Instrumentation for High-Resolution Stellar UV-Spectrophotometry

Basic UV/Visible Spectrophotometry

UV spectrophotometry for monitoring toxic gases

The need for gas compound measurement concerns overall three domains: environmental monitoring, emission measurement and risk assessment. These fields are different because of concentration range (from 10–3 to thousands mg.m–3). A fast technique has been developed based on UV spectrophotometry. Simple robust optics and absence of interference from water vapour and carbon dioxide are two of the ...

High-Resolution UV Spectroscopy of Molecular Complexes

Information on the structure, the rigidity and the intermolecular potential of molecular complexes is essential to our understanding of the physical and chemical properties of molecular complexes. In this work we would like to demonstrate that rotationally resolved U V spectroscopy provides precise new information on these topics. In particular, the structure and van der Waals bond length of be...

New high resolution synthetic stellar libraries for the Gaia Mission

High resolution synthetic stellar libraries are of fundamental importance for the preparation of the Gaia Mission. We present new sets of spectral stellar libraries covering two spectral ranges: 300 –1100 nm at 0.1 nm resolution, and 840 – 890 nm at 0.001 nm resolution. These libraries span a large range in atmospheric parameters, from super-metalrich to very metal-poor (-5.0 <[Fe/H]<+1.0), fro...

High-throughput, high-resolution Echelle deep-UV Raman spectrometer.

We constructed an ultrahigh-throughput, high-resolution ultraviolet (UV) Raman spectrograph that utilizes a high-efficiency filter-stage monochromator and a high-dispersion Echelle spectrograph. The spectrograph utilizes a total of six mirrors and two gratings, with an overall efficiency at 229 nm of ~18%. The limiting resolution of our spectrometer is 0.6 cm⁻¹ full width half-maximum (FWHM), a...