Results 81 to 90 of about 376,241 (261)

Disk2Planet: A Robust and Automated Machine Learning Tool for Parameter Inference in Disk–Planet Systems

The Astrophysical Journal
We introduce Disk2Planet, a machine-learning-based tool to infer key parameters in disk–planet systems from observed protoplanetary disk structures. Disk2Planet takes as input the disk structures in the form of 2D density and velocity maps, and outputs ...
Shunyuan Mao, Ruobing Dong, Kwang Moo Yi, Lu Lu, Sifan Wang, Paris Perdikaris   +5 more
doaj   +1 more source

Hydration and dehydration of CM chondrites revealed by X‐ray diffraction combined with textural observations and compositional data

Meteoritics &Planetary Science, Volume 60, Issue 5, Page 1194-1215, May 2025.
Abstract The in‐plane rotation method is used to obtain X‐ray random diffraction (XRD) patterns of polished thin sections of 10 CM chondrites. The samples include five intermediately altered CM chondrites with subtypes 2.6–2.3, two heavily altered CM chondrites with subtype 2.0 and three with secondary heating after hydration (Y 980036, Y 980051, and ...
Naoya Imae, Makoto Kimura, Akira Yamaguchi   +2 more
wiley   +1 more source

Protoplanetary Disk Masses from Radiative Transfer Modeling: A Case Study in Taurus [PDF]

Astronomical Journal, 2019
Measuring the masses of protoplanetary disks is crucial for understanding their planet-forming potential. Typically, dust masses are derived from (sub-)millimeter flux density measurements plus assumptions for the opacity, temperature, and optical depth ...
N. Ballering, J. Eisner
semanticscholar   +1 more source

VORTEX MIGRATION IN PROTOPLANETARY DISKS [PDF]

The Astrophysical Journal, 2010
13 pages, 13 figures, accepted for publication in ...
Paardekooper, Sijme-Jan, Lesur, Geoffroy, Papaloizou, John C. B.   +2 more
openaire   +9 more sources

Sites of Planet Formation in Binary Systems. I. Evidence for Disk−Orbit Alignment in the Close Binary FO Tau

The Astronomical Journal
Close binary systems present challenges to planet formation. As binary separations decrease, so do the occurrence rates of protoplanetary disks in young systems and planets in mature systems.
Benjamin M. Tofflemire, Lisa Prato, Adam L. Kraus, Dominique Segura-Cox, G. H. Schaefer, Rachel Akeson, Sean Andrews, Eric L. N. Jensen, Christopher M. Johns-Krull, J. J. Zanazzi, M. Simon   +10 more
doaj   +1 more source

Petrofabrics in the CM chondrite Kolang: Evidence for non‐spherical chondrules in the protoplanetary disk

Meteoritics &Planetary Science, Volume 60, Issue 2, Page 190-205, February 2025.
Abstract The alignment of non‐spherical “flattened” chondrules into a petrofabric is a common feature of hydrated carbonaceous chondrite meteorites. This texture can form as a result of impacts at peak shock pressures exceeding 10 GPa. However, many carbonaceous chondrites with petrofabrics are unshocked.
Laura E. Jenkins, Martin R. Lee, Luke Daly, Ashley J. King, Cameron J. Floyd, Peter Chung, Sammy Griffin   +6 more
wiley   +1 more source

Emission from Multiple Molecular Isotopologues in a High-inclination Protoplanetary Disk

The Astronomical Journal
We present a MIRI-MRS spectrum of the high-inclination protoplanetary disk around the solar-mass (K0) star MY Lup, obtained as part of the JWST Disk Infrared Spectral Chemistry Survey (JDISCS). The spectrum shows an unusually weak water emission spectrum
Colette Salyk, Klaus M. Pontoppidan, Andrea Banzatti, Edwin Bergin, Nicole Arulanantham, Joan Najita, Geoffrey A. Blake, John Carr, Ke Zhang, Chengyan Xie   +9 more
doaj   +1 more source

CI Traces the Disk Atmosphere in the IM Lup Protoplanetary Disk

The Astrophysical Journal Letters, 2023
The central star and its energetic radiation fields play a vital role in setting the vertical and radial chemical structure of planet-forming disks.
Charles J. Law, Felipe Alarcón, L. Ilsedore Cleeves, Karin I. Öberg, Teresa Paneque-Carreño   +4 more
doaj   +1 more source

eddy: Extracting Protoplanetary Disk Dynamics with Python

Journal of Open Source Software, 2019
eddy is a Python package which implements several methods for extracting kinematical information from astronomical observations of Doppler shifted molecular line emission in protoplanetary disks, the birthplace of planets.
R. Teague
semanticscholar   +1 more source

The Orbit of the Companion to HD 100453A: Binary-driven Spiral Arms in a Protoplanetary Disk [PDF]

, 2018
HD 100453AB is a 10 ± 2 Myr old binary whose protoplanetary disk was recently revealed to host a global two-armed spiral structure. Given the relatively small projected separation of the binary (1.″05, or ∼108 au), gravitational perturbations by the ...
K. Wagner, R. Dong, P. Sheehan, D. Apai, M. Kasper, M. McClure, K. Morzinski, L. Close, J. Males, P. Hinz, S. Quanz, J. Fung   +11 more
semanticscholar   +1 more source