A full view of galaxies that inhabit voids
Calar Alto Void Integral-field Treasury surveY, CAVITY, is a Legacy project of Calar Alto Observatory for the coming years. It will generate the first statistically complete data set of galaxies in voids exploring the mass assembly, dark and baryonic, and gas properties of galaxies inhabiting this very low density regions.
We have learnt in the last decades that the majority of galaxies belong to groups and clusters
tracing interconnected structures in a sponge-like fashion. This large-scale structure is
characterised by clusters, filaments, walls, but also under-dense regions, called voids. The void
regions and the galaxies within, as they live in a pristine environment, represent an ideal place
for the study of galaxy formation as they are largely unaffected by the complex physical
processes that transform galaxies in high-density environments. These void galaxies can shed
light into galaxy formation and into the current challenges to the ΛCDM models.
CAVITY will explore with the PMAS instrument located at the 3.5 m telescope of Calar Alto a void galaxy sample with the following aims:
1- Determine how the environment has influenced the mass assembly (baryonic and dark ) of void galaxies.
2- Establish how galaxy formation and its properties are dependent on the larger-scale environment.
3- Find the main driver of galaxy transformation, from star- forming to quiescent, passive systems in voids.
I. Pérez (P.I.), U. Lisenfeld, J. Domínguez-Gómez, E. Florido, L. Galbany, M. Relaño, S. Verley, A. Zurita (Universidad de Granada, Spain); R. García-Benito, S. Duarte-Puertas (Instituto de Astrofísica de Andalucía, Spain); R. Peletier, R. van de Weygaert, T. van der Hulst (Kapteyn Astronomical Institute, the Netherlands), J. Falcón-Barroso, T. Ruiz-Lara, L. Sánchez- Menguiano (Instituto de Astrofísica de Canarias, Spain); K. Kreckel (Heidelberg University, Germany); H. Courtois (University of Lyon, France); M. Argudo-Fernandez /PUCV, Chile); M. Aragon-Calvo (JHU, USA); D. Espada (Square Kilometer Array Organisation); R. Espada- Miura, NAOJ, Japan); Vicent Quilis, S.Planelles Mira (Universidad de Valencia, Spain); P. Sánchez-Blázquez (Universidad Complutense de Madrid, Spain)