A5100775096- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Superconducting and THz Device Technology
- Spectroscopy and Laser Applications
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Astronomical Observations and Instrumentation
- Medical Imaging Techniques and Applications
- CCD and CMOS Imaging Sensors
- Astro and Planetary Science
- Phase Equilibria and Thermodynamics
- 3D IC and TSV technologies
- Electronic Packaging and Soldering Technologies
- Radiation Effects in Electronics
- Particle Detector Development and Performance
- Photonic and Optical Devices
- Solar and Space Plasma Dynamics
- Scientific Research and Discoveries
- Advanced Photonic Communication Systems
Technical University of Denmark
2022-2025
Seoul National University
2025
Sungshin Women's University
2024
National Astronomical Observatory of Japan
2014-2024
The University of Tokyo
1993-2024
UK Astronomy Technology Centre
2024
Royal Observatory
2024
Northeast Radio Observatory Corporation
2024
Massachusetts Institute of Technology
2024
Capital Region of Denmark
2024
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...
<ns4:p>The study of transient and variable events, including novae, active galactic nuclei, black hole binaries, has historically been a fruitful path for elucidating the evolutionary mechanisms our universe. The such events in millimeter submillimeter is, however, still its infancy. Submillimeter observations probe variety materials, as optically thick dust, which are hard to other wavelengths. sensitive number emission mechanisms, from aforementioned cold hot free-free emission,...
Abstract We study of the role galaxy–galaxy interactions and disk instabilities in producing starburst activity galaxies out to z = 4. For this, we use a sample 387 with robust total star formation rate measurements from Herschel, gas masses Atacama Large Millimeter/submillimeter Array, stellar redshifts multiband photometry, JWST/NIRCam rest-frame optical imaging. Using mass-controlled samples, find an increased fraction interacting regime at all This increase correlates efficiency (SFE)...
We report on the detection of [CII] 157.7 $\mu$m emission from Lyman break galaxy (LBG) MACS0416_Y1 at z = 8.3113, by using Atacama Large Millimeter/submillimeter Array (ALMA). The luminosity ratio [OIII] 88 (from previous campaigns) to is 9.31 $\pm$ 2.6, indicative hard interstellar radiation fields and/or a low covering fraction photo-dissociation regions. cospatial 850 dust (90 rest-frame, campaigns), however peak does not agree with emission, suggesting that lines originate different...
We report the results of 15 × 3' mapping at 1.1 mm with Atacama Large Millimeter/submillimeter Array toward central region z = 3.09 SSA22 protocluster. By combining our source catalog archival spectroscopic redshifts, we find that eight submillimeter galaxies (SMGs) flux densities, S1.1 0.7–6.4 mJy (LIR ∼ 1012.1–1013.1 L⊙) are 3.08–3.10. Not only these SMGs members protocluster, but they in fact reside within node junction 50 Mpc scale filamentary three-dimensional structure traced by Lyα...
We have obtained three-dimensional maps of the universe in $\sim200\times200\times80$ comoving Mpc$^3$ (cMpc$^3$) volumes each at $z=5.7$ and $6.6$ based on a spectroscopic sample 179 galaxies that achieves $\gtrsim80$\% completeness down to Ly$\alpha$ luminosity $\log(L_{\rm Ly\alpha}/[\mathrm{erg\ s^{-1}}])=43.0$, our Keck Gemini observations literature. The reveal filamentary large-scale structures two remarkable overdensities made out least 44 12 $z=5.692$ (z57OD) $z=6.585$ (z66OD),...
Abstract We present the Atacama Large Millimeter/submillimeter Array detection of [O iii ] 88 μ m line and rest-frame 90 dust continuum emission in a Y -dropout Lyman break galaxy (LBG), MACS0416_Y1 lying behind Frontier Field cluster MACS J0416.1−2403. This confirms LBG with spectroscopic redshift z = 8.3118 ± 0.0003, making this object one farthest galaxies ever identified spectroscopically. The observed 850 flux density 137 26 Jy corresponds to de-lensed total infrared (IR) luminosity...
Abstract We present 0.″2 resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations at 870 μ m in a stellar mass–selected sample of 85 massive ( <?CDATA ${M}_{\star }\gt {10}^{11}\,{M}_{\odot }$?> ) star-forming galaxies (SFGs) $z=1.9\mbox{--}2.6$?> the CANDELS/3D-Hubble Space Telescope fields UDS and GOODS-S. measure effective radius rest-frame far-infrared (FIR) emission for 62 SFGs. They are distributed over wide ranges FIR size from...
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 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...
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...
Abstract We present Atacama Large Millimeter/submillimeter Array (ALMA) deep spectroscopy for a lensed galaxy at z spec = 8.496 with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>log</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:msub> <mml:mrow> <mml:mi>M</mml:mi> </mml:mrow> <mml:mi>star</mml:mi> </mml:msub> stretchy="true">/</mml:mo> <mml:mo>⊙</mml:mo> stretchy="false">)</mml:mo> <mml:mo>∼</mml:mo> <mml:mn>7.8</mml:mn> </mml:math> whose optical...
