CORALIE radial-velocity search for companions around evolved stars (CASCADES): III. A new Jupiter host-star: In-depth analysis of HD 29399 using TESS data
Planets and satellites: detection; Stars: fundamental parameters; Stars: individual: HD 29399; Stars: individual: TIC 38828531; Stars: interiors; Techniques: radial velocities; Host-stars; Orbital evolutions; Planets and satellites: detections; Star: individual: HD 29399; Star: individual: TIC 38828531; Stars: individual: proxima Centauri; Stars: Interiors; Stars:fundamental parameters; Astronomy and Astrophysics; Space and Planetary Science; astro-ph.EP; astro-ph.SR
Abstract :
[en] Context. Increasing the number of detected exoplanets is far from anecdotal, especially for long-period planets that require a long duration of observation. More detections imply a better understanding of the statistical properties of exoplanet populations, and detailed modelling of their host stars also enables thorough discussions of star-planet interactions and orbital evolution of planetary systems. Aims. In the context of the discovery of a new planetary system, we aim to perform a complete study of HD 29399 and its companion by means of radial-velocity measurements, seismic characterisation of the host-star, and modelling of the orbital evolution of the system. Methods. High-resolution spectra of HD 29399 were acquired with the CORALIE spectrograph mounted on the 1.2-m Swiss telescope located at La Silla Observatory (Chile) as part of the CASCADES survey. We used the moments of the cross-correlation function profile as well as the photometric variability of the star as diagnostics to distinguish between stellar and planetary-induced signals. To model the host star we combined forward modelling with global and local minimisation approaches and inversion techniques. We also studied the orbital history of the system under the effects of both dynamical and equilibrium tides. Results. We present the detection of a long-period giant planet. Combining these measurements with photometric observations by TESS, we are able to thoroughly model the host star and study the orbital evolution of the system. We derive stellar and planetary masses of 1.17 ± 0.10 M⊠and 1.59 ± 0.08 MJup, respectively, and an age for the system of 6.2 Gyr. We show that neither dynamical nor equilibrium tides have been able to affect the orbital evolution of the planet. Moreover, no engulfment is predicted for the future evolution of the system.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Pezzotti, Camilla ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR) ; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Ottoni, G.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Buldgen, Gaël ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie ; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Lyttle, A.; School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
Eggenberger, P.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Udry, S.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Ségransan, D.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Mayor, M.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Lovis, C.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Marmier, M.; Département d'Astronomie, Université de Genève, Versoix, Switzerland
Miglio, A.; School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
Elsworth, Y.; School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
Davies, G.R.; School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
Ball, W.H.; School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
CORALIE radial-velocity search for companions around evolved stars (CASCADES): III. A new Jupiter host-star: In-depth analysis of HD 29399 using TESS data
cA knolw edgements. We thank the referee for the useful comments that helped to improve the quality of the manuscript. This work has been carried out within the framework of the National Centre for Competence in Research PlanetS supported by the Swiss National Science Foundation. The authors acknowledge the financial support of the SNSF. This publication makes use of the Data & Analysis Center for Exoplanets (DACE), which is a facility based at the University of Geneva (CH) dedicated to extrasolar planet data visualisation, exchange and analysis. DACE is a platform of the Swiss National Centre of Competence in Research (NCCR) PlanetS, federating the Swiss expertise in Exoplanet research. The DACE platform is available at https://dace.unige.ch. We thank all observers at La Silla Observatory from the past fourteen years for their quality work. We acknowledge financial support from the Swiss National Science Foundation (SNSF). This work has, in part, been carried out within the frame-work of the National Centre for Competence in Research PlanetS supported by SNSF. C.P. acknowledges funding from the Swiss National Science Foundation (project Interacting Stars, number 200020-172505). G.B. acknowledges funding from the SNF AMBIZIONE grant no. 185805 (Seismic inversions and modelling of transport processes in stars). P.E. has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 833925, project STAREX). This article used an adapted version of InversionKit, a software developed within the HELAS and SPACEINN networks, funded by the European Commission’s Sixth and Seventh Framework Programmes. AM acknowledges support from the ERC Consolidator Grant funding scheme (project ASTEROCHRONOMETRY, https://www.asterochronometry.eu, G.A. no. 772293).
