SIMBAD references

2021MNRAS.507.4132M - Mon. Not. R. Astron. Soc., 507, 4132-4148 (2021/November-1)

TOI-1259Ab - a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion.

MARTIN D.V., EL-BADRY K., HODZIC V.K., TRIAUD A.H.M.J., ANGUS R., BIRKY J., FOREMAN-MACKEY D., HEDGES C., MONTET B.T., MURPHY S.J., SANTERNE A., STASSUN K.G., STEPHAN A.P., WANG J., BENNI P., KRUSHINSKY V., CHAZOV N., MISHEVSKIY N., ZIEGLER C., SOUBKIOU A., BENKHALDOUN Z., BOISSE I., BATTLEY M., MILLER N.J., CALDWELL D.A., COLLINS K., HENZE C.E., GUERRERO N.M., JENKINS J.M., LATHAM D.W., LEVINE A., McDERMOTT S., MULLALLY S.E., RICKER G., SEAGER S., SHPORER A., VANDERBURG A., VANDERSPEK R. and WINN J.N.

Abstract (from CDS):

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 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.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): planets and satellites: formation - binaries: eclipsing - stars: individual: (TOI-1259) - stars: low-mass - stars: rotation

Simbad objects: 21

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