IAU Focus Meeting FM10:
Nano Dust in Space and Astrophysics

August 28 – 29, 2018

Scientific Rationale:


Nano dust particles with sizes roughly 1 to 100 nm are intermediate between molecules and bulk materials. Their properties are often peculiar, being qualitatively different from those of bulk materials. Clusters of nano particles reveal strongly variable, size-dependent properties such as geometric and electronic structure, binding energy and dielectric function, which determine their interaction with surrounding gas and electromagnetic radiation. Interstellar nano dust dominates the far ultraviolet extinction as well as the near- and mid-infrared emission of the interstellar medium of the Milky Way and external galaxies. Nanometre-sized or smaller polycyclic aromatic hydrocarbons (PAHs), C60, and diamonds are observed in astrophysical regions through their characteristic vibrational spectral features. The presence of nano dust leads to the heating of the surrounding plasma and dusty plasma effects, like waves and instabilities. For many years nano dust has been detected with in-situ instruments from spacecraft in different regions of the solar system. In the Earth’s upper atmosphere it forms from the re-condensation of metallic compounds produced from ablating meteoroids. This re-condensed dust is implicated in the formation and chemistry of clouds, also in the atmospheres of e.g. Mars, Venus and Titan. Nano dust is also observed in comets. Volcanic plumes and impacts on planetary objects are sources of nano dust in the vicinity of planets and small solar system objects, e.g. near the Moon. This Focus Meeting brings together researchers from astronomy, space and astrophysics to combine knowledge of nano dust under a wide range of conditions and to progress our understanding.

Topics:

  • Nano dust formation and evolution from laboratory experiments
  • Nano dust destruction and observations in the interstellar medium
  • Nano dust in stellar atmospheres and winds
  • Nano dust in solar wind and planetary debris disks
  • Nano dust in the vicinity of solar system objects
  • Meteors and the link to nano dust in the Earth’s atmosphere
  • Nano dust in cosmic dusty plasma
  • Nano dust and dusty plasma interactions near planetary surfaces and in magnetospheres
  • Physical and chemical interactions of nano dust in space and planetary atmospheres
  • Physics and astrophysics of nano carbon materials (PAHs, fullerenes, nanotubes,etc.)

 

 

Programme:

Tuesday, 28. Aug.

Session 1
room: N
10:30 - Mann, Ingrid (Nano Dust in Space and Astrophysics)
10:45 - Jiang, Biwei (Nano Dust and the Far-Ultraviolet Interstellar Extinction)
11:15 - Onaka, Takahsi (Processing of Nano Dust Particles in Galaxies)
11:30 - Zhukovska, Svitlana (Iron Dust Growth in the Galactic Interstellar Medium: Clues from Element Depletions)
11:45 - Mattsson, Lars (Small-Scale Clustering of Nano Dust Grains in Turbulence)



Session 2
room: N
13:30 - Kimura, Yuki (Low-Temperature Formation of Silicate and Oxide)
14:00 - Stefan Bromley (Formation, Processing and Properties of Nano-Silicate Dust: A Bottom-up Computional Modelling Approach)
14:15 - Jäger, Cornelia (Experiments on Formation of Carbon Nano Dust)
14:45 - Tanaka, Kyoko K. (Dust Formation from Vapor through Multistep Nucleation in the Astrophysical Environments)



Session 3
room: N
15:30 - Cami, Jan (C60 in Interstellar and Circumstellar Environments)
16:00 - Manchado, Arturo (Spatial Distribution of the Fullerene C60 in the Planetary Nebula IC 418)
16:15 - Monreal Ibero, Ana (Spatially Resolved Studies of Diffuse Interstellar Bands in Galaxies outside of the Local Group)
16:30 - Murga, Maria (Orion Bar as a Window to Evolution of Small Carbonaceous Grains)
16:45 - Szczerba, Ryszard (The 30 Micron Sources in Galaxies with Different Metallicities)




Wednesday, 29. Aug.

Session 4
room: N
10:30 - iglesias groth, susana (Physics and Astrophysics of Carbon Buckyonions)
11:00 - Kwok, Sun (Mixed Aromatic Aliphatic Organic Nanoparticles (MAON) as Carriers of the Unidentified Infrared Emission Bands)
11:15 - Li, Aigen (Graphene and Carbon Nanotubes in Space)
11:30 - Nanni, Ambra (Constraining Dust Properties in Circumstellar Envelopes of Carbon Stars in the Magellanic Clouds: Optical Constants and Grain Size of Carbon Dust)
11:45 - Gobrecht, David (The role of alumina in triggering stellar outflows)



Session 5
room: N
13:30 - Höfner, Susanne (Nano Dust in Stellar Atmospheres and Winds)
14:00 - Su, Kate (Nano Dust as a Possible Cause of Hot Emission in Planetary Debris Disks)
14:30 - Mann, Ingrid (Formation and Interaction of Nano Dust in Planetary Debris Disks)
14:45 - Seok, Ji Yeon (Polycyclic Aromatic Hydrocarbons in Protoplanetary Disks)



Session 6
room: N
15:30 - Plane, John (Heterogeneous Chemistry on Nano Dust in the Terrestrial and Planetary Atmospheres (including Titan))
16:00 - Andersson, Laila (Dust Cloud at Mars)
16:15 - Popel, Sergey (Dusty plasma interactions near the Moon and in the system of Mars)
16:45 - Lebreuilly, Ugo (Dust dynamics in adaptative-mesh-refinement codes: application to protostellar collapses)

 

SOC:

  • Ingrid Mann, Tromsø, Norway, Co-Chair
  • Aigen Li, Columbia, USA, Co-Chair
  • Kyoko Tanaka, Sapporo, Japan, Co-chair
  • Anja C. Andersen, Copenhagen, Denmark
  • Khare Avinash, Delhi, India
  • Biwei Jiang, Beijing, China
  • Sun Kwok, Hongkong, China
  • Anny-Chantal Levasseur-Regourd, Paris, France
  • Veronica Motta, Valparaíso, Chile
  • Joseph A. Nuth, Greenbelt, USA
  • Thomas Pino, Orsay, France
  • John Plane, Leeds, United Kingdom
  • Farid Salama, Moffett Field, USA
  • Alexander Tielens, Leiden, The Netherlands
  • Chris Wright, Canberra, Australia

 

Contact:

Ingrid Mann 
ingrid.b.mann@uit.no 

XXX IAU General Assembly | ACV - Austria Center Vienna  | Bruno-Kreisky-Platz 1  | 1220 Vienna