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Connecting photomet...
Connecting photometric and spectroscopic granulation signals with CHEOPS and ESPRESSO
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- Sulis, S. (author)
- Laboratoire d'Astrophysique de Marseille,Aix-Marseille University
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- Lendl, M. (author)
- Université de Genève,University of Geneva
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- Cegla, H. M. (author)
- The University of Warwick
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show more...
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- Rodríguez Díaz, L. F. (author)
- Århus Universitet,Aarhus University
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- Bigot, L. (author)
- Observatoire de la Cote d'Azur
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- Van Grootel, V. (author)
- Universite de Liège,University of Liège
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- Bekkelien, A. (author)
- Université de Genève,University of Geneva
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- Cameron, A. Collier (author)
- University of St Andrews
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- Maxted, P. (author)
- Keele University
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- Simon, A.E. (author)
- Universität Bern,University of Bern
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- Lovis, C. (author)
- Université de Genève,University of Geneva
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- Scandariato, Gaetano (author)
- Istituto nazionale di astrofisica (INAF)
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- Bruno, G. (author)
- Istituto nazionale di astrofisica (INAF)
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- Nardiello, D. (author)
- Istituto nazionale di astrofisica (INAF)
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Bonfanti, A. (author)
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- Fridlund, Malcolm, 1952 (author)
- Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology
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- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Salmon, S. (author)
- Université de Genève,University of Geneva
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- Sousa, S. G. (author)
- Universidade do Porto,University of Porto
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- Wilson, T. G. (author)
- University of St Andrews
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- Krenn, A. (author)
- Université de Genève,University of Geneva
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- Hoyer, S. (author)
- Laboratoire d'Astrophysique de Marseille
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- Santerne, A. (author)
- Laboratoire d'Astrophysique de Marseille
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- Ehrenreich, D. (author)
- Université de Genève,University of Geneva
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- Alibert, Y. (author)
- Universität Bern,University of Bern
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- Alonso, R. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Anglada, G. (author)
- Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC
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Bárczy, T. (author)
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- Davies, M.B. (author)
- Lund University,Lunds universitet,Matematik (naturvetenskapliga fakulteten),Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,LU profilområde: Naturlig och artificiell kognition,Lunds universitets profilområden,Mathematics (Faculty of Sciences),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH,LU Profile Area: Natural and Artificial Cognition,Lund University Profile areas
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- Barros, S. C.C. (author)
- Universidade do Porto,University of Porto
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Baumjohann, W. (author)
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- Beck, M. (author)
- Université de Genève,University of Geneva
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- Beck, T. (author)
- Universität Bern,University of Bern
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- Benz, W. (author)
- Universität Bern,University of Bern
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- Billot, N. (author)
- Université de Genève,University of Geneva
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Bonfils, X. (author)
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- Borsato, L. (author)
- Istituto nazionale di astrofisica (INAF)
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- Brandeker, Alexis (author)
- Stockholms universitet,Institutionen för astronomi
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- Broeg, C. (author)
- Universität Bern,University of Bern
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- Cabrera, J. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Charnoz, S. (author)
- Institut de Physique du Globe de Paris
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- Corral Van Damme, C. (author)
- European Space Research and Technology Centre (ESA ESTEC)
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- Csizmadia, Szilard (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Davies, M. B. (author)
- Lunds universitet,Lund University
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- Deleuil, M. (author)
- Laboratoire d'Astrophysique de Marseille
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- Deline, A. (author)
- Université de Genève,University of Geneva
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- Delrez, L. (author)
- Universite de Liège,University of Liège
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- Demangeon, O. (author)
- Universidade do Porto,University of Porto
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- Demory, B.O. (author)
- Universität Bern,University of Bern
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- Erikson, Anders (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Fortier, A. (author)
- Universität Bern,University of Bern
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Fossati, L. (author)
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- Gandolfi, D. (author)
- Universita degli Studi di Torino,University of Turin
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- Gillon, Michaël (author)
- Universite de Liège,University of Liège
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- Gudel, M. (author)
- Universität Wien,University of Vienna
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- Heng, Kevin (author)
- Universität Bern,University of Bern,The University of Warwick
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- Isaak, K. (author)
- European Space Research and Technology Centre (ESA ESTEC)
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- Kiss, L.L. (author)
- Eötvös Loránd University (ELTE),Magyar Tudomanyos Akademia,Hungarian Academy of Sciences
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- Laskar, J. (author)
- Observatoire de Paris,Paris Observatory
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- des Etangs, A. L. (author)
- Institut d 'Astrophysique de Paris
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- Magrin, D. (author)
- Istituto nazionale di astrofisica (INAF)
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- Munari, M. (author)
- Istituto nazionale di astrofisica (INAF)
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- Nascimbeni, Valerio (author)
- Istituto nazionale di astrofisica (INAF)
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- Olofsson, Göran, 1944- (author)
- Stockholms universitet,Institutionen för astronomi
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- Ottensamer, R. (author)
- Universität Wien,University of Vienna
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- Pagano, I. (author)
- Istituto nazionale di astrofisica (INAF)
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- Palle, E. (author)
- Instituto de Astrofísica de Canarias
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- Peter, G. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Piotto, Giampaolo P. (author)
- Istituto nazionale di astrofisica (INAF),Università Degli Studi di Padova,University of Padua
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- Pollacco, D. (author)
- The University of Warwick
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- Queloz, D. (author)
- Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH),University Of Cambridge
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- Ragazzoni, Roberto (author)
- Università Degli Studi di Padova,University of Padua,Istituto nazionale di astrofisica (INAF)
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- Rando, N. (author)
- European Space Research and Technology Centre (ESA ESTEC)
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- Rauer, H. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Technische Universität Berlin,Freie Universität Berlin
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- Ribas, I. (author)
- Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC,Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC)
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- Rieder, M. (author)
- Universität Bern,University of Bern
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- Santos, N. C. (author)
- Universidade do Porto,University of Porto
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- Segransan, D. (author)
- Université de Genève,University of Geneva
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- Smith, A. M.S. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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Steinberger, M. (author)
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Steller, Manfred B. (author)
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- Szabó, Gy M. (author)
- Eötvös Loránd University (ELTE)
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- Thomas, N. (author)
- Universität Bern,University of Bern
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- Udry, S. (author)
- Université de Genève,University of Geneva
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- Walton, N. A. (author)
- University Of Cambridge
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- Wolter, D. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),DLR Institute of Planetary Research
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(creator_code:org_t)
- 2023-02-01
- 2023
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 670
- Related links:
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https://research.cha... (primary) (free)
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http://dx.doi.org/10... (free)
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https://doi.org/10.1...
