A5007200934- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Radio Astronomy Observations and Technology
- Astrophysics and Star Formation Studies
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Cosmology and Gravitation Theories
- Advanced Thermodynamic Systems and Engines
- Superconducting and THz Device Technology
- Plant Water Relations and Carbon Dynamics
- Calibration and Measurement Techniques
- Spectroscopy and Laser Applications
- Scientific Research and Discoveries
- Relativity and Gravitational Theory
- Scientific Measurement and Uncertainty Evaluation
- Adaptive optics and wavefront sensing
- Advanced Sensor Technologies Research
- Astro and Planetary Science
- Refrigeration and Air Conditioning Technologies
- Historical Geography and Cartography
- Neutrino Physics Research
Max Planck Institute for Astronomy
2018-2022
University of Zagreb
2014-2019
Max Planck Society
2019
Purple Mountain Observatory
2018
Chinese Academy of Sciences
2018
Laboratoire de Physique Subatomique et des Technologies Associées
2015-2016
We present the XXL Survey, largest XMM programme totaling some 6.9 Ms to date and involving an international consortium of roughly 100 members. The Survey covers two extragalactic areas 25 deg2 each at a point-source sensitivity ~ 5E-15 erg/sec/cm2 in [0.5-2] keV band (completeness limit). survey's main goals are provide constraints on dark energy equation state from space-time distribution clusters galaxies serve as pathfinder for future, wide-area X-ray missions. review science objectives,...
We present the VLA-COSMOS 3 GHz Large Project based on 384 hours of observations with Karl G. Jansky Very Array (VLA) at (10 cm) toward two square degree Cosmic Evolution Survey (COSMOS) field. The final mosaic reaches a median rms 2.3 uJy/beam over degrees an angular resolution 0.75". To fully account for spectral shape and variations across broad (2 GHz) band, we image all data multiscale, multifrequency synthesis algorithm. catalog 10,830 radio sources down to 5 sigma, out which 67 are...
(abridged) We study the composition of faint radio population selected from VLA-COSMOS 3GHz Large Project. The survey covers a 2.6sq.deg. area with mean rms ~2.3uJy/b, cataloging 10830 sources (>5sigma). Combining these data optical, near-infrared (UltraVISTA), mid-infrared (Spitzer/IRAC) data, and X-ray (Chandra), we find counterparts to for ~93% sample (in areas COSMOS field not affected by saturated or bright in optical NIR bands), reaching out z<6. further classify as star forming...
Abstract We present a “super-deblended” far-infrared (FIR) to (sub)millimeter photometric catalog in the Cosmic Evolution Survey (COSMOS), prepared with method recently developed by Liu et al., key adaptations. obtain point-spread function fitting photometry at fixed prior positions including 88,008 galaxies detected VLA 1.4, 3 GHz, and/or MIPS 24 μ m images. By adding specifically carved mass-selected sample (with an evolving stellar mass limit), highly complete of 194,428 is achieved for...
We make use of the deep Karl G. Jansky Very Large Array (VLA) COSMOS radio observations at 3 GHz to infer luminosity functions star-forming galaxies up redshifts z~5 based on approximately 6000 detections with reliable optical counterparts. This is currently largest radio-selected sample available out across an area 2 square degrees a sensitivity rms=2.3 ujy/beam. By fixing faint and bright end shape function local values, we find strong redshift trend that can be fitted pure evolution...
We make use of sensitive (9.3 microJy/beam RMS) 1.2mm-continuum observations from the ASPECS ALMA large program Hubble Ultra Deep Field (HUDF) to probe dust-enshrouded star formation 1362 Lyman-break galaxies spanning redshift range z=1.5-10 (to ~7-28 Msolar/yr at 4 sigma over entire range). find that fraction ALMA-detected in our samples increases steeply with stellar mass, detection rising 0% 10^9 Msolar 85(-18)(+9)% >10^{10} Msolar. Moreover, stacking all 1253 low-mass (<10^{9.25} Msolar)...
We present a study of the [CII] 158micron line and underlying far-infrared (FIR) continuum emission 27 quasar host galaxies at z~6, traced by Atacama Large Millimeter/submillimeter Array spatial resolution ~1 physical kpc. The in bright, central regions quasars have sizes 1.0-4.8kpc. dust is typically more compact than [CII]. find that 13/27 (approximately one-half) companion field, projected separations 3-90kpc. position Gaia-corrected positions accreting black holes are cospatial (typical...
