Browsing by Author/Contributor "Li, M. P."

Now showing items 1-3 of 3

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

    Li, Aigen; Li, M. P.; Kohler, M. (American Astronomical Society, 2010)
    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, ...

  • On buckyonions as an interstellar grain component 

    Li, Aigen; Chen, J. H.; Li, M. P.; Shi, Q. J.; Wang, Y. J. (arXiv, 2008)
    The carrier of the 2175 Angstrom interstellar extinction feature remains unidentified since its first detection over 40 years ago. In recent years carbon buckyonions have been proposed as a carrier of this feature, based ...

  • On the Anomalous Silicate Emission Features of AGNs: A Possible Interpretation Based on Porous Dust 

    Li, M. P.; Shi, Q. J.; Li, Aigen (arXiv, 2008)
    The recent Spitzer detections of the 9.7 micron Si--O silicate emission in type 1 AGNs provide support for the AGN unification scheme. The properties of the silicate dust are of key importance to understanding the physical, ...