The unusual box-shaped elliptical (?) galaxy IC 3370

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Elliptical Galaxies, Galactic Rotation, Galactic Structure, Disk Galaxies, Luminosity, Spectrum Analysis

Scientific paper

IC 3370 is noted by this photometric and kinematic study to be more like the bulges of disk galaxies than elliptical galaxies; seen nearly edge-on, it is an S0pec rather than an elliptical galaxy, as originally classified. IC 3370 is also found to be a cylindrical rotator above the plane of the disk to a degree that is far in excess of previous observations in box- or peanut-shaped bulges. In addition, it exhibits a large amount of isophotal twisting throughout the bulge, which is not easily reconciled with an oblate model's nearly edge-on view, but is suggestive of a merger or tidal-encounter history.

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