2021MNRAS.507.4132M

Query : 2021MNRAS.507.4132M

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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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TOI-1624 * 00 12 05.1818599296 +66 39 02.017697796   11.26 10.69     ~ 2 0
2 TOI-249 PM* 00 56 19.3007867544 -38 56 55.334419332   13.99 12.67 12.22 11.04 ~ 13 0
3 HD 8535 PM* 01 23 37.2358505880 -41 16 11.279497332   8.25 7.69     G0V 85 1
4 HD 13445 PM* 02 10 25.9181700303 -50 49 25.465181208   6.945 6.117     K1.5V 484 1
5 HD 13445b Pl 02 10 25.9181700303 -50 49 25.465181208           ~ 110 1
6 WASP-98 * 03 53 42.9206066712 -34 19 41.585663208     13.0     G7 37 0
7 * eps Ret PM* 04 16 29.0281470260 -59 18 07.755891304 6.59 5.52 4.44 3.62 3.08 K2III 262 1
8 TOI-1703 * 07 35 29.8798252464 +49 28 41.565777384   12.04 11.02     ~ 4 0
9 HD 107148 PM* 12 19 13.4910214488 -03 19 11.239255452   8.72 8.02 8.888   G5V 152 1
10 WASP-107b Pl 12 33 32.8441110816 -10 08 46.225572324           ~ 289 0
11 HD 118904 * 13 37 10.9876472376 +71 14 32.097528276   6.711 5.496     K2III 52 0
12 HD 147513 PM* 16 24 01.2911377368 -39 11 34.729913940 6.17 6.02 5.376     G5V 389 1
13 TOI-1259 PM* 18 48 24.0699094456 +79 15 21.759912444   13.151 12.144 11.832   ~ 23 0
14 TOI-1259b Pl 18 48 24.0713128420 +79 15 21.760987922           ~ 10 0
15 SDSS J184826.50+791534.2 WD? 18 48 26.5244719752 +79 15 33.840830916           ~ 8 0
16 LP 141-14 WD* 18 57 39.3436703328 +53 30 33.301040904   17.6   16.4   DC 82 0
17 Kepler-779 Ro* 19 02 30.8516621664 +44 18 39.206907288           M2V 48 0
18 NGC 6811 OpC 19 37 21.8 +46 22 43   7.47 6.8     ~ 435 0
19 CD-34 14724A PM* 20 55 07.9443524136 -34 08 08.007489384   10.74 10.05 10.17 9.774 F8 94 0
20 BD-05 5432b Pl 21 00 06.1968214728 -05 05 40.034944176           ~ 219 1
21 BD-00 4534 PM* 23 35 49.2850684896 +00 26 43.844566272   11.10   9.6   K0 77 0

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