A5039407000- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
- Scientific Research and Discoveries
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Spectroscopy and Chemometric Analyses
- Adaptive optics and wavefront sensing
- Respiratory Support and Mechanisms
- Calibration and Measurement Techniques
- Plant Water Relations and Carbon Dynamics
- Optical Wireless Communication Technologies
- Neutrino Physics Research
- Remote Sensing in Agriculture
- Photonic and Optical Devices
- Medical Imaging and Pathology Studies
- Obstructive Sleep Apnea Research
- History and Developments in Astronomy
- Advanced optical system design
- COVID-19 Clinical Research Studies
Ospedale generale di zona San Camillo Treviso
2015-2025
National Institute for Astrophysics
2014-2024
University College London
2024
University of Copenhagen
2024
Flatiron Health (United States)
2024
Flatiron Institute
2024
Royal Holloway University of London
2024
University of California, Davis
2024
New York University
2024
Princeton University
2024
We have studied the properties of giant star-forming clumps in five z ∼ 2 disks with deep SINFONI AO spectroscopy at ESO VLT. The reside disk regions where Toomre Q-parameter is below unity, consistent their being bound and having formed from gravitational instability. Broad Hα/[N ii] line wings demonstrate that are launching sites powerful outflows. inferred outflow rates comparable to or exceed star formation rates, one case by a factor eight. Typical may lose fraction original gas...
We present the serendipitous discovery of molecular gas CO emission lines with IRAM Plateau de Bure interferometer coincident two luminous submillimeter galaxies (SMGs) in Great Observatories Origins Deep Survey North (GOODS-N) field. The identification millimeter as CO[4–3] at z = 4.05 is based on optical and near-IR photometric redshifts, radio-infrared Keck+DEIMOS spectroscopy. These include brightest source field (GN20; S850 μm 20.3 mJy, zCO 4.055 ± 0.001) its companion (GN20.2; 9.9...
Most present-day galaxies with stellar masses $\geq10^{11}$ solar show no ongoing star formation and are dense spheroids. Ten billion years ago, similarly massive were typically forming stars at rates of hundreds per year. It is debated how ceased, on which timescales, this "quenching" relates to the emergence We measured mass star-formation rate surface density distributions in star-forming redshift 2.2 $\sim1$ kiloparsec resolution. find that, most galaxies, quenched from inside out,...
In this paper we follow up on our previous detection of nuclear ionized outflows in the most massive (log(M*/Msun) >= 10.9) z~1-3 star-forming galaxies (Forster Schreiber et al.), by increasing sample size a factor six (to 44 above log(M*/Msun) from combination SINS/zC-SINF, LUCI, GNIRS, and KMOS^3D spectroscopic surveys. We find fairly sharp onset incidence broad emission (FWHM Ha, [NII], [SII] lines ~ 450-5300 km/s), with large [NII]/Ha ratios, 10.9, about two thirds mass range exhibiting...
The ALMA-ALPINE [CII] survey is aimed at characterizing the properties of a sample normal star-forming galaxies (SFGs). ALMA Large Program to INvestigate (ALPINE) features 118 observed in [CII]-158$μ$m line and far infrared (FIR) continuum emission during period rapid mass assembly, right after end HI reionization, redshifts 45). Based on visual inspection data cubes together with large wealth ancillary data, we find surprisingly wide range galaxy types, including 40% that are mergers, 20%...
(abridged) We present a new near-infrared survey covering the 2 deg sq COSMOS field. Combining our with Subaru B and z images we construct deep, wide-field optical-infrared catalogue. At Ks<23 (AB magnitudes) completeness is greater than 90% 70% for stars galaxies respectively contains 143,466 13,254 stars. z~2 catalogues contain 3931 quiescent 25,757 star-forming BzK-selected representing largest most secure sample of these objects to date. Our counts turns over at Ks~22 an effect which...
We exploit deep observations of the GOODS-N field taken with PACS, on board Herschel, as part PEP guaranteed time, to study link between star formation and stellar mass in galaxies z~2. Starting from a mass-selected sample ~4500 mag[4.5mu]<23 (AB), we identify ~350 objects PACS detection at 100 or 160mu ~1500 only Spitzer 24 mu counterpart. Stellar masses total IR luminosities (LIR) are estimated by fitting SEDs. Consistently other Herschel results, find that LIR based data is overestimated...
