Results 91 to 100 of about 16,676 (207)

Surface Energy of Insoluble Organic Matter Simulant: Evaluation Based on Adhesive Force Measured by Centrifugal and Impact Separation Methods

The Planetary Science Journal
In protoplanetary disks, organic mantle is regarded as promoting the collisional sticking of rocky dust grains. However, the surface energy, which is one of the primary factors determining collisional sticking, has not been well quantified.
Yuuya Nagaashi, Yoshihiro Furukawa, Akiko M. Nakamura   +2 more
doaj   +1 more source

The Empirical and Radiative Transfer Hybrid (EaRTH) Disk Model: Merging Analyses of Protoplanetary Dust Disk Mineralogy and Structure

The Astrophysical Journal
Our understanding of how exoplanets form and evolve relies on analyses of both the mineralogy of protoplanetary disks and their detailed structures; however, these key complementary aspects of disks are usually studied separately.
William Grimble, Joel Kastner, Christophe Pinte, Beth Sargent, David A. Principe, Annie Dickson-Vandervelde, Aurora Belén Aguayo, Claudio Caceres, Matthias R. Schreiber, Keivan G. Stassun   +9 more
doaj   +1 more source

JVLA Measurement of Grain Size in the Compact Dust Ring Around Class I Protostar WL 17

The Astronomical Journal
The maximum grain size in protoplanetary disks is a critical parameter for planet formation, as the efficiency of mechanisms like streaming instability and pebble accretion depend on grain size.
Jun Hashimoto, Hauyu Baobab Liu, Ruobing Dong, Beibei Liu, Takayuki Muto   +4 more
doaj   +1 more source

Dead Zones as Thermal Barriers to Rapid Planetary Migration in Protoplanetary Disks

, 2010
Planetary migration in standard models of gaseous protoplanetary disks is known to be very rapid ($\sim 10^5$ years) jeopardizing the existence of planetary systems.
Baruteau, Chiang, D'Alessio, D'Angelo, Dullemond, Jang-Condell, Johnson, Kretke, Laughlin, Masset, Matsumura, Menou, Oishi, Schlaufman, Scholz, Shakura, Tanaka, Udry, Ward   +18 more
core   +1 more source

exoALMA. I. Science Goals, Project Design, and Data Products

The Astrophysical Journal Letters
Planet formation is a hugely dynamic process requiring the transport, concentration, and assimilation of gas and dust to form the first planetesimals and cores.
Richard Teague, Myriam Benisty, Stefano Facchini, Misato Fukagawa, Christophe Pinte, Sean M. Andrews, Jaehan Bae, Marcelo Barraza-Alfaro, Gianni Cataldi, Nicolás Cuello, Pietro Curone, Ian Czekala, Daniele Fasano, Mario Flock, Maria Galloway-Sprietsma, Himanshi Garg, Cassandra Hall, Iain Hammond, Thomas Hilder, Jane Huang, John D. Ilee, Andrés F. Izquierdo, Kazuhiro Kanagawa, Geoffroy Lesur, Giuseppe Lodato, Cristiano Longarini, Ryan A. Loomis, Frédéric Masset, Francois Menard, Ryuta Orihara, Daniel J. Price, Giovanni Rosotti, Jochen Stadler, Leonardo Testi, Hsi-Wei Yen, Gaylor Wafflard-Fernandez, David J. Wilner, Andrew J. Winter, Lisa Wölfer, Tomohiro C. Yoshida, Brianna Zawadzki   +40 more
doaj   +1 more source

Measuring the Two-dimensional Thermal Structures of Protoplanetary Disks

The Astrophysical Journal
We present a flexible, annulus-by-annulus method to constrain the 2D thermal structure of a protoplanetary disk from optically thick spectral line emission.
Anna J. Fehr, Sean M. Andrews
doaj   +1 more source

Tracing Pebble Drift History in Two Protoplanetary Disks with CO Enhancement

The Astrophysical Journal
Pebble drift is an important mechanism for supplying the materials needed to build planets in the inner region of protoplanetary disks. Thus, constraining pebble drift’s timescales and mass flux is essential to understanding planet formation history ...
Tayt Armitage, Joe Williams, Ke Zhang, Sebastiaan Krijt, Leon Trapman, Richard A. Booth, Richard Teague, Charles J. Law, Chunhua Qi, David J. Wilner, Karin I. Öberg, Edwin A. Bergin, Sean M. Andrews, Romane Le Gal, Feng Long, Jane Huang, Jaehan Bae, Felipe Alarcón   +17 more
doaj   +1 more source

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO). I. Program Overview and Summary of First Results

The Astrophysical Journal
We present the Atacama Large Millimeter/submillimeter Array Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO), a large program of the ALMA. AGE-PRO aims to systematically trace the evolution of gas disk mass and size throughout the lifetime of ...
Ke Zhang, Laura M. Pérez, Ilaria Pascucci, Paola Pinilla, Lucas A. Cieza, John Carpenter, Leon Trapman, Dingshan Deng, Carolina Agurto-Gangas, Anibal Sierra, Nicolás T. Kurtovic, Dary A. Ruiz-Rodriguez, Miguel Vioque, James Miley, Benoît Tabone, Camilo González-Ruilova, Rossella Anania, Giovanni P. Rosotti, Estephani TorresVillanueva, Michiel R. Hogerheijde, Kamber Schwarz, Aleksandra Kuznetsova   +21 more
doaj   +1 more source

X-ray processing of a realistic ice mantle can explain the gas abundances in protoplanetary disks. [PDF]

Proc Natl Acad Sci U S A, 2020
Ciaravella A, Muñoz Caro GM, Jiménez-Escobar A, Cecchi-Pestellini C, Hsiao LC, Huang CH, Chen YJ.   +6 more
europepmc   +1 more source

On Kinematic Measurements of Self-gravity in Protoplanetary Disks

The Astrophysical Journal
Using controlled injection and recovery experiments, we devised an analysis prescription to assess the quality of dynamical measurements of protoplanetary disk gas masses based on resolved (CO) spectral line data, given observational limitations ...
Sean M. Andrews, Richard Teague, Christopher P. Wirth, Jane Huang, Zhaohuan Zhu   +4 more
doaj   +1 more source