J/AJ/161/10 Radial velocities for 4 host stars (Burt+, 2021)
A collage of small planets from the Lick-Carnegie Exoplanet Survey: exploring
the super-Earth and sub-Neptune mass regime.
Burt J., Feng F., Holden B., Mamajek E.E., Huang C.X., Rosenthal M.M.,
Wang S., Butler R.P., Vogt S.S., Laughlin G., Henry G.W., Teske J.K.,
Wang S.X., Crane J.D., Shectman S.A.
<Astron. J., 161, 10 (2021)>
=2021AJ....161...10B 2021AJ....161...10B
ADC_Keywords: Exoplanets; Stars, nearby; Radial velocities; Spectra, optical
Keywords: Exoplanet astronomy ; Exoplanet detection methods ; Exoplanets ;
Radial velocity ; Mini Neptunes
Abstract:
Analysis of new precision radial velocity (RV) measurements from the
Lick Automated Planet Finder and Keck HIRES has yielded the discovery
of three new exoplanet candidates orbiting the nearby stars HD190007
and HD216520. We also report new velocities from the APF and the
Planet Finder Spectrograph and updated orbital fits for the known
exoplanet host stars GJ686 and HD180617. Of the newly discovered
planets, HD 190007b has a period of P=11.72 days, an RV semiamplitude
of K=5.64±0.55m/s, a minimum mass of Mpl=16.46±1.66M⊕,
and orbits the slightly metal-rich, active K4V star HD 190007. For HD
216520b, we find P=35.45days, K=2.28±0.20m/s, and
Mpl=10.26±0.99M⊕, while for HD216520c, P=154.43days,
K=1.29± 0.22m/s, and Mpl=9.44±1.63M⊕. Both planets orbit
the slightly metal-poor, inactive K0V star HD216520. Our updated
best-fit models for HD180617b and GJ686b are in good agreement with
the published results. For HD180617b, we obtain P=105.91days and
Mpl=12.214±1.05M⊕. For GJ686b, we find P=15.53days and
Mpl=6.624±0.432M⊕. Using an injection-recovery exercise, we
find that HD190007b and HD216520b are unlikely to have additional
planets with masses and orbital periods within a factor of 2, in
marked contrast to ∼85% of planets in this mass and period range
discovered by Kepler.
Description:
The data sets presented in this work consist of unbinned radial
velocity (RV) observations taken with seven different instruments: the
Levy spectrometer on the 2.4m Automated Planet Finder telescope (APF),
the High Resolution spectrometer (HIRES), on the 10m Keck I telescope,
the Planet Finder spectrometer (PFS) on the 6.5m Magellan Clay
telescope, the High Accuracy Radial Velocity Planet Searcher (HARPS)
on the ESO 3.6m telescope, the High Accuracy Radial velocity Planet
Searcher for the Northern hemisphere (HARPS-N) on the 3.58m Telescopio
Nazionale Galileo, the Spectrographe pour l'Observation des PHenomenes
des Interieurs stellaires et des Exoplanetes (SOPHIE) on the 1.93m
reflector telescope at the Haute-Provence Observatory, and the
CARMENES spectrometer on the 3.5m telescope at the Calar Alto
Observatory.
While only the 5000-6200Å spectral region is used for measuring
RVs, the instruments produce spectra from 3700 to 7700Å for the
APF, 3700-8000Å for HIRES, and 3900-6700Å for PFS.
