. Cottard, Sz Csizmadia, M. B. Davies, M. Deleuil, O. D.S. Demangeon, D. Ehrenreich, A. Erikson, L. Fossati, M. Fridlund, D. Gandolfi, M. Gillon, M. Güdel, K. G. Isaak, L. L. Kiss, J. Laskar, A. Lecavelier Des Etangs, C. Lovis, A. Luntzer, D. Magrin, L. Marafatto, P. F.L. Maxted, V. Nascimbeni, G. Olofsson, R. Ottensamer, I. Pagano, E. Pallé, G. Peter, G. Piotto, D. Pollacco, D. Queloz, R. Ragazzoni, N. Rando, F. Ratti, H. Rauer, I. Ribas, N. C. Santos, G. Scandariato, D. Ségransan, A. E. Simon, A. M.S. Smith, M. Steller, Gy M. Szabó, N. Thomas, S. Udry, V. Van Grootel, N. A. Walton

Center for Space and Habitability
University of Bern
LAM
Astrobiology Research Unit
University of Liège
Department of Astronomy
Stockholm University
Université de Genève
Ipatimup Diagnósticos
University of Warwick
Space Research Institute
Instituto de Astrofisica de Canarias
Departamento de Astrofisica
Research Unit; CIBERNED and Universidad de La Laguna
Campus UAB
Institut d’Estudis Espacials de Catalunya (IEEC)
Admatis Ltd.
Depto. de Astrofísica
ESAC campus
Departamento de Fisica e Astronomia
Université Grenoble Alpes
Center for Space and Habitability
Institute of Optical Sensor Systems
DLR
Université Paris Diderot
University of St Andrews
Almatech
Lund University
University of Geneva
University of Leiden
Department of Space
Onsala Space Observatory
Dipartimento di Fisica
University of Turin
Department of Astrophysics
University of Vienna
Science and Operations Department - Science Division (SCI-SC)
ESTEC - European Space Research and Technology Centre
Konkoly Observatory
Institute of Physics
Eötvös Loránd University
Sorbonne Univ.
Institut d’Astrophysique de Paris
INAF Osservatorio Astronomico di Padova
Astrophysics Group
Keele University
INAF Osservatorio Astrofisico di Catania
University of Padova
Department of Physics
University of Cambridge
Zentrum für Astronomie und Astrophysik
TU Berlin
Free University of Berlin
Institute of Astronomy
ETH Zurich

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

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 2ÏÃ Â upper limit on the geometric albedo of Ag < 0.55 once decontaminated from the thermal emission measured by Spitzer at 4.5 μm. CHEOPSâÃ Â€Ã Â™ 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.

Original language	English
Article number	A64
Journal	Astronomy and Astrophysics
Volume	669
DOIs	https://doi.org/10.1051/0004-6361/202244894
Publication status	Published - 1 Jan 2023
Externally published	Yes

Keywords

Methods: observational
Planets and satellites: individual: 55 Cnc e
Techniques: photometric

Access to Document

10.1051/0004-6361/202244894

Cite this

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., ... Walton, N. A. (2023). 55 Cancri e's occultation captured with CHEOPS. Astronomy and Astrophysics, 669, Article A64. https://doi.org/10.1051/0004-6361/202244894

@article{b012a9d26f2d48bfbb234f1711de8574,

title = "55 Cancri e's occultation captured with CHEOPS",

abstract = "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{\"I}{\~A} {\^A} upper limit on the geometric albedo of Ag < 0.55 once decontaminated from the thermal emission measured by Spitzer at 4.5 μm. CHEOPS{\^a}{\~A} {\^A}€{\~A} {\^A}{\texttrademark} 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.",

keywords = "Methods: observational, Planets and satellites: individual: 55 Cnc e, Techniques: photometric",

author = "Demory, \{B. O.\} and S. Sulis and \{Meier Vald{\'e}s\}, E. and L. Delrez and A. Brandeker and N. Billot and A. Fortier and S. Hoyer and Sousa, \{S. G.\} and K. Heng and M. Lendl and A. Krenn and Morris, \{B. M.\} and Patel, \{J. A.\} and Y. Alibert and R. Alonso and G. Anglada and T. B{\'a}rczy and D. Barrado and Barros, \{S. C.C.\} and W. Baumjohann and M. Beck and T. Beck and W. Benz and X. Bonfils and C. Broeg and M. Buder and J. Cabrera and S. Charnoz and \{Collier Cameron\}, A. and H. Cottard and Sz Csizmadia and Davies, \{M. B.\} and M. Deleuil and Demangeon, \{O. D.S.\} and D. Ehrenreich and A. Erikson and L. Fossati and M. Fridlund and D. Gandolfi and M. Gillon and M. G{\"u}del and Isaak, \{K. G.\} and Kiss, \{L. L.\} and J. Laskar and \{Lecavelier Des Etangs\}, A. and C. Lovis and A. Luntzer and D. Magrin and L. Marafatto and Maxted, \{P. F.L.\} and V. Nascimbeni and G. Olofsson and R. Ottensamer and I. Pagano and E. Pall{\'e} and G. Peter and G. Piotto and D. Pollacco and D. Queloz and R. Ragazzoni and N. Rando and F. Ratti and H. Rauer and I. Ribas and Santos, \{N. C.\} and G. Scandariato and D. S{\'e}gransan and Simon, \{A. E.\} and Smith, \{A. M.S.\} and M. Steller and Szab{\'o}, \{Gy M.\} and N. Thomas and S. Udry and \{Van Grootel\}, V. and Walton, \{N. A.\}",

