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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…
Five Years of Magellanic Clouds Research: A Newsletter Editors' Perspective
Eva K. Grebel, You-Hua Chu, John S. Gallagher +1
We analyze the topical and demographic evolution of Magellanic Clouds research over the past five years based on submissions of abstracts of refereed papers to the electronic Magel…
X-rays and Protostars in the Trifid Nebula
Jeonghee Rho, Michael F. Corcoran, You-Hua Chu +1
The Trifid Nebula is a young HII region recently rediscovered as a "pre-Orion" star forming region, containing protostars undergoing violent mass ejections visible in optical jets…
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…
Detection of an X-ray Pulsar Wind Nebula and Tail in SNR N157B
Q. D. Wang, E. V. Gotthelf, Y. -H. Chu +1
We report Chandra X-ray observations of the supernova remnant N157B in the Large Magellanic Cloud, which are presented together with an archival HST optical image and a radio conti…
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…