Results 171 to 180 of about 71,588 (268)

Protoplanet and Proto-Brown Dwarf Clumps in Gravitationally Unstable Protoplanetary Disks of Various Metallicity

open access: yesUniverse
Gravitational fragmentation of a protoplanetary disk is considered a possible mechanism for the formation of planets and brown dwarfs. In this process, transitory objects are formed that are known as clumps, which are compact gas–dust condensations with ...
Eduard Vorobyov, Carina Schoenhacker
doaj   +1 more source

Evidence for a Developing Gap in a 10 Myr Old Protoplanetary Disk [PDF]

open access: green, 2002
Nuria Calvet   +5 more
openalex   +1 more source

The Carbon Isotopic Ratio and Planet Formation

open access: yesThe Astrophysical Journal
We present the first detection of ^13 CCH in a protoplanetary disk (TW Hya). Using observations of C _2 H, we measure CCH/ ^13 CCH = 65 ± 20 gas with a CO isotopic ratio of ^12 CO/ ^13 CO = 21 ± 5.
Edwin A. Bergin   +8 more
doaj   +1 more source

Formation of Giant Planets by Fragmentation of Protoplanetary Disks [PDF]

open access: green, 2002
Lucio Mayer   +3 more
openalex   +1 more source

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