Drifting inwards in protoplanetary discs I Sticking of chondritic dust at increasing temperatures

  title={Drifting inwards in protoplanetary discs I Sticking of chondritic dust at increasing temperatures},
  author={Tabea Bogdan and C. Pillich and Joachim Landers and Heiko Wende and Gerhard Wurm},
  journal={Astronomy \& Astrophysics},
Sticking properties rule the early phases of pebble growth in protoplanetary discs in which grains regularly travel from cold, water-rich regions to the warm inner part. This drift affects composition, grain size, morphology, and water content as grains experience ever higher temperatures. In this study we tempered chondritic dust under vacuum up to 1400 K. Afterwards, we measured the splitting tensile strength of millimetre-sized dust aggregates. The deduced effective surface energy starts out… 
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Drifting inwards in protoplanetary discs
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