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Luminous red mergers in the z = 0.83 cluster MS 1054–03: Direct evidence for hierarchical formation of massive early-type galaxies Abstract. 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(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)
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 measure the frequency of bulk gas-stellar counterrotation in a sample of 67 galaxies drawn from the Nearby Field Galaxy Survey, a broadly representative survey of the local galaxy population down to We detect four counterrotators among 17 E/S0Ïs with extended gas emission In M B D [15. (24 ~6`8 %). contrast, we Ðnd no clear examples of bulk(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)
5 We have previously demonstrated that Tully-Fisher (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)
The 15R-North galaxy redshift survey is a uniform spectroscopic survey (S/N ∼10) covering the range 3650—7400Å for 3149 galaxies with median redshift 0.05. The sample is 90% complete to R = 15.4. The median slit covering fraction is 24% of the galaxy, apparently sufficient to minimize the effects of aperture bias on the EW(Hα). Forty-nine percent of the(More)
1 Observations reported here were obtained at the F. L. Whipple Observatory and at the Multiple Mirror Telescope, a joint facility of the Smithsonian Institution and the University of Arizona. ABSTRACT We have measured 125 redshifts in 31 groups of galaxies observed with Ein-stein, and have compiled an additional 543 redshifts from the literature. There is(More)