Short-term stability of particles in the WD J0914+1914 white dwarf planetary system

Nearly all known white dwarf planetary systems contain detectable rocky debris in the stellar photosphere. A glaring exception is the young and still evolving white dwarf WD J0914+1914, which instead harbours a giant planet and a disc of pure gas. The stability boundaries of this disc and the future...

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Detalles Bibliográficos
Autores principales: Zotos, Euaggelos E., Veras, Dimitri, Saeed, Tareq, Darriba, Luciano Ariel
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Astronómicas
minor planets, asteroids: general
comets: general
protoplanetary discs
planets and satellites: dynamical evolution and stability
planet-star interactions
stars: white dwarfs
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125830
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125830
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
minor planets, asteroids: general
comets: general
protoplanetary discs
planets and satellites: dynamical evolution and stability
planet-star interactions
stars: white dwarfs
spellingShingle Ciencias Astronómicas
minor planets, asteroids: general
comets: general
protoplanetary discs
planets and satellites: dynamical evolution and stability
planet-star interactions
stars: white dwarfs
Zotos, Euaggelos E.
Veras, Dimitri
Saeed, Tareq
Darriba, Luciano Ariel
Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
topic_facet Ciencias Astronómicas
minor planets, asteroids: general
comets: general
protoplanetary discs
planets and satellites: dynamical evolution and stability
planet-star interactions
stars: white dwarfs
description Nearly all known white dwarf planetary systems contain detectable rocky debris in the stellar photosphere. A glaring exception is the young and still evolving white dwarf WD J0914+1914, which instead harbours a giant planet and a disc of pure gas. The stability boundaries of this disc and the future prospects for this white dwarf to be polluted with rocks depend upon the mass and orbit of the planet, which are only weakly constrained. Here we combine an ensemble of plausible planet orbits and masses to determine where observers should currently expect to find the outer boundary of the gas disc. We do so by performing a sweep of the entire plausible phase space with short-term numerical integrations. We also demonstrate that particle-star collisional trajectories, which would lead to the (unseen) signature of rocky metal pollution, occupy only a small fraction of the phase space, mostly limited to particle eccentricities above 0.75. Our analysis reveals that a highly inflated planet on a near-circular orbit is the type of planet which is most consistent with the current observations.
format Articulo
Preprint
author Zotos, Euaggelos E.
Veras, Dimitri
Saeed, Tareq
Darriba, Luciano Ariel
author_facet Zotos, Euaggelos E.
Veras, Dimitri
Saeed, Tareq
Darriba, Luciano Ariel
author_sort Zotos, Euaggelos E.
title Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
title_short Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
title_full Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
title_fullStr Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
title_full_unstemmed Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
title_sort short-term stability of particles in the wd j0914+1914 white dwarf planetary system
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/125830
work_keys_str_mv AT zotoseuaggelose shorttermstabilityofparticlesinthewdj09141914whitedwarfplanetarysystem
AT verasdimitri shorttermstabilityofparticlesinthewdj09141914whitedwarfplanetarysystem
AT saeedtareq shorttermstabilityofparticlesinthewdj09141914whitedwarfplanetarysystem
AT darribalucianoariel shorttermstabilityofparticlesinthewdj09141914whitedwarfplanetarysystem
bdutipo_str Repositorios
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