Publications
320 results found
Ade PAR, Aghanim N, Armitage-Caplan C, et al., 2014, Planck 2013 results. XVIII. The gravitational lensing-infrared background correlation, ASTRONOMY & ASTROPHYSICS, Vol: 571, ISSN: 1432-0746
The multi-frequency capability of the Planck satellite provides information both on the integrated history of star formation (via the cosmic infrared background, or CIB) and on the distribution of dark matter (via the lensing effect on the cosmic microwave background, or CMB). The conjunction of these two unique probes allows us to measure directly the connection between dark and luminous matter in the high redshift (1 ≤ z ≤ 3) Universe. We use a three-point statistic optimized to detect the correlation between these two tracers, using lens reconstructions at 100, 143, and 217 GHz, together with CIB measurements at 100–857 GHz. Following a thorough discussion of possible contaminants and a suite of consistency tests, we report the first detection of the correlation between the CIB and CMB lensing. The well matched redshift distribution of these two signals leads to a detection significance with a peak value of 42/19σ (statistical/statistical + systematics) at 545 GHz and a correlation as high as 80% across these two tracers. Our full set of multi-frequency measurements (both CIB auto- and CIB-lensing cross-spectra) are consistent with a simple halo-based model, with a characteristic mass scale for the halos hosting CIB sources of log10(M/M⊙) = 10.5 ± 0.6. Leveraging the frequency dependence of our signal, we isolate the high redshift contribution to the CIB, and constrain the star formation rate (SFR) density at z ≥ 1. We measure directly the SFR density with around 2σ significance for three redshift bins between z = 1 and 7, thus opening a new window into the study of the formation of stars at early times.
Ade PAR, Aghanim N, Armitage-Caplan C, et al., 2014, Planck 2013 results. XIX. The integrated Sachs-Wolfe effect, Astronomy and Astrophysics, Vol: 571, ISSN: 0004-6361
Based on cosmic microwave background (CMB) maps from the 2013 Planck Mission data release, this paper presents the detection of the integrated Sachs-Wolfe (ISW) effect, that is, the correlation between the CMB and large-scale evolving gravitational potentials. The significance of detection ranges from 2 to 4σ, depending on which method is used. We investigated three separate approaches, which essentially cover all previous studies, and also break new ground. (i) We correlated the CMB with the Planck reconstructed gravitational lensing potential (for the first time). This detection was made using the lensing-induced bispectrum between the low-ℓ and high-ℓ temperature anisotropies; the correlation between lensing and the ISW effect has a significance close to 2.5σ. (ii) We cross-correlated with tracers of large-scale structure, which yielded a significance of about 3σ, based on a combination of radio (NVSS) and optical (SDSS) data. (iii) We used aperture photometry on stacked CMB fields at the locations of known large-scale structures, which yielded and confirms a 4σ signal, over a broader spectral range, when using a previously explored catalogue, but shows strong discrepancies in amplitude and scale when compared with expectations. More recent catalogues give more moderate results that range from negligible to 2.5σ at most, but have a more consistent scale and amplitude, the latter being still slightly higher than what is expected from numerical simulations within ΛCMD. Where they can be compared, these measurements are compatible with previous work using data from WMAP, where these scales have been mapped to the limits of cosmic variance. Planck’s broader frequency coverage allows for better foreground cleaning and confirms that the signal is achromatic, which makes it preferable for ISW detection. As a final step we used tracers of large-scale structure to filter the CMB data, from which we present maps of the ISW tempera
Ade PAR, Aghanim N, Armitage-Caplan C, et al., 2014, Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts, ASTRONOMY & ASTROPHYSICS, Vol: 571, ISSN: 1432-0746
