Browsing FAS Scholarly Articles by Keyword "distance scale"

Now showing items 1-3 of 3

    • The clustering of luminous red galaxies in the Sloan Digital Sky Survey imaging data 

      Padmanabhan, N.; Schlegel, D. J.; Seljak, U.; Makarov, A.; Bahcall, N. A.; Blanton, M. R.; Brinkmann, J.; Eisenstein, D. J.; Finkbeiner, Douglas; Gunn, J. E.; Hogg, D. W.; Ivezic, Z.; Knapp, G. R.; Loveday, J.; Lupton, R. H.; Nichol, R. C.; Schneider, D. P.; Strauss, M. A.; Tegmark, M.; York, D. G. (Oxford University Press (OUP), 2007)
      We present the 3D real-space clustering power spectrum of a sample of ∼600 000 luminous red galaxies measured by the Sloan Digital Sky Survey, using photometric redshifts. These galaxies are old, elliptical systems with ...

    • Toward a New Geometric Distance to the Active Galaxy NGC 4258. II. Centripetal Accelerations and Investigation of Spiral Structure 

      Humphreys, E. M. L.; Reid, Mark Jonathan; Greenhill, Lincoln J.; Moran, James M.; Argon, Alice L. (American Astronomical Society, 2008)
      We report measurements of centripetal accelerations of maser spectral components of NGC 4258 for 51 epochs spanning 1994 to 2004. This is the second paper of a series, in which the goal is the determination of a new geometric ...

    • Toward a New Geometric Distance To the Active Galaxy NGC 4258. III. Final Results and The Hubble Constant 

      Humphreys, E. M. L.; Reid, Mark Jonathan; Moran, James M.; Greenhill, Lincoln Jared; Argon, Alice L. (American Astronomical Society, 2013)
      We report a new geometric maser distance estimate to the active galaxy NGC 4258. The data for the new model are maser line-of-sight (LOS) velocities and sky positions from 18 epochs of very long baseline interferometry ...