TOI-1338: TESS' First Transiting Circumbinary Planet
Veselin B. Kostov
,
Jerome A. Orosz
,
Adina D. Feinstein
,
William F. Welsh
,
Wolf Cukier
,
Nader Haghighipour
,
Billy Quarles
,
David V. Martin
,
Benjamin T. Montet
,
Guillermo Torres
,
Amaury H. M. J. Triaud
,
Thomas Barclay
,
Patricia Boyd
,
Cesar Briceno
,
Andrew Collier Cameron
,
Alexandre C. M. Correia
,
Emily A. Gilbert
,
Samuel Gill
,
Michaël Gillon
,
Jacob Haqq-Misra
,
Coel Hellier
,
Courtney Dressing
,
Daniel C. Fabrycky
,
Gabor Furesz
,
Jon M. Jenkins
,
Stephen R. Kane
,
Ravi Kopparapu
,
Vedad Kunovac Hodžić
,
David W. Latham
,
Nicholas Law
,
Alan M. Levine
,
Gongjie Li
,
Chris Lintott
,
Jack J. Lissauer
,
Andrew W. Mann
,
Tsevi Mazeh
,
Rosemary Mardling
,
Pierre F. L. Maxted
,
Nora Eisner
,
Francesco Pepe
,
Joshua Pepper
,
Don Pollacco
,
Samuel N. Quinn
,
Elisa V. Quintana
,
Jason F. Rowe
,
George Ricker
,
Mark E. Rose
,
S. Seager
,
Alexandre Santerne
(1)
,
Damien Ségransan
,
Donald R. Short
,
Jeffrey C. Smith
,
Matthew R. Standing
,
Andrei Tokovinin
,
Trifon Trifonov
,
Oliver Turner
,
Joseph D. Twicken
,
Stéphane Udry
,
Roland Vanderspek
,
Joshua N. Winn
,
Eric T. Wolf
,
Carl Ziegler
,
Peter Ansorge
,
Frank Barnet
,
Joel Bergeron
,
Marc Huten
,
Giuseppe Pappa
,
Timo van Der Straeten
Veselin B. Kostov
- Function : Author
Jerome A. Orosz
- Function : Author
Adina D. Feinstein
- Function : Author
William F. Welsh
- Function : Author
Wolf Cukier
- Function : Author
Nader Haghighipour
- Function : Author
Billy Quarles
- Function : Author
- PersonId : 771398
- ORCID : 0000-0002-9644-8330
David V. Martin
- Function : Author
Benjamin T. Montet
- Function : Author
Guillermo Torres
- Function : Author
Amaury H. M. J. Triaud
- Function : Author
Thomas Barclay
- Function : Author
- PersonId : 771374
- ORCID : 0000-0001-7139-2724
Patricia Boyd
- Function : Author
Cesar Briceno
- Function : Author
Andrew Collier Cameron
- Function : Author
Alexandre C. M. Correia
- Function : Author
Emily A. Gilbert
- Function : Author
Samuel Gill
- Function : Author
Michaël Gillon
- Function : Author
- PersonId : 756643
- ORCID : 0000-0003-1462-7739
Jacob Haqq-Misra
- Function : Author
- PersonId : 797420
- ORCID : 0000-0003-4346-2611
Coel Hellier
- Function : Author
- PersonId : 805180
- ORCID : 0000-0002-3439-1439
Courtney Dressing
- Function : Author
Daniel C. Fabrycky
- Function : Author
Gabor Furesz
- Function : Author
Jon M. Jenkins
- Function : Author
Stephen R. Kane
- Function : Author
Ravi Kopparapu
- Function : Author
- PersonId : 797421
- ORCID : 0000-0002-5893-2471
Vedad Kunovac Hodžić
- Function : Author
David W. Latham
- Function : Author
Nicholas Law
- Function : Author
- PersonId : 764981
- ORCID : 0000-0001-9380-6457
Alan M. Levine
- Function : Author
Gongjie Li
- Function : Author
- PersonId : 817700
- ORCID : 0000-0001-8308-0808
Chris Lintott
- Function : Author
Jack J. Lissauer
- Function : Author
Andrew W. Mann
- Function : Author
Tsevi Mazeh
- Function : Author
Rosemary Mardling
- Function : Author
Pierre F. L. Maxted
- Function : Author
Nora Eisner
- Function : Author
Francesco Pepe
- Function : Author
Joshua Pepper
- Function : Author
- PersonId : 765529
- ORCID : 0000-0002-3827-8417
Don Pollacco
- Function : Author
Samuel N. Quinn
- Function : Author
Elisa V. Quintana
- Function : Author
Jason F. Rowe
- Function : Author
George Ricker
- Function : Author
- PersonId : 755655
- ORCID : 0000-0003-2058-6662
Mark E. Rose
- Function : Author
S. Seager
- Function : Author
- PersonId : 768500
- ORCID : 0000-0002-6892-6948
Damien Ségransan
- Function : Author
Donald R. Short
- Function : Author
Jeffrey C. Smith
- Function : Author
Matthew R. Standing
- Function : Author
Andrei Tokovinin
- Function : Author
Trifon Trifonov
- Function : Author
- PersonId : 760366
- ORCID : 0000-0002-0236-775X
Oliver Turner
- Function : Author
Joseph D. Twicken
- Function : Author
Stéphane Udry
- Function : Author
- PersonId : 755482
- ORCID : 0000-0001-7576-6236
Roland Vanderspek
- Function : Author
- PersonId : 755656
- ORCID : 0000-0001-6763-6562
Joshua N. Winn
- Function : Author
Eric T. Wolf
- Function : Author
Carl Ziegler
- Function : Author
- PersonId : 803503
- ORCID : 0000-0002-0619-7639
Peter Ansorge
- Function : Author
Frank Barnet
- Function : Author
Joel Bergeron
- Function : Author
Marc Huten
- Function : Author
Giuseppe Pappa
- Function : Author
Timo van Der Straeten
- Function : Author
Abstract
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.