Attenuation of Millimeter Emission from Circumstellar Disks Induced by the Rapid Dust Accretion

Abstract

From millimeter observations of classical T Tauri stars, it is suggested that dust grains in circumstellar disks have grown to millimeter size or larger. However, gas drag on such large grains induces rapid accretion of the dust. We examine the evolution of dust disks composed of millimeter sized grains, and show that rapid accretion of the dust disk causes attenuation of millimeter continuum emission. If a dust disk is composed mainly of grains of 1 cm to 1 m, its millimeter emission goes off within 10^6 yr. Hence, grains in this size range cannot be a main population of the dust. Considering our results together with grain growth suggested by the millimeter continuum observations, we expect that the millimeter continuum emission of disks comes mainly from grains in a narrow size range of [1 mm -1 cm]. This suggests either that growth of millimeter sized grains to centimeter size takes more than 10^6 yr, or that millimeter sized grains are continuously replenished. In the former case, planet formation is probably difficult, especially in the outer disks. In the latter case, reservoirs of millimeter grains are possibly large (> 10 m) bodies, which can reside in the disk more than 10^6 yr. Constraints on the grain growth time-scale are discussed for the above two cases.

arXiv commentAccepted by ApJ, 17 pages, 15 figures

References in corpus (5)

• Radial Flow of Dust Particles in Accretion Disks
• Size-selective concentration of chondrules and other small particles in protoplanetary nebula turbulence
• Dispersion in the lifetime and accretion rate of T Tauri discs
• Surface Outflow in Optically Thick Dust Disks by the Radiation Pressure
• Indications for grain growth and mass decrease in cold dust disks around Classical T Tauri stars in the MBM 12 young association

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