I am a Professor at the Kapteyn
Institute at the University of Groningen, From 2011
until 2016 I have been its (Scientific) Director. From 2017
until 2020 I was the education director of the Master
Astronomy. I study the formation and evolution of galaxies, by
studying their structure, kinematics and stellar populations.
At the moment, I my research is mostly focused on studying
dwarf galaxies in the nearby Universe, but I am also very
interested in working on new techniques to better study the
The Kapteyn Institute is one of the appr. 10 research
institutes of the Faculty of Mathematics and Natural Sciences
(FMNS, FWN) at the University of Groningen. Its mission is to
do research in astronomy, and to be responsible for the
astronomy teaching at the University. Together with Leiden we
are the only University in the Netherlands offering a bachelor
in astronomy. We also offer a master program in astronomy. We
have a large PhD programme with more than 50 PhD students. The
Kapteyn Institute is one of the 4 partners in NOVA, the
Netherlands Research School for Astronomy.
July 2021: Our paper on
Ultra Compact Dwarfs in the Fornax Cluster was published by
MNRAS. This paper is led by my PhD student
July 2021: Our paper simulating the
formation of the dwarf irregular NGC 1427A in the Fornax
Cluster appeared in MNRAS. The main author of this paper is Michele
Mastropietro, a SUNDIAL PhD student at the University of Gent.
May 2021: The website of the programme 'Donkerte
van de Wadden' is on-line! This is a programme to create
awareness for darkness in the North of the Netherlands.
May 2021: A paper on the origin of
spiral features in dwarf elliptical galaxies was published. This is led by Rory Smith (KASI, Korea)
and Josefina Michea, a PhD Student in Heidelberg, and shows
that dwarfs falling into a cluster can start developing spiral
structure, induced by the interaction with the Intra Cluster
May 2021: A paper, led by my colleague Ariane
Lancon (Strasbourg) came out on the XSL spectra, and the
stellar parameters of the XSL stars. We are getting there! The
second data release of XSL has just been published, and the
third and final release, with the stellar population models,
are expected for later in 2021.
April 2021: The paper by my PhD student
Teymoor Saifollahi on a recount of the number of Globular
Clusters in the UDG (Ultra Diffuse Galaxy) DF44 is out in MNRAS. This means that the
dark halo mass of this galaxy is much smaller than previously
claimed, and that UDGs are most likely just the tail of the
large dwarf galaxies. Press releases appeared in astronomie.nl,
Groningen University, and in many placed (e.g. youtube,
Alert). A popular version appeared in the
January issue of Zenit.See also it's translation into English.
April 2021: Three papers on gas (HI and
CO) in the Fornax Cluster in which I am involved. A paper by
Kleiner et al. (A&A) on HI gas in the Fornax
A group and pre-processing, using the new MeerKAT
telescope in South Africa. A paper by Loni et al. on a
shallower ATCA HI survey of the whole Fornax Cluster (A&A),
and a paper by Zabel et al. (MNRAS)
on CO and very low dust to gas ratios in the Fornax Cluster.
March 2021: A paper on detailed
morphological analysis of all dwarf galaxies in the Fornax
Cluster was published by Alan Su,SUNDIAL PhD student at the
University of Oulu in A&A.A
detailed comparison is made between inner and outer parts of
the cluster, and the Fornax A group.
January 2021: A
paper is published in A&A comparing the source
detection code MTO (Teeninga et al. 2016) with other codes,
such as SExtractor, which are popular in the literature. The
main author, Caroline Haigh, is a SUNDIAL student working on a
PhD in galaxy detection methods.