Welcome to the homepage of Martin Groenewegen.
As of February 1st, 2008 I hold a permanent position
at the Koninklijke Sterrenwacht van België (Royal Observatory of Belgium, ROB) in Brussels, and since September 2018 I am the head of the Astronomy and Astrophysics group, one of the four departments of the ROB.
Between 1 Oct. 2001 and 31 Jan. 2008 I worked for the Herschel-PACS ICC (Instrument Control Centre) at
the Instituut voor Sterrenkunde (IvS) of the KU Leuven.
Between 1 Oct. 2000 and 30 Sep. 2001 I was an associate in the
ESO Imaging Survey (EIS)-team.
Before that (1 Oct. 1995 to 30 Sep. 2000) I held a post-doc position at the
(Max-Planck-Institut für Astrophysik) in Garching.
Between 1 Nov. 1993 and 30 Sep. 1995, I was a post-doc at the
(Institut d'Astrophysique de Paris).
I obtained my PhD on 28 September 1993 from the
University of Amsterdam.
In the pleasant company of Mathias Schultheis and Susanne Höfner.
Dinner party at the workshop "Future directions in AGB research,
on the occasion of the retirement of Harm Habing" in Leiden,
The Netherlands, 10/11 April 2003. Picture taken by Ian Glass (SAAO).
Myself, Maurizio Salaris, Achim Weiss (front row, right to left), happy co-organisers of
"The Giant Branches"
workshop at the Lorentz Center in Leiden, May 11-15, 2009, and most of the other participants.
- Circumstellar matter in late stages of stellar evolution, like
- Asymptotic Giant Branch stars, Post-AGB stars, and Planetary Nebulae
- Carbon stars, Miras, Semi-Regular variables and Supergiants
- The evolution of late-type stars
- AGB population synthesis
- AGB stars in the Magellanic Clouds, and the Local Group
- Modelling the dust and gas emission in the circumstellar envelopes
- The mass-loss phenomenon
- The Lutz-Kelker and other biases in trigonometric parallax data.
- Classical and Type-II Cepheids, RR Lyrae stars & Eclipsing Binaries and the distance scale in the Universe.
I am one of the co-I's of the VISTA Magellanic Cloud (VMC ) survey.
This survey is led by Maria-Rosa Cioni (University of Hertfordshire; University of Potsdam), and will observe
180 square degrees of the Small and Large Magellanic Clouds, the bridge and stream in three filters (YJK).
The main aims are to determine the spatially resolved star formation
history of the Magellanic system, study the (past) interaction, and to determine a 3D picture of it.
My interests are in the late-type stellar component (e.g. AGB stars, and LPVs...), and in the TRGB (Tip of the RGB)
method to study distances.
STARLAB is a projected that formally
started in December 2014 and will run until mid-September 2019. It involves the Royal Observatory of Belgium,
the Institut d'Astronomie of the Universite libre de Bruxelles, and the
Instituut voor Sterrenkunde of the KU Leuven.
The goal of the STARLAB project is to improve our understanding of key physical and chemical
processes at work in single and binary low- and intermediate-mass stars.
Type-II Cepheids (T2C) are an interesting class of variable stars, which have luminosities in between
RR Lyrae and classical Cepheids and also have their own period-luminosity relation.
There has been some recent work on the connection between post-AGB stars (typically of the RV Tau subclass)
and T2C in the Magellanic Clouds, suggesting a new class of stars, dusty Post-RGB objects, likely binaries.
I was the PI. of a Herschel Guaranteed Time Key Program in the domain of post-main-sequence objects,
called MESS (Mass-loss of Evolved StarS).
PACS stands for
"Photodetector Array Camera & Spectrometer" and was one of three
instruments that flew on the
space mission between 2009 and 2013.
PACS performed imaging spectroscopy and imaging photometry in the
57 - 210 micron wavelength range.
The Max-Planck-Institut für Extraterrestrische Physik was the
PI-Institute with the University of Leuven (together with IMEC in Leuven and CSL in Liege) as a
Co-I institute (Co-PI: Prof. Christoffel Waelkens, KUL) at the 20% level.
Somewhere in Vienna,
- Member of the Belgian National ESO committee (BNEC) in various capacities (June 2002 - present).
Chairperson since November 2016.
- Coordinator of the Belgian Guaranteed Time on ESO's VLTI Sub-Array (VISA) (June 2005 - April 2014)
- Euro-VO Scientific Advisory Committee (July 2009 - October 2013)
- Belgian representative in the ESO User Committee (2009 - 2012)
- Belgian representative in the ESO Observing Programmes Committee for periods 73-77.
Member of the ESO OPC for period 78. Panel member for ESO period 80.
Vice-Chair of one of the "stellar" sub-panels in periods 73-78, 80.
Koninklijke Sterrenwacht van België
Tel= + 32 (0)2 3730203
E-mail= martin.groenewegen AT oma.be