Kinematics of the circumstellar gas of HL Tauri and R Monocerotis

Details Kinematics of the circumstellar gas of HL Tauri and R Monocerotis Kinematics of the circumstellar gas of HL Tauri and R Monocerotis

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...323..294s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 323, Dec. 1, 1987, p. 294-305. Research supported by the Alfred P. Sloan Fo

Astronomy and Astrophysics

Astrophysics

175

Gas Dynamics, Millimeter Waves, Pre-Main Sequence Stars, Radio Spectra, Stellar Envelopes, Stellar Spectrophotometry, Astronomical Maps, Carbon Monoxide, Emission Spectra, Line Spectra, Molecular Spectra

Scientific paper

The authors present interferometric observations of 13CO emission from HL Tau and R Mon. The data permit quantitative determinations of the column density, mass, and dimensions of the circumstellar gas around each object. Simultaneous measurements of the 2.7 mm continuum emission allow an investigation of the circumstellar dust at high spatial resolution, furnishing a secondary probe of the circumstellar mass. Kinematic analysis of the weak, extended, molecular emission detected around both objects is consistent with the hypothesis that the gas orbits the stars in bound disks.

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