Search Publications
Dusty star-forming galaxies at high redshift
Casey, Caitlin M.; Narayanan, Desika; Cooray, Asantha
Far-infrared and submillimeter wavelength surveys have now established the important role of dusty, star-forming galaxies (DSFGs) in the assembly of stellar mass and the evolution of massive galaxies in the Universe. The brightest of these galaxies have infrared luminosities in excess of 1013 L⊙ with implied star-formation ra…
The applicability of far-infrared fine-structure lines as star formation rate tracers over wide ranges of metallicities and galaxy types
Lebouteiller, Vianney; De Looze, Ilse; Baes, Maarten +19 more
Aims: We analyze the applicability of far-infrared fine-structure lines [Cii] 158 µm, [Oi] 63 µm, and [Oiii] 88 µm to reliably trace the star formation rate (SFR) in a sample of low-metallicity dwarf galaxies from the Herschel Dwarf Galaxy Survey and, furthermore, extend the analysis to a broad sample of galaxies of various …
Andromeda's Dust
Schinnerer, Eva; Rix, Hans-Walter; Draine, B. T. +10 more
Spitzer Space Telescope and Herschel Space Observatory imaging of M31 is used, with a physical dust model, to construct maps of dust surface density, dust-to-gas ratio, starlight heating intensity, and polycyclic aromatic hydrocarbon (PAH) abundance, out to R ≈ 25 kpc. The global dust mass is M d = 5.4 × 107 M ⊙, t…
An ALMA survey of sub-millimetre Galaxies in the Extended Chandra Deep Field South: the far-infrared properties of SMGs
Thomson, A. P.; Ivison, R. J.; Smail, Ian +22 more
We exploit Atacama Large Millimeter Array (ALMA) 870 µm observations of sub-millimetre sources in the Extended Chandra Deep Field South to investigate the far-infrared properties of high-redshift sub-millimetre galaxies (SMGs). Using the precisely located 870 µm ALMA positions of 99 SMGs, together with 24µm and radio imaging, we …
An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: The Redshift Distribution and Evolution of Submillimeter Galaxies
Thomson, A. P.; Ivison, R. J.; Smail, Ian +21 more
We present the first photometric redshift distribution for a large sample of 870 µm submillimeter galaxies (SMGs) with robust identifications based on observations with ALMA. In our analysis we consider 96 SMGs in the Extended Chandra Deep Field South, 77 of which have 4-19 band photometry. We model the SEDs for these 77 SMGs, deriving a med…
Submillimeter Galaxies as Progenitors of Compact Quiescent Galaxies
Berta, S.; Magnelli, B.; Lutz, D. +16 more
Three billion years after the big bang (at redshift z = 2), half of the most massive galaxies were already old, quiescent systems with little to no residual star formation and extremely compact with stellar mass densities at least an order of magnitude larger than in low-redshift ellipticals, their descendants. Little is known about how they forme…
Planck 2013 results. XXX. Cosmic infrared background measurements and implications for star formation
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +239 more
We present new measurements of cosmic infrared background (CIB) anisotropies using Planck. Combining HFI data with IRAS, the angular auto- and cross-frequency power spectrum is measured from 143 to 3000 GHz, and the auto-bispectrum from 217 to 545 GHz. The total areas used to compute the CIB power spectrum and bispectrum are about 2240 and 4400 de…
The evolution of the dust and gas content in galaxies
Berta, S.; Magnelli, B.; Nordon, R. +36 more
We use deep Herschel observations taken with both PACS and SPIRE imaging cameras to estimate the dust mass of a sample of galaxies extracted from the GOODS-S, GOODS-N and the COSMOS fields. We divide the redshift-stellar mass (Mstar)-star formation rate (SFR) parameter space into small bins and investigate average properties over this g…
The incidence of obscuration in active galactic nuclei
Berta, S.; Magnelli, B.; Lutz, D. +22 more
We study the incidence of nuclear obscuration on a complete sample of 1310 active galactic nuclei (AGN) selected on the basis of their rest-frame 2-10 keV X-ray flux from the XMM-COSMOS survey, in the redshift range 0.3 < z < 3.5. We classify the AGN as obscured or unobscured on the basis of either the optical spectral properties and the ove…
Localized sources of water vapour on the dwarf planet (1)Ceres
Marston, Anthony; Müller, Thomas; Lee, Seungwon +10 more
The `snowline' conventionally divides Solar System objects into dry bodies, ranging out to the main asteroid belt, and icy bodies beyond the belt. Models suggest that some of the icy bodies may have migrated into the asteroid belt. Recent observations indicate the presence of water ice on the surface of some asteroids, with sublimation a potential…