76 citations · 152 across the 6 of their papers we have counts for
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Dwarf Galaxies in the Coma Cluster. II. Photometry and Analysis
Jeff Secker, William E. Harris, Julia D. Plummer
We study the dwarf galaxy population in the central ~700 arcmin^2 of the Coma cluster, the majority of which are early-type dwarf elliptical (dE) galaxies. Analysis of the statisti…
Dwarf Galaxies in the Coma Cluster. I. Detection, Measurement and Classification Techniques
Jeff Secker, William E. Harris
Deep B- and R-band CCD images of the central ~700 arcmin^2 of the Coma cluster core have been used to measure the dwarf-galaxy population in Coma. In this paper, we describe a newl…
Photometry and Spectroscopy of Coma Dwarf Ellipticals
Jeff Secker, William E. Harris, Pat Cote +1
We have used deep R- and B-band CCD images (with ~1.2 arcsec seeing) of the central ~700 arcmin^2 of the Coma cluster core (and an associated ~270 arcmin^2 control field) to study…
Astrophysical and Biological Constraints on Radiopanspermia
Jeff Secker, Paul S. Wesson, James R. Lepock
We have carried out a series of calculations involving bacteria and viruses embedded in dust grains, which are ejected from our solar system by radiation pressure, and travel throu…
A Constraint on the Formation of Dwarf Elliptical Galaxies in the Dense Coma Cluster Core
Jeff Secker
Deep CCD photometry and positions for a new sample of dwarf elliptical (dE) galaxies in the Coma cluster core are analyzed. A significant color gradient is detected in…
The Early-type Dwarf-to-Giant Ratio and Substructure in the Coma Cluster
Jeff Secker, William E. Harris
We have obtained new CCD photometry for a sample of early-type galaxies (dwarf and giant ellipticals) in the central 700 arcmin of the Coma cluster, complete in co…