Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Shangjia Zhang"'
Autor:
Shangjia Zhang, Zhaohuan Zhu
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 2, p L38 (2024)
Shadows are often observed in transition disks, which can result from obscuring by materials closer to the star, such as a misaligned inner disk. While shadows leave apparent darkened emission as observational signatures, they have significant dynami
Externí odkaz:
https://doaj.org/article/76f06ed30d7a43a6b7a829002728e45a
Autor:
Jane Huang, Megan Ansdell, Tilman Birnstiel, Ian Czekala, Feng Long, Jonathan Williams, Shangjia Zhang, Zhaohuan Zhu
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 132 (2024)
The Atacama Large Millimeter/submillimeter Array (ALMA) has detected substructures in numerous protoplanetary disks at radii from a few to over 100 au. These substructures are commonly thought to be associated with planet formation, either by serving
Externí odkaz:
https://doaj.org/article/093acb18a26b442883db7adfcb310537
Autor:
Nicole L. Wallack, Jean-Baptiste Ruffio, Garreth Ruane, Bin B. Ren, Jerry W. Xuan, Marion Villenave, Dimitri Mawet, Karl Stapelfeldt, Jason J. Wang, Michael C. Liu, Olivier Absil, Carlos Alvarez, Jaehan Bae, Charlotte Bond, Michael Bottom, Benjamin Calvin, Élodie Choquet, Valentin Christiaens, Therese Cook, Bruno Femenía Castellá, Carlos Gomez Gonzalez, Greta Guidi, Elsa Huby, Joel Kastner, Heather A. Knutson, Tiffany Meshkat, Henry Ngo, Sam Ragland, Maddalena Reggiani, Luca Ricci, Eugene Serabyn, Taichi Uyama, Jonathan P. Williams, Peter Wizinowich, Zoe Zawol, Shangjia Zhang, Zhaohuan Zhu
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 78 (2024)
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of protoplanetary disks in the millimeter continuum have shown a variety of radial gaps, cavities, and spiral features. These substructures may be signposts for ongoing planet fo
Externí odkaz:
https://doaj.org/article/75b89d255bec43c38686d82063430905
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 1, p 29 (2024)
Turbulence is crucial for protoplanetary disk dynamics, and vertical shear instability (VSI) is a promising mechanism in outer disk regions to generate turbulence. We use the Athena++ radiation module to study VSI in full and transition disks, accoun
Externí odkaz:
https://doaj.org/article/46a027d815534eec90d80afdecc5e638
Autor:
Shangjia Zhang, Zhaohuan Zhu, Takahiro Ueda, Akimasa Kataoka, Anibal Sierra, Carlos Carrasco-González, Enrique Macías
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 96 (2023)
Dust particle sizes constrained from dust continuum and polarization observations by radio interferometry are inconsistent by at least an order of magnitude. Motivated by porous dust observed in small solar system bodies (e.g., from the Rosetta missi
Externí odkaz:
https://doaj.org/article/63a2d7960c76471aa07ce11bc808eb70
Autor:
Shangjia Zhang, Matt Kalscheur, Feng Long, Ke Zhang, Deryl E. Long, Edwin A. Bergin, Zhaohuan Zhu, Leon Trapman
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 2, p 108 (2023)
Observations of substructure in protoplanetary disks have largely been limited to the brightest and largest disks, excluding the abundant population of compact disks, which are likely sites of planet formation. Here, we reanalyze ∼0.″1, 1.33 mm A
Externí odkaz:
https://doaj.org/article/c19e49a0b4244d21bc2d2e8a9ce74c00
Detecting young planets in protoplanetary disks is essential to infer where and when planets form and how massive they are, putting stringent constraints on planet formation theory. Despite thousands of exoplanets having been discovered, only a few o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43ea1e21d6cd37e950b20ef98cd3b88d
We developed Convolutional Neural Networks (CNNs) to rapidly and directly infer the planet mass from radio dust continuum images. Substructures induced by young planets in protoplanetary disks can be used to infer the potential young planets' propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df4b2a4a528d79d49389b727e2b6e9fe
http://arxiv.org/abs/2111.15196
http://arxiv.org/abs/2111.15196
Autor:
Feng Long, Sean M. Andrews, Shangjia Zhang, Chunhua Qi, Myriam Benisty, Stefano Facchini, Andrea Isella, David J. Wilner, Jaehan Bae, Jane Huang, Ryan A. Loomis, Karin I. Öberg, Zhaohuan Zhu
Publikováno v:
The Astrophysical Journal Letters. 937:L1
We present deep high-resolution ($\sim$50 mas, 8 au) ALMA 0.88 and 1.3 mm continuum observations of the LkCa 15 disk. The emission morphology shows an inner cavity and three dust rings at both wavelengths, but with slightly narrower rings at the long
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41391b162d768a842960723e0effa7c2
https://doi.org/10.3847/2041-8213/ac8b10
https://doi.org/10.3847/2041-8213/ac8b10
Autor:
Anibal Sierra, Akimasa Kataoka, Zhaohuan Zhu, Shangjia Zhang, Carlos Carrasco-González, Takahiro Ueda
The polarimetric observations on the protoplanetary disk around HL Tau have shown the scattering-induced polarization at ALMA Band 7, which indicates that the maximum dust size is $\sim 100~{\rm \mu m}$, while the Spectral Energy Distribution (SED) h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ead7a094f79949889266b93ff96429ab