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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…
Spectroscopic Classification of 42 LMC OB Stars: Selection of Probes for the Hot Gaseous Halo of the LMC
Elizabeth G. Jaxon, Martin A. Guerrero, J. Chris Howk +3
Interstellar C IV absorption line studies of the hot gaseous halo of the Large Magellanic Cloud (LMC) have been hindered by non-ideal selections of early-type probe stars in region…
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…