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The Quadruple Gravitational Lens PG1115+080: Time Delays and Models
P. L. Schechter, C. D. Bailyn, R. Barr +24
Optical photometry is presented for the quadruple gravitational lens PG1115+080. A preliminary reduction of data taken from November 1995 to June 1996 gives component ``C'' leading…
Low Surface Brightness Galaxies in the Core of the Coma Cluster
M. P. Ulmer, G. M. Bernstein, D. R. Martin +3
We present the results of a search for low surface brightness galaxies (hereafter LSBs) in the Coma cluster. Bernstein et al. report on deep CCD observations in R of a 7.5 by 7.5 a…
The Mass distribution of the Cluster 0957+561 from Gravitational Lensing
Philippe Fischer, Gary Bernstein, George Rhee +1
Multiply gravitationally lensed objects with known time delays can lead to direct determinations of H independent of the distance ladder if the mass distribution of the lens is…