Gas infall and possible circumstellar rotation in R Leonis
Artikel i vetenskaplig tidskrift, 2019

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 similar or equal 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.

stars: mass-loss

techniques: high angular resolution

stars: individual: R Leo

techniques: interferometric

stars: AGB and post-AGB

circumstellar matter

Författare

J. P. Fonfria

CSIC

M. Santander-Garcia

IGN

J. Cernicharo

CSIC

Luis Velilla Prieto

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Galaktisk astrofysik

M. Agundez

CSIC

N. Marcelino

CSIC

G. Quintana-Lacaci

CSIC

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 622 L14

Ämneskategorier

Astronomi, astrofysik och kosmologi

DOI

10.1051/0004-6361/201834840

Mer information

Senast uppdaterat

2019-03-13