TY - JOUR
T1 - Independent validation of the temperate super-Earth HD 79211 b using HARPS-N
AU - DiTomasso, Victoria
AU - Nava, Chantanelle
AU - López-Morales, Mercedes
AU - Bieryla, Allyson
AU - Cloutier, Ryan
AU - Malavolta, Luca
AU - Mortier, Annelies
AU - Buchhave, Lars A.
AU - Stassun, Keivan G.
AU - Sozzetti, Alessandro
AU - Bonomo, Aldo Stefano
AU - Charbonneau, David
AU - Collier Cameron, Andrew
AU - Cosentino, Rosario
AU - Damasso, Mario
AU - Dumusque, Xavier
AU - Martínez Fiorenzano, A. F.
AU - Ghedina, Adriano
AU - Harutyunyan, Avet
AU - Haywood, R. D.
AU - Latham, David
AU - Molinari, Emilio
AU - Pepe, Francesco A.
AU - Pinamonti, Matteo
AU - Poretti, Ennio
AU - Rice, Ken
AU - Sasselov, Dimitar
AU - Stalport, Manu
AU - Udry, Stéphane
AU - Watson, Christopher
AU - Wilson, Thomas G.
N1 - Funding: This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under grant No. DGE1745303. The HARPS-N project was funded by the Prodex Program of the Swiss Space Office (SSO), the Harvard- University Origin of Life Initiative (HUOLI), the Scottish Universities Physics Alliance (SUPA), the University of Geneva, the Smithsonian Astrophysical Observatory (SAO), the Italian National Astrophysical Institute (INAF), University of St. Andrews, Queen's University Belfast, and University of Edinburgh. Parts of this work have been supported by the National Aeronautics and Space Administration under grant No. NNX17AB59G, issued through the Exoplanets Research Program. Parts of this work have been supported by the Brinson Foundation. R.D.H. is funded by the UK Science and Technology Facilities Council (STFC)'s Ernest Rutherford Fellowship (grant No. ST/V004735/1). T.G.W and A.C.C acknowledge support from STFC consolidated grant Nos. ST/R000824/1 and ST/V000861/1, and UKSA grant ST/R003203/1.
PY - 2023/2/1
Y1 - 2023/2/1
N2 - 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 ± 1.2M⊕, 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.
AB - 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 ± 1.2M⊕, 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.
KW - Solar System
KW - Astrobiology
KW - Exoplanets
KW - Radial velocity
KW - M dwarf stars
KW - Binary stars
UR - https://www.scopus.com/pages/publications/85146175246
U2 - 10.3847/1538-3881/ac9ccd
DO - 10.3847/1538-3881/ac9ccd
M3 - Article
SN - 0004-6256
VL - 165
JO - Astronomical Journal
JF - Astronomical Journal
IS - 2
M1 - 38
ER -