85 citations · 411 across the 25 of their papers we have counts for
Showing 2004Show all
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astro-ph2004★ 85 cited
Group, field and isolated early-type galaxies II. Global trends from nuclear data
Glenda Denicolo, Roberto Terlevich, Elena Terlevich +2
We have derived ages, metallicities and enhanced-element ratios [alpha/Fe] for a sample of 83 early-type galaxies essentially in groups, the field or isolated objects. The stellar…
astro-ph2004
Type II quasar candidates in the Sloan Digital Sky Survey: evidence for X-ray obscuration
C. Vignali, D. M. Alexander, A. Comastri
Recent X-ray surveys with Chandra and XMM-Newton have found several genuine Type II quasars, the long sought-after population of high-luminosity (high-redshift) Seyfert 2 galaxies,…