J/AJ/159/197 HIRES radial velocities of HD9446, HD43691 & HD179079 (Hill+, 2020)
Orbital refinement and stellar properties for the HD9446, HD43691, and HD179079
planetary systems.
Hill M.L., Mocnik T., Kane S.R., Henry G.W., Pepper J., Hinkel N.R.,
Dalba P.A., Fulton B.J., Stassun K.G., Rosenthal L.J., Howard A.W.,
Howell S.B., Everett M.E., Boyajian T.S., Fischer D.A., Rodriguez J.E.,
Beatty T.G., James D.J.
<Astron. J., 159, 197 (2020)>
=2020AJ....159..197H 2020AJ....159..197H
ADC_Keywords: Exoplanets; Spectra, optical; Photometry; Radial velocities;
Stars, masses; Stars, diameters
Keywords: Radial velocity ; Transit photometry ; Photometry ;
Stellar photometry ; Ephemerides ; Exoplanets ; Exoplanet dynamics ;
Spectral energy distribution ; Proper motions
Abstract:
The Transit Ephemeris Refinement and Monitoring Survey is a project
that aims to detect transits of intermediate-long period planets by
refining orbital parameters of the known radial velocity planets using
additional data from ground-based telescopes, calculating a revised
transit ephemeris for the planet, then monitoring the planet host star
during the predicted transit window. Here we present the results from
three systems that had high probabilities of transiting planets:
HD9446b and c, HD43691b, and HD179079b. We provide new radial velocity
(RV) measurements that are then used to improve the orbital solution
for the known planets. We search the RV data for indications of
additional planets in orbit and find that HD9446 shows a strong linear
trend of 4.8σ. Using the newly refined planet orbital solutions,
which include a new best-fit solution for the orbital period of
HD9446c, and an improved transit ephemerides, we found no evidence of
transiting planets in the photometry for each system. Transits of
HD9446b can be ruled out completely and transits HD9446c and HD43691b
can be ruled out for impact parameters up to b=0.5778 and b=0.898,
respectively, due to gaps in the photometry. A transit of HD179079b
cannot be ruled out, however, due to the relatively small size of this
planet compared to the large star and thus low signal to noise. We
determine properties of the three host stars through spectroscopic
analysis and find through photometric analysis that HD9446 exhibits
periodic variability.
Description:
Spectroscopic data for each target was obtained by the high-resolution
echelle spectrometer (HIRES) on the 10.0m Keck I telescope.
This data, along with that available from the ELODIE and SOPHIE
spectrographs was used to confirm the orbital solutions of the systems
using RadVel. Details on observations are in table 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 187 4 Stellar properties
table2.dat 55 6 Log of spectroscopic observations
tablea1.dat 32 31 Radial velocities HD43691
tablea2.dat 32 51 Radial velocities HD9446
tablea3.dat 32 93 Radial velocities HD179079
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See also:
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/ApJS/159/141 : Spectro. properties of cool stars. I. (Valenti+, 2005)
J/A+A/465/271 : Oxygen abundances in nearby stars (Ramirez+, 2007)
J/A+A/508/L17 : Abundances in solar analogs (Ramirez+, 2009)
J/MNRAS/403/1368 : Li abund. & vsini star-planet systems (Gonzalez+, 2010)
J/A+A/513/A69 : HD9446 radial velocity curve (Hebrard+, 2010)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)
J/ApJ/736/87 : Abundances in G-type stars with exoplanets (Kang+, 2011)
J/ApJ/735/41 : C and O abundances in FGK stars (Petigura+, 2011)
J/ApJ/754/37 : HD192263 radial velocities & photometry (Dragomir+, 2012)
J/ApJ/756/46 : Lithium abundances in HIP stars (Ramirez+, 2012)
J/ApJ/768/155 : RVs & photometry of HD38529 system (Henry+, 2013)
J/A+A/554/A84 : Abundances of evolved stars (Maldonado+, 2013)
J/ApJ/764/78 : Oxygen abundances in nearby FGK stars (Ramirez+, 2013)
J/A+A/556/A150 : SWEETCat I. Stellar param. for host stars (Santos+, 2013)
J/AJ/148/54 : The Hypatia Catalog ((Hinkel+, 2014)
J/A+A/561/A7 : Abundances for stars with planets (Ramirez+, 2014)
J/A+A/582/A81 : Gaia FGK benchmark stars: abundances (Jofre+, 2015)
J/A+A/580/A23 : Stroemgren-Crawford uvby photo. catalog (Paunzen, 2015)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
