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Title: TOI-1259Ab - A Gas Giant Planet with 2.7 Per Cent Deep Transits and a Bound white Dwarf Companion
Authors: Martin, D. V.
El-Badry, K.
Hodžić, 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.
Winn, J. N.
Issue Date: 2021
Publisher: Oxford University Press
Oxford University Press (OUP)
Citation: TOI-1259Ab - A Gas Giant Planet with 2.7 Per Cent Deep Transits and a Bound white Dwarf Companion / D. V. Martin, K. El-Badry, V. K. Hodžić et al. — DOI 10.2495/AIR110351 // Monthly Notices of the Royal Astronomical Society. — 2021. — Vol. 507. — Iss. 3. — P. 4132-4148.
Abstract: 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. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85117194641
PURE ID: 23894372
ISSN: 0035-8711
DOI: 10.2495/AIR110351
metadata.dc.description.sponsorship: Fellow of the Swiss National Science Foundation.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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