The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.

Promotor: Prof.dr. M. de Jong, Co-Promotor: A.J. Heijboer

Promotores: Prof.dr. J. Schaye, Prof.dr. S.D.M. White (MPA Garching)

The thesis deals with the study of giant radio galaxies (GRGs), which are radio galaxies of megaparsec sizes.

Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf

This thesis investigates the structural evolution and assembly of galaxies since the first few billions years after the big bang.

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L.B.F.M. Waters (UvA), Prof.dr. C. Dominik (UvA)

The formation of stars and planets happens over multiple scales, which can interact. In particular, planet formation happens in the dense, complex environment of star forming regions.

This thesis is an experimental study of the UV irradiation of the interstellar ice analogues, relevant for the different stages of the star and planet formation sequence.

Water is all around us and is vital for all aspects of life. Studying the various compounds and life forms that inhabit natural waters lets us better understand the world around us.

Hot rocky exoplanets are planets that orbit so close to their host star that they possess a molten surface.

Promotie

Promotie

This Thesis shows discoveries in non-linear astrochemical kinetics as well as a deeper analysis of dark clouds chemistry.

Promotie

Lezing, Harold Linnartz Astrochemistry Prize lecture

De Universiteit Leiden koos al snel na haar oprichting in 1575 voor de Romeinse godin Minerva als beeldmerk. Daarom tonen we Rembrandts Minerva uit 1635 voor het Academiegebouw, dat al sinds 1581 in gebruik is bij de universiteit. Op deze plek, in de Senaatskamer, werden nieuwe studenten ingeschreven.…

Verken de wereld van geesteswetenschappen aan de Universiteit Leiden. Ontdek een breed scala aan studies in talen, culturen, geschiedenis, filosofie en meer. Sluit je aan bij een gemeenschap die de wereld begrijpt en vormgeeft.

Software and AI in Business (S&B) verbindt de domeinen wetenschap, bedrijfsleven en beleid. Wetenschappelijk onderzoek waar we ons in Leiden op richten, bijvoorbeeld op het gebied van kunstmatige intelligentie, belooft onze samenlevingen ten goede te komen. Het vertalen van wetenschap naar positieve…

Het Leiden University Centre for Linguistics (LUCL) is een van de instituten van de Faculteit Geesteswetenschappen.

Promotor: H.J.A. Röttgering, Co-promotor: G.K. Miley

Over the past years it has been discovered that the population of extra-solar planets is large and diverse.

The intracluster medium (ICM) is a hot, tenuous and X-ray emitting gas that pervades galaxy clusters.

The origin and evolution of galaxies are closely linked to many different physical phenomena.

In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.

Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen

Protoplanetary disks are the gas and dust environments where planetary systems form around young stars. Using observations from the Atacama Large Millimeter/submillimeter Array (ALMA) this thesis analyses the gaseous molecular reservoir, using multiple tracers to resolve the 3D structure of protoplanetary…

The largest structures in the Universe are clusters of galaxies. Each can contain hundreds to thousands of galaxies.

In this thesis, I studied the origin and evolution of the non-thermal radiation in merging galaxy clusters.

Promotor: Prof. dr. A.G.G.M. Tielens

Promotor: Prof.dr. S.F. Portegies Zwart

This thesis is largely an experimental study on the formation of solid-state simple and complex organic molecules in the H2O-rich and CO-rich ice phases of dense interstellar clouds and dark cores.

Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.

Promotor: Prof.dr. M. Franx, Co-Promotor: Rychard Bouwens

Promotor: Prof.dr. A.G.G.M. Tielens, Prof.dr. C. Dominik (UvA)

Promotor: Prof.dr. H.V.J. Linnartz

Promotores: Prof.dr. C.U. Keller, Prof.dr. H.C. Gerritsen

In this thesis new methodologies are developed for the detection and systematic study of radio sources in the early universe. This allows us to gain a deeper understanding of the formation and evolution of galaxies, the activity of supermassive black holes, and the final phase transition of our universe:…

Promotor: K.H. Kuijken

This thesis develops a method for direction dependent calibration of the ionosphere in radio interferometric data.

Over geschiedenis van de sterrenkunde van radioastronomie tot exoplaneten, de revolutionaire ontwikkeling van de naoorlogse sterrenkunde.

Radio jets are important to the evoultion of galaxies. However, it is still not fully understood how a radio jet can be triggered.

Wat is er nodig om een mens te maken? Een uitdijend heelal. Gebouwd uit deeltjes, ruimte en tijd, en hun subtiele mechanismen.

Forming at the nodes of the Cosmic Web and growing hierarchically via mass accretion, galaxy clusters are the largest virialized halos in our universe, composed of dark matter (DM; ≥85%), ionized hot plasma in the intracluster medium (ICM; ≥10-15%), and galaxies (≥1-5%).

The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.

In the past decade many population studies have been performed with the Atacama Large Millimeter/submillimeter Array (ALMA) to understand the bulk properties of protoplanetary disks around young stars. These population studies mostly consisted of low mass stars, with relatively few of the disks around…

Promotores: Prof.dr. M. Franx, Prof.dr. M. Kriek (Univ. of California at Berkeley)

Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)

This thesis contributes to studying primordial cosmology theories and their detectability in future observations.

Promotor: Prof.dr. H.L.V. Linnartz