Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Speedie, Jessica"'
Autor:
Speedie, Jessica, Dong, Ruobing, Hall, Cassandra, Longarini, Cristiano, Veronesi, Benedetta, Paneque-Carreño, Teresa, Lodato, Giuseppe, Tang, Ya-Wen, Teague, Richard, Hashimoto, Jun
The canonical theory for planet formation in circumstellar disks proposes that planets are grown from initially much smaller seeds. The long-considered alternative theory proposes that giant protoplanets can be formed directly from collapsing fragmen
Externí odkaz:
http://arxiv.org/abs/2409.02196
Autor:
Calcino, Josh, Norfolk, Brodie, Price, Daniel J., Hilder, Thomas, Speedie, Jessica, Pinte, Christophe, Garg, Himanshi, Teague, Richard, Hall, Cassandra, Stadler, Jochen
Kinematic studies of protoplanetary discs are a valuable method for uncovering hidden companions. In the first paper of this series, we presented five morphological and kinematic criteria that aid in asserting the binary nature of a protoplanetary di
Externí odkaz:
http://arxiv.org/abs/2407.21309
Autor:
Longarini, Cristiano, Lodato, Giuseppe, Clarke, Cathie J., Speedie, Jessica, Paneque-Carreno, Teresa, Arrigoni, Edoardo, Curone, Pietro, Toci, Claudia, Hall, Cassandra
Gravitational instability is thought to be one of the main drivers of angular momentum transport in young protoplanetary discs. The disc around Elias 2-27 offers a unique example of gravitational instability at work. It is young and massive, displayi
Externí odkaz:
http://arxiv.org/abs/2406.05952
ALMA (Atacama Large Millimetre/submillimetre Array) observations of the thermal emission from protoplanetary disc dust have revealed a wealth of substructures that could evidence embedded planets, but planet-driven spirals, one of the more compelling
Externí odkaz:
http://arxiv.org/abs/2404.18925
Autor:
Speedie, Jessica, Dong, Ruobing
Spiral density waves generated by an embedded planet are understood to cause ``kinks'' in observed velocity channel maps of CO surface emission, by perturbing the gas motion within the spiral arms. If velocity kinks are a reliable probe of embedded p
Externí odkaz:
http://arxiv.org/abs/2211.05757
ALMA continuum observations of thermal emission from the dust component of protoplanetary disks have revealed an abundance of substructures that may be interpreted as evidence for embedded planets, but planet-driven spiral arms -- perhaps one of the
Externí odkaz:
http://arxiv.org/abs/2203.00692
Publikováno v:
MNRAS, Volume 510, Issue 4, March 2022, Pages 6059-6084
ALMA observations of dust ring/gap structures in a minority but growing sample of protoplanetary disks can be explained by the presence of planets at large disk radii - yet the origins of these planets remains debated. We perform planet formation sim
Externí odkaz:
http://arxiv.org/abs/2111.01798
Autor:
Speedie, Jessica, Zanazzi, J. J.
Publikováno v:
MNRAS 497, 1870-1883 (2020)
Large dips in the brightness for a number of stars have been observed, for which the tentative explanation is occultation of the star by a transiting circumplanetary disk or ring system. In order for the circumplanetary disk/rings to block the host s
Externí odkaz:
http://arxiv.org/abs/1912.00034
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jun2024, Vol. 530 Issue 4, p4802-4825, 24p
Autor:
Speedie, Jessica, Dong, Ruobing
The velocity “kink” kinematic signature has gained standing as a promising method for discovering embedded planets. The gravitational influence of a planetary perturber is predicted to drive spiral wakes that disturb the surrounding gas velocity,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5edf81f62a59e664dce5b700158711f8