2020AJ....159..253K

Query : 2020AJ....159..253K

2020AJ....159..253K - Astron. J., 159, 253-253 (2020/June-0)

TOI-1338: TESS' first transiting circumbinary planet.

KOSTOV V.B., OROSZ J.A., FEINSTEIN A.D., WELSH W.F., CUKIER W., HAGHIGHIPOUR N., QUARLES B., MARTIN D.V., MONTET B.T., TORRES G., TRIAUD A.H.M.J., BARCLAY T., BOYD P., BRICENO C., CAMERON A.C., CORREIA A.C.M., GILBERT E.A., GILL S., GILLON M., HAQQ-MISRA J., HELLIER C., DRESSING C., FABRYCKY D.C., FURESZ G., JENKINS J.M., KANE S.R., KOPPARAPU R., HODZIC V.K., LATHAM D.W., LAW N., LEVINE A.M., LI G., LINTOTT C., LISSAUER J.J., MANN A.W., MAZEH T., MARDLING R., MAXTED P.F.L., EISNER N., PEPE F., PEPPER J., POLLACCO D., QUINN S.N., QUINTANA E.V., ROWE J.F., RICKER G., ROSE M.E., SEAGER S., SANTERNE A., SEGRANSAN D., SHORT D.R., SMITH J.C., STANDING M.R., TOKOVININ A., TRIFONOV T., TURNER O., TWICKEN J.D., UDRY S., VANDERSPEK R., WINN J.N., WOLF E.T., ZIEGLER C., ANSORGE P., BARNET F., BERGERON J., HUTEN M., PAPPA G. and VAN DER STRAETEN T.

Abstract (from CDS):

We report the detection of the first circumbinary planet (CBP) found by Transiting Exoplanet Survey Satellite (TESS). The target, a known eclipsing binary, was observed in sectors 1 through 12 at 30 minute cadence and in sectors 4 through 12 at 2 minute cadence. It consists of two stars with masses of 1.1 M☉ and 0.3 M☉ on a slightly eccentric (0.16), 14.6 day orbit, producing prominent primary eclipses and shallow secondary eclipses. The planet has a radius of ∼6.9 R⊕ and was observed to make three transits across the primary star of roughly equal depths (∼0.2%) but different durations-a common signature of transiting CBPs. Its orbit is nearly circular (e ≃ 0.09) with an orbital period of 95.2 days. The orbital planes of the binary and the planet are aligned to within ∼1°. To obtain a complete solution for the system, we combined the TESS photometry with existing ground-based radial-velocity observations in a numerical photometric-dynamical model. The system demonstrates the discovery potential of TESS for CBPs and provides further understanding of the formation and evolution of planets orbiting close binary stars.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanet astronomy - Eclipsing binary stars

Simbad objects: 11

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Number of rows : 11
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 UCAC4 153-007137 * 06 08 25.7614027008 -59 32 54.423703788     16.455     ~ 1 0
2 TOI-1338b Pl 06 08 31.9675204416 -59 32 28.081703112           ~ 27 0
3 TOI-1338 SB* 06 08 31.9675204416 -59 32 28.081703112   12.537 11.975     ~ 74 0
4 Kepler-453 EB* 18 52 57.9087897864 +46 22 42.553340616           G5 90 0
5 Kepler-38 EB* 19 07 19.2812772264 +42 16 45.121212624           ~ 107 1
6 Kepler-413b Pl 19 14 02.5619727768 +51 09 45.019100160           ~ 66 0
7 Kepler-16b Pl 19 16 18.1758378936 +51 45 26.782726104           ~ 178 1
8 Kepler-16 SB* 19 16 18.1758378936 +51 45 26.782726104   12.1   11.90   K7V 274 1
9 Kepler-47 EB* 19 41 11.4983203032 +46 55 13.707336288           ~ 185 1
10 Kepler-34b Pl 19 45 44.5974898536 +44 38 29.610983076           ~ 115 1
11 Kepler-64 EB* 19 52 51.6169691968 +39 57 18.370395541           F0 107 1

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