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An Intriguing X-ray Arc Surrounding the X-ray Source RX J053335-6854.9 toward the Large Magellanic Cloud
J. D. Lowry, Y. -H. Chu, M. A. Guerrero +3
ROSAT observations of the Large Magellanic Cloud (LMC) have revealed a large diffuse X-ray arc around the point source RX J053335-6854.9. The relative locations of the diffuse and…
Hard X-ray Emission Associated with White Dwarfs II
Y. -H. Chu, M. A. Guerrero, R. A. Gruendl +1
We have previously conducted a search for X-ray sources coincident with white dwarfs using the white dwarf catalog compiled by McCook & Sion (1999} and the ROSAT sources in the WGA…
X-ray Observations of Planetary Nebulae
M. A. Guerrero, Y. -H. Chu, R. A. Gruendl
Planetary nebulae (PNe) are an exciting addition to the zoo of X-ray sources. Recent Chandra and XMM-Newton observations have detected diffuse X-ray emission from shocked fast wind…
Hot Gas in the Circumstellar Bubble S308
Y. -H. Chu, M. A. Guerrero, R. A. Gruendl +2
S308 is a circumstellar bubble blown by the WN4 star HD50896. It is one of the only two single-star bubbles that show detectable diffuse X-ray emission. We have obtained XMM-Newton…
WR bubbles and HeII emission
Y. Naze, G. Rauw, J. Manfroid +2
We present the very first high quality images of the HeII 4686 emission in three high excitation nebulae of the Magellanic Clouds. A fourth high excitation nebula, situated around…
Ten Million Degree Gas in M 17 and the Rosette Nebula: X-ray Flows in Galactic H II Regions
L. K. Townsley, E. D. Feigelson, T. Montmerle +3
We present the first high-spatial-resolution X-ray images of two high-mass star forming regions, the Omega Nebula (M 17) and the Rosette Nebula (NGC 2237--2246), obtained with the…
Physical Structure of Planetary Nebulae. I. The Owl Nebula
M. A. Guerrero, Y. -H. Chu, A. Manchado +1
The Owl Nebula is a triple-shell planetary nebula with the outermost shell being a faint bow-shaped halo. We have obtained deep narrow-band images and high-dispersion echelle spect…
Diffuse X-Ray Emission from the Quiescent Superbubble M17, the Omega Nebula
B. C. Dunne, Y. -H. Chu, C. -H. R. Chen +5
The emission nebula M17 contains a young ~1 Myr-old open cluster; the winds from the OB stars of this cluster have blown a superbubble around the cluster. ROSAT observations of M17…
Hard X-ray Emission Associated with White Dwarfs
I. J. Odwyer, Y. -H. Chu, R. A. Gruendl +2
We have used the WGACAT to search for hard X-ray sources associated with white dwarfs (WDs) from the catalog of McCook & Sion (1999). We find 17 X-ray sources coincident with WDs s…