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The Formation of Stars
The Formation of Stars
Date: 22 April 2011, 13:51

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While there has long been theoretical speculation concerning the early life of stars, the subject first became an empirical one in the middle of the last century. Starting in the 1940s, the T Tauri class of objects, residing within dark clouds, was recognized and subsequently examined in considerable detail. This interest stemmed from the gradual realization that these peculiar variables represent a primitive phase of solar-type stars. It also became apparent that the observed objects must have condensed out of the dark clouds in which they are presently still found. By the mid 1950s, theorists began constructing numerical models for the pre-main-sequence evolutionary phase. The following decade saw advances in understanding the basic physics of cloud collapse. The pace of discovery accelerated rapidly in the 1970s, largely as a result of new instrumentation. The advent of infrared astronomy allowed observers to peer behind the thick veil of obscuring dust and view even younger objects. Millimeter dishes, X-ray telescopes, and sensitive array detectors in the optical and near-infrared all had major impacts. Meanwhile, theoretical research kept apace, with studies of everything from chemical reaction networks in cloud environments to the interiors of the youngest stars. By the 1980s, star formation became one of the most vigorous areas of astronomical research.

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