J/AJ/165/227 TESS radial velocities of TOI-4406, -2338 and -2589 (Brahm+, 2023)
Three Long-period Transiting Giant Planets from TESS.
Brahm R., Ulmer-Moll S., Hobson M.J., Jordan A., Henning T., Trifonov T.,
Jones M.I., Schlecker M., Espinoza N., Rojas F.I., Torres P., Sarkis P.,
Tala M., Eberhardt J., Kossakowski D., Munoz D.J., Hartman J.D., Boyle G.,
Suc V., Bouchy F., Deline A., Chaverot G., Grieves N., Lendl M.,
Suarez O., Guillot T., Triaud A.H.M.J., Crouzet N., Dransfield G.,
Cloutier R., Barkaoui K., Schwarz R.P., Stockdale C., Harris M.,
Mireles I., Evans P., Mann A.W., Ziegler C., Dragomir D., Villanueva S.,
Mordasini C., Ricker G., Vanderspek R., Latham D.W., Seager S., Winn J.N.,
Jenkins J.M., Vezie M., Youngblood A., Daylan T., Collins K.A.,
Caldwell D.A., Ciardi D.R., Palle E., Murgas F.
<Astron. J., 165, 227 (2023)>
=2023AJ....165..227B 2023AJ....165..227B
ADC_Keywords: Exoplanets; Stars, F-type; Stars, G-type; Photometry, infrared;
Spectra, optical; Radial velocities
Keywords: Exoplanets ; Extrasolar gaseous giant planets ; Radial velocity
; Transit photometry
Abstract:
We report the discovery and orbital characterization of three new
transiting warm giant planets. These systems were initially identified
as presenting single-transit events in the light curves generated from
the full-frame images of the Transiting Exoplanet Survey Satellite.
Follow-up radial velocity measurements and additional light curves
were used to determine the orbital periods and confirm the planetary
nature of the candidates. The planets orbit slightly metal-rich late
F- and early G-type stars. We find that TOI4406b has a mass of
MP=0.30±0.04MJup, a radius of RP=1.00±0.02RJup, and a
low-eccentricity orbit (e=0.15±0.05) with a period of
P=30.08364±0.00005days. TOI2338b has a mass of M
=5.98±0.20MJup, a radius of RP=1.00±0.01RJup, and a highly
eccentric orbit (e=0.676±0.002) with a period of
P=22.65398±0.00002days. Finally, TOI2589b has a mass of
MP=3.50±0.10MJup, a radius of RP=1.08±0.03RJup, and an
eccentric orbit (e=0.522±0.006) with a period of
P=61.6277±0.0002days. TOI4406b and TOI2338b are enriched in metals
compared to their host stars, while the structure of TOI2589b is
consistent with having similar metal enrichment to its host star.
Description:
All three transiting candidates presented in this study were
identified from the full-frame image (FFI) light curves of the TESS
primary mission.
TOI-4406 was observed by TESS in sector 2. An ∼5100ppm single transit
was identified with a duration of ∼0.16days. TOI-2338 was observed by
TESS in sectors 5 and 6. A single transiter candidate was identified
in the tesseract light curve of sector 5. The transit-like signal
presented a depth of ∼11000 ppm and a duration of 0.17days. TOI-2589
was observed by TESS in sector 7. In its tesseract light curve we
identified a single transiter with a depth of ∼9000ppm and a duration
of 0.28days.
A description of grounded-base observations for each target is
available in table2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 72 131 Radial velocity measurements for TOI4406, TOI2338,
and TOI2589
table2.dat 48 14 Summary of ground-based follow-up observations of
TOI4406, TOI2338, and TOI2589
table3.dat 343 3 *Stellar properties of TOI4406, TOI2338, and TOI2589
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Note on table3.dat: The stellar parameters computed in this work do
not consider possible systematic differences among different stellar
evolutionary models (Tayar+, 2022ApJ...927...31T 2022ApJ...927...31T) and have
underestimated uncertainties.
Positions, proper motion, parallaxes, and Gmag from Gaia DR2. B and
Vmag from Munari+, 2014, J/AJ/148/81. J, H, Kd mag from 2MASS.
