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Author Juárez, Carmen ♦ Girart, Josep M. ♦ Zamora-Avilés, Manuel ♦ Palau, Aina ♦ Ballesteros-Paredes, Javier ♦ Tang, Ya-Wen ♦ Koch, Patrick M. ♦ Liu, Hauyu Baobab ♦ Zhang, Qizhou ♦ Qiu, Keping
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ♦ COMPARATIVE EVALUATIONS ♦ COSMIC DUST ♦ DISTRIBUTION ♦ EMISSION ♦ GRAVITATION ♦ MAGNETIC FIELDS ♦ MAGNETOHYDRODYNAMICS ♦ MASS ♦ MOLECULES ♦ POLARIZATION ♦ SIMULATION ♦ STAR EVOLUTION ♦ STARS ♦ VELOCITY
Abstract We present Submillimeter Array (SMA) observations at 345 GHz toward the intermediate/high-mass cluster-forming region NGC 6334 V. From the dust emission we spatially resolve three dense condensations, the brightest one presenting the typical chemistry of a hot core. The magnetic field (derived from the dust polarized emission) shows a bimodal converging pattern toward the hot core. The molecular emission traces two filamentary structures at two different velocities, separated by 2 km s{sup −1}, converging to the hot core and following the magnetic field distribution. We compare the velocity field and the magnetic field derived from the SMA observations with magnetohydrodynamic simulations of star-forming regions dominated by gravity. This comparison allows us to show how the gas falls in from the larger-scale extended dense core (∼0.1 pc) of NGC 6334 V toward the higher-density hot core region (∼0.02 pc) through two distinctive converging flows dragging the magnetic field, whose strength seems to have been overcome by gravity.
ISSN 0004637X
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-07-20
Publisher Place United States
Journal Astrophysical Journal
Volume Number 844
Issue Number 1


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