Promotor: Prof.dr. I.A.G. Snellen, C.U. Keller

Over the last three decades, the discovery of exoplanets has revealed the boundless variety of worlds beyond our own Solar System⁠. Majority of planetary systems contain short-period planets that are larger than Earth but smaller than Neptune⁠.

More than 5,000 exoplanets have been found over the past couple of decades. These exoplanets show a tremendous diversity, ranging from scorching hot Jupiters, common super-Earths, to widely separated super-Jupiters on the planet/brown dwarf boundary.

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

One of the key discoveries in exoplanet research over the past decade is the abundance of small planets in our Milky Way. Despite their high numbers, our understanding of their atmospheres remains limited, and it is unknown if they possess atmospheres at all.

The James Webb Space Telescope has found evidence of carbon dioxide (CO₂) in the atmosphere of a giant planet 700 light years away. This result provides insight into the composition and formation of this gas giant and shows what James Webb is capable of. The research by the international group of astronomers,…

In the past 30 years, over 5,000 planets have been discovered outside our solar system. One common exoplanet is the lava world, a hot super-Earth with oceans of liquid lava. Mantas Zilinskas developed models to simulate possible atmospheres of these. Those simulations provide guidance for astronomers…

Advancing AutoML systems targeting machine learning tasks based on Earth Observation (EO) Datasets.

This thesis describes the implementation and on-sky demonstration of high-resolution integral-field spectroscopy for extreme adaptive optics systems that are used to find and characterize exoplanets.

An international team of astronomers have become the first in the world to detect isotopes in the atmosphere of an exoplanet. It concerns different forms of carbon in the gaseous giant planet TYC 8998-760-1 b. The research will be published in the scientific journal Nature on Thursday.

Promotor: Prof.dr. C.U. Keller, Co-promotor: Dr. ir. Frans Snik

Promotor: I. A. G. Snellen, Co-promotor: M. A. Kenworthy

In our globalised economy, goods and services are frequently produced abroad. Is it the producer or the consumer that should be held responsible for greenhouse gas emissions associated with production? Together with colleagues from Berlin, Hauke Ward of the Institute of Environmental Sciences (CML)…

From a lovely blossoming garden in Barcelona, Eduard Fosch Villaronga is talking enthusiastically about his postdoc at Leiden University. Due to the corona lockdown, he is currently spending the 2020 summer at his mother’s place, but he is looking forward to returning to Leiden (and to the Dutch bit…

Diverse types of exoplanets such as gas giants on close-in orbits (hot Jupiters) and young massive giants on wide orbits (super Jupiters), with no analogs in the Solar System, pose challenges but also opportunities to our understanding of planet formation and evolution.

A radical reduction in the amount of meat, dairy and other products sourced from animals is possible in the coming decades, as people turn to an increasing variety of alternatives. This would unlock vast amounts of land that we could use to produce energy and remove carbon from the atmosphere. Leiden…

So many interesting programmes, but which one suits me best? It was the Bachelor’s Open Day in Leiden and The Hague on Saturday 12 October. Among the many things to do in The Hague, prospective students could find out more about three new bachelor’s programmes: Science for Sustainable Societies, Cybersecurity…

This thesis investigates the evolution and fate of gaseous exoplanets, which are continuously shaped by stellar activity across both short and long timescales.

This thesis focus on the interaction between M dwarf stellar winds and Galactic cosmic rays and the possible effects on the habitability of exoplanets.

This thesis addresses the chemical processes that determine the compositions of giant planet atmospheres.

In what ways can a photographic practice act as a means to confront, or even undo, the various material properties of atmospheric enclosure that so clearly put our relationship with our environment under pressure? Is it possible to devise a set of critical and artistic strategies to comprehend the ways…

This thesis is about the study of hydrocarbons via infrared spectroscopy.

To study how planetary systems come into existence we study much younger systems still in formation.

These are the proposed research projects for LEAPS 2019. Please note that not all projects will go ahead and some may still be added in the near future. Final funding decisions lie with the Faculty sponsors. And please make a note that if you are interested in an ESA project, to check if your state…

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

Leiden University began the construction of a new University Sports Centre in collaboration with the construction and design firm Binx Smartility. The current sports center no longer meets sustainability requirements and is also becoming too cramped. The building will also serve as an examination ce…

Most degree programmes at the Faculty of Social and Behavioural Sciences are based in the Pieter de la Court building on the Wassenaarseweg in Leiden. Besides this location, some degree programmes are based in The Hague, at Campus The Hague’s Wijnhaven building.

Within the two-year Astronomy master’s programme, you can choose from seven specialisations, ranging from fundamental or applied astronomy research in cosmology, instrumentation or data science, to combinations of astronomy research with education, management or science communication.

Research at the Leiden Institute of Physics (LION) is foundational and curiosity driven. All our scientists share a desire to increase the knowledge of the world around us, in an open atmosphere of inquiry from which innovative ideas emerge that provide applications and value for society.

Evert Jan van Leeuwen’s entry in Auteur Press’s Devil's Advocate series provides a complete study of the aesthetic appeal of Roger Corman's influential first Poe picture House of Usher.

In this work the reconstruction of a tau neutrino signal in the KM3NeT detector is discussed.

Study information, Student-for-a-day

LIACS is committed to inclusive work and study experiences, respectful of all students and staff, and free of discrimination, harassment, bullying, or retaliation. An inclusive and respectful atmosphere is vital to free expression and the open exchange of ideas.

MSc Law and Society brings together students from law and social sciences to examine the dynamic relationship between legal norms and social reality. Its global orientation, interdisciplinary approach, and focus on social justice make this master’s programme unique in its field.

The Keuzegids is an independent consumer guide that compares all (master’s) programmes in the Netherlands. Students evaluate the programmes based on content, atmosphere, lecturers, assessment, and career preparation.

European Law is a one-year Master’s specialisation at the internationally renowned Leiden Law School at Leiden University. The programme distinguishes itself by its broad intra-disciplinary approach, covering institutional, constitutional as well as internal market and competition law of the EU in addition…

Promotor: W. Jiskoot, Co-promotor: H.A. Every

The Institute of Cultural Anthropology and Development Sociology (co)organises various events during the year.

This dissertation is an experimental study of laser-generated, atmospheric pressure, transient toroidal helium plasmas.

The Young Alumni Network is specifically for young alumni (35 years and younger) living in the Netherlands, who have recently graduated and are at the start of their career. As a young alumnus you have different needs than when you are settled in your career path or when your career is drawing to a…

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

This research focuses on the distribution of chemical elements in protoplanetary disks, the birthplaces of planets. These disks form around young stars and contain gas and dust, from which planets grow. Ice plays a crucial role in planet formation, aiding the clumping of dust particles and influencing…

On the 23d of May, Sanne Rotmeijer successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Sanne on this achievement!

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.

Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.

Are you interested in an interactive Master’s programme that prepares you for important roles in the innovations of our future healthcare? The Health, Ageing and Society Master’s focuses on biological, individual and social aspects of healthy ageing, as well as emphasizing on personal and professional…

In Indigenous Ancestors and Healing Landscapes Jana Pešoutová presents new interpretations of current healing practices in Cuba and the Dominican Republic juxtaposed against the European colonization of the Caribbean after 1492.