• Anomalous Silicate Dust Emission in the Type 1 Liner Nucleus of M81 

    Li, Aigen; Li, M. P.; Kohler, M. (American Astronomical Society, 2010-06)
    We report the detection and successful modeling of the unusual 9.7μm Si-O stretching silicate emission feature in the type 1 (i.e., face-on) LINER nucleus of M81. Using the Infrared Spectrograph (IRS) instrument on Spitzer, ...
  • The Calibration of Mid-Infrared Star Formation Rate Indicators 

    Li, Aigen (American Astronomical Society, 2007-09)
    With the goal of investigating the degree to which the MIR emission traces the SFR, we analyze Spitzer 8 and 24 m data of star- forming regions in a sample of 33 nearby galaxies with available HST NICMOS images in the Pa ...