Objects:
------------------------------------------------------------
RA (2000) DE Designation(s) (Period)
------------------------------------------------------------
20 02 47.05 +03 19 34.3 HD190007 = HD 190007 (P=11.72d)
22 47 31.88 +83 41 49.3 HD216520 = HD 216520 (P=35.45d)
17 37 53.35 +18 35 30.2 GJ686 = BD+18 3421 (P=15.53d)
19 16 55.26 +05 10 08.0 HD180617 = HD 180617 (P=105.91d)
------------------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 55 191 Radial Velocity data for HD 190007
table7.dat 55 804 Radial Velocity data for HD 216520
table8.dat 55 172 Radial Velocity data for GJ 686
table9.dat 55 274 Radial Velocity data for HD 180617
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See also:
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II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
II/335 : Revised catalog GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/349 : StarHorse, Gaia DR2 photo-astrometric distances (Anders+, 2019)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
J/AJ/126/2048 : NStars project: the Northern Sample. I. (Gray+, 2003)
J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004)
J/AJ/129/1063 : Abundances of stars within 15pc of the Sun (Luck+, 2005)
J/MNRAS/373/13 : Lower main-sequence stars fundam param. (Casagrande+, 2006)
J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)
J/AN/328/938 : Teff/line-depth ratio for ELODIE spectra (Biazzo+, 2007)
J/ApJS/168/297 : Stellar parameters of nearby cool stars (Takeda+, 2007)
J/A+A/492/277 : Analysis of Collinder 69 stars with VOSA (Bayo+, 2008)
J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)
J/A+A/489/923 : Abundances of stars in lower main sequence (Mishenina+,2008)
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J/ApJS/197/8 : Kepler's candidate multiple transit planets (Lissauer+,2011)
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J/ApJS/200/15 : HARPS-TERRA project. I. (Anglada-Escude+, 2012)
J/A+A/541/A9 : M dwarfs activity and radial velocity (Gomes da Silva+,2012)
J/MNRAS/421/3189 : CaII and Hα data for dK5/dM4 stars (Houdebine, 2012)
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J/ApJ/756/46 : Lithium abundances in HIP stars (Ramirez+, 2012)
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J/A+A/562/A71 : Chemical abund of solar neighbourhood dwarfs (Bensby+, 2014)
J/MNRAS/442/220 : Lick indices for FGK stars (Franchini+, 2014)
J/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)
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J/A+A/587/A2 : SP_Ace derived data from stellar spectra (Boeche+, 2016)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
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J/ApJ/822/97 : Rotation-Activity Correlat K-M dwarfs. I. (Houdebine+, 2016)
J/ApJ/817/104 : Keck/HIRES radial velocity obs. of HD32963 (Rowan+, 2016)
J/AJ/153/208 : LCES HIRES/Keck RV Exoplanet Survey (Butler+, 2017)
J/AJ/154/122 : Radial velocities for the HD3167 system (Christiansen+,2017)
J/AJ/153/128 : WOCS. LXXV. Hyades&Praesepe stellar Li data (Cummings+,2017)
J/ApJ/835/25 : Calibrated solar S-index time series (Egeland+, 2017)
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J/ApJ/838/25 : Hectochelle spectroscopy for 776 Kepler stars (Guo+, 2017)
J/AJ/154/5 : Transit timing variations 145 Kepler planets (Hadden+,2017)
J/ApJ/848/34 : CATalog of Stellar Unified Properties (Hinkel+, 2017)
J/AJ/153/21 : Abundances local region. II. F, G, K dwarfs (Luck+, 2017)
J/AJ/154/259 : Fundamental parameters Tycho-2 & TGAS stars (Stevens+, 2017)
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J/AJ/157/52 : Radial velocity obs in super-Earth systems (Bryan+, 2019)
J/ApJ/879/49 : Rotation periods 171 Gaia members of NGC6811 (Curtis+, 2019)
J/A+A/628/A49 : Spectroscopy of dwarf stars (Mikolaitis+, 2019)
J/A+A/623/A72 : Binarity of Hipparcos stars Gaia pm anomaly (Kervella+,2019)
J/A+A/627/A116 : LSPM J2116+0234 and GJ 686 radial velocities (Lalitha+,2019)
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Byte-by-byte Description of file: table*.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d MJD Modified Julian Date
15- 20 F6.2 m/s RVel Radial velocity
22- 25 F4.2 m/s e_RVel Uncertainty in RVel
27- 37 F11.8 --- S-index The S-index
39- 49 F11.8 --- H-index The H-index
51- 55 A5 --- Inst Instrument used
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 19-Feb-2021