Mid Infrared Spectroscopy of Beta-Pictoris - Constraints on the Dust Grain Size

Details Mid Infrared Spectroscopy of Beta-Pictoris - Constraints on the Dust Grain Size Mid Infrared Spectroscopy of Beta-Pictoris - Constraints on the Dust Grain Size

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.265l..41a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 265, NO. 4/DEC15, P. L41, 1993

Astronomy and Astrophysics

Astronomy

37

Circumstellar Matter - Stars: Individual: Β Pic - Dust, Extinction - Infrared: Stars

Scientific paper

We present 8-13 μm spectroscopy of Beta Pictoris which confirms the presence of silicate emission in its infrared excess, as earlier reported on the basis of narrow-band photometry, and indicates a similarity with cometary dust. The spectral form of the infrared excess allows us to place an upper limit of 2-3 μm on the size of the emitting grains in the circumstellar disc.

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