L773:0004 2021
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 15094naa a2202005 4500 | |
| 001 | oai:research.chalmers.se:29c6c050-8521-413a-a4cd-3d1192a2a607 | |
| 003 | SwePub | |
| 008 | 210303s2021 | |||||||||||000 ||eng| | |
| 009 | oai:lup.lub.lu.se:5b006244-c874-4c1b-a9fe-c56958b403d7 | |
| 009 | oai:DiVA.org:su-192459 | |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2020396082 DOI |
| 024 | 7 | a https://research.chalmers.se/publication/5225642 URI |
| 024 | 7 | a https://lup.lub.lu.se/record/5b006244-c874-4c1b-a9fe-c56958b403d72 URI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1924592 URI |
| 040 | a (SwePub)cthd (SwePub)lud (SwePub)su | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Bonfanti, A.u Space Research Institute, AAS4 aut |
| 245 | 1 0 | a CHEOPS observations of the HD 108236 planetary system: A fifth planet, improved ephemerides, and planetary radii |
| 264 | c 2021-02-19 | |
| 264 | 1 | b EDP Sciences,c 2021 |
| 520 | a Context. The detection of a super-Earth and three mini-Neptunes transiting the bright (V = 9.2 mag) star HD 108236 (also known as TOI-1233) was recently reported on the basis of TESS and ground-based light curves. Aims. We perform a first characterisation of the HD 108236 planetary system through high-precision CHEOPS photometry and improve the transit ephemerides and system parameters. Methods. We characterise the host star through spectroscopic analysis and derive the radius with the infrared flux method. We constrain the stellar mass and age by combining the results obtained from two sets of stellar evolutionary tracks. We analyse the available TESS light curves and one CHEOPS transit light curve for each known planet in the system. Results. We find that HD 108236 is a Sun-like star with R? = 0.877 ± 0.008 R? , M? = 0.869-0.048+0.050 M? , and an age of 6.7-5.1+4.0 Gyr. We report the serendipitous detection of an additional planet, HD 108236 f, in one of the CHEOPS light curves. For this planet, the combined analysis of the TESS and CHEOPS light curves leads to a tentative orbital period of about 29.5 days. From the light curve analysis, we obtain radii of 1.615 ± 0.051, 2.071 ± 0.052, 2.539-0.065+0.062, 3.083 ± 0.052, and 2.017-0.057+0.052 R? for planets HD 108236 b to HD 108236 f, respectively. These values are in agreement with previous TESS-based estimates, but with an improved precision of about a factor of two. We perform a stability analysis of the system, concluding that the planetary orbits most likely have eccentricities smaller than 0.1. We also employ a planetary atmospheric evolution framework to constrain the masses of the five planets, concluding that HD 108236 b and HD 108236 c should have an Earth-like density, while the outer planets should host a low mean molecular weight envelope. Conclusions. The detection of the fifth planet makes HD 108236 the third system brighter than V = 10 mag to host more than four transiting planets. The longer time span enables us to significantly improve the orbital ephemerides such that the uncertainty on the transit times will be of the order of minutes for the years to come. A comparison of the results obtained from the TESS and CHEOPS light curves indicates that for a V - 9 mag solar-like star and a transit signal of -500 ppm, one CHEOPS transit light curve ensures the same level of photometric precision as eight TESS transits combined, although this conclusion depends on the length and position of the gaps in the light curve. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng |
| 650 | 7 | a TEKNIK OCH TEKNOLOGIERx Elektroteknik och elektronikx Reglerteknik0 (SwePub)202022 hsv//swe |
| 650 | 7 | a ENGINEERING AND TECHNOLOGYx Electrical Engineering, Electronic Engineering, Information Engineeringx Control Engineering0 (SwePub)202022 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
| 653 | a Stars: Fundamental parameters | |
| 653 | a Ephemerides | |
| 653 | a Planets and satellites: Detection | |
| 653 | a Planets and satellites: Fundamental parameters | |
| 653 | a Ephemerides | |
| 653 | a Planets and satellites: Detection | |
| 653 | a Planets and satellites: Fundamental parameters | |
| 653 | a Stars: Fundamental parameters | |
| 653 | a Photometry | |
| 653 | a Planets | |
| 653 | a Spectroscopic analysis | |
| 653 | a Stars | |
