1. Independent Validation of the Temperate Super-Earth HD 79211 b using HARPS-N
- Author
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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, DiTomasso, Victoria [0000-0003-0741-7661], Nava, Chantanelle [0000-0001-8838-3883], López-Morales, Mercedes [0000-0003-3204-8183], Bieryla, Allyson [0000-0001-6637-5401], Cloutier, Ryan [0000-0001-5383-9393], Malavolta, Luca [0000-0002-6492-2085], Mortier, Annelies [0000-0001-7254-4363], Buchhave, Lars A [0000-0003-1605-5666], Stassun, Keivan G [0000-0002-3481-9052], Sozzetti, Alessandro [0000-0002-7504-365X], Bonomo, Aldo Stefano [0000-0002-6177-198X], Charbonneau, David [0000-0002-9003-484X], Collier Cameron, Andrew [0000-0002-8863-7828], Cosentino, Rosario [0000-0003-1784-1431], Damasso, Mario [0000-0001-9984-4278], Dumusque, Xavier [0000-0002-9332-2011], Martínez Fiorenzano, AF [0000-0002-4272-4272], Ghedina, Adriano [0000-0003-4702-5152], Haywood, RD [0000-0001-9140-3574], Latham, David [0000-0001-9911-7388], Molinari, Emilio [0000-0002-1742-7735], Pinamonti, Matteo [0000-0002-4445-1845], Poretti, Ennio [0000-0003-1200-0473], Rice, Ken [0000-0002-6379-9185], Sasselov, Dimitar [0000-0001-7014-1771], Stalport, Manu [0000-0003-0996-6402], Udry, Stéphane [0000-0001-7576-6236], Watson, Christopher [0000-0002-9718-3266], Wilson, Thomas G [0000-0001-8749-1962], Apollo - University of Cambridge Repository, Science & Technology Facilities Council, University of St Andrews. School of Physics and Astronomy, and University of St Andrews. St Andrews Centre for Exoplanet Science
- Subjects
MCC ,Earth and Planetary Astrophysics (astro-ph.EP) ,Radial velocity ,The Solar System, Exoplanets, and Astrobiology ,Exoplanets ,FOS: Physical sciences ,Astronomy and Astrophysics ,3rd-DAS ,5109 Space Sciences ,Astrobiology ,M dwarf stars ,Binary stars ,QC Physics ,Rare Diseases ,Space and Planetary Science ,astro-ph.EP ,QB Astronomy ,Exoplanet detection methods ,Solar System ,51 Physical Sciences ,QC ,Astrophysics - Earth and Planetary Astrophysics ,QB - Abstract
We present high-precision radial velocities (RVs) from the HARPS-N spectrograph for HD79210 and HD79211, two M0V members of a gravitationally-bound binary system. We detect a planet candidate with a period of $24.421^{+0.016}_{-0.017}$ days around HD79211 in these HARPS-N RVs, validating the planet candidate originally identified in CARMENES RV data alone. Using HARPS-N, CARMENES and HIRES RVs spanning a total of 25 years, we further refine the planet candidate parameters to $P=24.422\pm0.014$ days, $K=3.19\pm0.27$ m/s, $M$ sin $i = 10.6 \pm 1.2 M_\oplus$, and $a = 0.142 \pm0.005$ au. We do not find any additional planet candidate signals in the data of HD79211 nor do we find any planet candidate signals in HD79210. 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., Comment: Accepted for publication in AJ, 29 pages, 17 figures
- Published
- 2023