HST STIS Spectroscopy of the Triple Nucleus of M31: Two Nested Disks in Keplerian Rotation around a Supermassive Black Hole

@article{Bender2005HSTSS,
  title={HST STIS Spectroscopy of the Triple Nucleus of M31: Two Nested Disks in Keplerian Rotation around a Supermassive Black Hole},
  author={R. Bender and J. Kormendy and G. Bower and R. Green and J. Thomas and A. Danks and T. Gull and J. Hutchings and C. Joseph and M. Kaiser and T. Lauer and C. Nelson and D. Richstone and D. Weistrop and B. Woodgate},
  journal={The Astrophysical Journal},
  year={2005},
  volume={631},
  pages={280-300}
}
  • R. Bender, J. Kormendy, +12 authors B. Woodgate
  • Published 2005
  • Physics
  • The Astrophysical Journal
  • We present Hubble Space Telescope (HST) spectroscopy of the nucleus of M31 obtained with the Space TelescopeImagingSpectrograph(STIS).SpectrathatincludetheCaiiinfraredtriplet(k ’ 85008)seeonlythered giant stars in the double brightness peaks P1 and P2. In contrast, spectra taken atk ’ 3600 51008 are sensitive to thetinybluenucleusembeddedinP2,thelowersurfacebrightnessnucleusofthegalaxy.P2 hasaK-typespectrum, but we find that the blue nucleus has an A-type spectrum: it shows strong Balmer… CONTINUE READING
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