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Evaluating Magnetic Fields and Mass-to-Magnetic Flux Ratios in Lupus Dark Clouds

This study explores the magnetic fields within the Lupus Dark Clouds, building on the findings by Pereyra and Magalhães. Using data from IRAS, we analyze the polarization angle dispersion and turbulent velocities to estimate the magnetic field strength, calculated at B = 18 ± 13 μG. Our evaluation of the mass-to-magnetic flux ratio highlights the critical value (M/Φ) and its implications for star formation dynamics. Results indicate that the magnetic support is effective in preventing collapse under subcritical conditions, thereby influencing star formation.

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Evaluating Magnetic Fields and Mass-to-Magnetic Flux Ratios in Lupus Dark Clouds

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  1. Segunda parte

  2. IRAS Vela Shell

  3. Feitzinger & Stüwe 1984  Pup  Vel 14°x14° IRAS 100µ (30°x30°) Fig. 1

  4. Pereyra & Magalhães 04

  5. Pereyra & Magalhães 06

  6. Pereyra & Magalhães 06

  7. EstimatingMagneticFields Chandrasekhar & Fermi 51 ρ : density ν : turbulent velocity Δθ: polarization angle dispersion

  8. B = 18 ± 13 μG Pereyra & Magalhães 06

  9. EvaluatingMass-to-Magnetic flux ratio Crutcher 2004 (M / Φ) crit : critical value for the mass can be supported by a magnetic flux N (H2) : H2 column density λ < 1 subcritical regime, magnetic support prevents collapse and star formation

  10. Results support subcritical regime Pereyra & Magalhães 06

  11. Lupus Dark Cloud Alves & Franco 06

  12. Sigue tercera parte

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