47 citations · 92 across the 2 of their papers we have counts for
2 papers
astro-ph2001★ 45 cited
The Consequences of the Cosmic Star-Formation Rate: X-ray Number Counts
A. Ptak, R. Griffiths, N. White +1
We discuss the observable consequences for the detection of galaxies in the X-ray bandpass resulting from a peak in the cosmic star-formation rate at a redshift > 1. Following Whit…
astro-ph1999★ 47 cited
ASCA Observations of "Type 2" LINERs: Evidence for a Stellar Source of Ionization
Y. Terashima, L. C. Ho, A. F. Ptak +4
We present ASCA observations of LINERs without broad H emission in their optical spectra. The sample of "type 2" LINERs consists of NGC 404, 4111, 4192, 4457, and 4569. We have…