NGC 5907 revisited: a stellar halo formed by cannibalism?

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We report on further observations of the luminous halo of NGC 5907. New V, I and B deep photometry confirms the existence of an extended stellar halo redder than the disk. Our data are consistent with a faint halo, or very thick disk, composed of a metal-rich old stellar population. We propose that it could be the remnant of a merged small elliptical, and we support our hypothesis with N-body simulations.
4 pages, 6 figures, accepted in Astronomy and Astrophysics Letters

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Astrophysics

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https://dspace.dare.co.zw/handle/123456789/72941

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