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

@article{Kervella2016ALMAOO,
  title={ALMA observations of the nearby AGB star L2 Puppis - I. Mass of the central star and detection of a candidate planet},
  author={Pierre Kervella and Ward Homan and Anita M. S. Richards and Leen Decin and Iain McDonald and Miguel Montarg{\`e}s and Keiichi Ohnaka},
  journal={Astronomy and Astrophysics},
  year={2016},
  volume={596}
}
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… 

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 spatial

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 a

A detailed view on the circumstellar environment of the M-type AGB star EP Aquarii

Cool evolved stars are known to be significant contributors to the enrichment of the interstellar medium through their dense and dusty stellar winds. High resolution observations of these outflows

Atomium: A high-resolution view on the highly asymmetric wind of the AGB star Pi1 Gruis. I. First detection of a new companion and its effect on the inner wind.

The nebular circumstellar environments of cool evolved stars are known to harbour a rich morphological complexity of gaseous structures on different length scales. A large part of these density

ATOMIUM: A high-resolution view on the highly asymmetric wind of the AGB star π1Gruis

The nebular circumstellar environments of cool evolved stars are known to harbour a rich morphological complexity of gaseous structures on different length scales. A large part of these density

Inner dusty envelope of the AGB stars W Hydrae, SW Virginis, and R Crateris using SPHERE/ZIMPOL

Context. The asymptotic giant branch (AGB) marks the final evolutionary stage of stars with initial masses between ~0.8 and 8 M⊙. During this phase, stars undergo copious mass loss, which contributes

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.

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,

On the role of reduced wind mass-loss rate in enabling exoplanets to shape planetary nebulae

We use the stellar evolution code MESA-binary and follow the evolution of three exoplanets and two brown dwarfs (BDs) to determine their potential role in the future evolution of their parent star on

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 stars

References

SHOWING 1-10 OF 59 REFERENCES

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 visible

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 companion

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 detected

K2-97b: A (RE-?)INFLATED PLANET ORBITING A RED GIANT STAR

Strongly irradiated giant planets are observed to have radii larger than thermal evolution models predict. Although these inflated planets have been known for over 15 years, it is unclear whether

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 of

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 stellar

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.

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 dust

EVOLUTION OF THERMALLY PULSING ASYMPTOTIC GIANT BRANCH STARS. IV. CONSTRAINING MASS LOSS AND 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 of

A Neptune-sized transiting planet closely orbiting a 5–10-million-year-old star

A newly born, transiting planet orbiting its star with a period of 5.4 days is reported, which is 50 per cent larger than Neptune, and its mass is less than 3.6 times that of Jupiter, with a true mass likely to be similar to that of Neptune.
...