Removal of dust from spiral galaxies

Details Removal of dust from spiral galaxies Removal of dust from spiral galaxies

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...240..259f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 240, no. 2, Dec. 1990, p. 259-261.

Astronomy and Astrophysics

Astrophysics

14

Cosmic Dust, Interstellar Matter, Spiral Galaxies, Abundance, Astronomical Models, Halos, Luminosity

Scientific paper

The discussion of the radiative and gravitational forces acting on dust grains, developed by Barsella et al. (1989) for NGC 3198, is extended to a larger sample of spiral galaxies. Qualitatively homogeneous results are obtained for all the galaxies, with a selective expulsion of grains and the presence of equilibrium positions in the halo. The most relevant parameter to the process is the central galactic luminosity. The possibility of expelling dust material continuously from the production regions of disk galaxies has interesting consequences for the circulation of grains in the same parent galaxy and for grain abundances in the intergalactic medium.

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