Evolution in the Halo Masses of Isolated Galaxies between z ~ 1 and z ~ 0: From DEEP2 to SDSS

  title={Evolution in the Halo Masses of Isolated Galaxies between z ~ 1 and z ~ 0: From DEEP2 to SDSS},
  author={Charlie Conroy and Francisco Prada and Jeffrey A. Newman and Darren J. Croton and Alison L. Coil and Christopher J. Conselice and Michael C. Cooper and Marc Davis and S. M. Faber and Brian F. Gerke and Puragra Guhathakurta and Anatoly Klypin and David C. Koo and Ren-bin Yan},
  journal={The Astrophysical Journal},
We measure the evolution in the virial mass-to-light ratio(M_200/L_B) and virial-to-stellar mass ratio (M_200/M*) for isolated ~;L*galaxies between z~;1 and z~;0 by combining data from the DEEP2 GalaxyRedshift Survey and the Sloan Digital Sky Survey. Utilizing the motionsof satellite galaxies around isolated galaxies, we measure line-of-sightvelocity dispersions and derive dark matter halo virial masses for thesehost galaxies. At both epochs the velocity dispersionof satellitescorrelates with… 

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