Abstract We report the physical properties of 18 brightest ( S 870 μ m = 12.4–19.2 mJy) and not strongly lensed m–selected dusty star-forming galaxies (DSFGs), also known as submillimeter (SMGs), in COSMOS field. This sample is part an ALMA band 3 spectroscopic survey (AS2COSPEC), redshifts are measured 17 them at z 2–5. perform spectral energy distribution analyses deduce a median total infrared luminosity L IR (1.3 ± 0.1) × 10 13 ⊙ , infrared-based star formation rate (SFR) SFR 1390 150 M...
We report the discovery of a large-scale structure at z = 3.44 revealed by JWST data in Extended Groth Strip (EGS) field. This structure, called Cosmic Vine, consists 20 galaxies with spectroscopic redshifts 3.43 < 3.45 and six galaxy overdensities (4 − 7 σ ) consistent photometric redshifts, making up vine-like extending over ∼4 × 0.2 pMpc 2 area. The two most massive ( M * ≈ 10 10.9 ⊙ Vine are found to be quiescent bulge-dominated morphologies B / T > 70%). Comparisons simulations...
We report the identification of 64 new candidates compact galaxies, potentially hosting faint quasars with bolometric luminosities L bol = 10 43 –10 46 erg s −1 , residing in reionization epoch within redshift range 6 ≲ z 8. These were selected by harnessing rich multiband datasets provided emerging JWST-driven extragalactic surveys, focusing on COSMOS-Web, as well JADES, UNCOVER, CEERS, and PRIMER. Our search strategy includes two stages: applying stringent photometric cuts to catalog-level...
Context. One of the surprising early findings with JWST has been discovery a strong “roll-over” or softening absorption edge Ly α in large number galaxies at z ≳ 6, addition to systematic offsets from photometric redshift estimates and fundamental galaxy scaling relations. This interpreted as cumulative damped (DLA) wings high column densities neutral atomic hydrogen (H I ), signifying major gas accretion events formation these galaxies. Aims. To explore this new phenomenon systematically,...
We present results from a deep 2'x3' (comoving scale of 3.7 Mpc x 5.5 at z=3) survey 1.1 mm taken with the Atacama Large Millimeter/submillimeter Array (ALMA) in SSA22 field. observe core region z = 3.09 protocluster, achieving typical rms sensitivity 60 micro-Jy/beam spatial resolution 0".7. detect 18 robust ALMA sources signal-to-noise ratio (SNR) > 5. Comparison between map and AzTEC camera on Submillimeter Telescope Experiment (ASTE) indicates that three submillimeter discovered by...
Abstract We present observations and analysis of the starburst PACS-819 at z = 1.45 ( M * 10 10.7 ⊙ ), using high-resolution (0.″1; 0.8 kpc) Atacama Large Millimeter/submillimeter Array (ALMA) multiwavelength JWST images from COSMOS-Web program. Dissimilar to Hubble Space Telescope (HST) ACS in rest-frame UV, redder NIRCam MIRI reveal a smooth central mass concentration spiral-like features, atypical for such an intense starburst. Through dynamical modeling CO J 5–4) emission with ALMA, is...
We present the results of a ~60-hr observational campaign with ALMA targeting spectroscopically confirmed and lensed sub-$L^\star$ galaxy at z=6.07, identified during Lensing Cluster Survey (ALCS). sample dust continuum emission from rest frame 90 to 370 $\mu$m six different frequencies set constraining upper limits on molecular gas line content via CO(7-6) [CI](2-1) for two images $\mu\gtrsim20$. Complementing these sub-mm observations deep optical near-IR photometry spectroscopy JWST, we...
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...
We present an analysis of the JWST NIRCam and MIRI morphological structural properties 80 massive (log 10 ( M * [M ⊙ ]) = 11.2 ± 0.1) dusty star-forming galaxies at z 2.7 −0.7 +1.2 , identified as sub-millimetre (SMGs) by ALMA, which have been observed part PRIMER project. To compare structure these massive, active to more typical, less actively galaxies, we defined two comparison samples. The first 850 field matched in specific star formation rate redshift second stellar mass. From visual...
The SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES) is a three-year JCMT Large Program aiming at reaching the 450 $\mu$m confusion limit in COSMOS-CANDELS region, to study representative sample of high-redshift far-infrared galaxy population that gives rise bulk background. We present first-year data from STUDIES. have reached noise level 0.91~mJy for point sources map center, covered an area 151 arcmin$^2$, and detected 98 141 4.0 3.5 $\sigma$, respectively. Our derived counts are best...
Abstract We present the results from ALMA CO(3–2) observations of 66 Hα-selected galaxies in three protoclusters around radio galaxies: PKS 1138−262 ($z$ = 2.16), USS 1558−003 2.53), and 4C 23.56 2.49). The pointing areas have an overdensity ∼100 compared to mean surface number density field environments. detect CO emission line 16 star-forming galaxies, including six previously published measure molecular gas mass. In stellar mass range 10.5 &lt; log (Mstar/M⊙) 11.0, protocluster larger...
ABSTRACT The central structure in three of the brightest unlensed z = 3–4 submillimeter galaxies is investigated through 0.″015–0.″05 (120–360 pc) 860 μ m continuum images obtained using Atacama Large Millimeter/submillimeter Array (ALMA). distribution kiloparsec AzTEC1 and AzTEC8 extremely complex, they are composed multiple ∼200 pc clumps. AzTEC4 consists two sources that separated by ∼1.5 kpc, indicating a mid-stage merger. peak star formation rate densities clumps ∼300–3000 M ⊙ yr −1 kpc...