Prof. Dimitra Rigopoulou: Publications

HerMES: The Rest-Frame UV Emission and A Lensing Model for the z=6.34 Luminous Dusty Starburst Galaxy HFLS3

(2014)

Authors:

Asantha Cooray, Jae Calanog, Julie L Wardlow, J Bock, C Bridge, D Burgarella, RS Bussmann, CM Casey, D Clements, A Conley, D Farrah, H Fu, R Gavazzi, RJ Ivison, N Laporte, B Lofaro, Brian Ma, G Magdis, SJ Oliver, WA Osage, I Pe'rez-Fournon, D Riechers, D Rigopoulou, D Scott, M Viero, D Watson

HerMES: SPECTRAL ENERGY DISTRIBUTIONS OF SUBMILLIMETER GALAXIES AT z > 4**Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

The Astrophysical Journal American Astronomical Society 784:1 (2014) 52

Authors:

J-S Huang, D Rigopoulou, G Magdis, M Rowan-Robinson, Y Dai, JJ Bock, D Burgarella, S Chapman, DL Clements, A Cooray, D Farrah, J Glenn, S Oliver, AJ Smith, L Wang, M Page, D Riechers, I Roseboom, M Symeonidis, GG Fazio, M Yun, TMA Webb, A Efstathiou

HerMES: Spectral Energy Distributions of Submillimeter Galaxies at z >4

(2014)

Authors:

Herschel Observations of Far-Infrared Cooling Lines in intermediate Redshift (Ultra)-luminous Infrared Galaxies

(2014)

Authors:

D Rigopoulou, R Hopwood, GE Magdis, N Thatte, BM Swinyard, D Farrah, J-S Huang, A Alonso-Herrero, JJ Bock, D Clements, A Cooray, MJ Griffin, S Oliver, C Pearson, D Riechers, D Scott, A Smith, M Vaccari, I Valtchanov, L Wang

Herschel Observations of Far-Infrared Cooling Lines in intermediate Redshift (Ultra)-luminous Infrared Galaxies

ArXiv 1401.23 (2014)

Authors:

Abstract:

We report the first results from a spectroscopic survey of the [CII] 158um line from a sample of intermediate redshift (0.210^11.5 Lsun), using the SPIRE-Fourier Transform Spectrometer (FTS) on board the Herschel Space Observatory. This is the first survey of [CII] emission, an important tracer of star-formation, at a redshift range where the star-formation rate density of the Universe increases rapidly. We detect strong [CII] 158um line emission from over 80% of the sample. We find that the [CII] line is luminous, in the range (0.8-4)x10^(-3) of the far-infrared continuum luminosity of our sources, and appears to arise from photodissociation regions on the surface of molecular clouds. The L[CII]/LIR ratio in our intermediate redshift (U)LIRGs is on average ~10 times larger than that of local ULIRGs. Furthermore, we find that the L[CII]/LIR and L[CII]/LCO(1-0) ratios in our sample are similar to those of local normal galaxies and high-z star-forming galaxies. ULIRGs at z~0.5 show many similarities to the properties of local normal and high-z star forming galaxies. Our findings strongly suggest that rapid evolution in the properties of the star forming regions of luminous infrared galaxies is likely to have occurred in the last 5 billion years.

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