IC 1689: S0 galaxy with inner polar disk.

Details IC 1689: S0 galaxy with inner polar disk. IC 1689: S0 galaxy with inner polar disk.

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...319..430h&link_type=abstract

Astronomy and Astrophysics, v.319, p.430-434

Astronomy and Astrophysics

Astrophysics

14

Galaxies: Individual: Ic 1689, Kinematics And Dynamics, Interactions, Peculiar, Spectroscopy

Scientific paper

The results of spectroscopic observations of the S0 galaxy IC 1689 are given. The radial velocity curves constructed from the measurements of Hα and [NII]λ6583 lines show that in the galaxy interior there is a gas disk (r=~3kpc) rotating around the axis placed in the main plane of the galaxy (polar disk). Active star formation occurs in the outer part of the disk (in the ring). Both Hα and [NII]λ6583 emission lines are observed here. Only collisionally excited [NII] radiates in the inner regions of the disk.

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