Prof Gavin Dalton: Publications

The clustering and evolution of ��α emitters at z ∼ 1 from HiZELS

Monthly Notices of the Royal Astronomical Society 404:3 (2010) 1551-1563

Authors:

D Sobral, PN Best, JE Geach, I Smail, M Cirasuolo, T Garn, GB Dalton, J Kurk

Abstract:

The clustering properties of a well-defined sample of 734 ��α emitters at z= 0.845 ± 0.015, obtained as part of the Hi-z Emission Line Survey, are investigated. The spatial correlation function of these ��α emitters is very well described by the power-law ξ = (r/r0)^-1.8, with a real-space correlation, r0, of 2.7 ± 0.3 h^-1 Mpc. The correlation length r0 increases strongly with ��α luminosity (L��α), from r0 ∼ 2 h^-1 Mpc for the most quiescent galaxies [star formation rates (SFRs) of ∼4 M⊙ yr^-1] up to r0 > 5 h^-1 Mpc for the brightest galaxies in ��α. The correlation length also increases with increasing rest-frame K-band (MK) luminosity, but the r0-L��α correlation maintains its full statistical significance at fixed MK. At z = 0.84, star-forming galaxies classified as irregulars or mergers are much more clustered than discs and non-mergers, respectively; however, once the samples are matched in L��α and MK, the differences vanish, implying that the clustering is independent of morphological type at z ∼ 1 just as in the local Universe. The typical ��α emitters found at z = 0.84 reside in dark matter haloes of ≈10¹² M⊙, but those with the highest SFRs reside in more massive haloes of ≈10¹³ M⊙. The results are compared with those of ��α surveys at different redshifts: although the break of the ��α luminosity function L*��α evolves by a factor of ∼30 from z= 0.24 to 2.23, if the ��α luminosities at each redshift are scaled by L*��α(z) then the correlation lengths indicate that, independently of cosmic time, galaxies with the same (L��α)/L*��α(z) are found in dark matter haloes of similar masses. This not only confirms that the star formation efficiency in high redshift haloes is higher than locally but also suggests a fundamental connection between the strong negative evolution of L*��α since z = 2.23 and the quenching of star formation in galaxies residing within dark matter haloes significantly more massive than 10¹² M⊙ at any given epoch. © 2010 The Authors. Journal compilation © 2010 RAS.

The herschel ATLAS

Publications of the Astronomical Society of the Pacific 122:891 (2010) 499-515

Authors:

S Eales, L Dunne, D Clements, A Cooray, G De Zotti, S Dye, R Ivison, M Jarvis, G Lagache, S Maddox, M Negrello, S Serjeant, MA Thompson, E Van Kampen, A Amblard, P Andreani, M Baes, A Beelen, GJ Bendo, D Benford, F Bertoldi, J Bock, D Boneield, A Boselli, C Bridge, V Buat, D Burgarella, R Carlberg, A Cava, P Chanial, S Charlot, N Christopher, P Coles, L Cortese, A Dariush, E Da Cunha, G Dalton, L Danese, H Dannerbauer, S Driver, J Dunlop, L Fan, D Farrah, D Frayer, C Frenk, J Geach, J Gardner, H Gomez, J González-Nuevo, E González-Solares, M Griffin, M Hardcastle, E Hatziminaoglou, D Herranz, D Hughes, E Ibar, WS Jeong, C Lacey, A Lapi, A Lawrence, M Lee, L Leeuw, J Liske, M López-Caniego, T Müller, K Nandra, P Panuzzo, A Papageorgiou, G Patanchon, J Peacock, C Pearson, S Phillipps, M Pohlen, C Popescu, S Rawlings, E Rigby, M Rigopoulou, A Robotham, G Rodighiero, A Sansom, B Schulz, D Scott, DJB Smith, B Sibthorpe, I Smail, J Stevens, W Sutherland, T Takeuchi, J Tedds, P Temi, R Tuffs, M Trichas, M Vaccari, I Valtchanov, P Van Der Werf, A Verma, J Vieria, C Vlahakis, GJ White

Abstract:

The Herschel ATLAS is the largest open-time key project that will be carried out on the Herschel Space Observatory. It will survey 570 deg ² of the extragalactic sky, 4 times larger than all the other Herschel extragalactic surveys combined, in five far-infrared and submillimeter bands. We describe the survey, the complementary multiwavelength data sets that will be combined with the Herschel data, and the six major science programs we are undertaking. Using new models based on a previous submillimeter survey of galaxies, we present predictions of the properties of the ATLAS sources in other wave bands. © 2010. The Astronomical Society of the Pacific. All rights reserved.

The Herschel ATLAS

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 122:891 (2010) 499-515

Authors:

S Eales, L Dunne, D Clements, A Cooray, G De Zotti, S Dye, R Ivison, M Jarvis, G Lagache, S Maddox, M Negrello, S Serjeant, MA Thompson, E Van Kampen, A Amblard, P Andreani, M Baes, A Beelen, GJ Bendo, D Benford, F Bertoldi, J Bock, D Bonfield, A Boselli, C Bridge, V Buat, D Burgarella, R Carlberg, A Cava, P Chanial, S Charlot, N Christopher, P Coles, L Cortese, A Dariush, E da Cunha, G Dalton, L Danese, H Dannerbauer, S Driver, J Dunlop, L Fan, D Farrah, D Frayer, C Frenk, J Geach, J Gardner, H Gomez, J Gonzalez-Nuevo, E Gonzalez-Solares, M Griffin, M Hardcastle, E Hatziminaoglou, D Herranz, D Hughes, E Ibar, Woong-Seob Jeong, C Lacey, A Lapi, A Lawrence, M Lee, L Leeuw, J Liske, M Lopez-Caniego, T Mueller, K Nandra, P Panuzzo, A Papageorgiou, G Patanchon, J Peacock, C Pearson, S Phillipps, M Pohlen, C Popescu, S Rawlings, E Rigby, M Rigopoulou, A Robotham, G Rodighiero, A Sansom, B Schulz, D Scott, DJB Smith, B Sibthorpe, I Smail, J Stevens, W Sutherland, T Takeuchi, J Tedds, P Temi, R Tuffs, M Trichas, M Vaccari, I Valtchanov, P van der Werf, A Verma, J Vieria, C Vlahakis, Glenn J White

The clustering and evolution of ��α emitters at z ∼ 1 from HiZELS☆

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 404:3 (2010) 1551-1563

Authors:

David Sobral, Philip N Best, James E Geach, Ian Smail, Michele Cirasuolo, Timothy Garn, Gavin B Dalton, Jaron Kurk

The clustering and evolution of H-alpha emitters at z~1 from HiZELS

(2009)

Authors:

David Sobral, Philip N Best, James E Geach, Ian Smail, Michele Cirasuolo, Timothy Garn, Gavin B Dalton, Jaron Kurk

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