H. Dannerbauer
A5073786396- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Spectroscopy and Laser Applications
- Superconducting and THz Device Technology
- Cosmology and Gravitation Theories
- Adaptive optics and wavefront sensing
- Scientific Research and Discoveries
- Calibration and Measurement Techniques
- Plant Water Relations and Carbon Dynamics
- Gas Dynamics and Kinetic Theory
- CCD and CMOS Imaging Sensors
- Geophysics and Gravity Measurements
- Atomic and Subatomic Physics Research
- Insect and Arachnid Ecology and Behavior
- Photoreceptor and optogenetics research
- Solar and Space Plasma Dynamics
- Particle Accelerators and Free-Electron Lasers
- Photocathodes and Microchannel Plates
Instituto de Astrofísica de Canarias
2016-2025
Universidad de La Laguna
2016-2025
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 present the deepest 100 to 500 μm far-infrared observations obtained with Herschel Space Observatory as part of GOODS-Herschel key program, and examine infrared (IR) 3–500 spectral energy distributions (SEDs) galaxies at 0 < z 2.5, supplemented by a local reference sample from IRAS, ISO, Spitzer, AKARI data. determine projected star formation densities their radio mid-IR continuum sizes.
We present evidence for very high gas fractions and extended molecular reservoirs in normal, near-infrared selected (BzK) galaxies at z~1.5, based on multi-configuration CO[2-1] observations obtained the IRAM PdBI. Six of six observed were securely detected. High resolution resolve CO emission four them, implying sizes order 6-11 kpc suggesting presence rotation. The UV morphologies are consistent with clumpy, unstable disks, sizes. star formation efficiencies homogeneously low similar to...
We present evidence that bona fide disks and starburst systems occupy distinct regions in the gas mass versus star formation rate (SFR) plane, both for integrated quantities respective surface densities. This result is based on carbon monoxide (CO) observations of galaxy populations at low high redshifts, current consensus CO luminosity to conversion factors. The data suggest existence two different SF regimes: a long-lasting mode more rapid starbursts, latter probably occurring during major...
Using data from the mid-infrared to millimeter wavelengths for individual galaxies and stacked ensembles at 0.5 < z 2, we derive robust estimates of dust masses (Mdust) main-sequence (MS) galaxies, which obey a tight correlation between star formation rate (SFR) stellar mass (M*), starbursting that fall outside relation. Exploiting gas-to-dust with metallicity (Mgas/Mdust–Z), use our measurements constrain gas content, CO-to-H2 conversion factors (αCO), efficiencies (SFE) these distant...
The Herschel ATLAS is the largest open-time key project that will be carried out on Space Observatory. It survey 510 square degrees of extragalactic sky, four times larger than all other surveys combined, in five far-infrared and submillimetre bands. We describe survey, complementary multi-wavelength datasets combined with data, six major science programmes we are undertaking. Using new models based a previous galaxies, present predictions properties sources wavebands.
The ALESS survey has followed up on a sample of 122 sub-millimeter sources in the Extended Chandra Deep Field South at 870 μm with Atacama Large Millimeter Array (ALMA), allowing us to pinpoint positions galaxies (SMGs) ∼0.3 arcsec and find their precise counterparts different wavelengths. This enabled first compilation multi-wavelength spectral energy distributions (SEDs) statistically reliable SMGs. In this paper, we present new calibration magphys SED modeling code that is optimized fit...
Gravitational lensing is a powerful astrophysical and cosmological probe particularly valuable at submillimeter wavelengths for the study of statistical individual properties dusty starforming galaxies. However identification gravitational lenses often time-intensive, involving sifting large volumes imaging or spectroscopic data to find few candidates. We used early from Herschel Astrophysical Terahertz Large Area Survey demonstrate that wide-area surveys can simply easily detect strong...
We present a sensitive 870 micron survey of the Extended Chandra Deep Field South (ECDFS) using LABOCA on APEX telescope. The ECDFS Submillimetre Survey (LESS) covers full 30' x field size and has uniform noise level 1.2 mJy/beam. LESS is thus largest contiguous deep submillimetre undertaken to date. properties our map show clear evidence that we are beginning be affected by confusion noise. catalog 126 SMGs detected with significance above 3.7 sigma. exhibits deficit bright relative...
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...
We exploit ALMA 870um (345GHz) observations of submillimetre sources in the Extended Chandra Deep Field South to investigate far-infrared properties high-redshift galaxies (SMGs). Using precisely located positions 99 SMGs, together with 24um and radio imaging this field, we deblend Herschel/SPIRE region extract their fluxes colours. The median photometric redshifts for LESS (ALESS) SMGs which are detected at least two SPIRE bands increases wavelength peak SEDs, z=2.3+/-0.2, 2.5+/-0.3...
We study a sample of 61 submillimetre galaxies (SMGs) selected from ground-based surveys, with known spectroscopic redshifts and observed Herschel as part the PACS Evolutionary Probe (PEP) Multi-tiered Extragalactic Survey (HerMES) key programmes. use broad far-infrared wavelength coverage (100-600um) provided by combination SPIRE observations. Using power-law temperature distribution model to derive infrared luminosities dust temperatures, we measure emissivity spectral index for SMGs...
We report the first counts of faint submillimetre galaxies (SMG) in 870-um band derived from arcsecond resolution observations with Atacama Large Millimeter Array (ALMA). have used ALMA to map a sample 122 870-um-selected sources drawn (0.5x0.5)deg^2 LABOCA Extended Chandra Deep Field South Submillimetre Survey (LESS). These maps an average depth sigma(870um)~0.4mJy, some ~3x deeper than original survey and critically angular is more order magnitude higher, FWHM ~1.5" compared ~19" for...
