A5052746343- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Spectroscopy and Laser Applications
- Scientific Research and Discoveries
- Superconducting and THz Device Technology
- Advanced Measurement and Metrology Techniques
- Pulsars and Gravitational Waves Research
- Quantum Chromodynamics and Particle Interactions
- Iterative Learning Control Systems
- Airway Management and Intubation Techniques
- Nuclear physics research studies
- Vascular Anomalies and Treatments
- Particle Accelerators and Free-Electron Lasers
- Cosmology and Gravitation Theories
- Tracheal and airway disorders
- Particle physics theoretical and experimental studies
- Advanced Multi-Objective Optimization Algorithms
University of Copenhagen
2021-2024
Istituto Giannina Gaslini
2024
Capital Region of Denmark
2024
Istituti di Ricovero e Cura a Carattere Scientifico
2024
University of Groningen
2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2023
DAWN Center for Independent Living
2022-2023
Max Planck Institute for Astrophysics
2018-2021
We present the results of a systematic search for candidate quiescent galaxies in distant Universe eleven $JWST$ fields with publicly available observations collected during first three months operations and covering an effective sky area $\sim145$ arcmin$^2$. homogeneously reduce new data combine them existing from $Hubble\,Space\,Telescope$. select robust sample $\sim80$ quenching at $3 < z 5$ using two methods: (1) based on their rest-frame $UVJ$ colors, (2) novel quantitative approach...
Abstract We present the results of a systematic study rest-frame optical morphology quiescent galaxies at z ≥ 3 using Near-Infrared Camera (NIRCam) on board James Webb Space Telescope (JWST). Based sample selected by UVJ color or NUVUVJ color, we focus 26 with <?CDATA $9.8\lt \mathrm{log}({M}_{\star }/{M}_{\odot })\lt 11.4$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mn>9.8</mml:mn> <mml:mo><</mml:mo> <mml:mi>log</mml:mi> <mml:mo...
There is a large consensus that gas in high-$z$ galaxies highly turbulent, because of combination stellar feedback processes and gravitational instabilities driven by mergers accretion. In this paper, we present the analysis sample five Dusty Star Forming Galaxies (DSFGs) at $4 \lesssim z\lesssim 5$. Taking advantage magnifying power strong lensing, quantified their kinematic dynamical properties from ALMA observations [CII] emission line. We combined measurements obtained for these with...
Abstract We select and characterize a sample of massive (log( M * / ⊙ ) > 10.6) quiescent galaxies (QGs) at 3 < z 5 in the latest Cosmological Evolution Survey catalog (COSMOS2020). QGs are selected using new rest-frame color-selection method, based on their probability belonging to group defined by Gaussian mixture model (GMM) trained colors ( NUV − U , V J similarly 2 3. calculate threshold above which galaxy is classified as simulated from shark semi-analytical model. find that, ≥...
The discovery of galaxies with regularly rotating discs at redshifts $\geq$ has been a puzzling challenge to galaxy formation models that tend predict chaotic gas kinematics in the early Universe as consequence accretion, mergers and efficient feedback. In this work, we investigated five highly resolved z $\sim$ 4.5 observed ALMA [CII] 158 $\mu$m emission line. sample is diverse: AzTEC1 (starburst galaxy), BRI1335-0417 quasar host J081740 (normal star-forming galaxy) SGP38326 (two starburst...
Galaxy clusters are the most massive gravitationally bound structures in Universe, comprising thousands of galaxies and pervaded by a diffuse, hot ``intracluster medium'' (ICM) that dominates baryonic content these systems. The formation evolution ICM across cosmic time is thought to be driven continuous accretion matter from large-scale filamentary surroundings dramatic merger events with other or groups. Until now, however, direct observations intracluster gas have been limited only mature...
Abstract We present a joint analysis of the galaxy S04590 at z = 8.496 based on NIRSpec, NIRCam, and NIRISS observations obtained as part Early Release Observations program James Webb Space Telescope (JWST) far-infrared [C ii ] 158 μ m emission line detected by dedicated Atacama Large Millimeter/submillimeter Array (ALMA) observations. determine physical properties from modeling spectral energy distribution (SED) through redshifted optical nebular lines with JWST/NIRSpec. The best-fit SED...
