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

    A prediction about the age of thick discs as a function of the stellar mass of the host galaxy 2021A&A...645L..13C
    The complex multi-component outflow of the Seyfert galaxy NGC 7130 2021A&A...645A.130C
    LeMMINGs - II. The e-MERLIN legacy survey of nearby galaxies. The deepest radio view of the Palomar sample on parsec scale 2021MNRAS.500.4749B
    The kinematics of young and old stellar populations in nuclear rings of MUSE TIMER galaxies 2020A&A...644A.116R
    Distribution of star formation in galactic bars as seen with Hα and stacked GALEX UV imaging 2020A&A...644A..38D
    An extensive spectroscopic time series of three Wolf-Rayet stars - II. A search for wind asymmetries in the dust-forming WC7 binary WR137 2020MNRAS.497.4448S
    The Black Hole Mass-Color Relations for Early- and Late-type Galaxies: Red and Blue Sequences 2020ApJ...898...83D
    MUSEQuBES: calibrating the redshifts of Ly α emitters using stacked circumgalactic medium absorption profiles 2020MNRAS.496.1013M
    Examining supernova events in Type 1 active galactic nuclei 2020MNRAS.495.4419V
    SDSS-IV MaNGA: Excavating the fossil record of stellar populations in spiral galaxies 2020MNRAS.495.3387P
    The curious activity in the nucleus of NGC 4151: jet interaction causing variability? 2020MNRAS.495.3079W
    Gas fractions and depletion times in galaxies with different degrees of interaction 2020A&A...635A.197D
    A physically motivated definition for the size of galaxies in an era of ultradeep imaging 2020MNRAS.493...87T
    Jointly super-resolved and optically sectioned Bayesian reconstruction method for structured illumination microscopy
    Time-slicing spiral galaxies with SDSS-IV MaNGA 2019MNRAS.489.1338P
    Are ultra-diffuse galaxies Milky Way-sized? 2020A&A...633L...3C
    The shapes of spiral arms in the S<SUP>4</SUP>G survey and their connection with stellar bars 2019A&A...631A..94D
    The GIST pipeline: A multi-purpose tool for the analysis and visualisation of (integral-field) spectroscopic data 2019A&A...628A.117B
    SDSS-IV MaNGA: Spatial Evolution of Star Formation Triggered by Galaxy Interactions 2019ApJ...881..119P
    Properties of extragalactic thick discs recovered from ultra-deep Stripe82 imaging 2019A&A...629A..12M
    SDSS-IV MaNGA: stellar population gradients within barred galaxies 2019MNRAS.488L...6F
    Inner and outer rings are not strongly coupled with stellar bars 2019A&A...625A.146D
    Unveiling the 100 pc scale nuclear radio structure of NGC 6217 with e-MERLIN and the VLA 2019MNRAS.486.4962W
    The new 4-m robotic telescope 2019AN....340...40G
    Star formation and gas in the minor merger UGC 10214 2019A&A...623A.154R
    The kinematics of local thick discs do not support an accretion origin⋆ 2019A&A...623A..89C
    The missing light of the Hubble Ultra Deep Field 2019A&A...621A.133B
    MUSE-AO view of the starburst-AGN connection: NGC 7130 2019A&A...621L...5K
    Discovery of disc truncations above the galaxies' mid-plane in Milky Way-like galaxies 2019MNRAS.483..664M
    Nearly all the sky is covered by Lyman-α emission around high-redshift galaxies 2018Natur.562..229W
    Investigation of the cosmic ray population and magnetic field strength in the halo of NGC 891 2018A&A...615A..98M
    Spatially resolving the dust properties and submillimetre excess in M 33 2018A&A...613A..43R
    MUSE observations of the counter-rotating nuclear ring in NGC 7742 2018A&A...612A..66M
    LeMMINGs - I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores 2018MNRAS.476.3478B
    Exploring the making of a galactic wind in the starbursting dwarf irregular galaxy IC 10 with LOFAR 2018MNRAS.476.1756H
    The nuclear activity and central structure of the elliptical galaxy NGC 5322 2018MNRAS.475.4670D
    The reports of thick discs' deaths are greatly exaggerated. Thick discs are NOT artefacts caused by diffuse scattered light 2018A&A...610A...5C
    The GALEX/S4G Surface Brightness and Color Profiles Catalog. I. Surface Photometry and Color Gradients of Galaxies 2018ApJS..234...18B
    Discovery of massive star formation quenching by non-thermal effects in the centre of NGC 1097 2018NatAs...2...83T
    Dissecting the long-term emission behaviour of the BL Lac object Mrk 421 2017MNRAS.472.3789C