We present constraints on cosmological parameters using number counts as a function of redshift for a sub-sample of 189 galaxy clusters from the Planck SZ (PSZ) catalogue. The PSZ is selected through the signature of the Sunyaev-Zeldovich (SZ) effect, and the sub-sample used here has a signal-to-noise threshold of seven, with each object confirmed as a cluster and all but one with a redshift estimate. We discuss the completeness of the sample and our construction of a likelihood analysis. Using a relation between mass M and SZ signal Y calibrated to X-ray measurements, we derive constraints on the power spectrum amplitude σ8 and matter density parameter Ωm in a flat ΛCDM model. We test the robustness of our estimates and find that possible biases in the Y–M relation and the halo mass function are larger than the statistical uncertainties from the cluster sample. Assuming the X-ray determined mass to be biased low relative to the true mass by between zero and 30%, motivated by comparison of the observed mass scaling relations to those from a set of numerical simulations, we find that σ8 = 0.75 ± 0.03, Ωm = 0.29 ± 0.02, and σ8(Ωm/ 0.27)0.3 = 0.764 ± 0.025. The value of σ8 is degenerate with the mass bias; if the latter is fixed to a value of 20% (the central value from numerical simulations) we find σ8(Ωm/0.27)0.3 = 0.78 ± 0.01 and a tighter one-dimensional range σ8 = 0.77 ± 0.02. We find that the larger values of σ8 and Ωm preferred by Planck’s measurements of the primary CMB anisotropies can be accommodated by a mass bias of about 40%. Alternatively, consistency with the primary CMB constraints can be achieved by inclusion of processes that suppress power on small scales relative to the ΛCDM model, such as a component of massive neutrinos. We place our results in the context of other determinations of cosmologicalparameters, and discus
Abergel A, Ade PAR, Aghanim N, et al., 2014, <i>Planck</i> 2013 results. XI. All-sky model of thermal dust emission, ASTRONOMY & ASTROPHYSICS, Vol: 571, ISSN: 0004-6361
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- Citations: 469
Ade PAR, Aghanim N, Armitage-Caplan C, et al., 2014, <i>Planck</i> 2013 results. XXX. Cosmic infrared background measurements and implications for star formation, ASTRONOMY & ASTROPHYSICS, Vol: 571, ISSN: 0004-6361
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- Citations: 148
Ade PAR, Aghanim N, Armitage-Caplan C, et al., 2014, Planck 2013 results. XXII. Constraints on inflation, Astronomy and Astrophysics, Vol: 571, Pages: 1-43, ISSN: 1432-0746
We analyse the implications of the Planck data for cosmic inflation. The Planck nominal mission temperature anisotropy measurements, combinedwith the WMAP large-angle polarization, constrain the scalar spectral index to be ns = 0.9603 ± 0.0073, ruling out exact scale invariance atover 5σ. Planck establishes an upper bound on the tensor-to-scalar ratio of r < 0.11 (95% CL). The Planck data thus shrink the space of allowedstandard inflationary models, preferring potentials with V00 < 0. Exponential potential models, the simplest hybrid inflationary models, andmonomial potential models of degree n ≥ 2 do not provide a good fit to the data. Planck does not find statistically significant running of thescalar spectral index, obtaining dns/dln k = −0.0134 ± 0.0090. We verify these conclusions through a numerical analysis, which makes no slowrollapproximation, and carry out a Bayesian parameter estimation and model-selection analysis for a number of inflationary models includingmonomial, natural, and hilltop potentials. For each model, we present the Planck constraints on the parameters of the potential and exploreseveral possibilities for the post-inflationary entropy generation epoch, thus obtaining nontrivial data-driven constraints. We also present a directreconstruction of the observable range of the inflaton potential. Unless a quartic term is allowed in the potential, we find results consistent withsecond-order slow-roll predictions. We also investigate whether the primordial power spectrum contains any features. We find that models with aparameterized oscillatory feature improve the fit by ∆χ2eff ≈ 10; however, Bayesian evidence does not prefer these models. We constrain severalsingle-field inflation models with generalized Lagrangians by combining power spectrum data with Planck bounds on fNL. Planck constrains withunprecedented accuracy the amplitude and possible correlation (with the adiabatic mode) of non-decaying iso
Ade PAR, Aghanim N, Alves MIR, et al., 2014, Planck 2013 results. I. Overview of products and scientific results, Astronomy & Astrophysics, Vol: 571, ISSN: 1432-0746
