An investigation of faint stars in a region of the Magellanic Stream

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Hydrogen Clouds, Magellanic Clouds, Stellar Luminosity, Milky Way Galaxy, Schmidt Cameras, Star Distribution, Stellar Evolution

Scientific paper

Star counts to 20.5 m in B have been performed on UKST plates using the COSMOS automatic measuring machine of an extended area in the Magellanic Stream (MSI). While no surplus of stars has been found in the region of maximum H I density, one patch nearby with a small enhancement of presumed stellar images has been identified. The upper limit of star density is about 1000 per square degree. Excess stars to 20.5 m were expected to consist of intermediate age objects. Their evident scarcity in the Magellanic Stream could be explained if the supposed encounter of the Magellanic Clouds with the Galaxy occurred before or at the time of the birth of the intermediate age stars (about 3 billion yr ago). It is also suggested that the Stream at MSI may be significantly more distant than the Clouds themselves.

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