ALMA observations of the nearby AGB star L2 Puppis - I. Mass of the central star and detection of a candidate planet

  title={ALMA observations of the nearby AGB star L2 Puppis - I. Mass of the central star and detection of a candidate planet},
  author={P. Kervella and W. Homan and A. Richards and L. Decin and I. McDonald and M. Montarg{\`e}s and K. Ohnaka},
  journal={Astronomy and Astrophysics},
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 impact the solar system planets, but observational confirmations of the predictions of evolution models are still elusive as no planet orbiting an AGB star has yet been discovered. The nearby AGB red giant L 2  Puppis ( d = 64 pc) is surrounded by an almost edge-on circumstellar dust disk. We report new… Expand
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
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
Constraining planet formation around 6–8 M⊙ stars
Identifying planets around O-type and B-type stars is inherently difficult; the most massive known planet host has a mass of only about $3M_{\odot}$. However, planetary systems which survive theExpand
A rotating fast bipolar wind and disk system around the B[e]-type star MWC 922.
The physical conditions and kinematics in the inner layers of MWC 922 are described with unparalleled detail, which has revealed itself as an ideal laboratory for studying the interplay of disk rotation and jet-launching. Expand
AGBs, Post-AGBs and the Shaping of Planetary Nebulae
During the last decades, observations, mostly with the Hubble Space Telescope, have revealed that round Planetary Nebulae were the exception rather than rule. A huge variety of features are observed,Expand
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
Pulsation-triggered dust production by asymptotic giant branch stars
Eleven nearby (<300 pc), short-period (50-130 d) asymptotic giant branch (AGB) stars were observed in the CO J = 2-1 line. Detections were made towards objects that have evidence for dust productionExpand
DEATHSTAR: Nearby AGB stars with the Atacama Compact Array
Context. This is the first publication from the DEATHSTAR project. The overall goal of the project is to reduce the uncertainties of the observational estimates of mass-loss rates from evolved starsExpand
Radiation-pressure-driven sub-Keplerian rotation of the disc around the AGB star L 2 Pup
We study the sub-Keplerian rotation and dust content of the circumstellar material around the asymptotic giant branch (AGB) star L$_2$ Puppis. We find that the thermal pressure gradient alone cannotExpand
An unusual face-on spiral in the wind of the M-type AGB star EP Aquarii
High-resolution interferometric observations of the circumstellar environments of AGB stars show a variety of morphologies. Guided by the unusual carbon monoxide line profile of the AGB star EPExpand


The dust disk and companion of the nearby AGB star L2 Puppis - SPHERE/ZIMPOL polarimetric imaging at visible wavelengths
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 visibleExpand
Born-Again Protoplanetary Disk around Mira B
The Mira AB system is a nearby (~107 pc) example of a wind accreting binary star system. In this class of system, the wind from a mass-losing red giant star (Mira A) is accreted onto a companionExpand
Herschel observations of debris discs orbiting planet-hosting subgiants
Debris discs are commonly detected orbiting main-sequence stars, yet little is known regarding their fate as the star evolves to become a giant. Recent observations of radial velocity detectedExpand
The Very Slow Wind from the Pulsating Semiregular Red Giant, L2 Puppis
We have obtained 11.7 and 17.9 μm images at the Keck I telescope of the circumstellar dust emission from L2 Pup, which is one of the nearest (D = 61 pc) mass-losing, pulsating red giants that has aExpand
Spatially resolved images of dust belt(s) around the planet-hosting subgiant κ CrB
We present Herschel spatially resolved images of the debris disc orbiting the subgiant κ Coronae Borealis (κ CrB). Not only are these the first resolved images of a debris disc orbiting a subgiant,Expand
Orbital migration of the planetary companion of 51 Pegasi to its present location
THE recent discovery1 and confirmation2 of a possible planetary companion orbiting the solar-type star 51 Pegasi represent a breakthrough in the search for extrasolar planetary systems. Analysis ofExpand
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
A Young White Dwarf Companion to Pulsar B1620-26: Evidence for Early Planet Formation
The color and magnitude of the stellar companion indicate that it is an undermassive white dwarf of age 480 × 106 ± 140 × 106 years, which places a constraint on the recent history of this triple system and supports a scenario in which the current configuration arose through a dynamical exchange interaction in the cluster core. Expand
Evolution of Thermally Pulsing Asymptotic Giant Branch Stars V: Constraining the Mass Loss and Lifetimes of Intermediate Mass, Low Metallicity AGB Stars
Thermally-Pulsing Asymptotic Giant Branch (TP-AGB) stars are relatively short lived (less than a few Myr), yet their cool effective temperatures, high luminosities, efficient mass-loss and dustExpand
Evolution of Thermally Pulsing Asymptotic Giant Branch Stars IV. Constraining Mass-Loss & Lifetimes of Low Mass, Low Metallicity AGB Stars
The evolution and lifetimes of thermally pulsating asymptotic giant branch (TP-AGB) stars suffer from significant uncertainties. In this work, we analyze the numbers and luminosity functions ofExpand