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Herschel-ATLAS : multi-wavelength SEDs and physical properties of 250 µm selected galaxies at z < 0.5

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Abstract
We present a pan-chromatic analysis of an unprecedented sample of 1402 250 mu m selected galaxies at z < 0.5 (<(z)over bar> = 0.24) from the Herschel-ATLAS survey. We complement our Herschel 100-500 mu m data with UV-K-band photometry from the Galaxy And Mass Assembly (GAMA) survey and apply the magphys energy-balance technique to produce pan-chromatic spectral energy distributions (SEDs) for a representative sample of 250 mu m selected galaxies spanning the most recent 5 Gyr of cosmic history. We derive estimates of physical parameters, including star formation rates, stellar masses, dust masses and infrared (IR) luminosities. The typical H-ATLAS galaxy at z < 0.5 has a far-infrared luminosity in the range 10(10)-10(12) L-circle dot (SFR: 1-50 M-circle dot yr(-1)) and thus is broadly representative of normal star-forming galaxies over this redshift range. We show that 250 mu m selected galaxies contain a larger mass of dust at a given IR luminosity or star formation rate than previous samples selected at 60 mu m from the IRAS. We derive typical SEDs for H-ATLAS galaxies, and show that the emergent SED shape is most sensitive to specific star formation rate. The optical-UV SEDs also become more reddened due to dust at higher redshifts. Our template SEDs are significantly cooler than existing IR templates. They may therefore be most appropriate for inferring total IR luminosities from moderate redshift sub-millimetre selected samples and for inclusion in models of the lower redshift sub-millimetre galaxy populations.
Keywords
STAR-FORMING GALAXIES, PHOTOMETRIC REDSHIFTS, DEEP FIELD-SOUTH, SCIENCE DEMONSTRATION PHASE, SPECTRAL ENERGY-DISTRIBUTION, SKY SURVEY, SUBMILLIMETER WAVELENGTHS, NEARBY GALAXIES, COLD DUST, STELLAR POPULATIONS

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Citation

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Chicago
Smith, DJB, L Dunne, E da Cunha, K Rowlands, SJ Maddox, HL Gomez, DG Bonfield, et al. 2012. “Herschel-ATLAS : Multi-wavelength SEDs and Physical Properties of 250 Μm Selected Galaxies at z < 0.5.” Monthly Notices of the Royal Astronomical Society 427 (1): 703–727.
APA
Smith, DJB, Dunne, L., da Cunha, E., Rowlands, K., Maddox, S., Gomez, H., Bonfield, D., et al. (2012). Herschel-ATLAS : multi-wavelength SEDs and physical properties of 250 µm selected galaxies at z < 0.5. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 427(1), 703–727.
Vancouver
1.
Smith D, Dunne L, da Cunha E, Rowlands K, Maddox S, Gomez H, et al. Herschel-ATLAS : multi-wavelength SEDs and physical properties of 250 µm selected galaxies at z < 0.5. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2012;427(1):703–27.
MLA
Smith, DJB, L Dunne, E da Cunha, et al. “Herschel-ATLAS : Multi-wavelength SEDs and Physical Properties of 250 Μm Selected Galaxies at z < 0.5.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 427.1 (2012): 703–727. Print.
@article{3080182,
  abstract     = {We present a pan-chromatic analysis of an unprecedented sample of 1402 250 mu m selected galaxies at z {\textlangle} 0.5 ({\textlangle}(z)over bar{\textrangle} = 0.24) from the Herschel-ATLAS survey. We complement our Herschel 100-500 mu m data with UV-K-band photometry from the Galaxy And Mass Assembly (GAMA) survey and apply the magphys energy-balance technique to produce pan-chromatic spectral energy distributions (SEDs) for a representative sample of 250 mu m selected galaxies spanning the most recent 5 Gyr of cosmic history. We derive estimates of physical parameters, including star formation rates, stellar masses, dust masses and infrared (IR) luminosities. The typical H-ATLAS galaxy at z {\textlangle} 0.5 has a far-infrared luminosity in the range 10(10)-10(12) L-circle dot (SFR: 1-50 M-circle dot yr(-1)) and thus is broadly representative of normal star-forming galaxies over this redshift range. We show that 250 mu m selected galaxies contain a larger mass of dust at a given IR luminosity or star formation rate than previous samples selected at 60 mu m from the IRAS. We derive typical SEDs for H-ATLAS galaxies, and show that the emergent SED shape is most sensitive to specific star formation rate. The optical-UV SEDs also become more reddened due to dust at higher redshifts. Our template SEDs are significantly cooler than existing IR templates. They may therefore be most appropriate for inferring total IR luminosities from moderate redshift sub-millimetre selected samples and for inclusion in models of the lower redshift sub-millimetre galaxy populations.},
  author       = {Smith, DJB and Dunne, L and da Cunha, E and Rowlands, K and Maddox, SJ and Gomez, HL and Bonfield, DG and Charlot, S and Driver, SP and Popescu, CC and Tuffs, RJ and Dunlop, JS and Jarvis, MJ and Seymour, N and Symeonidis, M and Baes, Maarten and Bourne, N and Clements, DL and Cooray, A and De Zotti, G and Dye, S and Eales, S and Scott, D and Verma, A and van der Werf, P and Andrae, E and Auld, R and Buttiglione, S and Cava, A and Dariush, A and Fritz, Jacopo and Hopwood, R and Ibar, E and Ivison, RJ and Kelvin, L and Madore, BF and Pohlen, M and Rigby, EE and Robotham, A and Seibert, M and Temi, P},
  issn         = {0035-8711},
  journal      = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
  keyword      = {STAR-FORMING GALAXIES,PHOTOMETRIC REDSHIFTS,DEEP FIELD-SOUTH,SCIENCE DEMONSTRATION PHASE,SPECTRAL ENERGY-DISTRIBUTION,SKY SURVEY,SUBMILLIMETER WAVELENGTHS,NEARBY GALAXIES,COLD DUST,STELLAR POPULATIONS},
  language     = {eng},
  number       = {1},
  pages        = {703--727},
  title        = {Herschel-ATLAS : multi-wavelength SEDs and physical properties of 250 {\textmu}m selected galaxies at z {\textlangle} 0.5},
  url          = {http://dx.doi.org/10.1111/j.1365-2966.2012.21930.x},
  volume       = {427},
  year         = {2012},
}

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