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DTSTART:20240101T000000
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DTSTART;TZID=UTC:20250213T143000
DTEND;TZID=UTC:20250213T153000
DTSTAMP:20260514T182249
CREATED:20250208T173307Z
LAST-MODIFIED:20250213T072823Z
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SUMMARY:CASSA Tea Talk 1: Revisiting the age scale of Galactic globular clusters
DESCRIPTION:Speaker: S M Masruk Uddin\, M2 Sudent (International Research Track)\, Observatoire de Paris; Research Intern\, Laboratory for Astrophysics Research and Instrumentation (LIRA); Paris Sciences et Lettres University (PSL)\, France. \nAbstract: Globular clusters (GCs) are critical for understanding the formation and evolution of the Milky Way. Their ages provide constraints on Galactic formation models. This study revisits the age scale of Galactic GCs using photometric data from the Hubble Space Telescope and spectroscopic data from the APOGEE survey. The SPInS (Stellar Parameters Inferred Systematically) framework was employed to infer ages through Bayesian analysis with Markov Chain Monte Carlo (MCMC). Initial tests on NGC 5053 refined the methodology but highlighted computational inefficiencies in SPInS\, particularly for large datasets. Despite these challenges\, the analysis produced robust age estimates consistent with the established age of the Milky Way. Anticipated optimizations to SPInS will allow scaling the methodology to all selected clusters\, enabling precise age determinations and enhancing our understanding of Galactic formation history. \nS M Masruk Uddin graduated from IUB with a major in physics and minor in computer science.
URL:https://cassa.site/event/tea-talk-1/
LOCATION:IUB Room BC2022\, Digital Classroom\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh
CATEGORIES:Tea Talk
ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2025/02/masruk.webp
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