Optical Properties of Iron Silicates in the Infrared to Millimeter as a Function of Temperatures and Wavelength

Autor:	Richey, C. R., Kinzer, R. E., Cataldo, G., Wollack, E. J., Nuth, J. A., Benford, D. J., Silverberg, R. F., Rinehart, S. A.
Rok vydání:	2013
Předmět:	Astrophysics - Astrophysics of Galaxies Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1088/0004-637X/770/1/46
Popis:	The Optical Properties of Astronomical Silicates with Infrared Techniques (OPASI-T) program utilizes multiple instruments to provide spectral data over a wide range of temperature and wavelengths. Experimental methods include Vector Network Analyzer (VNA) and Fourier Transform Spectroscopy (FTS) transmission, and reflection/scattering measurements. From this data, we can determine the optical parameters for the index of refraction, \textit{n}, and the absorption coefficient, \textit{k}. The analysis of the laboratory transmittance data for each sample type is based upon different mathematical models, which are applied to each data set according to their degree of coherence. Presented here are results from iron silicate dust grain analogs, in several sample preparations and at temperatures ranging from 5--300 K, across the infrared and millimeter portion of the spectrum (from 2.5--10,000 \mic\ or 4,000--1 \wvn). Comment: Revised manuscript submitted to ApJ
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1303.4950 Zobrazit plný text záznamu View this record from Arxiv