Nine Localized Deviations from Keplerian Rotation in the DSHARP Circumstellar Disks: Kinematic Evidence for Protoplanets Carving the Gaps

We present evidence for localized deviations from Keplerian rotation, i.e., velocity "kinks," in 8 of the 18 circumstellar disks observed by the DSHARP program: DoAr 25, Elias 2-27, GW Lup, HD 143006, HD 163296, IM Lup, Sz 129, and WaOph 6. Most of the kinks are detected over a small range...

Celý popis

Uloženo v:

Podrobná bibliografie
Vydáno v:	Astrophysical journal. Letters Ročník 890; číslo 1; s. L9
Hlavní autoři:	Pinte, C., Price, D. J., Ménard, F., Duchêne, G., Christiaens, V., Andrews, S. M., Huang, J., Hill, T., van der Plas, G., Perez, L. M., Isella, A., Boehler, Y., Dent, W. R. F., Mentiplay, D., Loomis, R. A.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	The American Astronomical Society 10.02.2020 Bristol : IOP Publishing IOP Publishing
Témata:	1241 1300 1647 Astrophysics Astrophysics - Earth and Planetary Astrophysics Astrophysics - Solar and Stellar Astrophysics Astrophysics of Galaxies Aérospatiale, astronomie & astrophysique Physical, chemical, mathematical & earth Sciences Physique, chimie, mathématiques & sciences de la terre Planet formation Protoplanetary disks Sciences of the Universe Space science, astronomy & astrophysics Submillimeter astronomy Astrophysics - Astrophysics of Galaxies Submillimeter astronomy Protoplanetary disks Astrophysics - Earth and Planetary Astrophysics Planet formation Astrophysics - Solar and Stellar Astrophysics
ISSN:	2041-8205, 0004-637X, 1538-4357, 2041-8213
On-line přístup:	Získat plný text
Tagy:	Přidat tag Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!

Popis
Shrnutí:	We present evidence for localized deviations from Keplerian rotation, i.e., velocity "kinks," in 8 of the 18 circumstellar disks observed by the DSHARP program: DoAr 25, Elias 2-27, GW Lup, HD 143006, HD 163296, IM Lup, Sz 129, and WaOph 6. Most of the kinks are detected over a small range in both radial extent and velocity, suggesting a planetary origin, but for some of them foreground contamination prevents us from measuring their spatial and velocity extent. Because of the DSHARP limited spectral resolution and signal to noise in the 12CO J = 2−1 line, as well as cloud contamination, the kinks are usually detected in only one spectral channel, and will require confirmation. The strongest circumstantial evidence for protoplanets in the absence of higher spectral resolution data and additional tracers is that, upon deprojection, we find that all of the candidate planets lie within a gap and/or at the end of a spiral detected in dust continuum emission. This suggests that a significant fraction of the dust gaps and spirals observed by Atacama Large Millimeter/submillimeter Array in disks are caused by embedded protoplanets.
Bibliografie:	AAS20735 scopus-id:2-s2.0-85081325000
ISSN:	2041-8205 0004-637X 1538-4357 2041-8213
DOI:	10.3847/2041-8213/ab6dda