Results 121 to 130 of about 42,848 (232)
The Astrophysical JournalWe present JWST broadband images of the highly inclined protoplanetary disk SSTc2d J163131.2-242627 (Oph163131) from 2.0 to 21 μ m. The images show a remarkable evolution in disk structure with wavelength, quite different from previous JWST observations ...
Marion Villenave +8 more
doaj +1 more source
The Extent of Solar Energetic Particle Irradiation in the Sun’s Protoplanetary Disk
The Astrophysical JournalSolar flares emit X-rays and high-energy (MeV to GeV) ions called solar energetic particles (SEPs). Astronomical observations show solar-mass protostellar fluxes are a factor Φ ≈ 3 × 10 ^2 –3 × 10 ^3 times higher than the present-day Sun.
Steven J. Desch +3 more
doaj +1 more source
87th Annual Meeting of the Meteoritical Society 2025: Contents
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 2-29, August 2025.
wiley +1 more source
The Astrophysical JournalAge-benchmark brown dwarf and planetary-mass-object spectroscopy is key to characterizing substellar evolution. In this paper, we present the JHK medium-resolution ( R ∼ 3000) spectra of 25 7–76 M _Jup (spectral types L3.0–M6.0) brown dwarfs and ...
Elena Manjavacas +5 more
doaj +1 more source
87th Annual Meeting of the Meteoritical Society 2025: Abstracts
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley +1 more source
Modeling the Impact of Moderate External UV Irradiation on Disk Chemistry
The Astrophysical JournalThe chemistry within a protoplanetary disk is greatly affected by external radiation from the local stellar environment. Previous work has focused on extreme radiation fields, representative of the center of something like the Orion Nebula Cluster ...
Rachel E. Gross, L. Ilsedore Cleeves
doaj +1 more source
The chemical composition of the post-AGB star, protoplanetary nebula candidate IRAS 22272+5435=SAO 34504 [PDF]
, 1995 Li Z. S. +2 more
openalex +1 more source
The Impact of External Radiation on the Inner Disk Chemistry of Planet Formation
The Astrophysical JournalThe vast majority of young stars hosting planet-forming disks exist within clustered environments, like the Orion Nebula, implying that seemingly “extreme” UV environments (10 ^4 G _0 and above) are not so atypical in the context of planet formation ...
Jenny K. Calahan +2 more
doaj +1 more source
Thermal and hydrostatic structure of the protoplanetary nebula exposed to stellar radiation and stellar wind from the central star [PDF]
, 2007 Young Seok Yun +2 more
openalex +1 more source
Evolution of the Solar Nebula. III. Protoplanetary Disks Undergoing Mass Accretion [PDF]
, 1997 Alan P. Boss
openalex +1 more source