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

(Sub-)millimeter optical constants of silicates and water ice

12 Jun 2018, 14:00
15m
Main Auditorium (Geological Museum, University of Copenhagen)

Main Auditorium

Geological Museum, University of Copenhagen

Øster Voldgade 5 - 7, 1350 København K, Denmark
Board: 39
Poster What is dust? Poster Presentations

Speaker

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

Description

We provide new temperature-dependent optical constants of silicate glasses, silicate minerals, and crystalline and amorphous water ice, in the sub-millimeter spectral range, for silicate glasses up to a wavelength of 4 mm. We compare these optical constants to literature data, such as the ``astronomical silicate'' and commonly used extrapolations of the water-ice opacity. We discuss physical reasons of the strong temperature dependence of the absorptivity seen in the data, and consequences for the contribution of these materials to the sub-millimeter emission of cosmic dust.

Consider for a poster? Yes

Primary authors

Dr Harald Mutschke (Astronomical Institute and University-Observatory Jena) Pierre Mohr Denny Häßner

Co-authors

Dr Frank Lewen (1. Phys. Institut, Universität Köln) Prof. Jürgen Blum (IGEP, TU Braunschweig) Alexey Potapov (Max Planck Institute for Astronomy) Dr Bastian Gundlach (IGEP, TU Braunschweig) Tim Dressler (1. Phys. Institut, Univ. Köln)

Presentation materials