631 zoekresultaten voor “star formation” in de Publieke website
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Multiple star formation: chemistry, physics and coevality
Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.
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Exo-planets, star and planet formation
Wetenschappers bij de Leidse Sterrewacht onderzoeken de oorsprong van sterren en hun planetenstelsels. Ze detecteren en karakteriseren planeten rondom andere sterren (exoplaneten). Ze onderzoeken hoe sterren en planeten ontstaan. En ze volgen moleculen van interstellaire wolken tot planetenstelsels…
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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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Paving the path between low- and high-mass star formation: dynamics probed by Herschel far-infrared spectroscopy
Promotor: Prof.dr. E.F. van Dishoeck, Prof.dr. F.F.S. van der Tak (RUG)
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From the First Galaxies to the Peak of the Star Formation History
Sobral
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Small scale kinematics of massive star-forming cores
Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: M.R. Hogerheijde
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Unveiling protostellar disk formation around low-mass stars
Promotor: Prof.dr. E.F. van Dishoeck
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Chemistry in embedded disks: setting the stage for planet formation
To address the fundamental questions of how life on Earth emerged and how common life may be in the Universe, it is crucial to know the chemical composition of the planet-forming material.
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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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Galaxy formation traced by heavy element pollution
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.
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Non-equilibrium chemistry and cooling in simulations of galaxy formation
Promotor: J. Schaye
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Molecules during stellar formation and death
Promotor: Prof.dr. E. F. van Dishoeck
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Feedback from deeply embedded low- and high-mass protostars. Surveying hot molecular gas with Herschel
Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: G.J. Herczeg
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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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Uncovering the ingredients for planet formation
This thesis discusses the physical and chemical processes than influence the composition of forming planets.
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Willem Star
Wiskunde en Natuurwetenschappen
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Lijsbertus Star
Universitair Facilitair Bedrijf
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Dynamics of the Oort Cloud and Formation of Interstellar Comets Santiago Torres Rodriguez
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.
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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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Galaxy formation and the structure of the Universe
Promotores: Prof.dr. J. Schaye, Prof.dr. S.D.M. White (MPA Garching)
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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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The astrochemical factory: A solid base for interstellar reactions
In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.
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Star-Forming Galaxies at the Cosmic Dawn
Promotor: Prof.dr. M. Franx, Co-Promotor: Rychard Bouwens
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Early death of massive galaxies in the distant universe
Promotor: M. Franx, Co-Promotor: I.F. Labbé
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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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Metals in the diffuse gas around high-redshift galaxies
Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)
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The puzzle of protoplanetary disk masses
My work focuses on a class of astronomical objects called protoplanetary disks.
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Multiple Star Formation: Chemistry, physics and coevality
Promotie
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Causing a stir: Radiative and mechanical feedback in starburst galaxies
Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf
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Computational modeling of angiogenesis : from matrix invasion to lumen formation
Promotor: Roeland M.H. Merks
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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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Ewine van Dishoeck
Wiskunde en Natuurwetenschappen
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Dancing with the Stars
This thesis develops a method for direction dependent calibration of the ionosphere in radio interferometric data.
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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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Exploring and exploiting the mechanism of mycelial pellet formation by Streptomyces
Promotor: G.P. van Wezel
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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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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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Sizing up protoplanetary disks
This thesis focuses on protoplanetary disks: flattened structures of gas and dust around young stars in which planets are expected to form and grow.
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A molecular journey : tales of sublimating ices from hot cores to comets
The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.
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Protostellar jets and planet-forming disks: Witnessing the formation of Solar System analogues with interferometry
Promotie
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Unraveling the surface formation of regular and deuterated water in space: a combined laboratory and computational study
Promotor: Prof.dr. H.V.J. Linnartz
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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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The Demographics of Protoplanetary Disks: from Lupus to Orion
The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.
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Resolving gas-phase metallicity in galaxies
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.
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When galaxy clusters collide: the impact of merger shocks on cluster gas and galaxy evolution
Promotor: Prof.dr. H.J.A. Rottgering
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From grains to planetesimals: the microphysics of dust coagulation
Promotor: Prof.dr. A.G.G.M. Tielens, Prof.dr. C. Dominik (UvA)
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Modeling interstellar bubbles: near and far
Promotor: Prof. dr. A.G.G.M. Tielens
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Mind the gap: gas and dust in planet-forming disks
Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond
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Studies of dust and gas in the interstellar medium of the Milky Way
Promotor: Prof.dr. A.G.G.M. Tielens