Stellar Populations in M31 from Broad-band Photometry

Details Stellar Populations in M31 from Broad-band Photometry Stellar Populations in M31 from Broad-band Photometry

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..277..199t&link_type=abstract

Tracing the Ancestry of Galaxies (on the land of our ancestors), Proceedings of the International Astronomical Union, IAU Sympos

Mathematics

Logic

Galaxies: Individual (M 31), Galaxies: Stellar Content, Galaxies: Structure, Galaxies: Photometry, Ism: Dust, Extinction

Scientific paper

Due to its proximity, size, complex structure and high inclination angle, M31 offers an excellent opportunity for studying galactic structures outside the Milky Way and for drawing implications for their cosmological origin. We have studied the stellar populations of M 31 using the Sloan Digital Sky Survey (SDSS) photometry and the Spitzer far-infrared (FIR) mappings of dust. Combining these data, we have constructed a 3-dimensional model of the galaxy, laying constraints on the intrinsic (dust-free) properties of the galaxy and its stellar populations: their apparent and intrinsic luminosities, luminosity distributions, colours, shapes and sizes. We have interpreted the derived spectral energy distributions with synthetic stellar populations created with the Starburst99 software, in order to constrain the ages and masses of the stellar components.

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