The magnitudes reported for TOI-2589 include the contamination of a
close neighbor (ΔI=2.9mag).
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/ApJ/757/18 : Radial velocities 16 hot Jupiter host stars (Albrecht+, 2012)
J/A+A/546/A14 : Limb-darkening for CoRoT, Kepler, Spitzer (Claret+, 2012)
J/A+A/552/A16 : Limb-darkening for CoRoT, Kepler, Spitzer. II. (Claret+, 2013)
J/AJ/148/81 : APASS BVgri photometry of RAVE stars. I. Data (Munari+, 2014)
J/AJ/151/89 : Spectroscopy and photometry of HATS-17 (Brahm+, 2016)
J/ApJ/831/64 : Mass-metallicity relation for giant planets (Thorngren+, 2016)
J/A+A/618/A20 : Limb-darkening for TESS, Kepler, Corot, MOST (Claret, 2018)
J/AJ/158/45 : TESS light curve & radial velocities for HD 1397 (Brahm+, 2019)
J/AJ/157/55 : RVs and light curves for HATS-60-HATS-69 (Hartman+, 2019)
J/A+A/625/A16 : HD 2685 TESS photometry (Jones+, 2019)
J/AJ/157/100 : Radial velocities and bisector spans for K2-287 (Jordan+, 2019)
J/AJ/160/235 : Optical photometry & RVs of TOI-481b & TOI-892b (Brahm+, 2020)
J/ApJ/898/L11 : TESS and NGTS LCs and RVs of NGTS-11 (Gill+, 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/ApJS/255/6 : Warm Jupiters TESS FFIs 1st yr (2018-2019 July) (Dong+, 2021)
J/AJ/161/235 : Radial velocity of TOI-201 (Hobson+, 2021)
J/AJ/162/176 : The solar neighborhood. XLVIII. (Paredes+, 2021)
J/AJ/163/61 : TESS-Keck Survey. VIII. TOI-2180 radial velocity (Dalba+, 2022)
J/A+A/668/A29 : TOI-5542 SAAO and EulerCam photometry (Grieves+, 2022)
J/AJ/164/104 : NEID and HIRES radial velocity of TOI-1478 (Rice+, 2022)
J/A+A/666/A46 : Two long-period transiting exoplanets (Ulmer-Moll+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- ID Star identifier
10- 22 F13.5 d BJD [2458638/2459664] Barycentric Julian Date
24- 30 F7.1 m/s RVel [-2134/84919] Radial velocity
32- 35 F4.1 m/s e_RVel [2/84] The 1σ error in RVel
37- 43 F7.2 m/s BIS [-101/102] Bisector span
45- 49 F5.1 m/s e_BIS [2/119] The 1σ error in the bisector span
51- 57 F7.4 --- SHK [-0.79/0.37]? The CaII S-index
59- 64 F6.4 --- e_SHK [0.002/0.08]? The 1σ error in SHK
66- 72 A7 --- Inst Instrument used; CHIRON, CORALIE, FEROS or HARPS
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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 --- ID Star identifier
10- 25 A16 --- ObsID Observatory
27- 30 I4 yr Obs.Y [2020/2022] Year of observation
32- 33 I2 "month" Obs.M Month of observation
35- 36 I2 d Obs.D Day of observation
38- 41 F4.2 m Aper [0.32/1] Aperture
43- 44 A2 --- Filt Filter used; B; gp, Rc, ip or zs
46- 48 I3 s Texp [9/200] Exposure time
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- ID Star identifier
10- 18 I9 --- TIC TIC version 8 identifier
20- 35 A16 --- 2MASS 2MASS identifier
37- 52 A16 --- TYC TYC identifier
54- 55 I2 h RAh [1/7] Hour of right ascension,
(ICRS) at Ep=2015.5
57- 58 I2 min RAm Minute of right ascension, (ICRS) at Ep=2015.5
