Spiral Galaxies: Evolution and Consequences

    General
    Description

    Our small group is well known and respected internationally for our innovative and important work on various aspects of the structure and evolution of nearby spiral galaxies. We primarily use observations at various wavelengths, exploiting synergies that allow us to answer the most pertinent questions relating to what the main properties of galaxies are, and how galaxies have evolved to their current state. We use imaging and spectroscopy, at UV, optical, infrared, millimetre, and radio wavelengths, fully exploiting observing facilities available to us in Spain, at ESO, or elsewhere, along with state-of-the-art analysis tools. The success of this approach can be measured from the employment opportunities offered to ex-members of the group, from the number and quality of collaborations with leading external scientists, from continued citation of our published work, and from invitations to co-organise or speak at the leading international conferences in the field.

    In the last few years our group has put a lot of effort into opening up joint research lines with computer scientists, recognising the paradigm shift that is upon us due to the enormous quantities of data that will soon be produced by facilities such as LSST, Euclid, and SKA. We collaborate with computer scientists and aim to prepare the analysis tools, including detection of structure from noise, correction for scattered light and Galactic cirrus, and the use of machine learning-based techniques, so that once LSST (2020) and Euclid (2023) start releasing their huge data sets, our group is ready to analyse them and extract the science from the oceans of bytes.

    Principal investigator
    Project staff
    1. From thermal and non-thermal radio maps of the centre of NGC 1097, we discovered that the massive star formation is quenched by non-thermal effects, including pressure from the magnetic field, cosmic rays and turbulence.
    2. In the centre of NGC 7742, we found a slightly warped inner disk, and two separate stellar components: an old population that counter-rotates with the gas, and a young one, concentrated to the ring, that co-rotates with the gas.
    3. We re-analysed our deep IR imaging of thick disks to correct for the extended S4G point spread function (PSF), confirming all our previous results and in particular confirming the significant mass present in the thick disk component.
    4. Analysing a new high-resolution e-MERLIN 1.5 GHz radio continuum map together with HST and SDSS imaging of NGC 5322, an elliptical galaxy hosting radio jets, we found that the low-luminosity AGN/jet-driven feedback may have quenched the late-time nuclear star formation promptly.
    5. From MUSE observations of low-surface-brightness Lyman-α emission surrounding faint galaxies at redshifts between 3 and 6 we find that the projected sky coverage approaches 100 per cent.

    Related publications

    ALMA Reveals Diverse Dust-to-gas Mass Ratios and Quenching Modes in Old Quiescent Galaxies 2025ApJ...995L..63L
    Simulation-based inference of galaxy properties from JWST pixels 2025A&A...703A.229I
    Shock-driven heating in the circumnuclear star-forming regions of NGC 7582: insights from JWST NIRSpec and MIRI/MRS spectroscopy 2025MNRAS.544.3361V
    Negative gas-phase metallicity gradients in the narrow-line region and galactic disc of local galaxies hosting active galactic nuclei 2025A&A...703A.161A
    Euclid: Early Release Observations ─ Interplay between dwarf galaxies and their globular clusters in the Perseus galaxy cluster 2025A&A...703A.184S
    GATOS. VIII. On the Physical Origin of the Extended Mid-infrared Emission in Active Galactic Nuclei 2025ApJ...994..206L
    Excitation of Molecular Hydrogen in Seyferts: NGC 5506 and NGC 3081 2025ApJ...993..217D
    GATOS – IX. A detailed assessment and treatment of emission line contamination in JWST/MIRI images of nearby Seyfert galaxies 2025MNRAS.544..648C
    Deep imaging of the galaxy Malin 2 shows new faint structures and a candidate satellite dwarf galaxy 2025A&A...702A.136J
    Theoretical Diagnostics for the Physical Conditions in Active Galactic Nuclei under the View of JWST 2025ApJS..280...65Z
    Intra-cluster light as a dynamical clock for galaxy clusters: Insights from the MAGNETICUM, IllustrisTNG, Hydrangea, and Horizon-AGN simulations 2025A&A...700A..95K
    The relationship between nuclear rings and the overall galaxy morphology 2025A&A...700A.101J
    NASIM: Revealing the low surface brightness Universe from legacy VISTA data 2025A&A...701A.116S
    Characterizing the outer disk of extended-UV galaxies in the optical domain with deep surveys 2025A&A...700A..56B
    How to prepare competitive proposals and job applications 2025NatAs...9..951K
    Euclid: Early Release Observations – The surface brightness and colour profiles of the far outskirts of galaxies in the Perseus cluster 2025A&A...699A.214M
    Molecular gas excitation and outflow properties of obscured quasars at z ∼ 0.1 2025A&A...699A..83A
    JWST MIRI reveals the diversity of nuclear mid-infrared spectra of nearby type 2 quasars 2025A&A...698A.194R
    MaNGA AGN dwarf galaxies (MAD): II. AGN outflows in dwarf galaxies 2025A&A...697A.235R
    The Complete Spitzer Survey of Stellar Structure in Galaxies (CS<SUP>4</SUP>G) 2025A&A...697A..38S
    Euclid: Early Release Observations – Globular clusters in the Fornax galaxy cluster, from dwarf galaxies to the intracluster field 2025A&A...697A..10S
    Euclid: Early Release Observations – Deep anatomy of nearby galaxies 2025A&A...697A...9H
    JWST reveals the diversity of nuclear obscuring dust in nearby AGN: nuclear isolation of MIRI/MRS data cubes and continuum spectral fitting 2025MNRAS.539.2158G
    Euclid: Early Release Observations – Programme overview and pipeline for compact- and diffuse-emission photometry 2025A&A...697A...6C
    Euclid: I. Overview of the Euclid mission 2025A&A...697A...1E
    A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE): XVIII. Reconstructing the star formation history of early-type galaxies through the combination of their UV and Hα emission 2025A&A...696A..79M
    DES to HSC: Detecting low-surface-brightness galaxies in the Abell 194 cluster using transfer learning 2025A&A...695A.106T
    Unveiling the warm molecular outflow component of type-2 quasars with SINFONI 2025A&A...695A.185Z
    The ALPINE-ALMA [CII] Survey: Unveiling the baryon evolution in the interstellar medium of z ∼ 5 star-forming galaxies 2025A&A...694A..82S
    Testing disc reprocessing models for AGN optical variability by comparison of X-ray and optical power spectra of NGC 4395 2025MNRAS.537..293B
    The Galaxy Activity, Torus, and Outflow Survey (GATOS): VI. Black hole mass estimation using machine learning 2025A&A...693A.311P
    Molecular gas stratification and disturbed kinematics in the Seyfert galaxy MCG-05-23-16 revealed by JWST and ALMA 2025A&A...693A.174E
    Tracing the evolutionary pathways of dust and cold gas in high-z quiescent galaxies with SIMBA 2025A&A...693A.118L
    WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet 2024MNRAS.535.2269A
    CAVITY: Calar Alto Void Integral-field Treasury surveY: I. First public data release 2024A&A...691A.161G
    First Detection of Molecular Gas in the Giant Low Surface Brightness Galaxy Malin 1 2024ApJ...975L..26G
    CLOUDY modeling suggests a diversity of ionization mechanisms for diffuse extraplanar gas 2024A&A...691A..16R
    The CAVITY Project: Spatially-Resolved and Characteristic Properties of Galaxies Derived Using pyPipe3D 2024RMxAA..60..323S
    Gas flows in the central region of the Seyfert galaxy NGC 4593 with MUSE 2024A&A...690A.277M
    Retrieval of the physical parameters of galaxies from WEAVE-StePS-like data using machine learning 2024A&A...690A.198A