The Nuclear Spectrum of M87

@article{Tsvetanov1998TheNS,
  title={The Nuclear Spectrum of M87},
  author={Zlatan I. Tsvetanov and George F. Hartig and Holland C. Ford and Gerard A. Kriss and Michael A. Dopita and Linda Lou Dressel and Richard J. Harms},
  journal={arXiv: Astrophysics},
  year={1998}
}
The nuclear spectrum of M87 covering the Ly_a-H_a wavelength range was obtained with the HST Faint Object Spectrograph (FOS) trough a 0.21 arcsec aperture. Contrary to some previous claims, a single power law (F(nu)~nu^(-a)) can not reproduce the observed continuum shape and at least a broken power law is require for a good fit (a = 1.75 and 1.41 shortward and longward of the break at ~4500 A). We detect a set of broad (FWHM ~ 400 km/s) absorption lines arising in the gas associated with M87… 

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References

SHOWING 1-2 OF 2 REFERENCES

The Dusty Emission Filaments of M87

Emission-line and continuum images show that the Hα+[N II] filaments in M87 have a double stranded or ribbon-like morphology and that they are dusty. Spectroscopy of the filaments shows smoothly

A pJ,413,531 (SFK 93) T hom son

  • 1993