Aerts, C., & Eyer, L. 2000, in 6th Vienna workshop on delta Scuti and related stars, eds. M. Breger, & M. Montgomery (Vienna: Astronomical Society of the Pacific), 113
Alonso, A., Arribas, S., & Martínez-Roger, C. 1999, A&AS, 140, 261
Alves, S., Benamati, L., Santos, N. C., et al. 2015, MNRAS, 448, 2749
Asplund, M., Grevesse, N., Sauval, A. J., & Scott, P. 2009, ARA&A, 47, 481
Astropy Collaboration (Robitaille, T. P., et al.) 2013, A&A, 558, A33
Astropy Collaboration (Price-Whelan, A. M., et al.) 2018, ApJ, 156, 123
Bailer-Jones, C. A. L., Rybizki, J., Fouesneau, M., Mantelet, G., & Andrae, R. 2018, ApJ, 156, 58
Ball, W. H., & Gizon, L. 2014, A&A, 568, A123
Ball, W. H., Beeck, B., Cameron, R. H., & Gizon, L. 2016, A&A, 592, A159
Baluev, R. V. 2008, MNRAS, 385, 1279
Batalha, N. M., Borucki, W. J., Bryson, S. T., et al. 2011, ApJ, 729, 27
Benz, W., Broeg, C., Fortier, A., et al. 2020, 2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace), 26
Brown, A. G. A., Vallenari, A., Prusti, T., et al. 2018, A&A, 616, A1
Buldgen, G., Reese, D. R., & Dupret, M. A. 2016, A&A, 585, A109
Buldgen, G., Farnir, M., Pezzotti, C., et al. 2019 a, A&A, 630, A126
Campante, T. L., Santos, N. C., & Monteiro, M. J. P. F. G. 2018, Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds, 49
Cantiello, M., Mankovich, C., Bildsten, L., Christensen-Dalsgaard, J., & Paxton, B. 2014, ApJ, 788, 93
Christensen-Dalsgaard, J., Kjeldsen, H., Brown, T. M., et al. 2010, ApJ, 713, L164
Davies, G. R., & Miglio, A. 2016, Astron. Nachr., 337, 774
Davies, G. R., Handberg, R., Miglio, A., et al. 2014, MNRAS, 445, L94
De Ridder, J., Barban, C., Carrier, F., et al. 2006, A&A, 448, 689
De Ridder, J., Barban, C., Baudin, F., et al. 2009, Nature, 459, 398
Delisle, J.-B., Ségransan, D., Buchschacher, N., & Alesina, F. 2016, A&A, 590, A134
Delisle, J.-B., Ségransan, D., Dumusque, X., et al. 2018, A&A, 614, A133
Delisle, J.-B., Hara, N., & Ségransan, D. 2020 a, A&A, 635, A83
Helled, R., Bodenheimer, P., Podolak, M., et al. 2014, in Protostars and Planets VI (University of Arizona Press)
Høg, E., Fabricius, C., Makarov, V. V., et al. 2000, The Tycho-2 Catalogue of the 2.5 million brightest stars, Tech. rep., Niels Bohr Institutet
Huber, D. 2018, Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds, 49, 119
Huber, D., Carter, J. A., Barbieri, M., et al. 2013 a, Science, 342, 331
Huber, D., Chaplin, W. J., Christensen-Dalsgaard, J., et al. 2013 b, ApJ, 767, 127
Iglesias, C. A., & Rogers, F. J. 1996, ApJ, 464, 943
Irwin, A. W. 2012, FreeEOS: Equation of State for stellar interiors calculations, Astrophysics Source Code Library [record ascl:1211.002]
Jontof-Hutter, D. 2019, Annu. Rev. Earth Planet. Sci., 47, 141
Kaltenegger, L. 2017, ARA&A, 55, 433
Kjeldsen, H., Bedding, T. R., & Christensen-Dalsgaard, J. 2008, ApJ, 683, L175
Lightkurve Collaboration (Cardoso, J. V. d. M., et al.) 2018, Lightkurve: Kepler and TESS time series analysis in Python Astrophys. Source Code Libr. [record ascl:1812.013]
Lo Curto, G., Pepe, F., Avila, G., et al. 2015, The Messenger, 1, 9
Lomb, N. R. 1976, Ap&SS, 39, 447
Magic, Z., Chiavassa, A., Collet, R., & Asplund, M. 2015, A&A, 573, A90
Mayor, M., Pepe, F., Queloz, D., et al. 2003, The Messenger (ISSN0722-6691), 114, 20
Montalbán, J., Miglio, A., Noels, A., Scuflaire, R., & Ventura, P. 2010, ApJ, 721, L182
Montalbán, J., Mackereth, J. T., Miglio, A., et al. 2021, Nat. Astron., 5, 640
Mosser, B., Michel, E., Belkacem, K., et al. 2013, A&A, 550, A126
Mulders, G. D. 2018, Planet Populations as a Function of Stellar Properties, 153
Nielsen, M. B., Davies, G. R., Ball, W. H., et al. 2021, AJ, 161, 62
Ottoni, G., Udry, S., Ségransan, D., et al. 2022, A&A, 657, A87 (Paper I)
Pijpers, F. P., & Thompson, M. J. 1994, A&A, 281, 231
Pojmański, G. 2002, Acta Astron., 52, 397
Privitera, G., Meynet, G., Eggenberger, P., et al. 2016 a, A&A, 593, L15
