Dust evolution in pre-stellar cores

Abstract

Dust grains are the building {blocks} of future planets. They evolve in size, shape and composition during the life cycle of the interstellar medium. We seek to understand the process which leads from diffuse medium grains to dust grains in the vicinity of protostars inside disks. As a first step, we propose to characterize the dust evolution inside pre-stellar cores thanks to multi-wavelength observations. We will present how NIKA2 maps are crucial to better constrain dust properties and {we will} introduce SIGMA: a new flexible dust model in open access.

arXiv comment6 pages, 5 figures, to appear in the proceedings of the international conference entitled mm Universe @ NIKA2, Grenoble (France), June 2019, EPJ Web of conferences

References in corpus (16)

• A Large Catalog of Accurate Distances to Local Molecular Clouds: The Gaia DR2 Edition
• The Ubiquity of Micrometer-Sized Dust Grains in the Dense Interstellar Medium
• Depletion and low gas temperature in the L183 prestellar core : the N2H+ - N2D+ tool
• Multiwavelength optical properties of compact dust aggregates in protoplanetary disks
• Observational Constraints on the Ages of Molecular Clouds and the Star-Formation Timescale: Ambipolar-Diffusion--Controlled or Turbulence-Induced Star Formation?
• Galactic cold cores VI. Dust opacity spectral index
• Low temperature MIR to submillimeter mass absorption coefficient of interstellar dust analogues I: Mg-rich glassy silicates
• Galactic cold cores V. Dust opacity
• The 9.7 and 18 um silicate absorption profiles towards diffuse and molecular cloud lines-of-sight
• Spatial segregation of dust grains in transition disks. SPHERE observations of 2MASS J16083070-3828268 and RXJ1852.3-3700
• Dust properties inside molecular clouds from coreshine modeling and observations
• Condition for the formation of micron-sized dust grains in dense molecular cloud cores
• Low-temperature MIR to submillimeter mass absorption coefficient of interstellar dust analogues II: Mg and Fe-rich amorphous silicates
• Can we trace very cold dust from its emission alone ?
• On the importance of scattering at 8 microns: Brighter than you think
• Deuterium fractionation and H2D+ evolution in turbulent and magnetized cloud cores

Cited by in corpus (4)

• Grain alignment and disruption by radiative torques in dense molecular clouds and implication for polarization holes
• Evolution of dust porosity through coagulation and shattering in the interstellar medium
• A low cosmic-ray ionisation rate in the prestellar core Ophiuchus/H-MM1. Mapping of the molecular ions ortho-H2D+, N2H+, and DCO+
• Effect of dust rotational disruption by radiative torques on radiation pressure feedback from massive protostars