The Astronomical Journal (Jan 2023)
Independent Validation of the Temperate Super-Earth HD 79211 b using HARPS-N
- Victoria DiTomasso,
- Chantanelle Nava,
- Mercedes López-Morales,
- Allyson Bieryla,
- Ryan Cloutier,
- Luca Malavolta,
- Annelies Mortier,
- Lars A. Buchhave,
- Keivan G. Stassun,
- Alessandro Sozzetti,
- Aldo Stefano Bonomo,
- David Charbonneau,
- Andrew Collier Cameron,
- Rosario Cosentino,
- Mario Damasso,
- Xavier Dumusque,
- A. F. Martínez Fiorenzano,
- Adriano Ghedina,
- Avet Harutyunyan,
- R. D. Haywood,
- David Latham,
- Emilio Molinari,
- Francesco A. Pepe,
- Matteo Pinamonti,
- Ennio Poretti,
- Ken Rice,
- Dimitar Sasselov,
- Manu Stalport,
- Stéphane Udry,
- Christopher Watson,
- Thomas G. Wilson
Affiliations
- Victoria DiTomasso
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Chantanelle Nava
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Mercedes López-Morales
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Allyson Bieryla
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Ryan Cloutier
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Luca Malavolta
- ORCiD
- Dipartimento di Fisica e Astronomia “Galileo Galilei,” Universitá di Padova , Vicolo del l’Osservatorio 3, I-35122 Padova, Italy
- Annelies Mortier
- ORCiD
- KICC & Astrophysics Group, Cavendish Laboratory, University of Cambridge , J.J. Thomson Avenue, Cambridge CB3 0HE, UK; School of Physics & Astronomy, University of Birmingham , Edgbaston, Birmingham, B15 2TT, UK
- Lars A. Buchhave
- ORCiD
- DTU Space, National Space Institute, Technical University of Denmark , Elektrovej 328, DK-2800 Kgs. Lyngby, Denmark
- Keivan G. Stassun
- ORCiD
- Department of Physics and Astronomy, Vanderbilt University , Nashville, TN 37235, USA
- Alessandro Sozzetti
- ORCiD
- INAF—Osservatorio Astrofisico di Torino , Via Osservaorio 20, I-10025 Pino Torinese, Italy
- Aldo Stefano Bonomo
- ORCiD
- INAF—Osservatorio Astrofisico di Torino , Via Osservaorio 20, I-10025 Pino Torinese, Italy
- David Charbonneau
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Andrew Collier Cameron
- ORCiD
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews , North Haugh, St Andrews KY16 9SS, UK
- Rosario Cosentino
- ORCiD
- Fundación Galileo Galilei—INAF , Rambla J.A. F. Perez, 7, E-38712 S.C. Tenerife, Spain
- Mario Damasso
- ORCiD
- INAF—Osservatorio Astrofisico di Torino , Via Osservaorio 20, I-10025 Pino Torinese, Italy
- Xavier Dumusque
- ORCiD
- Department of Astronomy, University of Geneva , Chemin Pegasi 51, Versoix, Switzerland
- A. F. Martínez Fiorenzano
- ORCiD
- Fundación Galileo Galilei—INAF , Rambla J.A. F. Perez, 7, E-38712 S.C. Tenerife, Spain
- Adriano Ghedina
- ORCiD
- Fundación Galileo Galilei—INAF , Rambla J.A. F. Perez, 7, E-38712 S.C. Tenerife, Spain
- Avet Harutyunyan
- Fundación Galileo Galilei—INAF , Rambla J.A. F. Perez, 7, E-38712 S.C. Tenerife, Spain
- R. D. Haywood
- ORCiD
- Astrophysics Group, University of Exeter , Exeter EX4 2QL, UK
- David Latham
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Emilio Molinari
- ORCiD
- INAF—Osservatorio Astronomico di Cagliari , Via della Scienza 5, I-09047, Selargius, Italy
- Francesco A. Pepe
- Department of Astronomy, University of Geneva , Chemin Pegasi 51, Versoix, Switzerland
- Matteo Pinamonti
- ORCiD
- INAF—Osservatorio Astrofisico di Torino , Via Osservaorio 20, I-10025 Pino Torinese, Italy
- Ennio Poretti
- ORCiD
- Fundación Galileo Galilei—INAF , Rambla J.A. F. Perez, 7, E-38712 S.C. Tenerife, Spain; INAF—Osservatorio Astronomico di Brera , via E. Bianchi 46, I-23807 Merate (LC), Italy
- Ken Rice
- ORCiD
- SUPA, Institute for Astronomy, University of Edinburgh , Blackford Hill, Edinburgh EH9 3HJ, UK; Centre for Exoplanet Science, University of Edinburgh , Edinburgh EH9 3FD, UK
- Dimitar Sasselov
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; [email protected]
- Manu Stalport
- ORCiD
- Observatoire de Geneva, Universite de Geneve , 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland
- Stéphane Udry
- ORCiD
- Department of Astronomy, University of Geneva , Chemin Pegasi 51, Versoix, Switzerland
- Christopher Watson
- ORCiD
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast , Belfast, BT7 1NN, UK
- Thomas G. Wilson
- ORCiD
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews , North Haugh, St Andrews KY16 9SS, UK
- DOI
- https://doi.org/10.3847/1538-3881/ac9ccd
- Journal volume & issue
-
Vol. 165,
no. 2
p. 38
Abstract
We present high-precision radial velocities (RVs) from the HARPS-N spectrograph for HD 79210 and HD 79211, two M0V members of a gravitationally bound binary system. We detect a planet candidate with a period of ${24.421}_{-0.017}^{+0.016}$ days around HD 79211 in these HARPS-N RVs, validating the planet candidate originally identified in CARMENES RV data alone. Using HARPS-N, CARMENES, and RVs spanning a total of 25 yr, we further refine the planet candidate parameters to P = 24.422 ± 0.014 days, K = 3.19 ± 0.27 m s ^−1 , M sin i = 10.6 ± 1.2 M _⊕ , and a = 0.142 ± 0.005 au. We do not find any additional planet candidate signals in the data of HD 79211, nor do we find any planet candidate signals in HD 79210. This system adds to the number of exoplanets detected in binaries with M-dwarf members and serves as a case study for planet formation in stellar binaries.
Keywords
