The counterrotation of gas and stars in the dust lane elliptical NGC 5898

Details The counterrotation of gas and stars in the dust lane elliptical NGC 5898 The counterrotation of gas and stars in the dust lane elliptical NGC 5898

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...329..102b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 329, June 1, 1988, p. 102-106.

Astronomy and Astrophysics

Astrophysics

29

Astronomical Photometry, Cosmic Dust, Elliptical Galaxies, Interstellar Gas, Stellar Rotation, Stellar Spectra, Absorption Spectra, Angular Momentum, Line Spectra

Scientific paper

In this paper it is shown that in the spectrum of the elliptical galaxy with inner dust ring NGC 5898 the emission lines are inclined in the direction opposite to that of the absorption lines. Since the projected major axes of the stellar and gaseous component are coincident, the most likely interpretation of the phenomenon is that the angular momenta of the two components are antiparallel. This implies that the dust ring is a second event in the history of NGC 5898 and reinforces the idea that the dust lanes in ellipticals are generally the result of an acquisition.

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