We present high-resolution (0.16$"$) 870um Atacama Large Millimeter/submillimeter Array (ALMA) imaging of 16 luminous (L_IR ~ 4 x 10^12 L_sun) submillimeter galaxies (SMGs) from the ALESS survey Extended Chandra Deep Field South. This dust traces dust-obscured star formation in these z~2.5 on ~1.3 kpc scales. The emission has a median effective radius $R_e=0.24" \pm 0.02"$, corresponding to typical physical size $R_{e}=1.8\pm$0.2 kpc. derive S\'ersic index $n=0.9\pm0.2$, implying that is...
This paper describes the third public data release (DR3) of Calar Alto Legacy Integral Field Area (CALIFA) survey. Science-grade quality for 667 galaxies are made public, including 200 second (DR2). Data were obtained with integral-field spectrograph PMAS/PPak mounted on 3.5 m telescope at Observatory. Three different spectral setups available: i) a low-resolution V500 setup covering wavelength range 3745–7500 Å (4240–7140 unvignetted) resolution 6.0 (FWHM) 646 galaxies, ii)...
We present an Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 0 survey of 126 submillimeter sources from the LABOCA ECDFS Submillimeter Survey (LESS). Our 870 micron with ALMA (ALESS) has produced maps ~3X deeper and a beam area ~200X smaller than original LESS observations, doubling current number interferometrically-observed sources. The high resolution these allows us to resolve that were previously blended accurately identify origin emission. discuss creation ALESS galaxy (SMG)...
We present the first photometric redshift distribution for a large sample of 870 μm submillimeter galaxies (SMGs) with robust identifications based on observations ALMA. In our analysis we consider 96 SMGs in Extended Chandra Deep Field South, 77 which have 4–19 band photometry. model SEDs these SMGs, deriving median zphot = 2.3 ± 0.1. The remaining 19 insufficient photometry to derive redshifts, but stacking Herschel confirms they are not spurious. Assuming that an absolute H-band magnitude...
We report the identification of an extreme proto-cluster galaxies in early Universe whose core (nicknamed Distant Red Core, DRC) is formed by at least ten dusty star-forming (DSFGs), confirmed to lie $z_{\rm spec} = 4.002$ via detection [CI](1-0), $^{12}$CO(6-5), $^{12}$CO(4-3), $^{12}$CO(2-1) and ${\rm H_2O} (2_{11} - 2_{02})$ emission lines, detected using ALMA ATCA. The spectroscopically-confirmed components are distributed over a 260\, kpc \times 310\, kpc}$ region have collective...
Abstract We report the detection of a 13σ Hα emission line from HDF850.1 at z = 5.188 ± 0.001 using FRESCO NIRCam F444W grism observations. Detection in is noteworthy, given its high far-IR luminosity, substantial dust obscuration, and historical challenges deriving redshift. shows clear imaging data, distributed between northern southern component, mirroring that seen [CII] Plateau de Bure Interferometer. Modeling SED each component separately, we find has higher mass, star formation rate...
Abstract We present JWST NIRCam imaging targeting 13 z ~ 3 infrared-luminous ( L IR ∼ 5 × 10 12 ⊙ ) galaxies from the ALESS survey with uniquely deep, high-resolution (0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover> <mml:mrow> <mml:mo>.</mml:mo> </mml:mrow> <mml:mtext>″</mml:mtext> </mml:mover> </mml:math> 08–0 <mml:mo accent="false">″</mml:mo> 16) Atacama Large Millimeter/submillimeter Array 870 μ m imaging. The 2.0–4.4 (observed frame) reveals...
We take advantage of the sensitivity and resolution Herschel Space Observatory at 100 160 μm to directly image thermal dust emission investigate infrared luminosities (LIR) obscuration typical star-forming (L*) galaxies high redshift. Our sample consists 146 UV-selected with spectroscopic redshifts 1.5 ⩽ zspec < 2.6 in GOODS-North field. Supplemented deep Very Large Array Spitzer imaging, we construct median stacks positions these 24, 100, μm, 1.4 GHz. The comparison between stacked fluxes a...
We present a study of the infrared properties X-ray selected, moderate-luminosity (i.e. LX= 1042–1044 erg s−1) active galactic nuclei (AGNs) up to z ≈ 3, in order explore links between star formation galaxies and accretion on their central black holes. use 100 160 μ m fluxes from GOODS-Herschel – deepest survey yet undertaken by Herschel telescope show that vast majority cases >94 per cent) these are dominated emission host galaxy. As such, far-infrared bands provide an uncontaminated view...
We present the first detection of molecular gas cooling CO emission lines from ordinary massive galaxies at z = 1.5. Two sources were observed with IRAM Plateau de Bure Interferometer, selected to lie in mass-star formation rate correlation their redshift, thus being representative high-z galaxies. Both detected high confidence, yielding L'CO ∼ 2 × 1010 K km s−1 pc2. For one we find evidence velocity shear, implying sizes ~10 kpc. With an infrared luminosity LFIR 1012 L☉, these disklike are...
Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub-)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South Multiple Mirror Telescope optical spectroscopy of strong lens candidates the two widest extragalactic conducted by Herschel Space Observatory: Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) Multi-tiered Extragalactic (HerMES). From a sample 30 sources with S500 > 100 mJy, 21...
We report ground-based follow-up observations of the exceptional source, ID141, one brightest sources detected so far in H-ATLAS cosmological survey. ID141 was observed using IRAM 30-meter telescope and Plateau de Bure interferometer (PdBI), Submillimeter Array (SMA) Atacama Pathfinder Experiment (APEX) submillimeter to measure dust continuum emission lines main isotope carbon monoxide ([C I] [C II]). The detection strong CO with PdBI confirms that is at high redshift (z=4.243 +/- 0.001)....