December 26 Tue 16:00-17:00 NAOJ Seminar
Large Seminar Room in Subaru Building and Zoom(hybrid)
December 27 Wed 10:30-12:00 SOKENDAI Colloquium
Large Seminar Room in Subaru Building and Zoom (hybrid)
詳細は下記からご覧ください。
=============== December 26 Tue ===============
Campus：Mitaka
Seminar：NAOJ Seminar
Regularly Scheduled/Sporadic：Sporadic
Date and time：December 26, 2023 16:00-17:00
Place：Zoom/Large Seminar Room (hybrid)
Speaker：Prof. Daniel Jontof-Hutter
Affiliation：University of the Pacific
Title：Three-body resonances in Multitransiting Exoplanetary Systems
Abstract:Planet formation models with convergent migration show that planet pairs are easily trapped in mean motion resonances. Yet in Kepler’s multi-planet systems, orbital period ratios near resonance are rare.
Furthermore, those pairs with commensurate orbital period ratios, the measurement uncertainties of orbital eccentricities make it difficult to show that any planet pair is in libration.
Three-body resonances, however, may be easier to identify. Several systems have been shown to be in 3-body libration. Using transit timing data, we explore dynamical simulations of Kepler systems that are potentially in three-body resonances.
We further search for three-body resonances among all triples within the Kepler dataset, in search of additional systems in libration. Finally, we estimate the fraction of planetary systems with three-body resonant chains.
Facilitator
-Name：Shinobu Ozaki
=============== December 27 wed===============
Campus：Mitaka
Seminar：SOKENDAI Colloquium
Regularly Scheduled/Sporadic：Regular
Date and time：December 27, 2023 10:30-12:00
Place：Large Seminar Room in Subaru Building and Zoom
Speaker: Ryota Ikeda
Affiliation: SOKENDAI 3rd year (D1) (Supervisor: Daisuke Iono, Masayuki Tanaka, Takuma Izumi)
Title: Study of spatial extent and haloes of [CII] line emission in star-forming galaxies at z=4-6
Speaker: Itsuki Ogami
Affiliation: SOKENDAI 4th year (D2) (Supervisor: Wako Aoki, Hisanori Furusawa, Miho N. Ishigaki)
Title: Probing the stellar halo in M33 using Subaru/HSC
Facilitator
-Name：Matsuda, Graduate Student Affairs Unit