SIMBAD references

2019A&A...622L..14F - Astronomy and Astrophysics, volume 622, L14-14 (2019/2-1)

Gas infall and possible circumstellar rotation in R Leonis.

FONFRIA J.P., SANTANDER-GARCIA M., CERNICHARO J., VELILLA-PRIETO L., AGUNDEZ M., MARCELINO N. and QUINTANA-LACACI G.

Abstract (from CDS):

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''. These observations permitted us to resolve the innermost envelope of this star, which revealed 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 immediately in front of the star, which are typical footprints of material infall. This emission also shows lateral gas motions compatible with a torus-like structure.

Abstract Copyright: © ESO 2019

Journal keyword(s): stars: AGB and post-AGB - stars: individual: R Leo - circumstellar matter - stars: mass-loss - techniques: interferometric - techniques: high angular resolution

Simbad objects: 10

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