The FDS survey, started in 2013, uses the telescopes at the European Southern Observatory and is performed by an international team consisting from researchers in various ESO member states and Chile. The survey is supported by observations using various other instruments and telescopes, amongst which VIRCAM on the VISTA telescope, and VIMOS and MUSE at the VLT.
The research in my group concentrates
on the dwarf galaxies in the Fornax cluster. Aku Venhola, who
finished his thesis in 2019 in Groningen with a double degree
with Oulu, did the full data reduction, and defined the dwarf
catalog (FDSDC). Seyda Sen (graduated in 2020) worked on
detailed stellar population modelling of the stellar populations in dwarf galaxies in Fornax. Elaheh Hamraz (graduated in 2020) worked on young populations in dwarfs in the Fornax and Virgo cluster. Sara Eftekhari is analyzing Integral Field Spectroscopy, to study the internal kinematics of dwarfs, and their resolved stellar populations. In the SUNDIAL project there are also other people outside Groningen, who work on the FDSDC: Alan Su (Oulu) is analyzing detailed morphology and nuclear clusters. Shivangee Rathi (Gent) is working on the stellar populations in the very outer parts, from deep colour profiles. Michele Mastropietro has been doing simulations on dwarf galaxies falling into the Fornax Cluster, with a particular emphasis on NGC 1427A.
We are also using FDS in a Citizen's
Science project. Since it is difficult to find out whether a
galaxy in the FDS field is a dwarf galaxy in the cluster, or a
large, massive galaxy behind it, we have tried developing
algorithms to do this, but have also built a programme on
Zooniverse, where members of the public can answer this
question. This programme is called Space
Fluff. Space Fluff has been set up by Anna Lanteri, as a
SUNDIAL internship student in Groningen, and analyzed by
bachelor student Christiaan Seerden. A paper in the refereed
literature is in preparation.
Click here for the main results of the
FDS up to now.
The most important FDS papers are these:
You can find all FDS-related papers
A counterpart for the FDS
in the field and in groups is the VEGAS survey, led by my
Italian collaborators, in particular, Enrica Iodice.
3. The X-Shooter Spectral Library
The X-Shooter Spectral Library is a
collection of 3000–25000 Å all stellar spectra observed at a
resolving power of R = λ/Δλ ~ 10 000 with the
medium-resolution spectrograph X-shooter at the Very
Large Telescope (VLT).
The library enables a new generation of stellar population
models to study the stellar populations in galaxies. The
library is used to make stellar population models for
integrated stellar populations. When making the library, we
paid particular attention to cool stars, to optimize the
models in the near-infrared.
am a co-PI of this project. The project is led by Scott
Trager, and the other co-PI is Ariane Lancon (Strasbourg).
Involved, amongst others, are the ex-Kapteyn postdoc Mariya
Lyubenova, Anais Gonneau, ex-Kapteyn postdoc and Matthijs
Dries, Kapteyn PhD student, as well as my ex-PhD student
Yanping Chen. Also collaborators Alexandre Vazdekis, Jesus
Falcon-Barroso, Paola Coelho, Philippe Prugniel and Patricia
Sanchez-Blazquez are involved. Most of the work at the
moment is done by my PhD student Kristiina Verro.
project is well underway. We published the following papers.
Two data release papers:
2020: Gonneau et al.: The X-shooter Spectral Library (XSL): Data Release 2
and 4 papers dealing with aspects of the library:
Gonneau et al.: Carbon
stars in the X-shooter Stellar Library
2017: Gonneau et al.: Carbon stars in the X-shooter Stellar Library. II: Comparison with Models
Arentsen et al.: Stellar
atmospheric parameters for 764 spectra from the X-shooter
Lancon et al.: A
comparison between X-shooter spectra and PHOENIX models
across the HR-diagram
also published several conference proceedings.
The KIWICS project and the WEAVE surveys
INT imaging data of nearby galaxy clusters, to obtain
photometric properties of their dwarf galaxies, to use dwarf
galaxies as probes to study the evolution of galaxies in
cluster. The PI's of KIWICS are Alfonso Aguerri (IAC) and
myself. We published 2 papers on Ultra Diffuse Galaxies in
KIWICS (Mancera Pina et al. 2018,
This work is done in preparation of the WEAVE
Cluster survey. In the WEAVE project I am co-leader (with
Alfonso Aguerri) of the nearby tear of the WEAVE Cluster
A study of properties of galaxies in
voids. See http://www.ugr.es/~isa/
6. The BEARDS project
A study of bulge-less galaxies, to
understand the how galaxies evolve without bulges. This is a
La Palma CTI project.