TY - JOUR
T1 - TOI-1259Ab - A gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion
AU - Martin, David V.
AU - El-Badry, Kareem
AU - Hodžić, Vedad Kunovac
AU - Triaud, Amaury H.M.J.
AU - Angus, Ruth
AU - Birky, Jessica
AU - Foreman-Mackey, Daniel
AU - Hedges, Christina
AU - Montet, Benjamin T.
AU - Murphy, Simon J.
AU - Santerne, Alexandre
AU - Stassun, Keivan G.
AU - Stephan, Alexander P.
AU - Wang, Ji
AU - Benni, Paul
AU - Krushinsky, Vadim
AU - Chazov, Nikita
AU - Mishevskiy, Nikolay
AU - Ziegler, Carl
AU - Soubkiou, Abderahmane
AU - Benkhaldoun, Zouhair
AU - Boisse, Isabelle
AU - Battley, Matthew
AU - Miller, Nicola J.
AU - Caldwell, Douglas A.
AU - Collins, Karen
AU - Henze, Christopher E.
AU - Guerrero, Natalia M.
AU - Jenkins, Jon M.
AU - Latham, David W.
AU - Levine, Adam
AU - McDermott, Scott
AU - Mullally, Susan E.
AU - Ricker, George
AU - Seager, Sara
AU - Shporer, Avi
AU - Vanderburg, Andrew
AU - Vanderspek, Roland
AU - Winn, Joshua N.
N1 - Publisher Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - We present TOI-1259Ab, a 1.0RJup gas giant planet transiting a 0.71R⊙ K-dwarf on a 3.48 d orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of ∼1600 au from the planet host. Transits are observed in nine TESS sectors and are 2.7 per cent deep - among the deepest known - making TOI-1259Ab a promising target for atmospheric characterization. Our follow-up radial velocity measurements indicate a variability of semiamplitude $K=71\, \rm m\, s^{-1}$, implying a planet mass of 0.44MJup. By fitting the spectral energy distribution of the white dwarf, we derive a total age of $4.08^{+1.21}_{-0.53}$ Gyr for the system. The K dwarf's light curve reveals rotational variability with a period of 28 d, which implies a gyrochronology age broadly consistent with the white dwarf's total age.
AB - We present TOI-1259Ab, a 1.0RJup gas giant planet transiting a 0.71R⊙ K-dwarf on a 3.48 d orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of ∼1600 au from the planet host. Transits are observed in nine TESS sectors and are 2.7 per cent deep - among the deepest known - making TOI-1259Ab a promising target for atmospheric characterization. Our follow-up radial velocity measurements indicate a variability of semiamplitude $K=71\, \rm m\, s^{-1}$, implying a planet mass of 0.44MJup. By fitting the spectral energy distribution of the white dwarf, we derive a total age of $4.08^{+1.21}_{-0.53}$ Gyr for the system. The K dwarf's light curve reveals rotational variability with a period of 28 d, which implies a gyrochronology age broadly consistent with the white dwarf's total age.
KW - binaries: eclipsing
KW - planets and satellites: formation
KW - stars: individual (TOI-1259)
KW - stars: low-mass
KW - stars: rotation
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U2 - 10.1093/mnras/stab2129
DO - 10.1093/mnras/stab2129
M3 - Article
AN - SCOPUS:85117194641
SN - 0035-8711
VL - 507
SP - 4132
EP - 4148
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -