CEP A - A possible proto-cluster

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cepheus Constellation, Molecular Clouds, Protostars, Radio Sources (Astronomy), Star Clusters, Stellar Evolution, Carbon Compounds, Carbon Monoxide, Gravitational Collapse, Hydrogen Clouds, Line Spectra, Sulfides

Scientific paper

The authors present high resolution CS and CO maps of Cep A region made with the 45 m telescope at Nobeyama. The CS map shows that a dense cloud surrounding the proto-star cluster extends in the North-South direction and is probably rotating. The bipolar molecular flow apparent in the CO maps is well-collimated along East-West direction within 0.2 pc from the proto-stars. The dense cloud is gravitationally unstable and appears to be in a contracting phase to form a cluster of massive stars.

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