The mass of the young planet Beta Pictoris b through the astrometric motion of its host star

@article{Snellen2018TheMO,
  title={The mass of the young planet Beta Pictoris b through the astrometric motion of its host star},
  author={Ignas A. G. Snellen and Anthony G. A. Brown},
  journal={Nature Astronomy},
  year={2018},
  volume={2},
  pages={883-886}
}
The young massive Jupiters discovered with high-contrast imaging1–4 provide a unique opportunity to study the formation and early evolution of gas giant planets. A key question is to what extent gravitational energy from accreted gas contributes to the internal energy of a newly formed planet. This has led to a range of formation scenarios from ‘cold’ to ‘hot’ start models5–8. For a planet of a given mass, these initial conditions govern its subsequent evolution in luminosity and radius. Except… 
Evidence for an additional planet in the β Pictoris system
With its imaged debris disk of dust, its evaporating exocomets, and an imaged giant planet, the young (~23 Myr) β Pictoris system is a unique proxy for detailed studies of planet formation processes
The Planetary Luminosity Problem: “Missing Planets” and the Observational Consequences of Episodic Accretion
The high occurrence rates of spiral arms and large central clearings in protoplanetary disks, if interpreted as signposts of giant planets, indicate that gas giants commonly form as companions to
CO Detected in CI Tau b: Hot Start Implied by Planet Mass and MK
We acquired high-resolution infrared spectra of CI Tau, the host star of one of the few young planet candidates amenable to direct spectroscopic detection. We confirm the planet’s existence with a
A planet within the debris disk around the pre-main sequence star AU Mic
TLDR
The authors' observations of a planet co-existing with a debris disk offer the opportunity to test the predictions of current models of planet formation and evolution, and a transiting planet with a period of about 8.5 days and a radius 0.4 times that of Jupiter is reported within the debris disk around the star AU Microscopii.
Precise Dynamical Masses of Directly Imaged Companions from Relative Astrometry, Radial Velocities, and Hipparcos–Gaia DR2 Accelerations
We measure dynamical masses for five objects—three ultracool dwarfs, one low-mass star, and one white dwarf—by fitting orbits to a combination of the Hipparcos–Gaia Catalog of Accelerations,
Detection of a Low-mass Stellar Companion to the Accelerating A2IV Star HR 1645
The ∼500 Myr A2IV star HR 1645 has one of the most significant low-amplitude accelerations of nearby early-type stars measured from a comparison of the Hipparcos and Gaia astrometric catalogs. This
The far reaches of the β Pictoris debris disk
The nearby young star beta Pictoris hosts a rich and complex planetary system, with at least two giant planets and a nearly edge-on debris disk that contains several dynamical subpopulations of
An Updated Visual Orbit of the Directly Imaged Exoplanet 51 Eridani b and Prospects for a Dynamical Mass Measurement with Gaia
We present a revision to the visual orbit of the young, directly imaged exoplanet 51 Eridani b using four years of observations with the Gemini Planet Imager. The relative astrometry is consistent
Constraining the initial planetary population in the gravitational instability model
Direct imaging (DI) surveys suggest that gas giants beyond 20 au are rare around FGK stars. However, it is not clear what this means for the formation frequency of gravitational instability (GI)
X-ray irradiation and evaporation of the four young planets around V1298 Tau
Planets around young stars are thought to undergo atmospheric evaporation due to the high magnetic activity of the host stars. Here we report on X-ray observations of V1298 Tau, a young star with
...
...

References

SHOWING 1-10 OF 32 REFERENCES
A Giant Planet Imaged in the Disk of the Young Star β Pictoris
TLDR
It is shown that the ~10-million-year-oldβ Pictoris system hosts a massive giant planet, β Pictoris b, located 8 to 15 astronomical units from the star, which confirms that gas giant planets form rapidly within disks and validates the use of disk structures as fingerprints of embedded planets.
On the Luminosity of Young Jupiters
Traditional thermal evolution models of giant planets employ arbitrary initial conditions selected more for computational expediency than physical accuracy. Since the initial conditions are
Constraints on planets around β Pic with Harps radial velocity data
Context. The β Pictoris system with its debris disk and a massive giant planet orbiting at � 9 AU represents an ideal laboratory for studying giant planet formation and evolution as well as
A probable giant planet imaged in the beta Pictoris disk. VLT/NaCo deep L'-band imaging
Context: Since the discovery of its dusty disk in 1984, β Pictoris has become the prototype of young early-type planetary systems, and there are now various indications that a massive Jovian planet
Orbital characterization of the β Pictoris b giant planet
In June 2010, we confirmed the existence of a giant planet in the disk of the young star Beta Pictoris, located between 8 AU and 15 AU from the star. This young planet offers the rare opportunity to
Full exploration of the giant planet population around β Pictoris
Context. The search for extrasolar planets has been limited so far to close orbit (typ. ≤5 au) planets around mature solar-type stars on the one hand, and to planets on wide orbits (≥10 au) around
SPECTRAL AND PHOTOMETRIC DIAGNOSTICS OF GIANT PLANET FORMATION SCENARIOS
Gas-giant planets that form via core accretion might have very different characteristics from those that form via disk instability. Disk-instability objects are typically thought to have higher
Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager
TLDR
Using the Gemini Planet Imager, a Jupiter-like planet is discovered orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units and has a methane signature and is probably the smallest exoplanet that has been directly imaged.
Direct Imaging of Multiple Planets Orbiting the Star HR 8799
TLDR
High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units.
The β Pictoris Moving Group
Following the 1983 IRAS detection and subsequent imaging of its extensive dusty circumstellar disk, β Pictoris became the prototypical and most studied example of a potential forming planetary
...
...