10.4k citations · 30k across the 143 of their papers we have counts for
14 papers · 2 filters
Average spectra of massive galaxies in the SDSS
Daniel J. Eisenstein, David W. Hogg, Masataka Fukugita +17
We combine Sloan Digital Sky Survey spectra of 22,000 luminous, red, bulge-dominated galaxies to get high S/N average spectra in the rest-frame optical and ultraviolet (2600A to 70…
Determining the GRB (Redshift, Luminosity)-Distribution Using Burst Variability
Timothy Donaghy, Donald Q. Lamb, Daniel E. Reichart +1
We use the possible Cepheid-like luminosity estimator for the long-duration gamma-ray bursts (GRBs) developed by Reichart et al. (2000) to estimate the intrinsic luminosity, and th…
Determining the Gamma-Ray Burst Rate as a Function of Redshift
Nevin Weinberg, Carlo Graziani, Donald Q. Lamb
We exploit the 14 gamma-ray bursts (GRBs) with known redshifts and the 7 GRBs for which there are constraints on to determine the GRB rate , using a method…
Gamma-Ray Bursts as a Probe of Cosmology
Donald Q. Lamb
We show that, if the long GRBs are produced by the collapse of massive stars, GRBs and their afterglows may provide a powerful probe of cosmology and the early universe.
The Role of Dust in GRB Afterglows
Donald Q. Lamb
We show that the clumpy structure of star-forming regions can naturally explain the fact that 50-70% of GRB afterglows are optically ``dark.'' We also show that dust echos from the…
Localization of GRBs by Bayesian Analysis of Data from the HETE WXM
Carlo Graziani, Donald Q. Lamb, the HETE Science Team
We describe a new method of transient point source localization for coded-aperture X-ray detectors that we have applied to data from the HETE Wide-Field X-Ray Monitor (WXM). The me…
Astrometric Calibration and Estimate of the Systematic Error in WXM Localizations Obtained by the Chicago Bayesian Method
C. Graziani, Y. Shirasaki, T. Donaghy +11
WXM gives GRB localizations in instrument coordinates. WXM localizations must be converted to celestial coordinates using spacecraft aspect information obtained by the optical came…
The Broad-band Optical Properties of Galaxies with Redshifts 0.0 < z < 0.2
M. R. Blanton, D. W. Hogg, N. A. Bahcall +18
Using photometry and spectroscopy of 144,609 galaxies from the Sloan Digital Sky Survey, we present bivariate distributions of pairs of seven galaxy properties: four optical colors…
Faint High Latitude Carbon Stars Discovered by the Sloan Digital Sky Survey: Methods and Initial Results
Bruce Margon, Scott F. Anderson, Hugh C. Harris +5
We report the discovery of 39 Faint High Latitude Carbon Stars (FHLCs) from Sloan Digital Sky Survey commissioning data. The objects, each selected photometrically and verified spe…
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…
The luminosity density of red galaxies
David W. Hogg, Michael Blanton, Iskra Strateva
A complete sample of galaxies with five-band imaging and spectroscopic redshifts from the Sloan Digital Sky Survey is used to determine the fraction of the optical…
Unusual Broad Absorption Line Quasars from the Sloan Digital Sky Survey
Patrick B. Hall, S. F. Anderson, M. A. Strauss +6
The Sloan Digital Sky Survey has confirmed the existence of populations of broad absorption line (BAL) quasars with various unusual properties. We present and discuss twenty-three…
Exploratory Chandra Observations of the Three Highest Redshift Quasars Known
W. N. Brandt, D. P. Schneider, X. Fan +13
We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combine…
GRB010921: Localization and Observations by the HETE Satellite
G. Ricker, K. Hurley, D. Lamb +36
On September 21 at 18950.56 SOD (05:15:50.56) UT the FREGATE gamma-ray instrument on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst wa…