We present JWST/NIRCam observations of a strongly lensed, sub- L * , multiply imaged galaxy at z = 6.072, with magnification factors μ ≳ 20 across the galaxy. The has rich HST, MUSE, and ALMA ancillary broad wavelength range. Aiming to quantify reliability stellar mass estimates high redshift galaxies, we performed spatially resolved analysis physical properties scales ∼200 pc, inferred from spectral energy distribution (SED) modelling five imaging bands covering 0.16 μm < λ rest 0.63 on...
Context. Theoretical models struggle to reproduce dynamically cold disks with significant rotation-to-dispersion support ( V rot / σ ) observed in star-forming galaxies the early Universe at redshift z > 4. Aims. We aim explore possible emergence of cosmological simulations and understand whether different kinematic tracers can help reconcile tension between theory observations. Methods. used 3218 from S ERRA suite zoom-in simulations, 8 ≤ log( M ⋆ ⊙ 10.3 star formation rates SFR 128 /yr,...
ABSTRACT While the kinematics of galaxies up to z ∼ 3 have been characterized in detail, only a handful at high redshift (z &gt; 4) examined such way. The Atacama Large Millimeter/submillimeter Array (ALMA) Program INvestigate [C ii] Early times (ALPINE) survey observed statistically significant sample 118 star-forming main-sequence = 4.4–5.9 ii]158 $\mu$m emission, increasing number observations by nearly 10×. A preliminary qualitative classification these sources revealed diversity...
Context. The characterization of the dynamical state galaxies up to z ∼ 7 is crucial for constraining mechanisms that drive mass assembly in early Universe. However, it unclear whether data quality typical observations obtained with current and future facilities sufficient perform a solid analysis at these redshifts. Aims. This paper defines angular resolution signal-to-noise ratio (S/N) required robust Epoch Reionization. final aim help design spatially resolved surveys targeting emission...
We utilise the unprecedented depth and resolution of recent early-release science (ERS) JWST observations to define near-infrared counterparts sub-millimetre selected galaxies (SMGs). identify 45 SCUBA-2 SMG positions within The Cosmic Evolution Early Release Science Survey (CEERS) JWST/NIRCam fields. Through an analysis multi-wavelength $p$-values, NIRCam colours predicted fluxes, we 43 SMGs, finding a 63 per cent agreement with those identified in prior $HST$ studies. Using EaZy-py fit...
Context. Spatially resolved studies of the kinematics galaxies provide crucial insights into their assembly and evolution, enabling one to infer properties dark matter halos, derive impact feedback on interstellar medium (ISM), as well measure characterize outflow motions. To date, most kinematic at z = 0.5 − 3.5 have been obtained using emission lines tracing warm, ionized gas (e.g., H α , [OII], [OIII]). However, whether these an exhaustive or only a partial view dynamics ISM is still...
Our knowledge of galaxy formation and evolution has incredibly progressed through multi-wavelength observational constraints the interstellar medium (ISM) galaxies at all cosmic epochs. However, little is known about physical properties more diffuse lower surface brightness reservoir gas dust that extends beyond ISM scales fills dark matter haloes up to their virial radii, circumgalactic (CGM). New theoretical studies increasingly stress relevance latter for understanding feedback feeding...
Our knowledge of galaxy formation and evolution has incredibly progressed through multi-wavelength observational constraints the interstellar medium (ISM) galaxies at all cosmic epochs. However, little is known about physical properties more diffuse lower surface brightness reservoir gas dust that extends beyond ISM scales fills dark matter haloes up to their virial radii, circumgalactic (CGM). New theoretical studies increasingly stress relevance latter for understanding feedback feeding...
