Results 271 to 280 of about 394,629 (288)

Protoplanetary Disk

Encyclopedia of Astrobiology, 2021
Jonathan P. Williams, M. Hogerheijde
semanticscholar   +3 more sources

A circumbinary protoplanetary disk in a polar configuration

Nature Astronomy, 2019
Nearly all young stars are initially surrounded by ‘protoplanetary’ disks of gas and dust, and in the case of single stars at least 30% of these disks go on to form planets1.
G. Kennedy, L. Matrá, Stefano Facchini, Julien Milli, O. Panić, Daniel J. Price, D. Wilner, M. Wyatt, B. Yelverton   +8 more
semanticscholar   +1 more source

Protostars and Protoplanetary Disks [PDF]

Astrophysics and Space Science, 1997
A great wealth of observational information about young stars has been obtained at infrared and longer wavelengths in the last decade. Combined with continued theoretical progress, these observations have pushed our understanding of the overall star formation process to a satisfying level.
openaire   +1 more source

Constraining Gas-phase Carbon, Oxygen, and Nitrogen in the IM Lup Protoplanetary Disk

Astrophysical Journal, 2018
We present new constraints on gas-phase C, N, and O abundances in the molecular layer of the IM Lup protoplanetary disk. Building on previous physical and chemical modeling of this disk, we use new ALMA observations of C2H to constrain the C/O ratio in ...
L. Cleeves, K. Oberg, D. Wilner, Jane Huang, R. Loomis, S. Andrews, V. V. G. H. CfA, U. Virginia, National Radio Astronomy Observatory, Joint Alma Observatory   +9 more
semanticscholar   +1 more source

Protoplanetary Disk, Chemistry

2011
▶ Protoplanetary disks (PPDs) surrounding young stars are short-lived (~1–10 Myr), compact (~10–1,000 AU) rotating reservoirs of gas and dust. Disks are believed to be the birthplaces of planetary systems, where tiny grains are assembled into pebbles,▶ planetesimals, and eventually planets, asteroids, and comets.
openaire   +2 more sources

Protoplanetary Disks

1996
Not ...
openaire   +2 more sources

The partitioning of the inner and outer Solar System by a structured protoplanetary disk

Nature Astronomy, 2020
R. Brasser, S. Mojzsis, S. Mojzsis
semanticscholar   +1 more source

Protostellar and Protoplanetary Disks [PDF]

, 1997
It is barely a decade since the first molecular line images of disks around embedded and pre-main sequence stars were published (Beckwith et al., 1986; Mundy et al., 1986; Sargent & Beckwith 1987). In the intervening years there has been steady progress in detecting and analyzing these disks, which are an expected by-product of the star formation ...
openaire   +2 more sources