J/A+A/588/A98 : Metallicities & abund. of evolved stars (Maldonado+,2016)
J/AJ/152/180 : Bolom. fluxes eclipsing bin. in Tycho-2 (Stassun+, 2016)
J/ApJ/834/17 : Mass & rad. planets, moons, low mass stars (Chen+, 2017)
J/AJ/153/136 : Planets & host stars with Gaia plxs (Stassun+, 2017)
J/AJ/154/184 : Multiplicity of RV exoplanet host stars (Wittrock+, 2017)
J/AJ/156/213 : Prop. of N2K stars & gas giant companions (Ment+, 2018)
J/AJ/155/39 : Variability prop. of TIC with KELT (Oelkers+, 2018)
J/A+A/631/A125 : 54 massive companions detected with SOPHIE (Kiefer+,2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Stellar name
9 A1 --- Planet Planet component
11 A1 --- r_Planet [ab] References for planet parameters (1)
13- 16 A4 --- SpT Spectral type of the host star
18- 21 F4.2 mag Vmag [7.95/8.35] Visual magnitude of the host star
23- 28 F6.3 pc Dist [50.42/85.81] Gaia distance of the host star
30- 34 F5.3 pc e_Dist [0.35/0.4] Error on Dist
36- 39 I4 K Teff [5646/6093] SWEET temperature of the host star
41- 42 I2 K e_Teff [22]? Error on Teff
44- 47 F4.2 [-] logg [4.11/4.53] SWEET surface gravity of the host
star
49- 52 F4.2 [-] e_logg [0.04/0.16] Error on logg
54- 58 F5.3 10-1W/cm2 Fbol [1.24/2.09] SWEET bolometric flux of the host
star
60- 64 F5.3 10-1W/cm2 e_Fbol [0.02/0.05] Error on Fbol
66- 69 F4.2 [-] [Fe/H] [0.13/0.35] Metallicity of the star from
Hypatia Catalog (Hinkel+, 2014, J/AJ/148/54)
71- 74 F4.2 [-] e_[Fe/H] [0.03/0.09] Error on [Fe/H]
76- 79 F4.2 Msun Mass [1/1.4] Mass of the host star
81- 84 F4.2 Msun e_Mass [0.08/0.09] Error on Mass
86- 90 F5.3 Rsun Rad [0.98/1.8] Radii of the host star
92- 96 F5.3 Rsun e_Rad [0.01/0.03] Error on Rad
98-102 F5.3 g/cm3 rho [0.3/1.59] Density of the host star (ρ)
104-108 F5.3 g/cm3 e_rho [0.02/0.12]? Error on rho
110-117 F8.4 d Per [14.4/193]? Planet period
119-124 F6.4 d e_Per [0.001/0.9] Error on Per
126-131 F6.4 --- e [0.04/0.2] Planet eccentricity
133-138 F6.4 --- e_e [0.006/0.09] error on e
140-144 F5.1 deg omega [100/308] Planet argument of periastron
(ω)
146-150 F5.1 deg e_omega [4.8/130] Error on omega
152-157 F6.2 m/s K [6.22/131] Planet radial-velocity
semi-amplitude
159-162 F4.2 m/s e_K [0.78/4.3] Error on K
164-168 F5.3 Mjup Msini [0.08/2.55] Planet mass
170-173 F4.2 Mjup e_Msini [0.02/0.34] Error on Msini
175-180 F6.4 au a [0.12/0.66] Planet semi-major axis
182-187 F6.4 au e_a [0.006/0.03] Error on a
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Note (1): References as follows:
a = Hebrard+, 2010, J/A+A/513/A69
b = Ment+, 2018, J/AJ/156/213
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Stellar name
10- 15 A6 --- Inst Instrument used (HIRES, SOPHIE or ELODIE)
17- 20 I4 yr Obs.Y-b [2004/2013] Year of observation begin
22- 24 A3 "month" Obs.M-b Month of observation begin
26- 27 I2 d Obs.D-b Day of observation begin
29- 32 I4 yr Obs.Y-e [2006/2019] Year of observation end
34- 36 A3 "month" Obs.M-e Month of observation end
38- 39 I2 d Obs.D-e Day of observation end
41- 45 F5.1 nm lambdamin [300/390] Minimum passband
47- 52 F6.1 nm lambdamax [681/1100] Maximum passband
54- 55 I2 --- Nobs [14/93] Number of observations
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d BJD [2453015/2458734] Barycentric Julian Date of
observation (TBD)
15- 21 F7.2 m/s RVel [-111/159] Radial Velocity
23- 26 F4.2 m/s e_RVel [1.1/2.5] error on RVel
28- 32 A5 --- Inst Instrument used
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Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.5 d BJD [2456588/2458775] Barycentric Julian Date of
observation (TBD)
15- 21 F7.2 m/s RVel [-121/98] Radial Velocity
23- 26 F4.2 m/s e_RVel [0.9/2] Error on RVel
28- 32 A5 --- Inst Instrument used
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Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.5 d BJD [2453197/2458724] Barycentric Julian Date of
observation (TBD)
15- 21 F7.2 m/s RVel [-15/13] Radial velocity
23- 26 F4.2 m/s e_RVel [1/3] Error on RVel
28- 32 A5 --- Inst Instrument used
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History:
From electronic version of the journal
(End) Prepared by Coralie Fix [CDS], 24-Sep-2020