60- 64 F5.2 s RAs Second of right ascension, (ICRS) at Ep=2015.5
66 A1 --- DE- [-] Sign of declination, (ICRS) at Ep=2015.5
67- 68 I2 deg DEd [34/56] Degree of declination,
(ICRS) at Ep=2015.5
70- 71 I2 arcmin DEm Arcminute of declination, (ICRS) at Ep=2015.5
73- 77 F5.2 arcsec DEs Arcsecond of declination, (ICRS) at Ep=2015.5
79- 84 F6.2 mas/yr pmRA [-19/38] Proper motion in right ascension
86- 89 F4.2 mas/yr e_pmRA [0.03/0.04] Error on pmRA
91- 95 F5.2 mas/yr pmDE [8.32/19.2] Proper motion in declination
97-100 F4.2 mas/yr e_pmDE [0.03/0.04] Error on pmDE
102-105 F4.2 mas plx [3.16/4.96] Parallaxe (π)
107-110 F4.2 mas e_plx [0.02/0.03] Error on plx
112-117 F6.3 mag Tmag [10.5/11.8] TESS magnitude
119-123 F5.3 mag e_Tmag [0.006] Error on Tmag
125-130 F6.3 mag Bmag [11.6/13.2] B-band magnitude
132-135 F4.2 mag e_Bmag [0.1/0.5] Error on B-mag
137-142 F6.3 mag Vmag [10.9/12.5] V-band magnitude
144-148 F5.3 mag e_Vmag [0.007/0.03] Error on Vmag
150-155 F6.3 mag Gmag [10.9/12.2] G-band magnitude
157-161 F5.3 mag e_Gmag [0.006/0.03] Error on G-mag
163-168 F6.3 mag BPmag [11.2/12.6] G(B-P) magnitude
170-174 F5.3 mag e_BPmag [0.005/0.02] error on BPmag
176-181 F6.3 mag RPmag [10.5/11.7] G(R-P) magnitude
183-187 F5.3 mag e_RPmag [0.009/0.03] Error on RPmag
189-194 F6.3 mag Jmag [10/11.1] 2MASS J-band magnitude
196-200 F5.3 mag e_Jmag [0.02/0.03] Error on Jmag
202-207 F6.3 mag Hmag [9.69/10.8] 2MASS H-band magnitude
209-213 F5.3 mag e_Hmag [0.02/0.03] Error on H-band
215-220 F6.3 mag Kmag [9.63/10.7] 2MASS Ks-band magnitude
222-226 F5.3 mag e_Kmag [0.02/0.03] Error on Kmag
228-231 I4 K Teff [5579/6219] Effective temperature
233-234 I2 K e_Teff [60/70] Error on Teff
236-239 F4.2 [-] logg [4.29/4.4] Surface gravity
241-244 F4.2 [-] e_logg [0.01]? Negative error on logg
246-249 F4.2 [-] E_logg [0.02] Positive error on logg
251-254 F4.2 [-] [Fe/H] [0.1/0.3] Metallicity
256-259 F4.2 [-] e_[Fe/H] [0.04/0.05] Error on [Fe/H]
261-263 F3.1 km/s vsini [2.2/4.5] Rotational velocity
265-267 F3.1 km/s e_vsini [0.3] Error on vsini
269-272 F4.2 Msun Mass [0.93/1.19] Stellar mass
274-277 F4.2 Msun e_Mass [0.02]? Negative error on Mass
279-282 F4.2 Msun E_Mass [0.03] Positive error on Mass
284-287 F4.2 Rsun Rad [1.05/1.29] Stellar radius
289-292 F4.2 Rsun e_Rad [0.01] Error on Rad
294-297 F4.2 Lsun Lum [0.97/2.3] Stellar luminosity
299-302 F4.2 Lsun e_Lum [0.03]? Negative error on Lum
304-307 F4.2 Lsun E_Lum [0.04/0.1] Positive error on Lum
309-312 F4.2 mag Av [0.07/0.17] Extinction
314-317 F4.2 mag e_Av [0.05]? Negative error on Av
319-322 F4.2 mag E_Av [0.06] Positive error on Av
324-327 F4.1 Gyr Age [2.9/11] Stellar age
329 I1 Gyr e_Age [2]? Negative error on Age
331-333 F3.1 Gyr E_Age [0.7/2] Positive error on Age
335-338 F4.2 g/cm3 rho [0.78/1.22] Stellar density (ρ)
340-343 F4.2 g/cm3 e_rho [0.03/0.07] Error on rho
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie fix [CDS], 03-Oct-2023