The European Space Agency’s Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 and has been scanning the microwave and submillimetre sky continuously since 12 August 2009. In March 2013, ESA and the Planck Collaboration released the initial cosmology products based on the first 15.5 months of Planck data, along with a set of scientific and technical papers and a web-based explanatory supplement. This paper gives an overview of the mission and its performance, the processing, analysis, and characteristics of the data, the scientific results, and the science data products and papers in the release. The science products include maps of the cosmic microwave background (CMB) and diffuse extragalactic foregrounds, a catalogue of compact Galactic and extragalactic sources, and a list of sources detected through the Sunyaev-Zeldovich effect. The likelihood code used to assess cosmological models against the Planck data and a lensing likelihood are described. Scientific results include robust support for the standard six-parameter ΛCDM model of cosmology and improved measurements of its parameters, including a highly significant deviation from scale invariance of the primordial power spectrum. The Planck values for these parameters and others derived from them are significantly different from those previously determined. Several large-scale anomalies in the temperature distribution of the CMB, first detected by WMAP, are confirmed with higher confidence. Planck sets new limits on the number and mass of neutrinos, and has measured gravitational lensing of CMB anisotropies at greater than 25σ. Planck finds no evidence for non-Gaussianity in the CMB. Planck’s results agree well with results from the measurements of baryon acoustic oscillations. Planck finds a lower Hubble constant than found in some more local measures. Some tension is also present between the amplitude of matter fluc
Wang L, Rowan-Robinson M, Norberg P, et al., 2014, The Revised <i>IRAS</i>-FSC Redshift Catalogue (RIFSCz), MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 442, Pages: 2739-2750, ISSN: 0035-8711
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- Citations: 25
Huang J-S, Rigopoulou D, Magdis G, et al., 2014, HerMES: SPECTRAL ENERGY DISTRIBUTIONS OF SUBMILLIMETER GALAXIES AT z > 4, ASTROPHYSICAL JOURNAL, Vol: 784, ISSN: 0004-637X
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- Citations: 26
Dowell CD, Conley A, Glenn J, et al., 2014, HerMES: Candidate high-redshift galaxies discovered with herschel/spire, The Astrophysical Journal: an international review of astronomy and astronomical physics, Vol: 780, ISSN: 0004-637X
We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 μm flux densities to search for red sources. We apply this method to 21 deg2 of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e.g., 850 μm) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S 500 μm ≥ 30 mJy), red Herschel sources is 3.3 ± 0.8 deg–2. This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z ~ 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction.
Efstathiou A, Pearson C, Farrah D, et al., 2014, <i>Herschel</i> observations and a model for IRAS 08572+3915: a candidate for the most luminous infrared galaxy in the local (z < 0.2) Universe, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 437, Pages: L16-L20, ISSN: 0035-8711
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- Citations: 28
Gruppioni C, Pozzi F, Rodighiero G, et al., 2013, The <i>Herschel</i> PEP/HerMES Luminosity Function - I. Probing the Evolution of PACS selected Galaxies to <i>z</i> ≃ 4 (vol 432, pg 23, 2013), MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 436, Pages: 2875-2876, ISSN: 0035-8711
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- Citations: 8
Viero MP, Wang L, Zemcov M, et al., 2013, HerMES: COSMIC INFRARED BACKGROUND ANISOTROPIES AND THE CLUSTERING OF DUSTY STAR-FORMING GALAXIES, ASTROPHYSICAL JOURNAL, Vol: 772, ISSN: 0004-637X
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- Citations: 125
Gruppioni C, Pozzi F, Rodighiero G, et al., 2013, The Herschel* PEP/HerMES luminosity function - I. Probing the evolution of PACS selected Galaxies to z ≃ 4, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 432, Pages: 23-52, ISSN: 0035-8711
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- Citations: 294
Wang L, Farrah D, Oliver SJ, et al., 2013, Connecting stellar mass and star-formation rate to dark matter halo mass out to <i>z</i> ∼ 2, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 431, Pages: 648-661, ISSN: 0035-8711
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- Citations: 69
