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11–15 Jun 2018
Geological Museum, University of Copenhagen
Europe/Copenhagen timezone

Temperature-Dependent Laboratory Measurements of the Far-Infrared to Millimeter Opacity of Carbonaceous Dust-Analogues

11 Jun 2018, 10:35
15m
Main Auditorium (Geological Museum, University of Copenhagen)

Main Auditorium

Geological Museum, University of Copenhagen

Øster Voldgade 5 - 7, 1350 København K, Denmark
Board: 36
Poster What is dust? Poster Presentations

Speaker

Jonas Greif (Astrophysical Institute and University-Observatory Jena)

Description

We are measuring and analysing the FIR- and THz- Spectra of pyrolysed micro-crystalline cellulose as an analogue of carbonaceous interstellar dust. We are using cellulose-powder with crystal sizes of about 20\,$\mu$m and are heating it up to 1000$^{\circ}$C. First results of the mass normalised extinction are presented and compared to J\"ager et al. (1998). The temperature dependent measurements took place in a dry environment at room temperature (RT) down to the environmental temperature of $T_{\text{env}}=$ 10\,K. \

Our aim is to assess carbonaceous dust analogues in terms of structure, nature and morphology. For theoretical and observational investigation we are going to determine their optical constants. Furthermore, we are going to calculate the emission cross section of particles with different geometries to compare them with the measured results.

Consider for a poster? Yes

Primary author

Jonas Greif (Astrophysical Institute and University-Observatory Jena)

Co-author

Dr Harald Mutschke (Astronomical Institute and University-Observatory Jena)

Presentation materials