University of Hertfordshire Research Archive

        JavaScript is disabled for your browser. Some features of this site may not work without it.

        Browse

        All of UHRABy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

        Arkivum Files

        My Downloads
        View Item 
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item

        HiZELS: a high-redshift survey of H alpha emitters - I : The cosmic star formation rate and clustering at z=2.23

        View/Open
        904985.pdf (PDF, 839Kb)
        Author
        Geach, James E.
        Smail, Ian
        Best, P.N.
        Kurk, J.
        Casali, M.
        Ivison, R. J.
        Coppin, Kristen
        Attention
        2299/11312
        Abstract
        We present results from a near-infrared narrow-band survey of emission-line galaxies at z = 2.23, using the Wide Field Camera on the United Kingdom Infrared Telescope. The H(2)S1 narrow-band filter (lambda(c) = 2.121 mu m) we employ selects the H alpha emission-line redshifted to z = 2.23, and is thus suitable for selecting 'typical' star-forming galaxies and active galactic nuclei at this epoch. The pilot study was undertaken in the well-studied Cosmological Evolution Survey field (COSMOS) and is already the largest near-infrared narrow-band survey at this depth, with a line flux limit of F(H alpha) similar to 10(-16) erg s(-1) cm(-2) over 0.60 deg(2), probing similar to 220 x 10(3) Mpc(3) (comoving) down to a limiting star formation rate of similar to 30 M(circle dot) yr(-1) (3 sigma). In this paper, we present the results from our pilot survey and evaluate the H alpha luminosity function and estimate the clustering properties of H alpha emitters at z = 2.23 from 55 detected galaxies. The integrated luminosity function is used to estimate the volume-averaged star formation rate at z = 2.23: rho(SFR) = 0.17(-0.09)(+0.16) M(circle dot) yr(-1) Mpc(-3) for L(H alpha) > 10(42) erg s(-1). For the first time, we use the H alpha star formation tracer to reliably constrain rho(SFR) out to z = 2.23 demonstrating the rapid increase in rho(SFR) out to this redshift as well as confirming the flattening in rho(SFR) between z similar to 1 and 2. In addition to the luminosity distribution, we analyse the clustering properties of these galaxies. Using the two-point angular correlation function, omega(theta), we estimate a real-space correlation length of r(0) = 4.2(-0.2)(+0.4) h(-1) Mpc. In comparison to models of clustering which take into account bias evolution, we estimate that these galaxies are hosted by dark matter haloes of mass M(halo) similar to 10(12) M(circle dot) consistent with the progenitors of the Milky Way.
        Publication date
        2008-08-21
        Published in
        Monthly Notices of the Royal Astronomical Society
        Published version
        https://doi.org/10.1111/j.1365-2966.2008.13481.x
        Other links
        http://hdl.handle.net/2299/11312
        Metadata
        Show full item record

        Related items

        Showing items related by title, author, creator and subject.

        • The H alpha galaxy survey. I. The galaxy sample, H alpha narrow-band observations and star formation parameters for 334 galaxies 

          James, P.A.; Shane, N.S.; Beckman, J.E.; Cardwell, A.; Collins, C.A.; Etherton, J.; de Jong, R.S.; Fathi, K.; Knapen, J.; Peletier, R.F.; Percival, S.M.; Pollacco, D.L.; Seigar, M.S.; Stedman, S. (2004)
          We discuss the selection and observations of a large sample of nearby galaxies, which we are using to quantify the star formation activity in the local Universe. The sample consists of 334 galaxies across all Hubble types ...
        • On the Key Processes that Drive Galaxy Evolution: the Role of Galaxy Mergers, Accretion, Local Environment and Feedback in Shaping the Present-Day Universe 

          Martin, Garreth (2019-07-17)
          The study of galaxy evolution is a fundamental discipline in modern astrophysics, dealing with how and why galaxies of all types evolve over time. The diversity of present-day galaxies is a reflection of the processes ...
        • Radio Galaxy Zoo: discovery of a poor cluster through a giant wide-angle tail radio galaxy 

          Banfield, J. K.; Andernach, H.; Kapinska, A. D.; Rudnick, L.; Hardcastle, M. J.; Cotter, G.; Vaughan, S.; Jones, T. W.; Heywood, I.; Wing, J. D.; Wong, O. I.; Matorny, T.; Terentev, I. A.; Lopez-Sanchez, A. R.; Norris, R. P.; Seymour, N.; Shabala, S. S.; Willett, K. W. (2016-08-11)
          We have discovered a previously unreported poor cluster of galaxies (RGZ-CL J0823.2+0333) through an unusual giant wide-angle tail radio galaxy found in the Radio Galaxy Zoo project. We obtained a spectroscopic redshift ...
        Keep in touch

        © 2019 University of Hertfordshire

        I want to...

        • Apply for a course
        • Download a Prospectus
        • Find a job at the University
        • Make a complaint
        • Contact the Press Office

        Go to...

        • Accommodation booking
        • Your student record
        • Bayfordbury
        • KASPAR
        • UH Arts

        The small print

        • Terms of use
        • Privacy and cookies
        • Criminal Finances Act 2017
        • Modern Slavery Act 2015
        • Sitemap

        Find/Contact us

        • T: +44 (0)1707 284000
        • E: ask@herts.ac.uk
        • Where to find us
        • Parking
        • hr
        • qaa
        • stonewall
        • AMBA
        • ECU Race Charter
        • disability confident
        • AthenaSwan