Symeonidis M, Vaccari M, Berta S, et al., 2013, The <i>Herschel</i> census of infrared SEDs through cosmic time, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 431, Pages: 2317-2340, ISSN: 0035-8711
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- Citations: 130
Hildebrandt H, van Waerbeke L, Scott D, et al., 2013, Inferring the mass of submillimetre galaxies by exploiting their gravitational magnification of background galaxies, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 429, Pages: 3230-3237, ISSN: 0035-8711
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- Citations: 48
Rowan-Robinson M, May B, 2013, An improved model for the infrared emission from the zodiacal dust cloud: cometary, asteroidal and interstellar dust, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 429, Pages: 2894-2902, ISSN: 0035-8711
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- Citations: 58
Ade PAR, Aghanim N, Argueeso F, et al., 2013, <i>Planck</i> intermediate results VII. Statistical properties of infrared and radio extragalactic sources from the <i>Planck</i> Early Release Compact Source Catalogue at frequencies between 100 and 857 GHz, ASTRONOMY & ASTROPHYSICS, Vol: 550, ISSN: 0004-6361
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- Citations: 42
Lo Faro B, Franceschini A, Vaccari M, et al., 2013, THE COMPLEX PHYSICS OF DUSTY STAR-FORMING GALAXIES AT HIGH REDSHIFTS AS REVEALED BY <i>HERSCHEL</i> AND <i>SPITZER</i>, ASTROPHYSICAL JOURNAL, Vol: 762, ISSN: 0004-637X
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- Citations: 27
Wardlow JL, Cooray A, De Bernardis F, et al., 2013, HerMES: CANDIDATE GRAVITATIONALLY LENSED GALAXIES AND LENSING STATISTICS AT SUBMILLIMETER WAVELENGTHS, ASTROPHYSICAL JOURNAL, Vol: 762, ISSN: 0004-637X
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- Citations: 130
Patel H, Clements DL, Vaccari M, et al., 2013, Evolution of the far-infrared luminosity functions in the <i>Spitzer</i> Wide-area Infrared Extragalactic Legacy Survey, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 428, Pages: 291-306, ISSN: 0035-8711
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- Citations: 24
Rowan-Robinson M, Gonzalez-Solares E, Vaccari M, et al., 2013, Revised SWIRE photometric redshifts, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 428, Pages: 1958-1967, ISSN: 0035-8711
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- Citations: 42
Mauduit J-C, Lacy M, Farrah D, et al., 2012, The Spitzer Extragalactic Representative Volume Survey (SERVS): Survey Definition and Goals (vol 124, pg 714, 2012), PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, Vol: 124, Pages: 1135-1136, ISSN: 0004-6280
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- Citations: 15
Oliver SJ, Bock J, Altieri B, et al., 2012, The Herschel Multi-tiered Extragalactic Survey: HerMES, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 424, Pages: 1614-1635, ISSN: 0035-8711
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- Citations: 626
Mauduit J-C, Lacy M, Farrah D, et al., 2012, The Spitzer Extragalactic Representative Volume Survey (SERVS): Survey Definition and Goals, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, Vol: 124, Pages: 714-736, ISSN: 0004-6280
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- Citations: 131
Bethermin M, Le Floc'h E, Ilbert O, et al., 2012, HerMES: deep number counts at 250 μm, 350 μm and 500 μm in the COSMOS and GOODS-N fields and the build-up of the cosmic infrared background, ASTRONOMY & ASTROPHYSICS, Vol: 542, ISSN: 1432-0746
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- Citations: 141
Page MJ, Symeonidis M, Vieira JD, et al., 2012, The suppression of star formation by powerful active galactic nuclei, NATURE, Vol: 485, Pages: 213-216, ISSN: 0028-0836
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- Citations: 163
Kim D-W, Protopapas P, Trichas M, et al., 2012, A REFINED QSO SELECTION METHOD USING DIAGNOSTICS TESTS: 663 QSO CANDIDATES IN THE LARGE MAGELLANIC CLOUD, ASTROPHYSICAL JOURNAL, Vol: 747, ISSN: 0004-637X
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- Citations: 25
Roseboom IG, Ivison RJ, Greve TR, et al., 2012, The Herschel Multi-tiered Extragalactic Survey: SPIRE-mm photometric redshifts, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 419, Pages: 2758-2773, ISSN: 0035-8711
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- Citations: 89
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