On the external origin for dust in elliptical galaxies

Details On the external origin for dust in elliptical galaxies On the external origin for dust in elliptical galaxies

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.249..779f&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 249, April 15, 1991, p. 779-787.

Astronomy and Astrophysics

Astrophysics

58

Cosmic Dust, Elliptical Galaxies, Cooling Flows (Astrophysics), Infrared Astronomy Satellite, Shell Galaxies, Spatial Distribution

Scientific paper

Large samples of elliptical galaxies, observed at high signal-to-noise ratio with CCDs, are used with ADDSCAN 100 micron fluxes from IRAS to examine evidence for the external origin of dust in these galaxies. Four small sets of galaxies are picked which show features strongly indicative of a merger, that is, infalling H I gas, extensive dust lanes, and kinematically peculiar cores and shells. Though some counterexamples exist, it is shown that the dust and isophotal properties are consistent with the current merger model for these galaxies.

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