Observing planet-bearing disks and disk-embedded planets
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protoplanet protoplanetary disks SIM Space Interfe↗
Engineering topics
Yorke, H.
Publications and source records attributed to Yorke, H..
SAFIR: the single aperture far infrared observatory
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far infrared large telescopes↗
SAFIR, the Single Aperture Far-Infrared Observatory, the next big step beyond SIRTF and Herschel
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SAFIR stars galaxies↗
SAFIR, the Single Aperture Far-Infrared Observatory: the next big step beyond SIRTF and Herschel
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SAFIR Single Aperture Far-Infraed Observatory Hers↗
Can Massive Stars Be Formed by Accretion?
Although massive stars play a critical role in the production of turbulent energy in the ISM, in the formation and destruction of molecular clouds, and ultimately in the dynamical and chemodynamical evolution of galaxies, our understanding of the sequence of events which leads to their formation is still rather limited.
Star formation accretion disks radiation hydrodyna↗
The Space Infrared Interferometry Trailblazer (SPIRIT)
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SPIRIT far infrared interferometry direct-detectio↗
Space-based Interferometric Telescopes for the Far Infrared
We discuss concepts for deploying direct detection interferometers in space which are optimized for the wavelength range 40 meu to 500 meu. In particular we introduce two missions in NASA's current strategic plan: SPIRIT (SPace InfraRed Interferometric Telescope) and SPECS (Submillimeter Probe of the Evolution of Cosmic Structure).
infrared↗
The Low-Mass Stellar Content of the Scorpius-Centaurus OB Association
Based on ROSAT observations and data obtained with ground-based telescopes, we have carried out an extensive study of the low-mass pre-main-sequence population in Upper Scorpius, the youngest subgroup of the Scorpius-Centaurus OB association.
open clusters and associations galaxy: stellar con↗
A Phase Shifting and Nulling Interferometer for TPF
We present an interferometer design that provides a null at the star and a direct measurement of both visibility amplitude and phase of the planets.
interferometry extra solar planets synthesis imagi↗
Dust Coagulation in Infalling Protostellar Envelopes I. Compact Grains
Dust plays a key role in the optical, thermodynamic and gas dynamical behavior of collapsing molecular cores. Because of relative velocities of the individual dust grains, coagulation and shattering can modify the grain size distribution and -- due to corresponding changes in the medium's opacity significantly -- influence the evolution during early phases of star formation.
hydrodynamics radiation transfer circumstellar mat↗
Modeling High Spatial Resolution Images of Protostellar Disks
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Star formation protostellar disks↗
Photoevaporation of Protostellar Disks V. Circumstellar Disks Under the Influence of Both EUV and FUV Radiation
The evolution and appearance of protostellar disks can be significantly altered by their UV environment. We follow the evolution after the external UV radiation source has been turned on.
HII Regions Hydrodynamics Radiation Transfer Stars↗
HST/WFPC2 and VLT/ISAAC Observations of Proplyds in the Giant HII Region NGC 3603(sup a)
We report the discovery of three proplyd-like structures in the giant HII region NGC 3603.
circumstellar matter star formation open clusters ↗
Dust Evolution in Protostellar Accretion Disks
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hydrodynamics radiation transfer dust evolution ci↗
Dust Coagulation in Infalling Protostellar Envelopes I. Compact Grains
Dust plays a key role in the optical, thermodynamic and gas dynamical behavior of collapsing molecular cores. Because of relative velocities of the individual dust grains, coagulation and shattering can modify the grain size distribution and due to corresponding changes in the medium's opacity significantly influence the evolution during early phase of star formation.
hydrodynamics radiation transfer circumstellar mat↗
Dust Coagulation in Infalling Protostellar Envelopes I. Compact Grains
Dust plays a key role in the optical, thermodynamic and gas dynamical behavior of collapsing molecular cores.
molecular cores thermodynamic Infalling Protostell↗
Disk Dispersal Around Young Stars
We review the evidence pertaining to the lifetimes of planet-forming disks and discuss possible disk dispersal mechanisms: 1) viscous accretion of material onto the central source, 2) close stellar encounters, 3) stellar winds, and 4) photoevaporation by ultraviolet radiation.
circumstellar↗