PLANETESIMAL FORMATION INDUCED BY SINTERING

Journal Article · Wed Jun 01 00:00:00 EDT 2011 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/733/2/L41· OSTI ID:21562636

Sirono, Sin-iti ^[1]

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1. Earth and Environmental Sciences, Nagoya University, Tikusa-ku, Furo-cho, Nagoya 464-8601 (Japan)

Sintering of H{sub 2}O ice proceeds in an icy dust aggregate as the temperature increases due to the infall to the central star. By numerical simulations, I show that fragmentation of the aggregate by sintering occurs at a particular region of a protoplanetary nebula. The fragments accumulate at the region because their infalling velocity is low. The dust surface density exceeds the critical surface density required for gravitational instability to form planetesimals.

• OSTI ID: 21562636
• Journal Information: Astrophysical Journal Letters, Vol. 733, Issue 2; Other Information: DOI: 10.1088/2041-8205/733/2/L41; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COMPUTERIZED SIMULATION
DUSTS
FRAGMENTATION
ICE
PLANETARY NEBULAE
PROTOPLANETS
SINTERING
WATER
FABRICATION
HYDROGEN COMPOUNDS
NEBULAE
OXYGEN COMPOUNDS
SIMULATION