J/AJ/165/38 HARPS-N radial velocities of HD 79211 & HD 79210 (DiTomasso+, 2023)
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., Martinez Fiorenzano A.F., 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., Wilson T.G.
<Astron. J., 165, 38 (2023)>
=2023AJ....165...38D 2023AJ....165...38D
ADC_Keywords: Exoplanets; Stars, double and multiple; Stars, M-type;
Radial velocities; Optical
Keywords: Exoplanet detection methods ; Radial velocity ; M dwarf stars
; Binary stars
Abstract:
We present high-precision radial velocities (RVels) 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 24.421-0.017+0.016days around HD79211 in these HARPS-N
RVels, validating the planet candidate originally identified in
CARMENES RVel data alone. Using HARPS-N, CARMENES, and RVels spanning
a total of 25yr, we further refine the planet candidate parameters to
P=24.422±0.014days, K=3.19±0.27m/s,
Msini=10.6±1.2M⊕, and a=0.142±0.005au. 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.
Description:
These two targets were observed using theHigh Accuracy Radial velocity
Planet Searcher Northern hemisphere (HARPS-N) spectrograph installed
on the 3.6m Telescopio Nazionale Galileo (TNG) at the Observatorio del
Roque de los Muchachos in La Palma, Spain. HARPS-N is an updated
version of HARPS at the ESO 3.6m telescope, with a proven radial
velocity stability of better than 1m/s.
Objects:
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RA (2000) DE Designation(s) (Period)
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09 14 24.68 +52 41 10.9 HD 79211 = ** STF 1321B (P=16.61d)
09 14 22.77 +52 41 11.7 HD 79210 = ** STF 1321A (P=16.3d)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablec2.dat 98 114 HD79211 radial velocities and activity indicators
tablec3.dat 98 81 HD79210 radial velocities and activity indicators
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See also:
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
J/A+A/534/A58 : HD20794, HD85512, HD192310 HARPS RVel (Pepe+, 2011)
J/ApJS/200/15 : HARPS-TERRA project. I. (Anglada-Escude+, 2012)
J/ApJ/757/112 : Stellar diameters. II. K and M-stars (Boyajian+, 2012)
J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)
J/other/Sci/337.1511 : Kepler-47 transits (Orosz+, 2012)
J/ApJ/768/127 : Q1-11 Kepler light curve of KIC 4862625 (Schwamb+, 2013)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/A+A/577/A128 : CARMENES input cat. of M dwarfs. I (Alonso-Floriano+, 2015)
J/ApJ/807/45 : Pot. habitable planets orbiting M dwarfs (Dressing+, 2015)
J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)
J/A+A/584/A72 : Transiting rocky planet at 6.5pc from Sun (Motalebi+ 2015)
J/MNRAS/449/2618 : M-dwarfs in Multiples (MinMs) survey. I. (Ward-Duong+, 2015)
J/AJ/152/141 : Solar neighborhood XXXVII. RVs for Mdwarfs (Benedict+, 2016)
J/AJ/152/8 : Impact stellar mult. on planetary systems I. (Kraus+, 2016)
J/AJ/152/180 : Bolometric fluxe of eclipsing bin in Tycho2 (Stassun+, 2016)
J/AJ/153/208 : LCES HIRES/Keck RVel Exoplanet Survey (Butler+, 2017)
J/AJ/155/203 : HARPS-N RVs & activity indic. Kepler-1655 (Haywood+, 2018)
J/A+A/612/A49 : 324 CARMENES M dwarfs velocities (Reiners+, 2018)
J/A+A/625/A68 : Radii and masses of the CARMENES targets (Schweitzer+, 2019)
J/AJ/157/216 : Stellar mult. rate M dwarfs within 25pc (Winters+, 2019)
J/A+A/637/A93 : HD79211 CARMENES radial velocities (Gonzalez-Alvarez+, 2020)
J/MNRAS/499/5004 : K2-111, an old system with two planets (Mortier+, 2020)
J/ApJS/254/42 : Hipparcos-Gaia Catalog of Accelerations (Brandt, 2021)
J/A+A/649/A147 : Spectroscopic parameters for 313 M dwarfs (Sarmento+, 2021)
J/A+A/657/A7 : Stellar & substellar companions Gaia EDR3 (Kervella+, 2022)
Byte-by-byte Description of file: tablec[23].dat
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Bytes Format Units Label Explanations
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1- 11 F11.6 d BJD Barycentric Julian Date; BJD-2450000
13- 17 F5.1 m/s RVel Radial velocity calculated using TERRA
19- 21 F3.1 m/s e_RVel Uncertainty in RVel
23- 28 F6.1 --- FWHM Full-Width at Half-Maximum (1)
30- 32 F3.1 --- e_FWHM Uncertainty in FWHM
34- 37 F4.1 --- BIS Spectral bisector inverse slope (1)
39- 41 F3.1 --- e_BIS Uncertainty in BIS
43- 51 F9.6 --- Con Contrast (1)
53- 60 F8.6 --- e_Con Uncertainty in Con
62- 66 F5.3 --- Smw Mount Wilson S-index (1)
68- 72 F5.3 --- e_Smw Uncertainty in Smw
74- 78 F5.3 --- Ha The Hα index (1)
80- 84 F5.3 --- e_Ha Uncertainty in Ha
86- 91 F6.4 --- Na The Na index (1)
93- 98 F6.4 --- e_Na Uncertainty in Na
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Note (1): Calculated by the HARPS-N DRS 3.7.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 25-May-2023