Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: M.R. Hogerheijde

NASA’s telescope SOFIA has provided a new glimpse of the chemistry in the inner region surrounding massive young stars where future planets could begin to form. Leiden PhD candidate Andrew Barr writes about it in the Astrophysical Journal. The scientists found massive quantities of water and organic…

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.

The origin and evolution of galaxies are closely tied to the cyclic feedback processes between stars and the interstellar medium (ISM).

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.

Promotores: Prof.dr. A.G.G.M. Tielens & Prof.dr. L. Kaper (UvA)

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

In 2018, Leiden astrophysicist Ewine van Dishoeck won the Kavli Prize in Astrophysics. At the Faculty's New Year's Reception 2019, she announced that she would start a new award for young science talents, financed by her prize money: the Young Star Award.

Within this project, PeptoMiktoStars were realized through an orthogonal protecting group strategy and should be investigated further regarding their potential as drug delivery systems in the field of drug delivery to inflamed areas in cancer, bacterial infections or autoimmune diseases.

Promotor: J. N. Kok, Co-promotor: A. J. Knobbe

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

Perform cutting-edge research in the area of the STAR mathematics cluster.

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.

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

In the large gas clouds between the stars, chemical reactions take place under extreme conditions, giving rise to both small molecules, such as water and common salt, as well as large complex molecules that can serve as the building blocks of life. This is known as astrochemistry and it is something…

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.

We have conducted a full spectral line survey of the 3-13 micron region of two massive protostars, AFGL 2591 and AFGL 2136, for the first time at high spectral resolution.

One of the key quests in astronomy is to study the growth and evolution of galaxies across cosmic time. Radio observations provide a powerful means of studying the formation of stars and subsequent buildup of distant galaxies, in a way that is unbiased by the presence of dust.

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.…

Promotor: F.P. Israel, Co-Promoter: R. Meijerink

Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven

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…

It is well known that photography means writing with light. However, the meaning of “with” can be ambiguous. Film can be exposed outside of the camera. Historically, people have done so to render visible other forms of radiation than what we call light. In mid-2013, Andrew Littlejohn took several rolls…

Promotor: Prof.dr. E.F. van Dishoeck, Co-promotor: S. Bruderer

Circumstellar discs are the reservoirs of gas and dust that surround young stars and have the potential to become planetary systems.

In a century replete with radical politics, final liberations, historical codas, and dreams of eternity, the shadowy figure of Louis-Auguste Blanqui, the constant revolutionary, wrote Eternity by the Stars in the last months of 1871 while incarcerated in Fort du Taureau, a marine cell of the English…

Stellar feedback is a crucial ingredient in the evolution of galaxies.

What is the origin of solar systems?

Why do some children confront social challenges with confidence, whereas others experience difficulties? What is the role of child temperament and child emotional dispositions? What is the role of parenting? This project aims to shed light on the mechanisms explaining shyness and confidence in response…

Rossi

Show People offers a comprehensive history of the film star from Mary Pickford to Andy Serkis, traversing more than one hundred years and drawing on examples from America, Britain, Europe, Asia and elsewhere.

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

How did galaxies form? How did galaxies evolve?

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

Leiden University has participated in an international study carried out by the CARMENES consortium, which has discovered two small, terrestrial planets around Teegarden’s Star. The planets have masses similar to Earth and their temperatures could be mild enough to sustain liquid water on their surf…

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

Promotor: Prof.dr. E.F. van Dishoeck, Prof.dr. F.F.S. van der Tak (RUG)

Over the past decade, several novel types of spatially resolved

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

Astronomers from Leiden University have discovered that the star wind from a newborn star in the Orion Nebula prevents more stars from forming in the immediate vicinity. They made the discovery with data from the SOFIA observatory. This was announced by co-author Xander Tielens during a press conference…

The development of literary celebrity by focusing on five famous Dutch authors from the nineteenth century

New ALMA observations show there is ordinary table salt in a not-so-ordinary location: 1,500 light-years from Earth in the disk surrounding a massive young star. Though salts have been found in the atmospheres of old, dying stars, this is the first time they have been seen around young stars in stellar…

Promotor: Prof.dr. A.G.G.M. Tielens, Co-Promotor: J.B.R. Oonk

In which way was literary celebrity constructed in the nineteenth century and what forms of fandom were there?

What is neutron star matter?

On Friday evening 17 September, Leiden astronomer Joe Callingham can be seen in a new series on Discovery channel. Killers of the Cosmos is about different deadly dangers lurking in the depths of space. Asteroids, cosmic debris, electromagnetic weapons… The show takes a film-noir approach to these threats,…