| 653 | a Atmospheric evolution | |
| 653 | a Combined analysis | |
| 653 | a Length and position | |
| 653 | a Orbital periods | |
| 653 | a Photometric precision | |
| 653 | a Planetary orbits | |
| 653 | a Planetary system | |
| 653 | a Solar-like stars | |
| 653 | a Orbits | |
| 700 | 1 | a Delrez, L.u Universite de Liège,University of Liège4 aut |
| 700 | 1 | a Hooton, M.J.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Wilson, T.G.u University of St Andrews4 aut |
| 700 | 1 | a Fossati, L.4 aut |
| 700 | 1 | a Alibert, Y.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Hoyer, S.u Laboratoire d'Astrophysique de Marseille4 aut |
| 700 | 1 | a Mustill, Alexander Ju Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)astr-amu |
| 700 | 1 | a Osborn, H. P.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Adibekyan, V.u Universidade do Porto,University of Porto4 aut |
| 700 | 1 | a Gandolfi, D.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Salmon, S.u Universite de Liège,University of Liège4 aut |
| 700 | 1 | a Sousa, S.G.u Universidade do Porto,University of Porto4 aut |
| 700 | 1 | a Tuson, A.u University Of Cambridge4 aut |
| 700 | 1 | a Van Grootel, V.u Universite de Liège,University of Liège4 aut |
| 700 | 1 | a Cabrera, J.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Nascimbeni, Valeriou Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Maxted, P.u Keele University4 aut |
| 700 | 1 | a Barros, S.C.C.u Universidade do Porto,University of Porto4 aut |
| 700 | 1 | a Billot, N.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Bonfils, X.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Borsato, L.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Broeg, C.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Davies, Melvyn Bu Lund University,Lunds universitet,LUNARC - Centrum för Tekniska och Vetenskapliga Beräkningar vid Lunds Universitet,Annan verksamhet, LTH,Lunds Tekniska Högskola,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,LUNARC, Centre for Scientific and Technical Computing at Lund University,Other operations, LTH,Faculty of Engineering, LTH,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)astr-mda |
| 700 | 1 | a Deleuil, M.u Laboratoire d'Astrophysique de Marseille4 aut |
| 700 | 1 | a Demangeon, O.u Laboratoire d'Astrophysique de Marseille4 aut |
| 700 | 1 | a Fridlund, Malcolm,d 1952u Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)malfri |
| 700 | 1 | a Lacedelli, G.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Lendl, M.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Persson, C. M.4 aut |
| 700 | 1 | a Santos, N. C.u Universidade do Porto,University of Porto4 aut |
| 700 | 1 | a Scandariato, Gaetanou Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Szabó, G.M.u Eötvös Loránd University (ELTE)4 aut |
| 700 | 1 | a Collier Cameron, A.u University of St Andrews4 aut |
| 700 | 1 | a Udry, S.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Benz, W.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Beck, M.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Ehrenreich, D.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Fortier, A.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Isaak, K.u European Space Research and Technology Centre (ESA ESTEC)4 aut |
| 700 | 1 | a Queloz, D.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Alonso, R.u Instituto de Astrofísica de Canarias4 aut |
| 700 | 1 | a Asquier, J.u European Space Research and Technology Centre (ESA ESTEC)4 aut |
| 700 | 1 | a Bandy, T.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Bárczy, T.4 aut |
| 700 | 1 | a Barrado, D.u Centro de Astrobiologia (CAB)4 aut |
| 700 | 1 | a Barragán, O.u University Of Oxford4 aut |
| 700 | 1 | a Baumjohann, W.4 aut |
| 700 | 1 | a Beck, T.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Bekkelien, A.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Bergomi, M.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Brandeker, Alexisu Stockholms universitet,Institutionen för astronomi4 aut0 (Swepub:su)alexis |
| 700 | 1 | a Busch, M.-D.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Cessa, V.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Charnoz, S.u Institut de Physique du Globe de Paris4 aut |