year = "2023",

month = jan,

day = "1",

doi = "10.1051/0004-6361/202244894",

language = "English",

volume = "669",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Demory, BO, Sulis, S, Meier Valdés, E, Delrez, L, Brandeker, A, Billot, N, Fortier, A, Hoyer, S, Sousa, SG, Heng, K, Lendl, M, Krenn, A, Morris, BM, Patel, JA, Alibert, Y, Alonso, R, Anglada, G, Bárczy, T, Barrado, D, Barros, SCC, 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, MB, Deleuil, M, Demangeon, ODS, Ehrenreich, D, Erikson, A, Fossati, L, Fridlund, M, Gandolfi, D, Gillon, M, Güdel, M, Isaak, KG, Kiss, LL, Laskar, J, Lecavelier Des Etangs, A, Lovis, C, Luntzer, A, Magrin, D, Marafatto, L, Maxted, PFL, 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, NC, Scandariato, G, Ségransan, D, Simon, AE, Smith, AMS, Steller, M, Szabó, GM, Thomas, N, Udry, S, Van Grootel, V & Walton, NA 2023, '55 Cancri e's occultation captured with CHEOPS', Astronomy and Astrophysics, vol. 669, A64. https://doi.org/10.1051/0004-6361/202244894

TY - JOUR

T1 - 55 Cancri e's occultation captured with CHEOPS

AU - Demory, B. O.

AU - Sulis, S.

AU - Meier Valdés, E.

AU - Delrez, L.

AU - Brandeker, A.

AU - Billot, N.

AU - Fortier, A.

AU - Hoyer, S.

AU - Sousa, S. G.

AU - Heng, K.

AU - Lendl, M.

AU - Krenn, A.

AU - Morris, B. M.

AU - Patel, J. A.

AU - Alibert, Y.

AU - Alonso, R.

AU - Anglada, G.

AU - Bárczy, T.

AU - Barrado, D.

AU - Barros, S. C.C.

AU - Baumjohann, W.

AU - Beck, M.

AU - Beck, T.

AU - Benz, W.

AU - Bonfils, X.

AU - Broeg, C.

AU - Buder, M.

AU - Cabrera, J.

AU - Charnoz, S.

AU - Collier Cameron, A.

AU - Cottard, H.

AU - Csizmadia, Sz

AU - Davies, M. B.

AU - Deleuil, M.

AU - Demangeon, O. D.S.

AU - Ehrenreich, D.

AU - Erikson, A.

AU - Fossati, L.

AU - Fridlund, M.

AU - Gandolfi, D.

AU - Gillon, M.

AU - Güdel, M.

AU - Isaak, K. G.

AU - Kiss, L. L.

AU - Laskar, J.

AU - Lecavelier Des Etangs, A.

AU - Lovis, C.

AU - Luntzer, A.

AU - Magrin, D.

AU - Marafatto, L.

AU - Maxted, P. F.L.

AU - Nascimbeni, V.

AU - Olofsson, G.

AU - Ottensamer, R.

AU - Pagano, I.

AU - Pallé, E.

AU - Peter, G.

AU - Piotto, G.

AU - Pollacco, D.

AU - Queloz, D.

AU - Ragazzoni, R.

AU - Rando, N.

AU - Ratti, F.

AU - Rauer, H.

AU - Ribas, I.

AU - Santos, N. C.

AU - Scandariato, G.

AU - Ségransan, D.

AU - Simon, A. E.

AU - Smith, A. M.S.

AU - Steller, M.

AU - Szabó, Gy M.

AU - Thomas, N.

AU - Udry, S.

AU - Van Grootel, V.

AU - Walton, N. A.

PY - 2023/1/1

Y1 - 2023/1/1

N2 - 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 2ÏÃ Â upper limit on the geometric albedo of Ag < 0.55 once decontaminated from the thermal emission measured by Spitzer at 4.5 μm. CHEOPSâÃ Â€Ã Â™ 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.

AB - 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 2ÏÃ Â upper limit on the geometric albedo of Ag < 0.55 once decontaminated from the thermal emission measured by Spitzer at 4.5 μm. CHEOPSâÃ Â€Ã Â™ 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.

KW - Methods: observational

KW - Planets and satellites: individual: 55 Cnc e

KW - Techniques: photometric

U2 - 10.1051/0004-6361/202244894

DO - 10.1051/0004-6361/202244894

M3 - Article

AN - SCOPUS:85146369927

SN - 0004-6361

VL - 669

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A64

ER -

55 Cancri e's occultation captured with CHEOPS

Abstract

Keywords

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