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 - 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 - Final Version of Record not yet available as of 04/08/2021.
Accepted to MNRAS. Some structural changes from first arXiv version but no significant changes to results. One figure got a bit prettier
PY - 2021/7/27
Y1 - 2021/7/27
N2 - We present TOI-1259Ab, a 1.0 Rjup gas giant planet transiting a 0.71 R⊙ K-dwarf on a 3.48 day orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of approximately 1600 AU from the planet host. Transits are observed in nine TESS sector 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 ms-1, implying a planet mass of 0.44 Mjup. 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 a rotational variability with a period of 28 days, which implies a gyrochronology age broadly consistent with the white dwarf's total age.
AB - We present TOI-1259Ab, a 1.0 Rjup gas giant planet transiting a 0.71 R⊙ K-dwarf on a 3.48 day orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of approximately 1600 AU from the planet host. Transits are observed in nine TESS sector 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 ms-1, implying a planet mass of 0.44 Mjup. 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 a rotational variability with a period of 28 days, which implies a gyrochronology age broadly consistent with the white dwarf's total age.
KW - astro-ph.EP
KW - astro-ph.SR
UR - http://www.scopus.com/inward/record.url?scp=85117194641&partnerID=8YFLogxK
U2 - 10.1093/mnras/stab2129
DO - 10.1093/mnras/stab2129
M3 - Article
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 -