Using SINFONI Hα, [N ii], and [S ii] AO data of 27 z ∼ 2 star-forming galaxies (SFGs) from the SINS zC-SINF surveys, we explore dependence outflow strength (via broad flux fraction) on various galaxy parameters. For that have evidence for strong outflows, find emission is spatially extended to at least half-light radius (∼a few kpc). Decomposition doublet into narrow components suggests this outflowing gas probably has a density ∼10–100 cm−3, less than (600 cm−3). There correlation Hα...
[Abridged]We exploit a large homogeneous dataset to derive self-consistent picture of IR emission based on the time-dependent 24, 15, 12 and 8micron monochromatic bolometric luminosity functions (LF) over 0<z<2.5 redshift range. Our analysis is combination data from deep Spitzer surveys in VVDS-SWIRE GOODS areas. To our limiting flux S(24)=400microJy derived sample includes 1494 sources, 666 904 sources brighter than S(24)=80microJy are catalogued GOODS-S GOODS-N, respectively, for total...
As part of the SINS/zC-SINF surveys high-z galaxy kinematics, we derive radial distributions Hα surface brightness, stellar mass density, and dynamical at ∼2 kpc resolution in 19 z ∼ 2 star-forming disks with deep SINFONI adaptive optics spectroscopy ESO Very Large Telescope. From these data infer distribution Toomre Q-parameter for main-sequence galaxies (SFGs), covering almost two decades (109.6–1011.5 M☉). In more than half our SFGs, cannot be fit by a centrally peaked distribution, such...
We report the detection of ubiquitous powerful nuclear outflows in massive (> 10^11 Msun) z~2 star-forming galaxies (SFGs), which are plausibly driven by an Active Galactic Nucleus (AGN). The sample consists eight most SFGs from our SINS/zC-SINF survey galaxy kinematics with imaging spectrometer SINFONI, six have sensitive high-resolution adaptive optics (AO) assisted observations. All objects disks hosting a significant stellar bulge. spectra their central regions exhibit broad component...
We compare various star formation rate (SFR) indicators for star-forming galaxies at $1.4<z<2.5$ in the COSMOS field. The main focus is on SFRs from far-IR (PACS-Herschel data) with those ultraviolet, selected according to BzK criterion. FIR-selected samples lead a vastly different slope of SFR-stellar mass ($M_*$) relation, compared that dominant sequence population as measured UV, since FIR selection picks predominantly only minority outliers. However, there overall agreement between...
We present the results of new near-IR spectroscopic observations passive galaxies at z ≳ 1.4 in a concentration BzK-selected COSMOS field. The have been conducted with Subaru/MOIRCS, and resulted absorption lines and/or continuum detection for 18 out 34 objects. This allows us to measure redshifts sample that is almost complete KAB = 21. photometric are found fair agreement overall redshifts, standard deviation ∼0.05; however, ∼30% objects systematically underestimated by up ∼25%. show these...
We investigate the stellar population properties of a sample 24 massive quenched galaxies at identified in COSMOS field with our Subaru/Multi-object Infrared Camera and Spectrograph near-IR spectroscopic observations. Tracing as close to their major formation epoch possible, we try put constraints on star history, post-quenching evolution, possible progenitor star-forming populations for such galaxies. By using set Lick absorption line indices rest-frame optical composite spectrum, average...
Local starbursts have a higher efficiency of converting gas into stars, as compared to typical star-forming galaxies at given stellar mass, possibly indicative different modes star formation. With the peak epoch galaxy formation occurring z > 1, it remains be established whether such an efficient mode is high redshift. To address this issue, we measure molecular content seven high-redshift (z ∼ 1.6) starburst with Atacama Large Millimeter/submillimeter Array and IRAM/Plateau de Bure...
We present the correlations between stellar mass, star formation rate (SFR) and [NII]/Ha flux ratio as indicator of gas-phase metallicity for a sample 222 galaxies at 0.8 < z 2.6 log(M*/Msun)=9.0-11.5 from LUCI, SINS/zC-SINF KMOS3D surveys. This provides unique analysis mass-metallicity relation (MZR) over an extended redshift range using consistent data techniques strong-line indicator. find constant slope low-mass end can fully describe its evolution through characteristic turnover mass...
