Publications (10)
Detection of He II reionization in the SDSS quasar sample
T. Theuns, M. Bernardi, J. Frieman +4
The expansion of the Universe leads to a rapid drop in the mean hydrogen Ly-alpha opacity tau of the intergalactic medium (IGM), tau (1+z)^{3.8}, between redshifts 4 and 3. Measure…
A feature at z ~ 3.2 in the evolution of the Ly-alpha forest optical depth
M. Bernardi, R. K. Sheth, M. Subbarao +11
The effective optical depth in the Ly-alpha forest region of 1061 low-resolution QSO spectra drawn from the SDSS database decreases with decreasing redshift over the range 2.5 < z…
A search for the most massive galaxies: Double Trouble?
M. Bernardi, R. K. Sheth, R. C. Nichol +7
We describe the results of a search for galaxies with large (> 350 km/s) velocity dispersions. The largest systems we have found appear to be the extremes of the early-type galaxy…
Early-type galaxies in the SDSS
M. Bernardi, R. K. Sheth, J. Annis +28
A sample of nearly 9000 early-type galaxies, in the redshift range 0.01<z<0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral criteria. The sample…
Early-type galaxies in the SDSS. IV. Colors and chemical evolution
M. Bernardi, R. K. Sheth, J. Annis +5
The colors and chemical abundances of early-type galaxies at redshifts z<0.3 are studied using a sample of nearly 9000 galaxies, selected from the Sloan Digital Sky Survey using mo…
Early-type galaxies in the SDSS. III. The Fundamental Plane
M. Bernardi, R. K. Sheth, J. Annis +7
A magnitude limited sample of nearly 9000 early-type galaxies, in the redshift range 0.01 < z < 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral…
Additional Ultracool White Dwarfs Found in the Sloan Digital Sky Survey
H. C. Harris, E. Gates, G. Gyuk +12
We identify seven new ultracool white dwarfs discovered in the Sloan Digital Sky Survey (SDSS). The SDSS photometry, spectra, and proper motions are presented, and additional BVRI…
The velocity dispersion function of early-type galaxies
Ravi K. Sheth, M. Bernardi, P. L. Schechter +12
The distribution of early-type galaxy velocity dispersions, phi(sigma), is measured using a sample drawn from the SDSS database. Its shape differs significantly from that which one…
Early-type galaxies in the SDSS. I. The sample
M. Bernardi, R. K. Sheth, J. Annis +7
A sample of nearly 9000 early-type galaxies, in the redshift range 0.01 < z < 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral criteria. This pa…
Early-type galaxies in the SDSS. II. Correlations between observables
M. Bernardi, R. K. Sheth, J. Annis +7
A magnitude limited sample of nearly 9000 early-type galaxies, in the redshift range 0.01 < z < 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral…