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Evidence for a Long-Standing Top-Heavy IMF in the Central Parsec of the Galaxy
H. Maness, F. Martins, S. Trippe +10
We classify 329 late-type giants within 1 parsec of Sgr A*, using the adaptive optics integral field spectrometer SINFONI on the VLT. These observations represent the deepest spect…
Imaging of the Stellar Population of IC10 with Laser Guide Star Adaptive Optics and the Hubble Space Telescope
William D. Vacca, Christopher D. Sheehy, James R. Graham
We present adaptive optics (AO) images of the central starburst region of the dwarf irregular galaxy IC10. The Keck 2 telescope laser guide star was used to achieve near diffractio…
Constraining the Adaptive Optics Point-Spread Function in Crowded Fields: Measuring Photometric Aperture Corrections
Christopher D. Sheehy, Nate McCrady, James R. Graham
The point-spread function (PSF) of an adaptive optics (AO) system is often poorly known. This ignorance can lead to significant systematic errors in photometry. Since the degree of…