Molecules in the Carbon-rich Protoplanetary Nebula CRL 2688 [PDF]
The Astrophysical Journal Supplement Series, 2022 We present observations of the carbon-rich protoplanetary nebula CRL 2688 made with the Institut de Radioastronomie Millimétrique 30 m telescope in the 3 and 2 mm bands. In total, 196 transition lines belonging to 38 molecular species and isotopologues
J. Qiu +3 more
semanticscholar +6 more sources
UV Monochromatic Imaging of the Protoplanetary Nebula Hen 3-1475 Using HST STIS [PDF]
Galaxies, 2018 Collimated outflows and jets play a critical role in shaping planetary nebulae (PNe), especially in the brief transition from a spherical AGB envelope to an aspherical PN, which is called the protoplanetary nebula (pPN) phase.
Xuan Fang +5 more
doaj +3 more sources
Size-selective concentration of chondrules and other small particles in protoplanetary nebula turbulence [PDF]
, 2000 Size-selective concentration of particles in a weakly turbulent protoplanetary nebula may be responsible for the initial collection of chondrules and other constituents into primitive body precursors. This paper presents the main elements of this process of turbulent concentration. In the terrestrial planet region, both the characteristic size and size
J. Cuzzi +3 more
arxiv +5 more sources
Small Protoplanetary Disks in the Orion Nebula Cluster and OMC1 with ALMA [PDF]
The Astrophysical Journal, 2021 The Orion Nebula Cluster (ONC) is the nearest dense star-forming region at ∼400 pc away, making it an ideal target to study the impact of high stellar density and proximity to massive stars (the Trapezium) on protoplanetary disk evolution.
J. Otter +7 more
semanticscholar +10 more sources
Chondrule Survivability in the Solar Nebula [PDF]
The Astrophysical JournalThe lifetime of millimeter-sized dust grains, such as chondrules, in the nominal solar nebula model is limited to ∼10 ^5 yr, due to an inward drift driven by gas drag.
Tetsuo Taki, Shigeru Wakita
doaj +4 more sources
Igneous processes in the small bodies of the Solar System I. Asteroids and comets [PDF]
iScience, 2023 Summary: Igneous processes were quite widespread in the small bodies of the Solar System (SBSS) and were initially fueled by short-lived radioisotopes, the proto-Sun, impact heating, and differentiation heating.
Giovanni Leone, Hiroyuki K.M. Tanaka
doaj +2 more sources
Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar Nebula [PDF]
Nature Communications, 2023 The short-lived radionuclide aluminium-26 (26Al) isotope is a major heat source for early planetary melting. The aluminium-26 – magnesium-26 (26Al-26Mg) decay system also serves as a high-resolution relative chronometer.
Evgenii Krestianinov +11 more
doaj +2 more sources
JWST Imaging of Edge-on Protoplanetary Disks. II. Appearance of Edge-on Disks with a Tilted Inner Region: Case Study of IRAS04302+2247 [PDF]
The Astrophysical Journal, 2023 We present James Webb Space Telescope imaging from 2 to 21 μ m of the edge-on protoplanetary disk around the embedded young star IRAS04302+2247. The structure of the source shows two reflection nebulae separated by a dark lane.
Marion Villenave +8 more
doaj +2 more sources
A 4,565-My-old record of the solar nebula field. [PDF]
Proc Natl Acad Sci U S ASignificance Extraterrestrial samples are today our only source of data constraining the longevity, intensity, and geometry of magnetic fields sustained in a protoplanetary disk—our own solar nebula.
Maurel C, Gattacceca J.
europepmc +2 more sources
ALMA Observations of Asymmetric Molecular Gas Emission from a Protoplanetary Disk in the Orion Nebula [PDF]
, 2017 We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of molecular line emission from d216-0939, one of the largest and most massive protoplanetary disks in the Orion Nebula Cluster.
S. Factor +9 more
semanticscholar +2 more sources