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Stellar Populations in the Central 0.5 pc of the Galaxy II: The Initial Mass Function
Jessica R. Lu, Tuan Do, Andrea M. Ghez +3
The supermassive black hole at the center of the Milky Way plays host to a massive, young cluster that may have formed in one of the most inhospitable environments in the Galaxy. W…
Stellar Populations in the Central 0.5 pc of the Galaxy I: A New Method for Constructing Luminosity Functions and Surface-Density Profiles
Tuan Do, Jessica R. Lu, Andrea M. Ghez +5
We present new high angular resolution near-infrared spectroscopic observations of the nuclear star cluster surrounding the Milky Way's central supermassive black hole. Using the i…
Discovery of Precursor LBV Outbursts in Two Recent Optical Transients: The Fitfully Variable Missing Links UGC 2773-OT and SN 2009ip
Nathan Smith, Adam A. Miller, Weidong Li +11
We present progenitor-star detections, light curves, and optical spectra of SN2009ip and the 2009 optical transient in UGC2773 (U2773-OT), which were not genuine SNe. Precursor var…