Spectroscopic Studies of Emission Nebulosities in the Magellanic Clouds

Chemical composition of nebulosities in the magellanic clouds.

From photoelectric spectrophotometric data secured at Cerro Tololo Interamerican Observatory we have attempted to derive electron densities and temperatures, ionic concentrations, and chemical abundances of He, C, N, O, Ne, S, and Ar in nebulosities in the Magellanic Clouds. Although 10 distinct nebulosities were observed in the Small Cloud and 20 such objects in the Large Cloud, the most detai...

Differential Studies of Cepheids in the Magellanic Clouds

EROS (Aubourg et al., 1993) is a French collaboration to search for baryonic dark matter in the Galactic Halo by microlensing on stars of the Magellanic Clouds. Between 1991 and 1994 about 15000 CCD images were taken with two broad bandpass filters BE and RE of an area of 1 x 0.4 degrees centered on the bar of the LMC. Another field of 1 x 0.4 degrees had been chosen in the SMC between 1993-199...

Submillimeter to centimeter excess emission from the Magellanic Clouds

Context. Dust emission at sub-millimeter to centimeter wavelengths is often simply the Rayleigh-Jeans tail of dust particles at thermal equilibrium and is used as a cold mass tracer in various environments, including nearby galaxies. However, well-sampled spectral energy distributions of the nearby, star-forming Magellanic Clouds have a pronounced (sub-)millimeter excess. Aims. This study attem...

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Superbubbles in the Magellanic Clouds

Superbubbles that result from the stellar winds and supernovae of OB associations probably play a fundamental role in the structure and energetics of the ISM in star-forming galaxies. Their influence may also dominate the relationship between the different interstellar gas phases. How do superbubbles form and evolve? How do they affect the local and global ISM? The Magellanic Clouds provide a s...