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

    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
    Radio jets in NGC 4151: where eMERLIN meets HST 2017MNRAS.472.3842W
    A remarkably large depleted core in the Abell 2029 BCG IC 1101 2017MNRAS.471.2321D
    The puzzling interpretation of NIR indices: The case of NaI2.21 2017MNRAS.472..361R
    Stellar disc truncations and extended haloes in face-on spiral galaxies 2017MNRAS.470..427P
    The JCMT Nearby Galaxies Legacy Survey - XI. Environmental variations in the atomic and molecular gas radial profiles of nearby spiral galaxies 2017MNRAS.467.4282M
    Inferring gas-phase metallicity gradients of galaxies at the seeing limit: a forward modelling approach 2017MNRAS.468.2140C
    Colors of barlenses: evidence for connecting them to boxy/peanut bulges 2017A&A...599A..43H
    The Radio Spectral Energy Distribution and Star-formation Rate Calibration in Galaxies 2017ApJ...836..185T
    Updated 34-band Photometry for the Sings/KINGFISH Samples of Nearby Galaxies 2017ApJ...837...90D
    Synchrotron emission from the blazar PG 1553+113. An analysis of its flux and polarization variability 2017MNRAS.466.3762R
    The UK Infrared Telescope M 33 monitoring project - V. The star formation history across the galactic disc 2017MNRAS.464.2103J
    A MUSE map of the central Orion Nebula (M 42) 2015A&A...582A.114W
    Interacting galaxies in the nearby Universe: only moderate increase of star formation 2015MNRAS.454.1742K
    The Odd Offset between the Galactic Disk and Its Bar in NGC~3906 2015ApJ...808...90D
    The BaLROG project - I. Quantifying the influence of bars on the kinematics of nearby galaxies 2015MNRAS.451..936S
    Hα kinematics of S4G spiral galaxies - II. Data description and non-circular motions 2015MNRAS.451.1004E
    Starbursts Are Preferentially Interacting: Confirmation from the Nearest Galaxies 2015ApJ...807L..16K
    The Spitzer Survey of Stellar Structure in Galaxies (S4G): Stellar Masses, Sizes, and Radial Profiles for 2352 Nearby Galaxies 2015ApJS..219....3M
    The Spitzer Survey of Stellar Structure in Galaxies (S4G): Multi-component Decomposition Strategies and Data Release 2015ApJS..219....4S
    The Spitzer Survey of Stellar Structure in Galaxies (S4G): Precise Stellar Mass Distributions from Automated Dust Correction at 3.6 μm 2015ApJS..219....5Q
    Triggered star formation in a merging, gas-rich dwarf galaxy around NGC 7241 2015MNRAS.450.2473L
    A Classical Morphological Analysis of Galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S4G) 2015ApJS..217...32B
    Liverpool telescope 2: a new robotic facility for rapid transient follow-up 2015ExA....39..119C
    Stellar population synthesis models between 2.5 and 5 μm based on the empirical IRTF stellar library 2015MNRAS.449.2853R
    The Role of Bars in AGN Fueling in Disk Galaxies Over the Last Seven Billion Years 2015ApJ...802..137C
    Spectroscopic variability of two Oe stars 2015A&A...575A..99R
    Globular Cluster Populations: First Results from S4G Early-type Galaxies 2015ApJ...799..159Z
    The GALEX/S4G UV–IR Color–Color Diagram: Catching Spiral Galaxies Away from the Blue Sequence 2015ApJ...800L..19B
    The Mass Profile and Shape of Bars in the Spitzer Survey of Stellar Structure in Galaxies (S4G): Search for an Age Indicator for Bars 2015ApJ...799...99K
    Overview of the SDSS-IV MaNGA Survey: Mapping nearby Galaxies at Apache Point Observatory 2015ApJ...798....7B
    Evidence for the concurrent growth of thick discs and central mass concentrations from S4G imaging 2014A&A...571A..58C
    Two physical regimes for the giant H II regions and giant molecular clouds in the Antennae galaxies 2014MNRAS.445.1412Z
    A search for stellar tidal debris of defunct dwarf galaxies around globular clusters in the inner Galactic halo 2014MNRAS.445.2971C

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