J/AJ/165/120 g and i'-band light curve of TOI-5205 with SDSS (Kanodia+, 2023)
TOI-5205b: A Short-period Jovian Planet Transiting a Mid-M Dwarf.
Kanodia S., Mahadevan S., Libby-Roberts J., Stefansson G., Canas C.I.,
Piette A.A.A., Boss A., Teske J., Chambers J., Zeimann G., Monson A.,
Robertson P., Ninan J.P., Lin A.S.J., Bender C.F., Cochran W.D.,
Diddams S.A., Gupta A.F., Halverson S., Hawley S., Kobulnicky H.A.,
Metcalf A.J., Parker B.A., Powers L., Ramsey L.W., Roy A., Schwab C.,
Swaby T.N., Terrien R.C., Wisniewski J.
<Astron. J., 165, 120 (2023)>
=2023AJ....165..120K 2023AJ....165..120K
ADC_Keywords: Exoplanets; Stars, M-type; Photometry, VRI
Keywords: Radial velocity ; M dwarf stars ; Extrasolar gaseous giant
planets ; Transits
Abstract:
We present the discovery of TOI-5205b, a transiting Jovian planet
orbiting a solar metallicity M4V star, which was discovered using
Transiting Exoplanet Survey Satellite photometry and then confirmed
using a combination of precise radial velocities, ground-based
photometry, spectra, and speckle imaging. TOI-5205b has one of the
highest mass ratios for M-dwarf planets, with a mass ratio of almost
0.3%, as it orbits a host star that is just 0.392±0.015 M☉.
Its planetary radius is 1.03±0.03RJup, while the mass is
1.08±0.06MJup. Additionally, the large size of the planet
orbiting a small star results in a transit depth of ∼7%, making it one
of the deepest transits of a confirmed exoplanet orbiting a
main-sequence star. The large transit depth makes TOI-5205b a
compelling target to probe its atmospheric properties, as a means of
tracing the potential formation pathways. While there have been
radial-velocity-only discoveries of giant planets around mid-M dwarfs,
this is the first transiting Jupiter with a mass measurement
discovered around such a low-mass host star. The high mass of
TOI-5205b stretches conventional theories of planet formation and disk
scaling relations that cannot easily recreate the conditions required
to form such planets.
Description:
We observed an ingress of TOI-5205b in the Sloan Digital Sky Survey
(SDSS) i' while the target was rising from an airmass of 1.41-1.16.
To check for chromaticity, we also observed TOI-5205b on 2022 July 3
in SDSS g' while it was rising from an airmass of 2.35-1.45.
Objects:
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RA (2000) DE Designation(s) (Period)
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20 55 04.91 +24 21 38.7 TOI-5205 = TIC 419411415 (P=1.63d)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig3_c.dat 32 558 SDSS i' light curve from 2022-04-22
fig3_d.dat 32 97 SDSS g light curve from 2022-07-04
fig3_g.dat 32 380 SDSS i' light curve from 2022-07-17
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See also:
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
VI/121 : Linelist of HCN and HNC (Harris+, 2006)
VI/133 : A variationally computed hot NH3 line list - BYTe (Yurchenko+, 2011)
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J/A+A/337/403 : Low-mass stars evolutionary models (Baraffe+ 1998)
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/ApJ/651/L49 : Upper ScoOB association IRAC observations (Carpenter+, 2006)
J/AJ/134/2398 : Stellar SEDs in SDSS and 2MASS filters (Covey+, 2007)
J/ApJ/720/1290 : Abundances of stars hosting planets (Ghezzi+, 2010)
J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)
J/A+A/533/A141 : Stellar parameters for 582 HARPS FGK stars (Sousa+, 2011)
J/ApJS/200/15 : HARPS-TERRA project. I. (Anglada-Escude+, 2012)
J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013)
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J/A+A/562/A71 : Chemical abund of solar neighbourhood dwarfs (Bensby+, 2014)
J/ApJ/788/59 : Param model circumstellar disks gas mass (Williams+, 2014)
J/MNRAS/440/1649 : ExoMol line lists for CH4 (Yurchenko+, 2014)
J/AJ/149/166 : Photometry and spectroscopy of HATS-6 (Hartman+, 2015)
J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)
J/ApJ/812/3 : MEarth midtolate Mdwarfs rotation & kinematics (West+, 2015)
J/ApJ/828/46 : ALMA survey Lupus protoplanetary disks. I. (Ansdell+, 2016)
J/ApJ/827/142 : ALMA observations GKM stars in Upper Sco (Barenfeld+, 2016)
J/AJ/152/141 : Solar neighborhood XXXVII. RVs for Mdwarfs (Benedict+, 2016)
J/ApJ/831/125 : ALMA 887um obs of ChaI star-forming region (Pascucci+, 2016)
J/MNRAS/461/794 : Scorpius-Centaurus K-Type Stars (Pecaut+, 2016)
J/ApJ/831/64 : Mass-metallicity relation giant planets (Thorngren+, 2016)
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J/A+A/602/A88 : 5 M dwarfs radial velocity curves (Astudillo-Defru+, 2017)
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J/AJ/156/102 : TESS Input Catalog & Candidate Target List (Stassun+, 2018)
J/A+A/609/A117 : CARMENES radial velocity curves 7 M-dwarf (Trifonov+, 2018)
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J/AJ/157/231 : MLSDSS-GaiaDR2 sample of M and L dwarfs (Kiman+, 2019)
J/A+A/624/A94 : The role of the host star's metallicity (Maldonado+, 2019)
J/ApJ/871/63 : How to constrain your M dwarf II Nearby bin (Mann+, 2019)
J/other/Sci/365.1441 : GJ 3512 radial velocity & light curves (Morales+, 2019)
J/A+A/625/A68 : Radii and masses of the CARMENES targets (Schweitzer+, 2019)
J/ApJ/883/175 : 1st release of MaNGA Stellar Library (MaStar) (Yan+, 2019)
J/A+A/642/A115 : CARMENES input catalogue of M dwarfs. V. (Cifuentes+, 2020)
J/ApJS/250/29 : Search for nearby Earth analogs. III. RV sets (Feng+, 2020)
J/ApJ/899/29 : Radial velocities of TOI-1728 with HPF (Kanodia+, 2020)
J/A+A/644/A68 : Abundance signature of M dwarf stars (Maldonado+, 2020)
J/AJ/159/100 : Flux & RVs of dwarf G9-40 with K2 & HPF (Stefansson+, 2020)
J/A+A/650/A201 : 10 parsec sample in the Gaia era first update (Reyle+, 2021)
J/AJ/163/125 : Light curve & RVel of 4 giants planets (Jordan+, 2022)
J/AJ/164/81 : Radial velocity & photometric flux TOI-3757 (Kanodia+, 2022)
J/ApJS/259/33 : Faint-star TOIs from TESS Primary Mission (Kunimoto+, 2022)
J/AJ/163/156 : THYME. VI. TOI-1227 radial velocity (Mann+, 2022)
J/A+A/658/A194 : Stellar parameters of 18 M dwarfs (Passegger+, 2022)
J/A+A/663/A48 : Two Saturn-mass planets around M dwarfs (Quirrenbach+, 2022)
Byte-by-byte Description of file: fig3_[cdg].dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric Julian Date (at TDB) of observation
16- 23 F8.6 --- Flux Relative flux
25- 32 F8.6 --- e_Flux Uncertainty in flux
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 20-Jun-2023