Spatially resolved spectra of silicate dust around Alpha Orionis

Details Spatially resolved spectra of silicate dust around Alpha Orionis Spatially resolved spectra of silicate dust around Alpha Orionis

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...404..328s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 404, no. 1, p. 328-332.

Astronomy and Astrophysics

Astrophysics

21

Astronomical Spectroscopy, Cosmic Dust, Silicon, Stellar Envelopes, Emission Spectra, Point Spread Functions, Stellar Evolution

Scientific paper

We have observed Alpha Orionis with a 10 micron long-slit spectrometer. By applying maximum entropy reconstruction techniques, we have spatially resolved the silicate emission from the circumstellar shell. The emissivity derived from our silicate spectrum compares favorably with published emissivity profiles describing circumstellar silicates. The lack of silicate emission in the direction of the central star suggests that the circumstellar dust may not be distributed in a spherical shell.

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