A5041898601- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Molecular Spectroscopy and Structure
- Astronomical Observations and Instrumentation
- Spectroscopy and Laser Applications
- Adaptive optics and wavefront sensing
- Pulsars and Gravitational Waves Research
- Solar and Space Plasma Dynamics
- Geophysics and Gravity Measurements
- Radio Astronomy Observations and Technology
- Advanced Combustion Engine Technologies
- SAS software applications and methods
- Marine and environmental studies
- Calibration and Measurement Techniques
- Maritime and Coastal Archaeology
- Space Exploration and Technology
- Atmospheric Ozone and Climate
- Spectroscopy and Chemometric Analyses
- Impact of Light on Environment and Health
Durham University
2021-2025
École Polytechnique Fédérale de Lausanne
2024
Observatoire de Lyon
2024
Université Claude Bernard Lyon 1
2024
Centre National de la Recherche Scientifique
2024
University of Tübingen
2023
University of California, Berkeley
2018-2021
Texas Tech University
2018-2021
Radboud University Nijmegen
2014-2020
University of Canterbury
2018
Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational-wave events involving spectacular black-hole mergers, indicate that the low-metallicity Universe is fundamentally different from our own Galaxy. Many transient phenomena will remain enigmatic until we achieve a firm understanding physics evolution stars at low metallicity (Z). The Hubble Space Telescope has devoted 500 orbits to observe 250 Z in ultraviolet (UV) with COS STIS...
We present a new integral-field spectroscopic dataset of the central part Orion Nebula (M 42), observed with MUSE instrument at ESO VLT. reduced data public pipeline. The output products are two FITS cubes spatial size ~5.9'x4.9' (corresponding to ~0.76 pc x 0.63 pc) and contiguous wavelength coverage 4595...9366 Angstrom, spatially sampled 0.2". provide versions sampling 1.25 Angstrom 0.85 in dispersion direction. Together variance these files have 75 110 GiB on disk. They represent one...
We present MUSE integral field data of two HII region complexes in the Large Magellanic Cloud (LMC), N44 and N180. Both regions consist a main superbubble number smaller, more compact that formed on edge superbubble. For total 11 regions, we systematically analyse radiative mechanical feedback from massive O-type stars surrounding gas. exploit property coverage HeII$\lambda$5412 line to identify classify feedback-driving stars, estimated spectral types luminosity classes determine stellar...
Baryonic feedback is expected to play a key role in regulating the star formation of low-mass galaxies by producing galaxy-scale winds associated with mass-loading factors β ∼ 1 − 50. We test this prediction using sample 19 nearby systems stellar masses 10 7 < M ⋆ / ⊙ , mostly lying above main sequence star-forming galaxies. used MUSE at VLT optical integral field spectroscopy study warm ionised gas kinematics these via detailed modelling their H α emission line. The characterised...
Integral field unit (IFU) data of the iconic Pillars Creation in M16 are presented. The ionisation structure pillars was studied great detail over almost entire visible wavelength range, and maps relevant physical parameters, e.g. extinction, electron density, temperature, line-of-sight velocity ionised neutral gas shown. In agreement with previous authors, we find that pillar tips being photo-evaporated by massive members nearby cluster NGC 6611. They display a stratified where emission...
ABSTRACT We have developed an iterative procedure to systematically combine the millimeter and submillimeter images of OB cluster-forming molecular clouds, which were taken by ground-based (CSO, JCMT, APEX, IRAM-30 m) space telescopes ( Herschel Planck ). For seven luminous <?CDATA $L\gt {10}^{6}$?> L ⊙ ) Galactic clouds selected for our analyses, namely W49A, W43-Main, W43-South, W33, G10.6-0.4, G10.2-0.3, G10.3-0.1, we performed single-component, modified blackbody fits each pixel combined...
SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing program designed to investigate massive star formation HII regions in sample of local extended galaxies. The will use imaging Fourier transform spectrograph SITELLE at Canada-France-Hawaii Telescope. Over 355 hours (54.7 nights) have been allocated beginning fall 2018 for eight consecutive semesters. Once completed, SIGNALS provide statistically reliable laboratory including over 50 000...
Integral field units enable resolved studies of a large number star-forming regions across entire nearby galaxies, providing insight on the conversion gas into stars and feedback from emerging stellar populations over unprecedented dynamic ranges in terms spatial scale, region properties, environments. We use VLT/MUSE legacy data set covering central $35$ arcmin$^{2}$ (${\sim}12$ kpc$^{2}$) galaxy NGC 300 to quantify effect as function local galactic environment. extract spectra emission...
Giant molecular clouds (GMCs) are the sites of star formation and stellar feedback in galaxies. Their properties set initial conditions for their lifecycles determine how regulates galaxy evolution. In recent years, advent high-resolution telescopes has enabled systematic GMC-scale studies interstellar medium nearby galaxies, now covering a wide range physical allowing first GMC depend on galactic environment. These observational developments have been accompanied by numerical simulations...