Using spectroscopic observations taken for the VIMOS Ultra-Deep Survey (VUDS) we report here on discovery of PCl J1001+0220, a massive proto-cluster located at $z_{spec}\sim4.57$ in COSMOS field. The was initially detected as $\sim12\sigma$ overdensity typical star-forming galaxies blind survey early universe ($2<z<6$) performed by VUDS. It further mapped using new technique developed that statistically combines and photometric redshifts, latter derived from recent compilation deep...
We present a CO and atomic fine-structure line luminosity function analysis using the ALMA Spectroscopic Survey in Hubble Ultra Deep Field (ASPECS). ASPECS consists of two spatially-overlapping mosaics that cover entire 3mm 1.2mm bands. combine results candidate search data cube with those previously obtained from cube. Our shows $\sim$80% flux observed at arises CO(2-1) or CO(3-2) emitters $z$=1-3 (`cosmic noon'). At 1.2mm, more than half intermediate-J transitions ($J_{\rm up}$=3-6);...
We report new Northern Extended Millimeter Array (NOEMA) observations of the [CII], [NII] and [OI] atomic fine structure lines dust continuum emission J1148+5251, a z=6.42 quasar, that probe physical properties its interstellar medium (ISM). The radially-averaged [CII] have similar extensions (up to $\theta = 2.51^{+0.46}_{-0.25}\ \rm{arcsec}$, corresponding $r= 9.8^{+3.3}_{-2.1}\ \rm{kpc}$ accounting for beam-convolution), confirming J1148+5251 is quasar with largest [CII]-emitting has...
We examine the behaviour of infrared-radio correlation (IRRC) over range 0 <z ≲ 6 using new, highly sensitive 3 GHz observations with Karl G. Jansky Very Large Array (VLA) and infrared data from Herschel Space Observatory in 2 deg2 COSMOS field. distinguish between objects where emission is believed to arise solely star-formation, those an active galactic nucleus (AGN) thought be present. account for non-detections radio or a doubly-censored survival analysis. find that IRRC star-forming...
We use ALMA observations of the host galaxy quasar ULAS-J1342+0928 at z=7.54 to study dust continuum and far infrared lines emitted from its interstellar medium. The Rayleigh-Jeans tail is well sampled with eight different spectral setups, a modified black body fit we obtain an emissivity coefficient beta=1.85+-0.3. Assuming standard temperature 47 K derive mass Mdust=0.35x10^8 Msol star formation rate 150+-30 Msol/yr. have >4sigma detections [CII]_158, [OIII]_88 [NII]_122 atomic fine...
Abstract We use the results from ALMA large program ASPECS, spectroscopic survey in Hubble Ultra Deep Field (HUDF), to constrain CO luminosity functions of galaxies and resulting redshift evolution ρ (H 2 ). The broad frequency range covered enables us identify emission lines different rotational transitions HUDF at z > 1. find strong evidence that function evolves with redshift, knee decreasing by an order magnitude ∼2 local universe. Based on Schechter fits, we estimate our observations...
We determine the physical properties of a sample SMGs in COSMOS field that were pre-selected at observed wavelength $λ_{\rm obs}=1.1$ mm, and followed up obs}=1.3$ mm with ALMA. used MAGPHYS to fit panchromatic (ultraviolet radio) SEDs 124 target SMGs, 19.4% which are spectroscopically confirmed. The SED analysis was complemented by estimating gas masses using emission as tracer molecular gas. median 16th-84th percentile ranges stellar masses, SFRs, dust temperatures, derived be...
We report high spatial resolution (~0.076", 410pc) Atacama Large Millimeter/submillimeter Array imaging of the dust continuum and ionized carbon line [CII] in a luminous quasar host galaxy at z=6.6, 800 million years after big bang. Based on previous studies, this hosts ~1x10^9 M_sun black hole has star-formation rate ~1500 M_sun/yr. The unprecedented observations reveals complex morphology gas within 3kpc accreting central hole. velocity dispersion with little ordered motion along sight, as...
Abstract We present the results from 1.2 mm continuum image obtained as part of Atacama Large Millimeter/submillimeter Array Spectroscopic Survey in Hubble Ultra Deep Field. The has a size 2.9 (4.2) arcmin 2 within primary beam response 50% (10%) and an rms value <?CDATA $9.3\,\mu \mathrm{Jy}\,{\mathrm{beam}}^{-1}$?> . detect 35 sources at high significance (Fidelity ≥0.5); 32 have well-characterized near-infrared Space Telescope counterparts. estimate number counts to flux levels $\lt...
We explore the multiwavelength properties of AGN host galaxies for different classes radio-selected out to z$\lesssim$6 via a analysis about 7700 radio sources in COSMOS field. The were selected with Very Large Array (VLA) at 3 GHz (10 cm) within VLA-COSMOS Project, and cross-matched ancillary data. This is largest sample high-redshift (z$\lesssim$6) exquisite photometric coverage redshift measurements available. constructed moderate-to-high radiative luminosity (HLAGN) spectral energy...
