196 citations · 5k across the 159 of their papers we have counts for
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astro-ph1999★ 38 cited
An Ultradeep High Resolution X-ray Image of M101: The X-ray Source Population in a Late-type Spiral
Q. Daniel Wang, Stefan Immler, Wolfgang Pietsch
We have studied the X-ray source population of the face-on spiral galaxy M101 (NGC 5457). Within a field of radius 17' (36 kpc at the distance of 7.2 Mpc), covered by an ultradeep…
astro-ph1999★ 51 cited
Detection of X-ray-Emitting Hypernova Remnants in M101
Q. Daniel Wang
Based on an ultra deep (230 ks) ROSAT HRI imaging of M101, we have detected 5 X-ray sources that coincide spatially with optical emission line features previously classified as sup…
astro-ph1999★ 11 cited
A2111: A z=0.23 Butcher-Oemler Cluster with a Non-isothermal Atmosphere and Normal Metallicity
Mark Henriksen, Q. Daniel Wang, Melville Ulmer
We report results from an X-ray study of the Abell 2111 galaxy cluster using the Advanced Satellite for Astrophysics and Cosmology ASCA and the ROSAT Position Sensitive Proportiona…