We study pre-supernova feedback in a sample of $\sim$ 4700 HII regions the nearby spiral galaxy M83, identified on their H$\alpha$ emission. pectroscopically identify Wolf-Rayet (WR) stars populating star-forming regions. For each region, we compute pressure ionised gas ($P_{\rm ion}$) and direct radiation dir}$) acting investigate how they vary with galactocentric distance, physical properties galactic environment ($P_\mathrm{DE}$). subset 500 regions, also link between terms cluster...
We present optical integral field unit (IFU) observations of the Mystic Mountains, a dust pillar complex in center Carina Nebula that is heavily irradiated by nearby young massive cluster Trumpler 14. With continuous spatial and spectral coverage data from Multi-Unit Spectroscopic Explorer (MUSE), we measure physical properties ionized gas including electron density temperature, excitation, ionization. MUSE also provides an excellent view famous jets HH 901, 902, 1066, revealing them to be...
Abstract We present optical integral field unit (IFU) observations of the Mystic Mountains, a dust pillar complex in center Carina Nebula that is heavily irradiated by nearby young massive cluster Trumpler 14. With continuous spatial and spectral coverage data from Multi-Unit Spectroscopic Explorer (MUSE), we measure physical properties ionized gas including electron density temperature, excitation, ionization. MUSE also provides an excellent view famous jets HH 901, 902, 1066, revealing...
Massive stars drive the ionization and mechanical feedback within young star-forming regions. The Large Magellanic Cloud (LMC) is an ideal galaxy for studying individual massive quantifying their contribution to environment. We analyze eight exemplary targets in LMC N11,B from Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES) program using novel spectra UV, VLT ( optical. model early late O-type state-of-the-art PoWR atmosphere models. determine stellar wind parameters...
The INT Galactic Plane Survey (IGAPS) is the merger of optical photometric surveys, IPHAS and UVEX, based on data from Isaac Newton Telescope (INT) obtained between 2003 2018. Here, we present IGAPS point source catalogue. It contains 295.4 million rows providing photometry in filters, i, r, narrow-band Halpha, g U_RGO. footprint fills coordinate range, |b| < 5deg 30deg l 215deg. A uniform calibration, referred to Pan-STARRS system, applied g, r while Halpha calibration linked then...
Abstract We present the first results of eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on characterization planet-forming disks in massive star-forming regions. These regions are likely representative environment most planetary systems formed. Understanding impact planet formation is critical order to gain insights into diversity observed exoplanet populations. XUE targets 15 three areas NGC 6357, hosts numerous OB stars, including some stars our...
We present an analysis of the effect feedback from O- and B-type stars with data integral field spectrograph MUSE mounted on Very Large Telescope pillar-like structures in Carina Nebular Complex, one most massive star-forming regions Galaxy. For observed pillars, we compute gas electron densities temperatures maps, produce integrated line velocity maps ionised gas, study ionisation fronts at pillar tips, analyse properties single regions, detect two jets originating distinct tips. each tip...
We measure resolved (kiloparsec-scale) outflow properties in a sample of 10 starburst galaxies from the DUVET sample, using Keck/KCWI observations H$\beta$ and [OIII]~$\lambda$5007. $\sim450$ lines-of-sight that contain outflows, use these to study scaling relationships velocity ($v_{\rm out}$), mass-loading factor ($\eta$; mass rate per SFR) flux ($\dot{\Sigma}_{\rm out}$; area) with co-located SFR surface density ($\Sigma_{\rm SFR}$) stellar ($\Sigma_{\ast}$). find strong, positive...
Aims: Jets are excellent signposts for very young embedded protostars, so we want to identify jet-driving protostars as a tracer of the currently forming generation stars in Carina Nebula, which is one most massive galactic star-forming regions and characterised by particularly high levels massive-star feedback on surrounding clouds. Methods: We used archive data construct large (> 2 deg x deg) Spitzer IRAC mosaics Nebula performed spatially complete search objects with excesses 4.5...
Here we describe a new study of the SNRs and SNR candidates in nearby face-on spiral galaxy M83, based primarily on MUSE integral field spectroscopy. Our revised catalog M83 has 366 objects, 81 which are reported here for first time. Of these, 229 lie within observation region, 160 have spectra with [SII]:Halpha ratios exceeding 0.4, value generally accepted as confirmation that an emission nebula is shock-heated. Combined 51 outside region high ratios, there 211 spectroscopically-confirmed...
We present a large VLT/MUSE mosaic (3.8 x 3.8 kpc) of the nearby spiral galaxy M83, with spatial resolution ~20 pc. obtained kinematics stars and ionised gas, compared them molecular gas from ALMA CO(2-1). separated into HII regions diffuse (DIG) determined fraction Ha luminosity originating DIG (f_DIG). observe that both trace galactic disk rotation, as well fast-rotating nuclear component, likely connected to secular processes driven by bar. In kinematics, we stream east nucleus,...
We present MUSE Integral Field Unit (IFU) observations of five individual HII regions in two giant (>100 pc radius) star-forming complexes the low-metallicity ($Z$~0.33 $Z_{\odot}$) nearby (D ~ 2 Mpc) dwarf spiral galaxy NGC 300. combine IFU data with high spatial resolution HST photometry to demonstrate extraction stellar spectra and classification stars from ground-based at distance Mpc. For complexes, which no O-type had previously been identified, we find a total 13 newly identified mass...