On the far-infrared metallicity diagnostics: applications to high-redshift galaxies
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473:1 (2018) 20-29
HERUS: The far-IR/submm spectral energy distributions of local ULIRGs and photometric atlas
Monthly Notices of the Royal Astronomical Society Oxford University Press 475:2 (2017) 2097-2121
Abstract:
We present the Herschel-SPIRE photometric atlas for a complete flux limited sample of 43 local Ultraluminous Infrared Galaxies (ULIRGs), selected at 60μm by IRAS, as part of the HERschel ULIRG Survey (HERUS). Photometry observations were obtained using the SPIRE instrument at 250, 350 and 500μm. We describe these observations, present the results, and combine the new observations with data from IRAS to examine the far-IR spectral energy distributions (SEDs) of these sources. We fit the observed SEDs of HERUS objects with a simple parameterised modified black body model where temperature and emissivity β are free parameters.We compare the fitted values to those of non-ULIRG local galaxies, and find, in agreement with earlier results, that HERUS ULIRGs have warmer dust (median temperature T = 37.9±4.7 K compared to 21.3±3.4 K) but a similar β distribution (median β = 1.7 compared to 1.8) to the Herschel reference sample (HRS, Cortese et al., 2014) galaxies. Dust masses are found to be in the range of 107.5 to 109 M⊙, significantly higher than that of Herschel Reference Sample (HRS) sources.We compare our results for local ULIRGs with higher redshift samples selected at 250 and 850μm. These latter sources generally have cooler dust and/or redder 100-to-250 μm colours than our 60μm-selected ULIRGs. We show that this difference may in part be the result of the sources being selected at different wavelengths rather than being a simple indication of rapid evolution in the properties of the population.Rise of the Titans: A dusty, hyper-luminous "870 micron riser" galaxy at z~6
Astrophysical Journal Institute of Physics 850 (2017) 1
Abstract:
We report the detection of ADFS-27, a dusty, starbursting major merger at a redshift of z=5.655, using the Atacama Large Millimeter/submillimeter Array (ALMA). ADFS-27 was selected from Herschel/SPIRE and APEX/LABOCA data as an extremely red "870 micron riser" (i.e., S_250Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer
ASTROPHYSICAL JOURNAL 848:1 (2017) ARTN 30
The origins of [C ii] emission in local star-forming galaxies
Astrophysical Journal Institute of Physics 845 (2017)