D. G. Fabricant

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We have previously demonstrated that TullyFisher (TF) residuals correlate with tracers of star formation history (color and emission line equivalent width, EW) for a broad sample of Sa–Sd spiral galaxies (Kannappan, Fabricant, & Franx 2002, KFF). Here we use these correlations to study two other classes of galaxies: (1) galaxies in close pairs, and (2)(More)
We present UBVRI photometry of 44 type-Ia supernovae (SN Ia) observed from 1997 to 2001 as part of a continuing monitoring campaign at the Fred Lawrence Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics. The data set comprises 2190 observations and is the largest homogeneously observed and reduced sample of SN Ia to date, nearly(More)
We present results from a morphological study of the distant X-ray cluster MS 1054–03 at z = 0.83. We have obtained a large, two color HST WFPC2 mosaic of this cluster, and measured redshifts of 186 galaxies in the MS 1054–03 field with the 10m Keck telescope. Of 81 spectroscopically confirmed cluster galaxies observerd with HST, 13 are merger systems. Most(More)
These decades are the first in which we can begin to map the universe. Recent surveys reveal patterns in the distribution of galaxies --- patterns coherent on scales of 150 million light years or more. These patterns contrast with the smoothness of the radiation background measured by the COBE satellite. Together these observations challenge our(More)
We present new results on the Fundamental Plane of galaxies in two rich clusters, Cl1358+62 at z = 0.33 and MS2053–04 at z = 0.58, based on Keck and HST observations. Our new data triple the sample of galaxies with measured Fundamental Plane parameters at intermediate redshift. The early-type galaxies in these clusters define very clear Fundamental Plane(More)
The slow evolution of the M/L ratios, colors, and line strengths of cluster early-type galaxies to z ∼ 1 suggests that their stars were formed at very high redshift. At the same time, morphological studies of distant clusters indicate significant evolution in the early-type galaxy population. Striking evidence for strong morphological evolution in clusters(More)
We use a representative sample of 65 galaxy clusters observed with the Einstein IPC to constrain the range of cluster X{ray morphologies. We develop and apply quantitative and reproducible measures to constrain the intrinsic distributions of (i) emission weighted centroid variation w ~x , (ii) emission weighted axial ratio , (iii) emission weighted(More)
The Ohara glass S-FTM16 is of considerable interest for near-infrared optical designs because it transmits well through the K band and because negative S-FTM16 elements can be used to accurately achromatize positive calcium fluoride elements in refractive collimators and cameras. Glass manufacturers have sophisticated equipment to measure the refractive(More)