By using a set of different SFR indicators, including WISE mid-infrared and Halpha emission, we study the slope Main Sequence (MS) local star forming galaxies at stellar masses larger than 10^{10} M_{\odot}. The relation strongly depends on indicator used. In all cases, MS shows bending high with respect to obtained in low mass regime. While distribution upper envelope is consistent log-normal distribution, lower an excess galaxies, which increases as function but varies scatter best from...
Abstract We investigate the relationship between star formation activity and outflow properties on kiloparsec scales in a sample of 28 star-forming galaxies at z ∼ 2–2.6, using adaptive optics assisted integral field observations from SINFONI Very Large Telescope. The narrow broad components H α emission are used to simultaneously determine local rate surface density ( <?CDATA ${{\rm{\Sigma }}}_{\mathrm{SFR}}$?> ), velocity ${v}_{\mathrm{out}}$?> mass ${\dot{M}}_{\mathrm{out}}$?> ,...
We investigate the properties of 12 ultra-massive passively evolving early type galaxies (ETGs) at z_phot>1.4 in COSMOS 2 deg^2 field. These ETGs were selected as pBzKs, have accurate 1.4<= z_phot <=1.7,high Sersic index profiles typical ellipticals, no detection 24 micron, resulting a complete ETG sample M*>2.5x10^11 M_sun (Chabrier IMF). Contrary to previous claims, half light radii estimated very high S/N imaging data from HST+ACS are found be large for most sample, consistent with local...
The zCOSMOS–SINFONI project is aimed at studying the physical and kinematical properties of a sample massive z ∼ 1.4–2.5 star-forming galaxies, through SINFONI near-infrared integral field spectroscopy (IFS), combined with multiwavelength information from zCOSMOS (COSMOS) survey. based on one hour natural-seeing observations per target, adaptive optics (AO) follow-up for major part sample, which includes 30 galaxies selected zCOSMOS/VIMOS spectroscopic This first paper presents selection,...
We have obtained high-resolution data of the z ∼ 2 ring-like, clumpy star-forming galaxy (SFG) ZC406690 using VLT/SINFONI with adaptive optics (in K band) and in seeing-limited mode H J bands). Our include all main strong optical emission lines: [O ii], iii], Hα, Hβ, [N [S ii]. find broad, blueshifted Hα iii] line wings spectra galaxy's massive, clumps (σ 85 km s−1) even broader (up to 70% total flux, σ 290 regions spatially offset from by ∼2 kpc. The broad likely originates large-scale...
We analyze the spectra, spatial distributions, and kinematics of Hα, [N ii], [S ii] emission in a sample 38, z ∼ 2.2 UV/optically selected star-forming galaxies (SFGs) from SINS zC-SINF surveys, 34 which were observed adaptive optics mode SINFONI 30 those contain data presented for first time here. This is supplemented by kinematic 43 1–2.5 literature. None these 81 an obvious major merger. find that classification high-z SFGs as "dispersion dominated" or "rotation correlates most strongly...
We present the "SINS/zC-SINF AO survey" of 35 star-forming galaxies, largest sample with deep adaptive optics-assisted (AO) near-infrared integral field spectroscopy at z~2. The observations, taken SINFONI Very Large Telescope, resolve Ha and [NII] line emission kinematics on scales ~1.5 kpc. In stellar mass, star formation rate, rest-optical colors size, is representative its parent seeing-limited probes massive (M* ~ 2x10^9 - 3x10^11 Msun), actively (SFR 10-600 Msun/yr) part z~2 galaxy...
We present the analysis of Hubble Space Telescope (HST) J- and H-band imaging for 29 galaxies on star-forming main sequence at z ∼ 2, which have adaptive optics Very Large SINFONI integral field spectroscopy from our SINS/zC-SINF program. The Hα data resolve ongoing star formation ionized gas kinematics scales 1–2 kpc; near-IR images trace galaxies' rest-frame optical morphologies distributions stellar mass in old populations a similar resolution. global light profiles most show disk-like...
We derive two-dimensional dust attenuation maps at $\sim1~\mathrm{kpc}$ resolution from the UV continuum for ten galaxies on $z\sim2$ Star-Forming Main Sequence (SFMS). Comparison with IR data shows that 9 out of 10 do not require further obscuration in addition to UV-based correction, though our sample does include most heavily obscured, massive galaxies. The individual rest-frame $V$-band (A$_{\rm V}$) radial profiles scatter around an average profile gently decreases $\sim1.8$ mag center...