J/AJ/166/271 FEROS spectra for 3 giants exoplanets (Eberhardt+, 2023)
Three Warm Jupiters around Solar-analog Stars Detected with TESS.
Eberhardt J., Hobson M.J., Henning T., Trifonov T., Brahm R., Espinoza N.,
Jordan A., Thorngren D., Burn R., Rojas F.I., Sarkis P., Schlecker M.,
Pinto M.T., Barkaoui K., Schwarz R.P., Suarez O., Guillot T.,
Triaud A.H.M.J., Gunther M.N., Abe L., Boyle G., Leiva R., Suc V.,
Evans P., Dunckel N., Ziegler C., Falk B., Fong W., Rudat A., Shporer A.,
Striegel S., Watanabe D., Jenkins J.M., Seager S., Winn J.N.
<Astron. J., 166, 271 (2023)>
=2023AJ....166..271E 2023AJ....166..271E
ADC_Keywords: Exoplanets; Spectra, optical; Radial velocities
Keywords: Radial velocity ; Exoplanet detection methods ; Exoplanet
systems
Abstract:
We report the discovery and characterization of three giant exoplanets
orbiting solar-analog stars, detected by the TESS space mission and
confirmed through ground-based photometry and radial velocity
measurements taken at La Silla observatory with FEROS. TOI-2373b is a
warm Jupiter orbiting its host star every ∼13.3days, and is one of the
most massive known exoplanet with a precisely determined mass and
radius around a star similar to the Sun, with an estimated mass of
mp=9.3-0.2+0.2Mjup and a radius of rp=0.93-0.2+0.2Rjup. With a
mean density of ρ=14.4-1.0+0.9g/cm3, TOI-2373b is among the
densest planets discovered so far. TOI-2416b orbits its host star on a
moderately eccentric orbit with a period of ∼8.3days and an
eccentricity of e=0.32-0.02+0.02. TOI-2416 bis more massive than
Jupiter with mp=3.0-0.09+0.10Mjup, however is significantly
smaller with a radius of rp=0.88-0.02+0.02Rjup, leading to a high
mean density of ρ=5.4-0.3+0.3g/cm3. TOI-2524b is a warm
Jupiter near the hot Jupiter transition region, orbiting its star
every ∼7.2days on a circular orbit. It is less massive than Jupiter
with a mass of mp=0.64-0.04+0.04Mjup, and is consistent with an
inflated radius of rp=1.00-0.03+0.02Rjup, leading to a low mean
density of ρ=0.79-0.08+0.08g/cm3. The newly discovered
exoplanets TOI-2373b, TOI-2416b, and TOI-2524b have estimated
equilibrium temperatures of 860-10+10K, 1080-10+10K, and
1100-20+20K, respectively, placing them in the sparsely populated
transition zone between hot and warm Jupiters.
Description:
FEROS is an echelle spectrograph mounted on the 2.2m MPG/ESO 34
telescope at ESO's La Silla Observatory, Chile. FEROS is a highly
efficient spectrograph with a resolving power of R=48000, covering the
visible wavelength range from ∼350 to ∼920nm. During the time from
2020 February to 2021 March, we obtained 16 FEROS spectra for
TOI-2373, 17 for TOI-2416, and eight for TOI-2524.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 108 41 FEROS radial velocity and stellar activity
measurements along with their uncertainties
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See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/ApJ/831/64 : Mass-metallicity relation for giant planets (Thorngren+, 2016)
J/AJ/156/147 : RV and activity measurements of Kepler-1656 (Brady+, 2018)
J/AJ/158/45 : TESS light curve & radial velocities for HD 1397 (Brahm+, 2019)
J/AJ/157/100 : Radial velocities and bisector spans for K2-287 (Jordan+, 2019)
J/ApJ/874/L31 : Giant planet bulk & atmosphere metallicities (Thorngren+, 2019)
J/A+A/627/A49 : Teegarden's Star RV and Hα curves (Zechmeister+, 2019)
J/AJ/160/235 : Optical photometry & RVs of TOI-481b & TOI-892b (Brahm+, 2020)
J/AJ/159/145 : RVs & opt. photometry of the host star TOI-677 (Jordan+, 2020)
J/AJ/159/19 : SOAR TESS survey. I. (Ziegler+, 2020)
J/MNRAS/506/3810 : 7 transiting exoplanets CHEOPS light curves (Borsato+, 2021)
J/AJ/161/235 : Radial velocity of TOI-201 (Hobson+, 2021)
J/AJ/163/227 : HIRES radial velocity follow up for Kepler-1656 (Angelo+, 2022)
J/AJ/164/104 : NEID and HIRES radial velocity of TOI-1478 (Rice+, 2022)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- TOI TESS Object of Interest
10- 22 F13.5 d BJD [245890/2459283] Epoch, Barycentric Julian
Date
24- 29 F6.1 m.s-1 RVel [-898/688] FEROS Radial Velocity
31- 34 F4.1 m.s-1 e_RVel [8/15] Uncertainty (1σ) in RVel
36- 40 F5.1 m.s-1 BIS [-91/42] Bisector span
42- 43 I2 m.s-1 e_BIS [13/19] Uncertainty (1σ) in BIS
45- 50 F6.4 --- Ha [0.002/0.17] Activity indicator, Hα
52- 57 F6.4 --- e_Ha [0.002/0.2] Uncertainty (1σ) in Ha
59- 65 F7.4 [-] logRHK [-5.6/-4.6]? chromospheric activity index
67- 72 F6.4 [-] e_logRHK [0.06/1]? Uncertainty on logRHK
74- 80 F7.4 km.s-1 FWHM [9.7/10.3] Full width at half maximum of
cross correlation function
82- 87 F6.4 --- HeI [0.47/0.53] Activity indicator, HeI
89- 94 F6.4 --- e_HeI [0.007/0.02] Uncertainty (1σ) in HeI
96-101 F6.4 --- NaII [0.17/0.31] Activity indicator, NaII
103-108 F6.4 --- e_NaII [0.005/0.02] Uncertainty (1σ) in NaII
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 15-Apr-2024