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Dependence of Nebular Heavy-Element Abundance on H I Content for Spiral Galaxies
Paul Robertson, Gregory A. Shields, Romeel Davé +2
We analyze the galactic H I content and nebular log(O/H) for 60 spiral galaxies in the Moustakas et al. (2006) spectral catalog. After correcting for the mass-metallicity relations…
Enhanced Abundances in Spiral Galaxies of the Pegasus I Cluster
Paul Robertson, Gregory A. Shields, Guillermo A. Blanc
We study the influence of cluster environment on the chemical evolution of spiral galaxies in the Pegasus I cluster. We determine the gas-phase heavy element abundances of six gala…
Star Formation in Partially Gas-Depleted Spiral Galaxies
James A. Rose, Paul Robertson, Jesse Miner +1
Broadband B and R and H-alpha images have been obtained with the 4.1-m SOAR telescope atop Cerro Pachon, Chile for 29 spiral galaxies in the Pegasus I galaxy cluster and for 18 spi…