J/AJ/166/46 EXPRES. IV. Two Additional Planets Orbiting (Brewer+, 2023)
EXPRES.
IV. Two Additional Planets Orbiting.
Brewer J.M., Zhao L.L., Fischer D.A., Roettenbacher R.M., Henry G.W.,
Llama J., Szymkowiak A.E., Cabot S.H.C., Weiss S.A., McCarthy C.
<Astron. J., 166, 46 (2023)>
=2023AJ....166...46B 2023AJ....166...46B
ADC_Keywords: Exoplanets; Stars, high-velocity; Spectra, optical;
Radial velocities
Keywords: Planet hosting stars ; Exoplanets ; Exoplanet dynamics ; Radial
velocity ; Solar analogs
Abstract:
Thousands of exoplanet detections have been made over the last 25
years using Doppler observations, transit photometry, direct imaging,
and astrometry. Each of these methods is sensitive to different ranges
of orbital separations and planetary radii (or masses). This makes it
difficult to fully characterize exoplanet architectures and to place
our solar system in context with the wealth of discoveries that have
been made. Here, we use the EXtreme PREcision Spectrograph to reveal
planets in previously undetectable regions of the mass- period
parameter space for the star ρ Coronae Borealis. We add two new
planets to the previously known system with one hot Jupiter in a 39day
orbit and a warm super-Neptune in a 102day orbit. The new detections
include a temperate Neptune planet (Msini∼20M⊕) in a 281.4day
orbit and a hot super-Earth (Msini=3.7M⊕) in a 12.95day orbit.
This result shows that details of planetary system architectures have
been hiding just below our previous detection limits; this signals an
exciting era for the next generation of extreme precision
spectrographs.
Description:
Since August 2019 the 100 Earths Survey has collected 163 observations
of HD143761 on 89 separate nights.
Objects:
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RA (2000) DE Designation(s) (Period1) (Period2)
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16 01 02.66 +33 18 12.6 * rho CrB = HD 143761 (281.4) (12.95)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 28 153 EXPRES radial velocities of HD 143761
table5.dat 26 1143 APT photometry
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See also:
III/185 : Search for Jupiter-Mass Companions (Walker+, 1995)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
J/ApJ/457/L99 : 25yr CaII-HK observations of FK nearby stars (Baliunas+, 1996)
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)
J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/ApJ/776/67 : Rotational tracks (van Saders+, 2013)
J/ApJS/210/5 : The twenty-five year Lick planet search (Fischer+, 2014)
J/ApJ/795/64 : Exoplanet physical parameters (Foreman-Mackey+, 2014)
J/ApJ/809/8 : Terrestrial planet occurrence rates KOI stars (Burke+, 2015)
J/ApJ/809/25 : Stellar & planet properties for K2 candidates (Montet+, 2015)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
J/ApJ/828/99 : Kepler pipeline transit signal. III. (Christiansen+, 2016)
J/ApJ/830/46 : Radial velocities 3 Neptune-mass planet hosts (Fulton+, 2016)
J/AJ/155/48 : California-Kepler Survey. V. Masses and radii (Weiss+, 2018)
J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)
J/AJ/159/235 : Radial Velocity jitters ∼600 planet host stars (Luhn+, 2020)
J/AJ/159/187 : 1st RVs with the EXPRES spectrograph 51Peg (Petersburg+, 2020)
J/AJ/161/26 : EXPRES. II. HD101501 photom & radial velocity (Cabot+, 2021)
J/AJ/162/216 : Occurrence rates systems with a Venus-like planet (He+, 2021)
J/ApJ/921/122 : Chromospheric activity of ρCrB and 88Leo (Metcalfe+, 2021)
J/AJ/161/80 : Excalibur calibration ; HD34411 RVs with EXPRESS (Zhao+, 2021)
J/AJ/163/19 : EXPRES. III. Photo & RVel of epsEridani (Roettenbacher+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 F14.8 d BMJD [58983/60074] Barycentric modified Julian Date;
BJD-2400000.5
16- 22 F7.3 m/s RVel [-72.2/70.8] Relative radial velocity
24- 28 F5.3 m/s e_RVel [0.2/0.6] Uncertainty in RVel
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 d HJD [51557/59027] Heliocentric Julian Date; JD-2400000
12- 18 F7.4 mag Dmag [-1.02/-0.99] The (b+y)/2 differential magnitude
20- 26 F7.4 mag TRmag [-1.008/-1.003] Trend removed magnitude
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History:
From electronic version of the journal
References:
BREWER et al, Paper I: 2020AJ....160...67B 2020AJ....160...67B
CABOT et al, Paper II: 2021AJ....161...26C 2021AJ....161...26C Cat. J/AJ/161/26
ROETTENBACHER et al, Paper III: 2022AJ....163...19R 2022AJ....163...19R Cat. J/AJ/163/19
(End) Prepared by [AAS], Coralie Fix [CDS], 09-Feb-2024