Initial Results from MOSFIRE
Nick Konidaris

On 4 April 2012 the Multi-Object Spectrometer For Infrared Exploration (MOSFIRE) achieved first light at Keck Observatory. Compared to the first generation infrared spectrograph on Keck, MOSFIRE is over 100x more efficient for survey work. MOSFIRE excels in studying emission features redshifted past 1 ┬Ám in wavelength. Among a range of commissioning verification work, I used MOSFIRE to survey the ionizing sources of blue galaxies at redshifts greater than 0.5. In the past few years, because of a lack of instruments like MOSFIRE, a variety of ad-hoc observational diagnostic tools were developed to determine ionization source. In this talk I first describe the assembly and commissioning of MOSFIRE, and then the use of MOSFIRE to studies of galaxy formation. I'll conclude my talk with discussions of the future of near-infrared spectroscopy on thirty-meter telescopes.