2023AJ....165...38D

Query : 2023AJ....165...38D

2023AJ....165...38D - Astron. J., 165, 38 (2023/February-0)

Independent Validation of the Temperate Super-Earth HD 79211 b using HARPS-N.

DITOMASSO V., NAVA C., LOPEZ-MORALES M., BIERYLA A., CLOUTIER R., MALAVOLTA L., MORTIER A., BUCHHAVE L.A., STASSUN K.G., SOZZETTI A., BONOMO A.S., CHARBONNEAU D., COLLIER CAMERON A., COSENTINO R., DAMASSO M., DUMUSQUE X., FIORENZANO A.F.M., GHEDINA A., HARUTYUNYAN A., HAYWOOD R.D., LATHAM D., MOLINARI E., PEPE F.A., PINAMONTI M., PORETTI E., RICE K., SASSELOV D., STALPORT M., UDRY S., WATSON C. and WILSON T.G.

Abstract (from CDS):

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.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet detection methods - Radial velocity - M dwarf stars - Binary stars

VizieR on-line data: <Available at CDS (J/AJ/165/38): tablec2.dat tablec3.dat>

CDS comments: TYC 3801-1026-1 is a probable misprint for TYC 3806-1026-1.

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 79210 SB* 09 14 22.7748624830 +52 41 11.791503353   9.388   6.8   K7V 349 0
2 HD 79211 PM* 09 14 24.6828466599 +52 41 10.902471910   7.966   6.8   M0V 341 0
3 HD 79211b Pl? 09 14 24.6828466599 +52 41 10.902471910           ~ 6 0
4 TYC 3806-1026-1 * 09 15 58.2641841096 +52 31 11.648478216   11.55 10.61     ~ 7 0
5 HD 79450 * 09 16 12.2002161000 +52 33 52.329357360   9.33 8.92     F 6 0
6 HD 233614 * 09 16 18.1081204008 +52 36 00.201140028   9.92 9.39     F5 5 0

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