Photometric redshifts are widely used in studies of dusty star-forming galaxies (DSFGs), but catastrophic photo-$z$ failure can undermine all redshift-dependent results. Here we report the spectroscopic redshift confirmation COSBO-7, a strongly lensed DSFG COSMOS-PRIMER field. Recently, photometric solution $z\gtrsim7.0$ was reported for COSBO-7 based on ten bands {\it James Webb} Space Telescope (JWST) NIRCam and MIRI imaging data. This $z$ value favored by four independent spectral energy...
Optically dark dusty star-forming galaxies (DSFGs) play an essential role in massive galaxy formation at early cosmic time; however, their nature remains elusive. Here, we present a detailed case study of all the baryonic components z=4.821 DSFG, XS55. Selected from ultra-deep COSMOS-XS 3GHz map with red SCUBA-2 450μm/850μm colour, XS55 was followed up ALMA 3mm line scans and spectroscopically confirmed to be via detections CO(5-4) C I (1-0) lines. JWST/NIRCam imaging reveals that is F150W...
Globular clusters (GCs) are some of the oldest bound structures in Universe, holding clues to earliest epochs star formation and galaxy assembly. However, accurate age measurements ancient challenging due age-metallicity degeneracy. Here, we report discovery 42 compact stellar systems within 'Relic', a massive, quiescent at $z=2.53$. The Relic resides an over-density behind Abell 2744 cluster, with prominent tidal tail extending towards two low-mass companions. Using deep data from...
<title>Abstract</title> Early galaxy formation, initiated by the dark matter and gas assembly, evolves through frequent mergers feedback processes into dynamically hot, chaotic structures<sup>1</sup>. In contrast, cold, smooth rotating disks have been observed in massive evolved galaxies merely 1.4 billion years after Big~Bang<sup>2</sup>, suggesting rapid morphological dynamical evolution early Universe. Probing this mechanism necessitates studies of young galaxies, yet efforts hindered...
We report the spectroscopic confirmation of a merging pair massive quiescent galaxies at z=3.44. Using JWST observations, we confirm that two lie projected separation 4.5 kpc with velocity offset ∼ 680 (δ_z 0.01). The resides in core known rich overdensity galaxies, dubbed "Cosmic Vine". For both members, modeling spectral energy distributions and faint rest-frame optical emission lines indicate high stellar masses (M_⋆/M_⊙) ∼10.9) suppressed star formation (log <-10), more than an order...
The distribution of galaxies in the stellar specific angular momentum versus mass plane ($j_{\star}$-$M_{\star}$) provides key insights into their formation mechanisms. In this paper, we determine location a sample ten field/group unbarred lenticular (S0) from CALIFA survey. We performed bulge-disc decomposition both photometrically and kinematically to study disc components alone understand evolutionary links between S0s other Hubble types. found that eight our S0 discs have...
We resolve the host galaxies of seven gravitationally lensed quasars at redshift 1.5 to 2.8 using observations with Atacama Large (sub-)Millimetre Array. Using a visibility-plane lens modelling technique, we create pixellated reconstructions dust morphology, and CO line morphology kinematics. find that quasar hosts in our sample can be distinguished into two types: 1) characterised by clumpy, extended distributions ($R_{\rm eff}\sim2$ kpc) mean star formation rate surface densities...
We present the first detection of [N II] 122 $\mu$m and [O III] 52 lines for a reionisation-epoch galaxy. Based on these previous [C 158 88 measurements, using two different radiative transfer models interstellar medium, we estimate an upper limit electron density $\lesssim$ 500 cm$^{-3}$ gas-phase metallicity $Z/Z_\odot \sim 1.1 \pm 0.2$ A1689-zD1, gravitationally-lensed, dusty galaxy at $z$ = 7.133. Other measurements or indicators so far in media $z \gtrsim$ 6 are typically order...
Outflows driven by active galactic nuclei (AGN) are expected to have a significant impact on the host galaxy evolution, but it is still debated how they accelerated and propagate galaxy-wide scales. This work addresses these questions studying link between X-ray, nuclear ultra-fast outflows (UFOs) extended ionised outflows, for first time in two quasars close peak of AGN activity ($z\sim2$), where feedback be more effective. As targets, we selected multiple-lensed at $z\sim1.5$, HS 0810+2554...