Promotor: Prof.dr. H.J.A. Rottgering

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.

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

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

Promotor: Prof.dr. K.H. Kuijken, Co-Promotor: H.Hoekstra

This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.

This thesis focuses on the X-ray spectral analysis of merging galaxy clusters and the plasma code development for future high-resolution X-ray spectroscopy observations.

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)

Promotor: J. Schaye

Promotor: M. Franx, Co-Promotor: I.F. Labbé

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

In this thesis, the research focuses on the properties of dark matter and dark matter haloes and how they connect with the galaxies we can observe in the Universe.

This thesis presents pioneering work on the panchromatic emission of some of the most luminous galaxies in the early Universe: star forming galaxies and active galactic nuclei.

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

In this thesis, I study the formation of large-scale structure and the physics of particle acceleration at large scales (~Mpc).

The formation and evolution of galaxies is fundamentally driven by the formation of new stars out of cold gas.

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

Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.

The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

Sustainable energy from wind and solar is most readily available near the sea.

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

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

Promotor: Prof.dr. M. Schilthuizen

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

To gain more insight into the evolutionary development of orchid flowers and fruits, the orchid species Erycina pusilla was studied. The evolutionary origin of the median petaloid sepal, the callus on the labellum, and the stelidia was studied.

In this thesis, we present new laboratory data of interstellar dust analogues.

This thesis aims to enhance our understanding of galaxies by testing theoretical models of galaxy formation against observations, particularly in the cases of extreme systems which have been found to have an excess of baryonic mass in their central regions, in the form of either supermassive black holes…

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

Drie projecten met Leidse onderzoekers ontvangen van NWO een subsidie voor de bouw of vernieuwing van grootschalige onderzoeksfaciliteiten. Zij gaan werken aan elektronenmicroscopie, een X-omics initiatief en een röntgentelescoop. De projecten maken deel uit van de Nationale Roadmap voor Grootschalige…

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

Planets are formed in disks of gas and dust around young stars.

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

Promotor: Prof.dr. E.F. Smets

Promotor: K.H. Kuijken

Promotor: K. Kuijken, Co-Promotor: H. Hoekstra

The solar system was formed approximately 4.56 billion years ago. Despite the numerous theories that have been developed over the years, the formation and evolution of the solar system still remain unclear.

Supervisor: S.F. Portegies Zwart Co-Supervisor: A.G.A. Brown

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

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

This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.

We investigate the buildup of galaxies from various vantage points. The first two chapters focus on the stellar content of galaxies, especially the distribution of stellar masses at birth and potential variations therein in various galactic environments.

Promotor: Prof.dr. S. Portegies Zwart

Promotor: E. Gittenberger, Co-promotores: L.P. van Ofwegen; B.W. Hoeksema

The logic seems inescapable indeed. The bigger the population, the higher the probability it contains an Einstein. Hence, bigger populations are more likely to develop complex culture.