Superluminous Spiral Galaxies

  title={Superluminous Spiral Galaxies},
  author={Patrick Ogle and Lauranne Lanz and Cyril Nader and George Helou},
  journal={arXiv: Astrophysics of Galaxies},
We report the discovery of spiral galaxies that are as optically luminous as elliptical brightest cluster galaxies, with r-band monochromatic luminosity L_r=8-14L* (4.3-7.5E44 erg/s). These super spiral galaxies are also giant and massive, with diameter D=57-134 kpc and stellar mass M_stars=0.3-3.4E11 M_sun. We find 53 super spirals out of a complete sample of 1616 SDSS galaxies with redshift z 8L*. The closest example is found at z=0.089. We use existing photometry to estimate their stellar… 

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