1240 search results for “stellar content” in the Public website
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Dawn of the red and dead: stellar kinematics of massive quiescent galaxies out to z = 2
Promotores: Prof.dr. M. Franx, Prof.dr. M. Kriek (Univ. of California at Berkeley)
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Stellar radio beacons for Galactic astrometry
A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.
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Early stellar galaxies
Franx
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Clues from stellar catastrophes
Promotores: S.F. Portegies Zwart, E. M. Rossi
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Structure and substructure in the stellar halo of the Milky Way
Promotor: K.H. Kuijken
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Monsters in the Deep: Using simulations to understand the excess baryonic mass in the centres of high-mass, early-type galaxies
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…
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The distribution of stellar mass in galaxy clusters over cosmic time
Promotor: Prof.dr. K.H. Kuijken, Co-Promotor: Dr. H.Hoekstra
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Resolving the building blocks of galaxies in space and time
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.
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Molecules during stellar formation and death
Promotor: Prof.dr. E. F. van Dishoeck, Co-promotor: A. N. Heays
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Beyond Content
In 2018, the European Year of Cultural Heritage, Leiden University Libraries focuses on the materiality of text and image with its activity programme titled ‘Beyond Content’. The programme pays attention to the forms in which historical texts and images have come down to us, and also to the new technologies…
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High-content imaging platform
This page is under construction.
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Discover More HyperVelocity Stars to shed light on the Galaxy
Rossi
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Simon Portegies Zwart
Science
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Examining science teachers' pedagogical content knowledge in the context of a professional development program
This dissertation reports on the pedagogical content knowledge (PCK) of science teachers during a professional development program. This research intended to help us understand why and how teachers make their classroom decisions as they teach science.
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What’s CLIL about bilingual education? A window on Content and Language Integrated Learning pedagogies
In the Netherlands approximately 130 out of 700 secondary schools offer a bilingual stream. However, research about CLIL (Content and Language Integrated Learning) is limited. With her dissertation Evelyn van Kampen (PhD student at ICLON) wants to contribute to the understanding of the nature and range…
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of automatic image analysis methods for high-throughput and high-content screening
Promotor: B. van de Water, Co-Promotores: J.H.N. Meerman, F.J. Verbeek
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ALMA Reveals Inner Web of Stellar Nursery
Recent study led at the Leiden Observatory has observed Orion with unprecedented detail. New data from the Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes have been used to create this stunning image showing a web of filaments in the Orion Nebula. These features appear red-hot…
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Tales of Orion: the interplay of gas, dust, and stars in the interstellar medium
Promotores: Prof.dr. A.G.G.M. Tielens & Prof.dr. L. Kaper (UvA)
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The interplay between stars, gas and dust in faint star-forming galaxies
When observing star-forming galaxies, we are not only seeing stellar light, but we also see how this interacts with galactic gas and dust. This thesis contains studies of the stellar, nebular and dust properties of low mass star-forming galaxies.
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Clues from Stellar Catastrophes
PhD Defence
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Surveying young stars with Gaia: Orion and the Solar neighbourhood
OB associations are loose groups of young, massive stars. They constitute the last stage of the massive starformation process, and the context in which new stars are formed.
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Diagnostics for mechanical heating in star-forming galaxies
Promotor: F.P. Israel, Co-Promoter: R. Meijerink
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Chaotic dynamics in N-body systems
Promotor: Prof.dr. S.F. Portegies Zwart, Co-promotor: D.C. Heggie
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Galaxies and the structures in which they are embedded
Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…
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Galaxies and the structures in which they are embedded
Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…
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The assembly history of the milky way nuclear star cluster
Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven
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Hunting for the fastest stars in the Milky Way
The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.
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Dynamics and radiation from tidal disruption events
When a star gets too close to a supermassive black hole, it is torn apart by strong tidal forces in a tidal disruption event (TDE).
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The Great Collapse
Promotor: Prof.dr. S.F. Portegies Zwart
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Identifying the origins of galaxy formation
This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.
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Stellar radio beacons for Galactic astrometry
PhD Defence
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'Attempts of tech companies to combat harmful content are unconvincing'
Online content can be harmful to democracy and the self-regulation approach is no longer adequate, claims Professor Tineke Cleiren in an opinion piece in Dutch newspaper de Volkskrant.
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Content key factor in choosing a master’s programme
Last Friday was Master’s Open Day time once again. Students from home and abroad descended on Leiden and The Hague to find out more about our master’s programmes. Alongside the presentations, the information fairs gave them a good opportunity to ask any questions.
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Conceptualising and developing the practice of CLIL teachers
How do teachers conceptualise, develop and implement an effective CLIL practice?
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Systems microscopy to unravel cellular stress response signalling in drug induced liver injury
Promotor: B. van de Water
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Repair a bad kidney or make a new one to order
Searching for ways to delay the need for a transplant and trying to build kidneys to order.
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Star formation and aging at cosmic noon: the spectral evolution of galaxies from z=2
Promotores: Prof.dr. M. Franx & Prof.dr. P.G. van Dokkum (Yale University)
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Exo-planets, star and planet formation
At Leiden Observatory, researchers investigate the origin of stars and their planetary systems. They detect and characterize planets around other stars, which are called exo-planets. They study how stars and planets form. And they follow molecules from interstellar clouds to nascent planet systems.…
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High-Contrast Imaging of Protoplanetary Disks
To study how planetary systems come into existence we study much younger systems still in formation.
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Tracing the journey of the sun and the solar siblings through the Milky Way
Supervisor: S.F. Portegies Zwart Co-Supervisor: A.G.A. Brown
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Casting light on the ƞ Carinae puzzle
Promotor: Prof.dr. V. Icke, Co-Promotor: T.I. Madura
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Graduate School of Science
The Graduate School of Science has a centuries-old tradition in cutting edge education and research in science.
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Inferno Worlds
A remarkable population of short period transiting rocky exoplanets with equilibrium temperatures on the order of 2,000 K has recently been discovered.
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From supernovae to galaxy clusters: observing the chemical enrichment in the hot intra-cluster medium
Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa
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Exo-planets, star and planet formation
At Leiden Observatory, researchers investigate the origin of stars and their planetary systems. They detect and characterize planets around other stars (exoplanets). They study how stars and planets form. And they follow molecules from interstellar clouds to nascent planet systems. This way they address…
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Motivating and Motivation in Bilingual Education
What motivates learners in bilingual education to learn English and how can and do teaching practices contribute to that motivation?
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The formation of complex organic molecules in dense clouds-Sweet results from laboratory
Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.
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X-ray spectroscopy of interstellar dust: from the laboratory to the Galaxy
In this thesis, we present new laboratory data of interstellar dust analogues.
- Leiden Observatory
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Early death of massive galaxies in the distant universe
Promotor: M. Franx, Co-Promotor: I.F. Labbé