The National Astronomical Observatory researchers published the largest continuous area of dynamic s

时间:2015-11-05    浏览:779    Express ma

Molecular outflows and molecular dynamics of star formation is a typical bubble phenomenon observed in the process. Through the analysis of star formation can influence the molecular cloud feedback on these two kinds of dynamic structure, and further understanding of the evolution of molecular clouds.

National Astronomical Observatory of the fast group of doctoral students Hui Xian Li under the guidance of his mentor Li Di researcher, spectral line survey data using the FCRAO telescope carbon monoxide, in the Taurus molecular cloud of about 100 square degrees on the sky to find the 55 outward flow and 37 bubble, of which 31 outward flow is newly discovered, all air bubbles were found for the first time. The research was supported by the dynamic structure of the sample by far the largest continuous area.

The quantitative analysis of the star formation in the process of structural dynamics of parent cloud feedback effect, draws the following conclusion: outward flow and bubble does not have enough energy resistance of the Taurus molecular cloud gravitational collapse; outward flow and bubble energy is far less than that of the Taurus molecular cloud turbulent kinetic energy, but energy injection rate can be maintained for the turbulent dissipation. This study significantly improve our understanding of the Taurus molecular cloud, and provide a feasible way for other molecular cloud related research.

The results have been published in the International Astronomical Journal ApJ Supplement Series (ApJS, 2015, 219, 20). The reviewers spoke highly of the work and pointed out that "the formation of research on stars of great significance, will become the field of theoretical and observational aspects of an important reference." ("Scientifically, the paper is extremely useful and should be a key reference work in all future theoretical and observational studies of star formation.")

The main cooperation include the National Astronomical Observatory Research Associate, Qian Lei Xu Duo of NASA's Jet Propulsion Laboratory professor Paul Goldsmith.

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Sketch map of the Taurus molecular outflows and molecular bubbles. The background is 12CO and 13CO integral intensity figure FCRAO telescope. Blue and red jet said outward flow, transparent ball represents the bubble.


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