109 citations · 425 across the 11 of their papers we have counts for
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X-ray Observations of the Bipolar PNe NGC 2346 and NGC 7026
Robert A. Gruendl, Martin A. Guerrero, You-Hua Chu +1
We have obtained X-ray observations of the bipolar planetary nebulae (PNe) NGC 2346 and NGC 7026 with XMM-Newton. These observations detected diffuse X-ray emission from NGC 7026 b…
An Optical Study of Stellar and Interstellar Environments of Seven Luminous and Ultraluminous X-Ray Sources
Caitlin J. Ramsey, Rosa M. Williams, Robert A. Gruendl +3
We have studied the stellar and interstellar environments of two luminous X-ray sources and five ultraluminous X-ray sources (ULXs) in order to gain insight into their nature. Arch…
The Nebular Environment and Enigmatic Hard X-ray Emission of the Hot DO White Dwarf KPD 0005+5106
You-Hua Chu, Robert A. Gruendl, Rosa M. Williams +2
We have detected an ionized nebula around the hot DO white dwarf KPD 0005+5106, and used the [OIII]/H-alpha ratios and nebular velocities to separate this nebula from the backgroun…
XMM-Newton Spectra of Intermediate-Mass Black Hole Candidates: Application of a Monte-Carlo Simulated Model
Q. Daniel Wang, Yangsen Yao, Wakako Fukui +2
We present a systematic spectral analysis of six ultraluminous X-ray sources (NGC1313 X-1/X-2, IC342 X-1, HoIX X-1, NGC5408 X-1 and NGC3628 X-1) observed with XMM-Newton Observator…
Supernova Remnant Crossing a Density Jump: A Thin Shell Model
Yang Chen, Fan Zhang, Rosa M. Williams +1
The environments of supernova explosion are often inhomogeneous and there may be jumps in their density structure. We have developed a semi-analytic model under the thin-shell appr…
X-Ray Emission from Multi-Phase Shock in the Large Magellanic Cloud Supernova Remnant N49
Sangwook Park, David N. Burrows, Gordon P. Garmire +3
The supernova remnant (SNR) N49 in the Large Magellanic Cloud has been observed with the Advanced CCD Imaging Spectrometer (ACIS) on board the {\it Chandra X-Ray Observatory}. The…
The constant-velocity highly collimated outflows of the planetary nebula He 2-90
Martin A. Guerrero, Luis F. Miranda, You-Hua Chu +2
We present high-dispersion echelle spectroscopic observations and a narrow-band [N II] image of the remarkable jet-like features of He 2-90. They are detected in the echelle spectr…
The Enigmatic X-ray Point Sources at the Central Stars of NGC 6543 and NGC 7293
Martin A. Guerrero, You-Hua Chu, Robert A. Gruendl +2
Recent Chandra ACIS-S observations have detected a point source at the central star of NGC 6543 and confirmed the point source nature of the hard X-ray emission from NGC 7293. The…
Chandra Reveals the X-ray Glint in the Cat's Eye
Y. -H. Chu, M. A. Guerrero, R. A. Gruendl +2
We have obtained Chandra ACIS-S observations of NGC 6543, the Cat's Eye Nebula. The X-ray emission from NGC 6543 is clearly resolved into a point source at the central star and dif…
Resolving SNR 0540-6944 from LMC X-1 with Chandra
Rosa Murphy Williams, Robert Petre, You-Hua Chu +1
We examine the supernova remnant (SNR) 0540-697 in the Large Magellanic Cloud (LMC) using data from the Chandra ACIS. The X-ray emission from this SNR had previously been hidden in…