SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Takami Michihiro)
 

Sökning: WFRF:(Takami Michihiro) > The origin of tail-...

  • Vorobyov, Eduard I.Ural Federal University,Southern Federal University,University of Vienna (författare)

The origin of tail-like structures around protoplanetary disks

  • Artikel/kapitelEngelska2020

Förlag, utgivningsår, omfång ...

  • 2020-04-01
  • EDP Sciences,2020

Nummerbeteckningar

  • LIBRIS-ID:oai:lup.lub.lu.se:d7181c8d-d894-4a2d-b406-2e8567344225
  • https://lup.lub.lu.se/record/d7181c8d-d894-4a2d-b406-2e8567344225URI
  • https://doi.org/10.1051/0004-6361/201936990DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • Aims. We study the origin of tail-like structures recently detected around the disk of SU Aurigae and several FU Orionis-type stars. Methods. Dynamic protostellar disks featuring ejections of gaseous clumps and quiescent protoplanetary disks experiencing a close encounter with an intruder star were modeled using the numerical hydrodynamics code FEOSAD. Both the gas and dust dynamics were taken into account, including dust growth and mutual friction between the gas and dust components. Only plane-of-the-disk encounters were considered. Results. Ejected clumps produce a unique type of tail that is characterized by a bow-shock shape. Such tails originate from the supersonic motion of ejected clumps through the dense envelope that often surrounds young gravitationally unstable protostellar disks. The ejected clumps either sit at the head of the tail-like structure or disperse if their mass is insufficient to withstand the head wind of the envelope. On the other hand, close encounters with quiescent protoplanetary disks produce three types of the tail-like structure; we define these as pre-collisional, post-collisional, and spiral tails. These tails can in principle be distinguished from one another by particular features of the gas and dust flow in and around them. We find that the brown-dwarf-mass intruders do not capture circumintruder disks during the encounter, while the subsolar-mass intruders can acquire appreciable circumintruder disks with elevated dust-to-gas ratios, which can ease their observational detection. However, this is true only for prograde collisions; the retrograde intruders fail to collect appreciable amounts of gas or dust from the disk of the target. The mass of gas in the tail varies in the range 0.85-11.8 MJup, while the total mass of dust lies in the 1.75-30.1 M⊙ range, with the spiral tails featuring the highest masses. The predicted mass of dust in the model tail-like structures is therefore higher than what was inferred for similar structures in SU Aur, FU Ori, and Z CMa, making their observational detection feasible. Conclusions. Tail-like structures around protostellar and protoplanetary disks can be used to infer interesting phenomena such as clump ejection or close encounters. In particular, the bow-shock morphology of the tails could point to clump ejections as a possible formation mechanism. Further numerical and observational studies are needed to better understand the detectability and properties of the tails.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Skliarevskii, Alexandr M.Southern Federal University (författare)
  • Elbakyan, Vardan G.Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science,Southern Federal University(Swepub:lu)va8880el (författare)
  • Takami, MichihiroAcademia Sinica, Institute of Astronomy and Astrophysics (författare)
  • Liu, Hauyu BaobabAcademia Sinica, Institute of Astronomy and Astrophysics (författare)
  • Liu, Sheng YuanAcademia Sinica, Institute of Astronomy and Astrophysics (författare)
  • Akiyama, EijiHokkaido University (författare)
  • Ural Federal UniversitySouthern Federal University (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Astronomy and Astrophysics: EDP Sciences6350004-63611432-0746

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy