Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...395..501g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 395, no. 2, Aug. 20, 1992, p. 501-515. Research supported by NSERC, Ministe
Astronomy and Astrophysics
Astrophysics
26
Interstellar Matter, Molecular Clouds, Nebulae, Pre-Main Sequence Stars, Star Formation, Gas Dynamics, Gravitational Collapse, H Alpha Line, Magnetohydrodynamic Waves, T Tauri Stars
Scientific paper
Data sets that include stellar proper motions, gas velocities such as H I and CO, and optical polarization are used to derive a global view of gas dynamics and star formation in the Taurus cloud. The bulk motion of the cloud, inferred to be 17 km/s, is generated by the infall of material onto the Gould Belt plane as a consequence of Parker-Jeans instability in the Local ISM. The bulk motion in the cloud in Gould's Belt is super-Alfvenic with respect to the surrounding quiescent ISM and shocks are expected which may be detected in the H I self-absorption. The Taurus cloud is found to be a set of cometary-shaped filaments moving with an inclination of 66 deg with respect to the line of sight. T Tauari stars appear to move roughly parallel to the filaments in the same direction as the Gould's Belt members. The total cloud field is inferred to be about 12 micro-G and is large in the plane of the sky. The MHD shock direction is nearly perpendicular to the direction of the mean magnetic field in the cloud.
Gomez de Castro Ana
Pudritz Ralph E.
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