We present a characterization of the physical properties sample 35 securely-detected, dusty galaxies in deep ALMA 1.2-mm image obtained as part Spectroscopic Survey {\it Hubble} Ultra Deep Field (ASPECS) Large Program. This is complemented by 26 additional sources identified via an optical/infrared source positional prior. Using their well-characterized spectral energy distributions, we derive median stellar masses and star formation rates (SFR) $4.8\times10^{10}~M_\odot$ 30 $M_\odot$...
We report on ≈035 (≈2kpc) resolution observations of the [C ii] and dust continuum emission from five z > 6 quasar host–companion galaxy pairs obtained with Atacama Large Millimeter/submillimeter Array. The is resolved in all galaxies, physical extents 3.2–5.4 kpc. on-average 40% more compact, which results larger deficits center galaxies. However, measured are fully consistent those found at lower redshifts. Four galaxies show velocity fields that ordered rotation, while remaining six no...
Abstract Using the deepest 1.2 mm continuum map to date in Hubble Ultra Deep Field, which was obtained as part of ALMA Spectroscopic Survey (ASPECS) large program, we measure cosmic density dust and implied gas (H 2 +H i ) mass galaxies a function look-back time. We do so by stacking contribution from all H -band selected above given stellar distinct redshift bins, <?CDATA ${\rho }_{\mathrm{dust}}({M}_{* }\gt M,z)$?> }_{\mathrm{gas}}({M}_{* . At redshifts, grow rapidly M decreases down 10 ⊙...
We study the interstellar medium in a sample of 27 high-redshift quasar host galaxies at z>6, using [CII] 158um emission line and underlying dust continuum observed ~1kpc resolution with ALMA. By performing uv-plane spectral stacking both high low spatial data, we investigate velocity extent gas, size dust-emitting regions. find that average surface brightness profile can be described by steep component within radius 2kpc, shallower scale length detected up to ~10kpc. The extended drops...
We present a multi-line survey of the interstellar medium (ISM) in two $z>6$ quasar (QSO) host galaxies, PJ231-20 ($z=6.59$) and PJ308-21 ($z=6.23$), their companion galaxies. Observations were carried out using Atacama Large (sub-)Millimeter Array (ALMA). targeted eleven transitions including atomic fine structure lines (FSLs) molecular lines: [NII]$_{\rm 205\mu m}$, [CI]$_{\rm 369\mu CO ($J_{\rm up} = 7, 10, 15, 16$), H$_2$O $3_{12}-2_{21}$, $3_{21}-3_{12}$, $3_{03}-2_{12}$, OH$_{\rm...
Based on a sample of over 1800 radio AGN at redshifts out to z ~ 5, which have typical stellar masses within ~3 × (1010 − 1011)M⊙, and 3 GHz data in the COSMOS field, we derived 1.4 luminosity functions for (L1.4 GHz~ 1022 1027 W Hz-1) 5. We constrained evolution this population via continuous models pure density evolutions, found best-fit parametrizations Φ∗ ∝ (1 + z)(2.00 ± 0.18) (0.60 0.14)z, L∗ z)(2.88 0.82) (0.84 0.34)z, respectively, with turnover number densities ≈ 1.5. converted...
We study the physical properties of a sample 6 SMGs in COSMOS field, spectroscopically confirmed to lie at z>4. use new GMRT 325 MHz and 3 GHz JVLA data probe rest-frame 1.4 emission z=4, estimate sizes star-forming (SF) regions these sources, resp. Combining our size estimates with those available literature for AzTEC1 AzTEC3 we infer median radio-emitting z>4 (0.63"+/-0.12")x(0.35"+/-0.05") or 4.1x2.3 kpc^2 (major times minor axis; assuming z=4.5) lower if take two marginally resolved as...
We present IRAM/NOEMA, JCMT/SCUBA-2 and VLA observations of the most distant known gravitationally lensed quasar J0439+1634 at z = 6.5. detect strong dust emission, [CII] 158 $\mu$m, [CI] 369 [OI] 146 CO(6-5), CO(7-6), CO(9-8), CO(10-9), H$_{\rm 2}$O $3_{\rm 1,2}-2_{\rm 2,1}$, 2,1}-3_{\rm 1,2}$ lines as well a weak radio continuum. The line yields systemic redshift host galaxy to be z=6.5188$\pm$0.0001. magnification makes far-infrared (FIR) brightest > 6 known, with yet detected this...