M82 at the Highest Resolution

Details M82 at the Highest Resolution M82 at the Highest Resolution

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910001v&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #100.01; Bulletin of the American Astronomical Society,

Physics

Optics

Scientific paper

We will present the highest spatial resolution images ever obtained of the central region of the nearby prototypical starburst galaxy M82. The images were acquired with the ACS/HRC on board HST, in the equivalent of the U, B, V, I, and H α filters, and with the Laser Guide Star Adaptive Optics facility and the NIRC2 camera at the Keck Observatory in the H and K filters. The images cover the sites of the most recent star formation activity. We are using these images to investigate the properties of the massive Super Star Clusters (SSCs) in M82. Specifically, we examine the spectral energy distributions, light profiles, sizes, and shapes of the SSCs. By combining these with spectral synthesis models and published measurements of the velocity dispersions obtained from ground-based spectroscopy, we derive masses, extinctions, and ages for the SSCs and investigate possible mass segregation and variations in the Initial Mass Function.

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