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arXiv · 1902.02574

Gas infall and possible circumstellar rotation in R Leo

J. P. Fonfría·M. Santander-García·J. Cernicharo·L. Velilla-Prieto·M. Agúndez·N. Marcelino·G. Quintana-Lacaci
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Abstract

We present new interferometer molecular observations of R Leo taken at 1.2 mm with the Atacama Large Millimeter Array with an angular resolution up to ~0.026 arcsec. These observations permit us to resolve the innermost envelope of this star revealing the existence of a complex structure that involves extended continuum emission and molecular emission showing a non-radial gas velocity distribution. This molecular emission displays prominent red-shifted absorptions located right in front to the star typical of material infall and lateral gas motions compatible with the presence of a torus-like structure.

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J. P. Fonfría, M. Santander-García, J. Cernicharo, L. Velilla-Prieto, M. Agúndez, N. Marcelino, G. Quintana-Lacaci. 2019-02-07. Gas infall and possible circumstellar rotation in R Leo. https://doi.org/10.1051/0004-6361%2F201834840

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