PhD ceremony: Ms. N. Wehres, 16.15 uur, Academiegebouw, Broerstraat 5, Groningen
Title: Optical spectroscopy of interstellar and circumstellar molecules. A combined laboratory and observational study.
Promotor(s): prof. A.G.G.M. Tielens, prof. H.V.J. Linnartz
Faculty: Mathematics and Natural Sciences
This thesis describes the identification of inter- and circumstellar molecules by combining laboratory and observational data. The focus is on transient, i.e. radical species.
State-of-the-art spectroscopic techniques, such as time-gated fluorescence and cavity ring-down spectroscopy, are used to search for spectral signatures of carbon chain radicals, like C9H3 and HC7H, in a supersonically expanding plasma. These species have been proposed as potential carriers of diffuse interstellar bands. In addition, the fluorescence spectra are compared with emission spectra of the Red Rectangle proto-planetary nebula that have been recorded for different spatial off-sets with the ESO New Technology Telescope. The assignment of astronomical data, using the laboratory results, provides snapshots of the ongoing chemical evolution in space.
The majority of the data have been recorded in the Sackler Laboratory for Astrophysics (Leiden Observatory) and the Laser Center VU.
Today, the deans of technology of the four technological universities (4TU) and the University of Groningen have submitted an Integral Sector Plan for Technology to the Ministry of Education, Culture, and Science. The plan’s ambition is to...
Erik Heeres is no ordinary scientist. Born in Pekela, the researcher evolved from teenager dabbling with a chemistry set to successful project leader of large Dutch and European research consortia. To this day, the Professor of Chemical Engineering...
Carmem M. Gilardoni wins the Ehrenfest-Afanassjewa thesis prize 2022
The UG website uses functional and anonymous analytics cookies. Please answer the question of whether or not you want to accept other cookies (such as tracking cookies).
If no choice is made, only basic cookies will be stored. More information