J/AJ/166/239 Giant Outer Transiting Exoplanet Mass Survey. III. (Mann+, 2023)
Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey.
III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-transit
Jupiter Orbiting TOI-2010.
Mann C.R., Dalba P.A., Lafreniere D., Fulton B.J., Hebrard G., Boisse I.,
Dalal S., Deleuil M., Delfosse X., Demangeon O., Forveille T., Heidari N.,
Kiefer F., Martioli E., Moutou C., Endl M., Cochran W.D., MacQueen P.,
Marchis F., Dragomir D., Gupta A.F., Feliz D.L., Nicholson B.A.,
Ziegler C., Villanueva S.J., Rowe J., Talens G.J., Thorngren D.,
LaCourse D., Jacobs T., Howard A.W., Bieryla A., Latham D.W., Rabus M.,
Fetherolf T., Hellier C., Howell S.B., Plavchan P., Reefe M., Combs D.,
Bowen M., Wittrock J., Ricker G.R., Seager S., Winn J.N., Jenkins J.M.,
Barclay T., Watanabe D., Collins K.A., Eastman J.D., Ting E.B.
<Astron. J., 166, 239 (2023)>
=2023AJ....166..239M 2023AJ....166..239M
ADC_Keywords: Exoplanets; Spectra, optical; Radial velocities
Keywords: Exoplanet astronomy ; Exoplanet systems ; Exoplanet dynamics ;
Exoplanet detection methods
Abstract:
Large-scale exoplanet surveys like the Transiting Exoplanet Survey
Satellite (TESS) mission are powerful tools for discovering large
numbers of exoplanet candidates. Single-transit events are commonplace
within the resulting candidate list due to the unavoidable limitation
of the observing baseline. These single-transit planets often remain
unverified due to their unknown orbital periods and consequent
difficulty in scheduling follow-up observations. In some cases, radial
velocity (RV) follow up can constrain the period enough to enable a
future targeted transit detection. We present the confirmation of one
such planet: TOI-2010b. Nearly three years of RV coverage determined
the period to a level where a broad window search could be undertaken
with the Near-Earth Object Surveillance Satellite, detecting an
additional transit. An additional detection in a much later TESS
sector solidified our final parameter estimation. We find TOI-2010 b
to be a Jovian planet (MP=1.29MJup, RP=1.05RJup) on a mildly eccentric
orbit (e=0.21) with a period of P=141.83403 days. Assuming a simple
model with no albedo and perfect heat redistribution, the equilibrium
temperature ranges from about 360 to 450 K from apastron to
periastron. Its wide orbit and bright host star (V=9.85) make
TOI-2010b a valuable test bed for future low-insolation atmospheric
analysis.
Description:
The Levy spectrograph is a high-resolution (R∼114000) slit-fed optical
echelle spectrometer that has previously been used to refine the
orbital period and mass of single-transit planet candidates identified
by TESS. We gathered spectra with exposure times of 20-25 minutes
(mostly 25), achieving S/N values of 50-100 at around 550nm.
We also gathered high-precision RV observations at the McDonald
Observatory using the Tull coudee spectrometer 2 (TS2) on the 2.7m
Harlan J. Smith Telescope. This cross-dispersed echelle white-pupil
spectrometer was used in its "TS23" mode (indicating third focus) with
an entrance slit of 1.2x8.2", giving a spectral resolving power of
R=60000 over most of the visible spectrum.
We started observing TOI-2010 with the Spectrographe pour
l'Observation des Phenomenes des Interieurs stellaires et des
Exoplanetes (SOPHIE) in 2020 July, securing 25 spectroscopic
measurements up to 2022 September. SOPHIE is a stabilized echelle
spectrograph dedicated to high-precision RV measurements in optical
wavelengths on the193 cm Telescope at the Observatoire de
Haute-Provence, France. We used the SOPHIE high-resolution mode
(resolving power R=75000).
Objects:
----------------------------------------------------------------------------
RA (2000) DE Designation(s) (Period)
----------------------------------------------------------------------------
19 28 39.99 +53 29 14.3 TOI-2010 = 2MASS J19283999+5329143 (P=141.83403)
----------------------------------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 35 110 Radial velocity measurements of TOI-2010
--------------------------------------------------------------------------------
See also:
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
II/328 : AllWISE Data Release (Cutri+ 2013)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VI/39 : Model Atmospheres (Kurucz, 1979)
J/A+A/505/853 : HD16760 radial velocity curve (Bouchy+, 2009)
J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)
J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)
J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)
J/AJ/144/24 : The Kepler-INT survey (Greiss+, 2012)
J/ApJ/805/175 : Keck and APF radial velocities of HD7924 (Fulton+, 2015)
J/A+A/580/A23 : Stroemgren-Crawford uvbybeta photometry cat (Paunzen, 2015)
J/ApJ/821/89 : 12yrs radial velocity obs. of exoplanet systems (Bryan+, 2016)
J/ApJ/831/64 : Mass-metallicity relation for giant planets (Thorngren+, 2016)
J/ApJS/222/14 : Planetary candidates from 1st yr K2mission (Vanderburg+, 2016)
J/ApJ/834/17 : Mass & radius of planets, moons, low mass stars (Chen+, 2017)
J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)
J/AJ/154/107 : California-Kepler Survey. I. 1305 stars (Petigura+, 2017)
J/ApJ/836/77 : Library of high-S/N optical spectra of FGKM stars (Yee+, 2017)
J/ApJ/874/L31 : Giant planet bulk & atmo metallicities (Thorngren+, 2019)
J/other/ExA/51.109 : Transit KELT-11b observed by CHEOPS (Benz+, 2021)
J/AJ/163/61 : TESS-Keck Survey VIII. TOI-2180 radial velocity (Dalba+, 2022)
J/ApJS/268/4 : Stellar variab with TESS 2min cadence phot. (Fetherolf+, 2023)
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 F14.6 d BJD [2458887/24559879] Barycentric Julian Date at TBD
16- 23 F8.1 m/s RVel [-15378/8823] Radial velocity
25- 28 F4.1 m/s e_RVel [3/14] Error on RVel
30- 35 A6 --- Inst Instrument used; Levy, SOPHIE or Tull
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Dalba et al. Paper I. 2021AJ....161..103D 2021AJ....161..103D
Dalba et al. Paper II. 2021AJ....162..154D 2021AJ....162..154D
Dalba et al. Paper IV. 2024ApJS..271...16D 2024ApJS..271...16D Cat. J/ApJS/271/16
(End) Prepared by [AAS], Coralie Fix [CDS], 17-May-2024