J/A+A/660/A86 Detection and characterization of TOI-1759 b (Martioli+, 2022)
TOI-1759 b: A transiting sub-Neptune around a low mass star characterized with
SPIRou and TESS.
Martioli E., Hebrard G., Fouque P., Artigau E., Donati J.-F., Cadieux C.,
Bellotti S., Lecavelier des Etangs A., Doyon R., do Nascimento Jr J.-D.,
Arnold L., Carmona A., Cook N.J., Cortes-Zuleta P., de Almeida L.,
Delfosse X., Folsom C.P., Konig P.-C., Moutou C., Ould-Elhkim M.,
Petit P., Stassun K.G., Vidotto A.A., Vandal T., Benneke B., Boisse I.,
Bonfils X., Boyd P., Brasseur C., Charbonneau D., Cloutier R., Collins K.,
Cristofari P., Crossfield I., Diaz R.F., Fausnaugh M., Figueira P.,
Forveille T., Furlan E., Girardin E., Gnilka C.L., Gomes da Silva J.,
Gu P.-G., Guerra P., Howell S.B., Hussain G.A.J., Jenkins J.M., Kiefer F.,
Latham D.W., Matson R.A., Matthews E.C., Morin J., Naves R., Ricker G.,
Seager S., Takami M., Twicken J.D., Vanderburg A., Vanderspek R., Winn J.
<Astron. Astrophys. 660, A86 (2022)>
=2022A&A...660A..86M 2022A&A...660A..86M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Magnetic fields ;
Photometry, optical ; Radial velocities
Keywords: stars: planetary systems - stars: individual: TOI-1759 -
techniques: photometric - techniques: radial velocity -
stars: magnetic field
Abstract:
We report the detection and characterization of the transiting
sub-Neptune TOI-1759 b, using photometric time-series from TESS and
near infrared spectropolarimetric data from SPIRou on the CFHT.
TOI-1759 b orbits a moderately active M0V star with an orbital period
of 18.849975±0.000006d, and we measured a planetary radius and mass
of 3.06±0.22R⊕ and 6.8±2.0M⊕. At 0.1176±0.0013au
from the star, the planet receives 6.4 times the bolometric flux
incident on Earth, and its equilibrium temperature is estimated at
433±14K. TOI-1759 b is a likely gas-dominated sub-Neptune with an
expected high rate of photoevaporation. Therefore, it is an
interesting target to search for neutral hydrogen escape, which may
provide important constraints on the planetary formation mechanisms
responsible for the observed sub-Neptune radius desert.
Description:
These tabulated data contain the log of high-resolution
spectro-polarimetric observations of TOI-1759 obtained with the SPIRou
instrument at CFHT, the measured radial velocities using the CCF and
LBL methods, and the measured longitudinal magnetic field obtained
from the Stokes V spectra using the reduction of both APERO and
Libre-Esprit pipelines.
Objects:
-----------------------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------------------
21 47 24.79 +62 45 13.9 TOI-1759 = TYC 4266-736-1
-----------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
log.dat 66 218 Log of SPIRou observations
rv.dat 35 216 SPIRou radial velocities
blong.dat 39 53 Longitudinal magnetic field
--------------------------------------------------------------------------------
Byte-by-byte Description of file: log.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Ep Epoch number
4- 22 A19 "datime" Date UT date in ISO 8601 compliant format
24- 37 F14.6 d BJD Barycentric Julian date
39- 46 F8.4 km/s BERV Barycentric Earth radial velocity
48- 50 I3 s ExpTime Exposure time
52- 55 F4.2 --- Airmass Airmass
57- 59 I3 --- S/N Signal-to-noise ratio at 1670nm
61- 64 F4.2 --- H2Oabs H2O relative absorption
66 I1 --- Nexp ? Exposure number in the polarimetric sequence
--------------------------------------------------------------------------------
Byte-by-byte Description of file: rv.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 F14.6 d BJD Barycentric Julian date; units: [d]
16- 20 F5.1 m/s RVCCF CCF radial velocity minus the median velocity
of -61072.6m/s
22- 25 F4.1 m/s e_RVCCF 1-sigma uncertainty in the CCF radial velocity
27- 31 F5.1 m/s RVLBL ? LBL radial velocity minus the median velocity
of -60992.9m/s
33- 35 F3.1 m/s e_RVLBL ? 1-sigma uncertainty in the LBL radial velocity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: blong.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Ep Epoch number
4- 18 F15.7 d BJD Barycentric Julian date
20- 24 F5.1 G BlA ? Longitudinal magnetic field from APERO
reduction
26- 29 F4.1 G e_BlA [] 1-sigma uncertainty in the longitudinal
magnetic field from APERO reduction
31- 35 F5.1 G BlL ? Longitudinal magnetic field from Libre-Esprit
reduction
37- 39 F3.1 G e_BlL ? 1-sigma uncertainty in the longitudinal
magnetic field from Libre-Esprit reduction
--------------------------------------------------------------------------------
Acknowledgements:
Eder Martioli, martioli(at)iap.fr
(End) Patricia Vannier [CDS] 15-Mar-2022