| 700 | 1 | a Chazelas, B.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Corral Van Damme, C.u European Space Research and Technology Centre (ESA ESTEC)4 aut |
| 700 | 1 | a Demory, B.O.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Erikson, Andersu Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Farinato, J.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Futyan, D.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Garcia Munoz, A.u Technische Universität Berlin4 aut |
| 700 | 1 | a Gillon, Michaëlu Universite de Liège,University of Liège4 aut |
| 700 | 1 | a Guedel, M.u Universität Wien,University of Vienna4 aut |
| 700 | 1 | a Guterman, P.u Laboratoire d'Astrophysique de Marseille4 aut |
| 700 | 1 | a Hasiba, J.4 aut |
| 700 | 1 | a Heng, Kevinu Universität Bern,University of Bern4 aut |
| 700 | 1 | a Hernandez, E.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Kiss, L.u Magyar Tudomanyos Akademia,Hungarian Academy of Sciences4 aut |
| 700 | 1 | a Kuntzer, T.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Laskar, J.u Observatoire de Paris,Paris Observatory4 aut |
| 700 | 1 | a des Etangs, A. L.u Institut d 'Astrophysique de Paris4 aut |
| 700 | 1 | a Lovis, C.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Magrin, D.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Malvasio, L.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Marafatto, L.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Michaelis, H.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Munari, M.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Olofsson, Göranu Stockholms universitet,Institutionen för astronomi4 aut0 (Swepub:su)olofsson |
| 700 | 1 | a Ottacher, H.4 aut |
| 700 | 1 | a Ottensamer, R.u Universität Wien,University of Vienna4 aut |
| 700 | 1 | a Pagano, I.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Palle, E.u Instituto de Astrofísica de Canarias4 aut |
| 700 | 1 | a Peter, G.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Piazza, D.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Piotto, Giampaolo P.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Pollacco, Don L.u The University of Warwick4 aut |
| 700 | 1 | a Ragazzoni, Robertou Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Rando, N.u European Space Research and Technology Centre (ESA ESTEC)4 aut |
| 700 | 1 | a Ratti, F.u European Space Research and Technology Centre (ESA ESTEC)4 aut |
| 700 | 1 | a Rauer, H.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Ribas, I.u Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC4 aut |
| 700 | 1 | a Rieder, M.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Rohlfs, R.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Safa, F.u European Space Research and Technology Centre (ESA ESTEC)4 aut |
| 700 | 1 | a Salatti, M.u Agenzia Spaziale Italiana4 aut |
| 700 | 1 | a Segransan, D.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Simon, A.E.u Universität Bern,University of Bern4 aut |
| 700 | 1 | a Smith, Alexis M. S.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Sordet, M.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Steller, Manfred B.4 aut |
| 700 | 1 | a Thomas, Nicolasu Universität Bern,University of Bern4 aut |
| 700 | 1 | a Tschentscher, M.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Van Eylen, Vincentu University College London (UCL)4 aut |
| 700 | 1 | a Viotto, V.u Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Walter, I.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Walton, N. A.u University Of Cambridge4 aut |
| 700 | 1 | a Wildi, F.u Université de Genève,University of Geneva4 aut |
| 700 | 1 | a Wolter, D.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 710 | 2 | a Space Research Institute, AASb Universite de Liège4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 646q 646x 0004-6361x 1432-0746 |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2021/02/aa39608-20.pdf |
| 856 | 4 | u https://arxiv.org/abs/2101.00663x freey FULLTEXT |
| 856 | 4 | u http://dx.doi.org/10.1051/0004-6361/202039608y FULLTEXT |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/202039608 |
| 856 | 4 8 | u https://research.chalmers.se/publication/522564 |
| 856 | 4 8 | u https://lup.lub.lu.se/record/5b006244-c874-4c1b-a9fe-c56958b403d7 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-192459 |
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