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https://research.cha...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- Context. Stellar granulation generates fluctuations in photometric and spectroscopic data whose properties depend on the stellar type, composition, and evolutionary state. Characterizing granulation is key for understanding stellar atmospheres and detecting planets. Aims. We aim to detect the signatures of stellar granulation, link spectroscopic and photometric signatures of convection for main-sequence stars, and test predictions from 3D hydrodynamic models. Methods. For the first time, we observed two bright stars (Teff = 5833 and 6205 K) with high-precision observations taken simultaneously with CHEOPS and ESPRESSO. We analyzed the properties of the stellar granulation signal in each individual dataset. We compared them to Kepler observations and 3D hydrodynamic models. While isolating the granulation-induced changes by attenuating and filtering the p-mode oscillation signals, we studied the relationship between photometric and spectroscopic observables. Results. The signature of stellar granulation is detected and precisely characterized for the hotter F star in the CHEOPS and ESPRESSO observations. For the cooler G star, we obtain a clear detection in the CHEOPS dataset only. The TESS observations are blind to this stellar signal. Based on CHEOPS observations, we show that the inferred properties of stellar granulation are in agreement with both Kepler observations and hydrodynamic models. Comparing their periodograms, we observe a strong link between spectroscopic and photometric observables. Correlations of this stellar signal in the time domain (flux versus radial velocities, RV) and with specific spectroscopic observables (shape of the cross-correlation functions) are however difficult to isolate due to S/N dependent variations. Conclusions. In the context of the upcoming PLATO mission and the extreme precision RV surveys, a thorough understanding of the properties of the stellar granulation signal is needed. The CHEOPS and ESPRESSO observations pave the way for detailed analyses of this stellar process.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap -- Bioinformatik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Bioinformatics (hsv//eng)
- NATURVETENSKAP -- Matematik -- Sannolikhetsteori och statistik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Probability Theory and Statistics (hsv//eng)
Keyword
- Sun: granulation
- Stars: Atmospheres
- Techniques: radial velocities
- Methods: data analysis
- Techniques: photometric
- Methods: data analysis
- Stars: Atmospheres
- Sun: granulation
- Techniques: photometric
- Techniques: radial velocities
- Hydrodynamics
- Photometry
- Stars
- Time domain analysis
- Hydrodynamic modeling
- Methods. Data analysis
- Photometrics
- Property
- Radial velocity
- Stars: atmosphere
- Stellars
- Granulation
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Sulis, S.
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Lendl, M.
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Cegla, H. M.
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Rodríguez Díaz, ...
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Bigot, L.
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Van Grootel, V.
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show more...
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Bekkelien, A.
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Cameron, A. Coll ...
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Maxted, P.
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Simon, A.E.
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Lovis, C.
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Scandariato, Gae ...
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Bruno, G.
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Nardiello, D.
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Bonfanti, A.
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Fridlund, Malcol ...
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Persson, Carina, ...
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Salmon, S.
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Sousa, S. G.
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Wilson, T. G.
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Krenn, A.
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Hoyer, S.
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Santerne, A.
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Ehrenreich, D.
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Alibert, Y.
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Alonso, R.
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Anglada, G.
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Bárczy, T.
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Davies, M.B.
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Barros, S. C.C.
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Baumjohann, W.
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Beck, M.
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Beck, T.
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Benz, W.
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Billot, N.
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Bonfils, X.
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Borsato, L.
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Brandeker, Alexi ...
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Broeg, C.
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Cabrera, J.
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Charnoz, S.
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Corral Van Damme ...
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Csizmadia, Szila ...
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Davies, M. B.
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Deleuil, M.
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Deline, A.
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Delrez, L.
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Demangeon, O.
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Demory, B.O.
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Erikson, Anders
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Fortier, A.
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Fossati, L.
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Gandolfi, D.
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Gillon, Michaël
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Gudel, M.
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Heng, Kevin
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Isaak, K.
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Kiss, L.L.
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Laskar, J.
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des Etangs, A. L ...
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Magrin, D.
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Munari, M.
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Nascimbeni, Vale ...
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Olofsson, Göran, ...
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Ottensamer, R.
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Pagano, I.
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Palle, E.
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Peter, G.
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Piotto, Giampaol ...
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Pollacco, D.
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Queloz, D.
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Ragazzoni, Rober ...
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Rando, N.
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Rauer, H.
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Ribas, I.
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Rieder, M.
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Santos, N. C.
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Segransan, D.
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Smith, A. M.S.
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Steinberger, M.
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Steller, Manfred ...
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Szabó, Gy M.
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Thomas, N.
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Udry, S.
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Walton, N. A.
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Wolter, D.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Computer and Inf ...
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and Bioinformatics
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Mathematics
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and Probability Theo ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology
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Lund University
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Stockholm University