Monitoring survey of pulsating giant stars in the Local Group dwarf galaxies

الهام صارمی

 پژوهشکده نجوم پژوهشگاه دانش های بنیادی IPM

Abstract: The population of nearby dwarf galaxies in the Local Group constitutes a complete galactic environment, perfect suited for studying the connection between stellar populations and galaxy evolution. In this study, we have conducted an optical monitoring survey of the majority of dwarf galaxies in the Local Group, with the Isaac Newton Telescope (INT), to identify long period variable stars (LPVs). These stars are at the end points of their evolution and therefore their luminosity can be directly translated into their birth mass; this enables us to reconstruct the star formation history. LPVs are also the main source of dust; in combination with Spitzer Space Telescope images at mid-IR wavelengths we will quantify the mass loss, and provide a detailed map of the mass feedback into the interstellar medium.

یکشنبه 5 اسفند 1397، ساعت 15:00

دانشکده فیزیک، طبقه همکف کلاس فیزیک 1