Results 71 to 80 of about 74,778 (164)

Observations and Studies on the Transiting Systems HAT-P-36, XO-2 and WASP-76

open access: yesThe Astronomical Journal
We conducted photometric observations for transit events of three exoplanetary systems HAT-P-36, XO-2 and WASP-76 using the 1 m and 2.4 m telescopes at Yunnan Observatories and the 0.85 m telescope at National Astronomical Observatories of China.
Weilong Wang   +10 more
doaj   +1 more source

A Combined TESS and Ground-based Study of Transit Timing Variations in HAT-P-16, TOI-1516 and TOI-2046 Systems

open access: yesThe Astronomical Journal
We present new results for the hot Jupiters HAT-P-16b, TOI-1516b, and TOI-2046b, based on photometric observations collected using both space- and ground-based facilities.
E. Sonbas   +7 more
doaj   +1 more source

Updated Masses for the Gas Giants in the Eight-planet Kepler-90 System Via Transit-timing Variation and Radial Velocity Observations

open access: yesThe Astronomical Journal
The eight-planet Kepler-90 system exhibits the greatest multiplicity of planets found to date. All eight planets are transiting and were discovered in photometry from the NASA Kepler primary mission. The two outermost planets, g ( P _g  = 211 days) and h
David E. Shaw   +30 more
doaj   +1 more source

Detailed Architecture of the L 98-59 System and Confirmation of a Fifth Planet in the Habitable Zone

open access: yesThe Astronomical Journal
The L 98-59 system, identified by TESS in 2019, features three transiting exoplanets in compact orbits of 2.253, 3.691, and 7.451 days around an M3V star, with an outer 12.83 day nontransiting planet confirmed in 2021 using ESPRESSO.
Charles Cadieux   +14 more
doaj   +1 more source

APPLICATION OF TRANSIT TIMING VARIATION METHOD (TTV) TO EXOPLANET SYSTEM TrES-3

open access: yes, 2018
On the basis of the original photometricdata, the light curves of several transits in the exoplanet system TrES-3 were simulated by Monte Carlo method.Using these curves, the estimates of precise values of mid-transit time were calculated to assess the possibility offinding new planets by timing method in already known exoplanet systems using ground ...
openaire   +1 more source

TOI-1408: Discovery and Photodynamical Modeling of a Small Inner Companion to a Hot Jupiter Revealed by Transit Timing Variations

open access: yesThe Astrophysical Journal Letters
We report the discovery and characterization of a small planet, TOI-1408 c, on a 2.2 day orbit located interior to a previously known hot Jupiter, TOI-1408 b ( P = 4.42 days, M = 1.86 ± 0.02 M _Jup , R = 2.4 ± 0.5 R _Jup ) that exhibits grazing transits.
Judith Korth   +62 more
doaj   +1 more source

Kepler-1624b Has No Significant Transit Timing Variations

open access: yesThe Astronomical Journal
It is relatively rare for gas giant planets to have resonant or near-resonant companions, but these systems are particularly useful for constraining planet formation and migration models. In this study, we examine Kepler-1624b, a sub-Saturn orbiting an M
Haedam Im   +11 more
doaj   +1 more source

Modeling the Solar System. I. Characterization Limits from Analytic Timing Variations

open access: yesThe Planetary Science Journal
Planetary systems with multiple transiting planets are beneficial for understanding planet occurrence rates and system architectures. Although we have yet to find a solar system (SS) analog, future surveys may detect multiple terrestrial planets ...
Bethlee M. Lindor, Eric Agol
doaj   +1 more source

TOI-2015 b: A Warm Neptune with Transit Timing Variations Orbiting an Active Mid-type M Dwarf

open access: yesThe Astronomical Journal
We report the discovery of a close-in ( P _orb = 3.349 days) warm Neptune with clear transit timing variations (TTVs) orbiting the nearby ( d = 47.3 pc) active M4 star, TOI-2015.
Sinclaire E. Jones   +31 more
doaj   +1 more source

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