Episodic formation of cometary material in the outburst of a young Sun-like star

@article{brahm2009EpisodicFO,
  title={Episodic formation of cometary material in the outburst of a young Sun-like star},
  author={P{\'e}ter {\'A}brah{\'a}m and Attila Juh{\'a}sz and Cornelis P. Dullemond and {\'A}gnes K{\'o}sp{\'a}l and Roy van Boekel and Jerone Bouwman and Th. Henning and Attila Mo{\'o}r and L{\'a}szl{\'o} Mosoni and A. Sicilia-Aguilar and Nikoletta Sipos},
  journal={Nature},
  year={2009},
  volume={459},
  pages={224-226}
}
The Solar System originated in a cloud of interstellar gas and dust. The dust is in the form of amorphous silicate particles and carbonaceous dust. The composition of cometary material, however, shows that a significant fraction of the amorphous silicate dust was transformed into crystalline form during the early evolution of the protosolar nebula. How and when this transformation happened has been a question of debate, with the main options being heating by the young Sun and shock heating… Expand
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References

SHOWING 1-10 OF 60 REFERENCES
The building blocks of planets within the ‘terrestrial’ region of protoplanetary disks
TLDR
Sp spatially resolved detections and compositional analyses of dust building blocks in the innermost two astronomical units of three proto-planetary disks imply that silicates crystallize before any terrestrial planets are formed, consistent with the composition of meteorites in the Solar System. Expand
Crystalline Silicates and Dust Processing in the Protoplanetary Disks of the Taurus Young Cluster
We characterize the crystalline-silicate content and spatial distribution of small dust grains in a large sample of protoplanetary disks in the Taurus-Auriga young cluster, using the Spitzer SpaceExpand
On the crystallinity of silicate dust in the interstellar medium
An accurate knowledge of the mineralogy (chemical composition and crystal structure) of the silicate dust in the interstellar medium (ISM) is crucial for understanding its origin in evolved stars,Expand
Annealing of Silicate Dust by Nebular Shocks at 10 AU
Silicate dust grains in the interstellar medium are known to be mostly amorphous, yet crystalline silicate grains have been observed in many long-period comets and in protoplanetary disks. AnnealingExpand
Turbulent Radial Mixing in the Solar Nebula as the Source of Crystalline Silicates in Comets
We present a time-dependent model which investigates the thermal annealing of amorphous silicates in the hot regions of the solar nebula and their diffusive transport to the comet formation zone byExpand
Evolution of Dust and Ice Features around FU Orionis Objects
We present spectra for a sample of 14 FUors and two T Tauri stars observed with Spitzer or ISO. Based on the appearance of the 10 μm silicate feature, we define two categories of FUors. ObjectsExpand
Radial mixing in protoplanetary accretion disks - I. Stationary disc models with annealing and carbon combustion
The interplay between radial mixing process in protoplanetary accretion discs with processes leading to destruction or modication of the extinction properties of abundant dust species has signicantExpand
Radial mixing in protoplanetary accretion disks. V. Models with different element mixtures
Protoplanetary disks as birth places of planets as well as of their host stars bear dierent element mixtures owing to the dierent chemical compositions of the environments where they are born. TheExpand
EX Lupi in quiescence
Aims. EX Lupi is the prototype of EXors, a subclass of low-mass pre-main sequence stars whose episodic eruptions are attributed to temporarily increased accretion. In quiescence the optical andExpand
ENERGETIC PROCESSING OF INTERSTELLAR SILICATE GRAINS BY COSMIC RAYS
While a significant fraction of silicate dust in stellar winds has a crystalline structure, in the interstellar medium nearly all of it is amorphous. One possible explanation for this observation isExpand
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