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Imaging of NGC 5907's stellar stream

  • Seppo Laine (a1), Carl J. Grillmair (a1), David Martínez–Delgado (a2), Aaron J. Romanowsky (a3), Peter L. Capak (a1), Richard G. Arendt (a4), Matthew L. N. Ashby (a5), James E. Davies (a6), Steven R. Majewski (a7) and R. Jay GaBany (a8)...

Abstract

We have obtained deep g, r, and i-band Subaru and ultra-deep 3.6 μm IRAC images of parts of the multiply-wrapped stellar stream around the nearby edge-on galaxy NGC 5907. We have fitted the surface brightness measurements of the stream with FSPS stellar population synthesis models to derive the metallicity and age of the brightest parts of the stream. The resulting relatively high metallicity ([Fe/H] = −0.3) is consistent with a major merger scenario but a satellite accretion event cannot be ruled out.

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References

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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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