Characterization of massive blue stars in NGC 55

Details Characterization of massive blue stars in NGC 55 Characterization of massive blue stars in NGC 55

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011hsa6.conf..530c&link_type=abstract

Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held

Astronomy and Astrophysics

Astrophysics

Scientific paper

Carrying out detailed analyses on massive blue stars further than the Milky Way is a demanding task, however it is feasible and the best way to comprehend the stellar evolution in environments with different metallicity. We present the first quantitative study performed on a massive blue star sample belonging to NGC~55, about 1.9 Mpc away. The project required to develop new automatic techniques, providing an objective spectroscopic analysis method. The results hint to a young population in NGC~55 with masses between about 20-50 Msol, and an average metallicity close to the Large Magellanic Cloud.

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