Results 101 to 110 of about 22,425 (264)

Unveiling the Chemical Complexity and C/O Ratio of the HD 163296 Protoplanetary Disk: Constraints from Multiline ALMA Observations of Organics, Nitriles, and Sulfur-bearing and Deuterated Molecules

open access: yesThe Astrophysical Journal Supplement Series
The physical and chemical conditions within a protoplanetary disk play a crucial role in determining its chemical composition, which is subsequently inherited by any forming planets. To probe these conditions, high-resolution molecular line observations,
Parashmoni Kashyap   +15 more
doaj   +1 more source

Protoplanetary Disks and Their Evolution [PDF]

open access: green, 2011
Jonathan P. Williams, Lucas A. Cieza
openalex   +1 more source

Dynamics of Protoplanetary Disks [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 2011
Protoplanetary disks are quasi-steady structures whose evolution and dispersal determine the environment for planet formation. I review the theory of protoplanetary disk evolution and its connection to observations. Substantial progress has been made in elucidating the physics of potential angular momentum transport processes—including self-gravity ...
openaire   +2 more sources

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO). XI. Beam-corrected Gas Disk Sizes from Fitting 12CO Moment Zero Maps

open access: yesThe Astrophysical Journal
The inward drift of millimeter–centimeter sized pebbles in protoplanetary disks has become an important part of our current theories of planet formation and, more recently, planet composition as well.
Leon Trapman   +18 more
doaj   +1 more source

SMA and NOEMA Reveal Asymmetric Substructure in the Protoplanetary Disk of IRAS 23077+6707

open access: yesThe Astrophysical Journal
We present high-resolution data of IRAS 23077+6707 (“ Dracula’s Chivito ”) with the Submillimeter Array (SMA at 1.33 mm/225.5 GHz) and the Northern Extended Millimeter Array (NOEMA at 2.7 mm/111.7 GHz and 3.1 mm/96.2 GHz).
Joshua B. Lovell   +7 more
doaj   +1 more source

Theory of Disk Accretion onto Magnetic Stars

open access: yesEPJ Web of Conferences, 2014
Disk accretion onto magnetic stars occurs in a variety of systems, including accreting neutron stars (with both high and low magnetic fields), white dwarfs, and protostars.
Lai Dong
doaj   +1 more source

Light Echoes of Time-resolved Flares and Application to Kepler Data

open access: yesThe Open Journal of Astrophysics
Light echoes of stellar flares provide an intriguing option for exploring protoplanetary disks in young stellar systems. Previous work on light echoes of circumstellar disks made use of delta-function flares for modeling.
Austin King, Benjamin C. Bromley
doaj   +1 more source

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