The dust disk and companion of the nearby AGB star L2 Puppis - SPHERE/ZIMPOL polarimetric imaging at visible wavelengths

  title={The dust disk and companion of the nearby AGB star L2 Puppis - SPHERE/ZIMPOL polarimetric imaging at visible wavelengths},
  author={P. Kervella and M. Montarg{\`e}s and E. Lagadec and S. Ridgway and X. Haubois and J. Girard and K. Ohnaka and G. Perrin and A. Gallenne},
  journal={Astronomy and Astrophysics},
The bright southern star L2 Pup is a particularly prominent asymptotic giant branch (AGB) star, located at a distance of only 64 pc. We report new adaptive optics observations of L2 Pup at visible wavelengths with the SPHERE/ZIMPOL instrument of the VLT that confirm the presence of the circumstellar dust disk discovered recently. This disk is seen almost almost edge-on at an inclination of 82 . The signature of its three-dimensional structure is clearly observed in the map of the degree of… Expand
ALMA observations of the nearby AGB star L2 Puppis - I. Mass of the central star and detection of a candidate planet
Six billion years from now, while evolving on the asymptotic giant branch (AGB), the Sun will metamorphose from a red giant into a beautiful planetary nebula. This spectacular evolution will impactExpand
ALMA observations of the nearby AGB star L2 Puppis - II. Gas disk properties derived from 12CO and 13CO J = 3–2 emission
The circumstellar environment of the AGB star L2 Puppis was observed with ALMA in cycle 3, with a resolution of 15 × 18 mas. The molecular emission shows a differentially rotating disk, inclined to aExpand
Infrared interferometric imaging of the compact dust disk around the AGB star HR3126 with the bipolar Toby Jug Nebula
The asymptotic giant branch (AGB) star HR3126, associated with the arcminute-scale bipolar Toby Jug Nebula, provides a rare opportunity to study the emergence of bipolar structures at the end of theExpand
The nearby AGB star L2 Puppis: the birth of a planetary nebula ?
Adaptive optics observations in the infrared (VLT/NACO, Kervella et al. 2014) and visible (VLT/SPHERE, Kervella et al. 2015) domains revealed that the nearby AGB star L2 Pup (d=64 pc) is surroundedExpand
The protoplanetary system HD 100546 in H α polarized light from SPHERE/ZIMPOL: A bar-like structure across the disk gap?
Context. HD 100546 is one of the few known pre-main-sequence stars that may host a planetary system in its disk. Aims. This work aims to contribute to our understanding of HD 100546 by analyzing newExpand
The inner circumstellar dust of the red supergiant Antares as seen with VLT/SPHERE/ZIMPOL
The processes by which red supergiants lose mass are not fully understood thus-far and their mass-loss rates lack theoretical constraints. The ambient surroundings of the nearby M0.5 Iab star AntaresExpand
Resolved imaging of the AR Puppis circumbinary disk
Circumbinary disks are common around post-asymptotic giant branch (post-AGB) stars with a stellar companion on orbital time scales of a few 100 to few 1000 days. The presence of a disk is usuallyExpand
ALMA detection of a tentative nearly edge-on rotating disk around the nearby AGB star R~Doradus
A spectral scan of the circumstellar environment of the asymptotic giant branch (AGB) star R~Doradus was taken with ALMA in cycle 2 at frequencies between 335 and 362 GHz and with a spatialExpand
Ultraviolet emission from main-sequence companions of AGB stars
Although the majority of known binary Asymptotic Giant Branch (AGB) stars are symbiotic systems (i.e. with a WD as a secondary star), main-sequence companions of AGB stars can be more numerous, evenExpand
Interferometric observations of SiO thermal emission in the inner wind of M-type AGB stars IK Tauri and IRC+10011.
There is a strong coupling between the depletion of gas-phase SiO and gas acceleration in the inner envelope of M-type AGB stars, which could be explained by the condensation of SiO into dust grains. Expand


An edge-on translucent dust disk around the nearest AGB star, L2 Puppis - VLT/NACO spectro-imaging from 1.04 to 4.05 μm and VLTI interferometry
As the nearest known AGB star (d=64pc) and one of the brightest (mK~-2), L2 Pup is a particularly interesting benchmark object to monitor the final stages of stellar evolution. We report new luckyExpand
Dissecting the AGB star L-2 Puppis: a torus in the making
Aims. The circumstellar environment of L-2 Pup, an oxygen-rich semiregular variable, was observed to understand the evolution of mass loss and the shaping of ejecta in the late stages of stellarExpand
The long-period Galactic Cepheid RS Puppis - III. A geometric distance from HST polarimetric imaging of its light echoes
As one of the most luminous Cepheids in the Milky Way, the 41.5-day RS Puppis is an analog of the long-period Cepheids used to measure extragalactic distances. An accurate distance to this star wouldExpand
Probing the inner wind of AGB stars: Interferometric observations of SiO millimetre line emission from the oxygen-rich stars R Dor and L 2 Pup
High angular resolution Australia Telescope Compact Array (ATCA) observations of SiO "thermal" millimetre line emission towards the two oxygen-rich, low mass loss rate AGB stars R Dor and L 2 Pup areExpand
Recent observations of strikingly well-defined spirals in the circumstellar envelopes of asymptotic giant branch (AGB) stars point to the existence of binary companions in these objects. In the caseExpand
ALMA data suggest the presence of spiral structure in the inner wind of CW Leonis
Context. Evolved low-mass stars lose a significant fraction of their mass through a stellar wind. While the overall morphology of the stellar wind structure during the Asymptotic Giant Branch (AGB)Expand
ALMA Data Suggest the Presence of Spiral Structure in the Inner Wind of CW Leo
Evolved low-mass stars lose a significant fraction of their mass through stellar winds. While the overall morphology of the stellar wind structure during the asymptotic giant branch (AGB) phase isExpand
Following the outburst of the unusual variable star V838 Monocerotis in 2002, a spectacular light echo appeared. A light echo provides the possibility of direct geometric distance determination,Expand
The light curve of the semiregular variable L2 Puppis – I. A recent dimming event from dust
The nearby Mira-like variable L2 Pup is shown to be undergoing an unprecedented dimming episode. The stability of the period rules out intrinsi c changes to the star, leaving dust formation along theExpand
Molecular shells in IRC+10216: tracing the mass loss history,.
Maps of the extended 12CO and 13CO emissions in IRC+10216, the envelope of CW Leo, the high mass loss star the closest to the Sun, show that the mass loss process is highly variable on timescales of hundreds of years. Expand