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Monash Astro Seminars
3pm, Tuesday 11 August 2009; Maths, Rm. 345
Max Spolaor
"The mass-metallicity gradient relation of early-type galaxies"
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I will present recent results on stellar population gradients at large galactocentric radii for a sample of early-type galaxies covering a broad mass range, i.e. from Fornax and Virgo cluster dwarf ellipticals to brightest cluster/group galaxies. Focusing on the newly discovered (Spolaor et al. 2009) correlation between metallicity gradients and galaxy mass, I will examine how the interplay between dissipational processes and feedback mechanisms has driven the chemical evolutionary history of these early-type galaxies. The analysis of spatially resolved stellar population radial profiles of age, metallicity and alpha-elements abundance ratio at galactocentric radii as large as 2 times the galaxy effective radius, allows us to investigate the history of almost 60\% of a galaxy total stellar mass and to examine the effects of local and global mechanisms of galaxy formation. The interpretation of the results in comparison with competing model predictions will provide new insights on the formation and chemodynamical evolutionary history of early-type galaxies.
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Please email all enquiries to daniel.price@sci.monash.edu.au or rosemary.mardling@sci.monash.edu.au
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