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44 papers · 1 filter
Detection of Pre-Shock Dense Circumstellar Material of SN 1978K
You-Hua Chu, Adeline Caulet, Marcos Montes +3
The supernova SN 1978K has been noted for its lack of emission lines broader than a few thousand km/s since its discovery in 1990. Modeling of the radio spectrum of the peculiar SN…
Magellanic Cloud X-ray Sources: III. Completion of a ROSAT Survey
P. C. Schmidtke, A. P. Cowley, J. D. Crane +4
This paper concludes a series of three papers presenting ROSAT High-Resolution Imager (HRI) observations of unidentified Einstein and serendipitous ROSAT X-ray sources in the direc…
Rotation periods of late-type stars in the young open cluster IC 2602
Sydney A. Barnes, Sabatino Sofia, Charles F. Prosser +1
We present the results of a monitoring campaign aimed at deriving rotation periods for a representative sample of stars in the young (30 Myr) open cluster IC 2602. Rotation periods…
Physical Structure of Small Wolf-Rayet Ring Nebulae
You-Hua Chu, Kerstin Weis, Donald R. Garnett
We have selected the seven most well-defined WR ring nebulae in the LMC (Br 2, Br 10, Br 13, Br 40a, Br 48, Br 52, and Br 100) to study their physical nature and evolutionary stage…
The Stellar Content of Obscured Galactic Giant H II Regions
R. D. Blum, A. Damineli, P. S. Conti
Near infrared images of the Galactic giant HII region W43 reveal a dense stellar cluster at its center. Broad band JHK photometry of the young cluster and K-band spectra of three o…
The Fornax Spectroscopic Survey: The Number of Unresolved Compact Galaxies
M. J. Drinkwater, S. Phillipps, M. D. Gregg +5
We describe a sample of thirteen bright (18.5<Bj<20.1) compact galaxies at low redshift (0.05<z<0.21) behind the Fornax Cluster. These galaxies are unresolved on UK Schmidt sky sur…