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| Paper: |
The Initial Mass Function in the Outskirts of M83 |
| Volume: |
477, Galaxy Mergers in an Evolving Universe |
| Page: |
3 |
| Authors: |
Koda, J.; Yagi, M.; Boissier, S.; Gil de Paz, A.; Imanishi, M.; Meyer, J. D.; Madore, B. F.; Thilker, D. A. |
| Abstract: |
Our new Subaru Hα observations enable the first complete census of very young stellar clusters over
the extended ultraviolet (XUV) disk of M83.
Combining Subaru and GALEX data with a stellar population synthesis model,
we find that the standard Salpeter IMF and a simple aging effect explain
the counts of FUV-bright and Hα-bright clusters with masses >103☉.
We assumed instantaneous cluster formation and a constant cluster formation rate over the XUV disk.
The Subaru Prime Focus Camera (Suprime-Cam) covers a large area even
outside the XUV disk — far beyond the detection limit of the HI gas.
This enables us to statistically separate the stellar clusters in the disk from background
contamination. |
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