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

By James E. Geach, I. Smail, P. Best, J. Kurk, M. Casali, R. Ivison, K. Coppin. 2008

157 citations recorded by the source corpus.

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 H2S1 narrow-band filter ( �c = 2.121µm) we employ selects the Hemission line redshifted to z = 2.23, and is thus suitable for selecting 'typical' star forming g alaxies 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-infrar ed narrow-band survey at this depth, with a line flux limit of FH� � 10 −16 erg s −1 cm −2 over 0.60 square degrees, probing �220× 10 3 Mpc 3 (co-moving) down to a limiting star formation rate of �30M⊙ yr −1 (3�). In this paper we present the results from our pilot survey and evaluate the Hluminosity function and estimate the clustering properties of Hemitters at z = 2.23 from 55 detected galaxies. The integrated luminosity function is used to est imate the volume averaged star formation rate at z = 2.23: �SFR = 0.17 +0.16 −0.09M⊙ yr −1 Mpc −3 for LH� > 10 42 erg s −1 . For the first time, we use the Hstar-formation tracer to reliably constrainSFR out to z = 2.23 demonstrating the rapid increase inSFR out to this redshift as well as confirming the flattening inSFR betweenz � 1-2. In addition to the luminosity distribution, we analyse t he clustering properties of these galaxies. Using the 2-point angular correlation function, !(�), we estimate a real space correlation length of r0 = 4.2 +0.4 −0.2 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 halos of mass Mhalo � 10 12 M⊙ consistent with the progenitors of the Milky

Subfields: Astronomy and Astrophysics, Instrumentation

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In Astronomy and Astrophysics

1. P. V. van Dokkum
2. M. Franx
3. R. Dav'e
4. I. Labbé
5. P. Hopkins
6. L. Hernquist
7. G. Illingworth
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In Instrumentation

1. P. V. van Dokkum
2. M. Franx
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8. Naveen A. Reddy

Citations in the corpus

• HiZELS:a high-redshift survey of Hα emitters - II. the nature of star-forming galaxies at z = 0.84 (2009, methodology): “For now, however, a conservative AHα = 1 mag is used, which is the same correction adopted in most of the similar studies done before (e.g. Fujita et al. 2003; Ly et al. 2007; Geach et al. 2008).”
• On the evolution and environmental dependence of the star formation rate versus stellar mass relation since z ∼ 2 (2013, methodology): “The HiZELS Hα emitter samples are selected from the UDS and COSMOS fields (total∼2 deg2; see also Geach et al. 2008; 2012; Sobral et al. 2009; 2012; 2013) by widefield narrow-band imaging observations with NB921 on Subaru (z = 0.4), NBJ on UKIRT (z = 0.8), and the NBK /H2 filters on UKIRT/VLT (z =…”
• Galaxy evolution in cosmological simulations with outflows ― I. Stellar masses and star formation rates (2011, background): “For Hayes, Schaerer, & Östlin (2010) we show their “combined” best-fit Schechter function which is supplemented by brightend data from Geach et al. (2008), and correct for 0.977 magnitudes of extinction (AV = 1.19 at 6563Å) independent of LHα.”
• The dependence of star formation activity on environment and stellar mass at z∼ 1 from the HiZELS-Hα survey (2010, background): “This has led to significant progress (e.g. Ly et al. 2007; Shioya et al. 2008; Geach et al. 2008; Sobral et al. 2009a; Garn et al. 2010; Sobral et al. 2010) taking advantage of large samples of typically hundreds of Hα emitters up to z = 2.23.”
• 3D-HST: A WIDE-FIELD GRISM SPECTROSCOPIC SURVEY WITH THE HUBBLE SPACE TELESCOPE (2012, result): “The line sensitivity of the early NICMOS grism observations is similar to that of wide-field narrow-band photometric surveys (e.g., HIZELS z = 2.3, Geach et al. 2008), but the grism observations sample similar or larger cosmic volumes for even a limited number of pointings due to the fact that they…”
• A large Hα survey at z = 2.23, 1.47, 0.84 and 0.40: the 11 Gyr evolution of star-forming galaxies from HiZELS (2012, methodology): “The first results (Geach et al. 2008, S09; S12) indicate that the Hα luminosity function evolves significantly, mostly due to an increase of about one order of magnitude in L∗Hα, the characteristic Hα luminosity, from the local Universe to z = 2.23 (S09).”
• The properties of the star-forming interstellar medium at z = 0.84-2.23 from HiZELS : mapping the internal dynamics and metallicity gradients in high-redshift disc galaxies. (2012, unknown): “…panoramic (degree-scale) imaging with near-infrared narrow-band filters, to carry out the High-Z Emission Line Survey (HiZELS), targeting Hα emitting galaxies in four precise (δz = 0.03) redshift slices: z = 0.40, 0.84, 1.47 and 2.23 (Geach et al. 2008; Sobral et al. 2009, 2010, 2011, 2012a,b).”
• THE MOSDEF SURVEY: MEASUREMENTS OF BALMER DECREMENTS AND THE DUST ATTENUATION CURVE AT REDSHIFTS z ∼ 1.4–2.6 (2015, methodology): “Deep ground-based narrowband imaging (Geach et al. 2008; Lee et al. 2012; Ly et al. 2012; Sobral et al. 2012; Momcheva et al. 2013), and space-based grism spectroscopy afforded by the Hubble Space Telescope (HST) WFC3 camera (Atek et al. 2010; Brammer et al. 2012; Domı́nguez et al. 2013; Price et…”
• Cosmic evolution of submillimeter galaxies and their contribution to stellar mass assembly (2009, unknown): “…0.0014 Hα Brinchmann et al. (2004) 0.010 0.010 0.0158 0.0033 0.0071 Hα Hanish et al. (2006) 0.840 0.030 0.1500 0.0200 0.0200 Hα Sobral et al. (2009) 2.230 0.150 0.1700 0.0900 0.1600 Hα Geach et al. (2008) 0.242 0.009 0.0180 0.0040 0.0070 Hα Shioya et al. (2008) 0.840 0.030 0.1700 0.0300 0.0300 Hα…”
• Star formation at z=1.47 from HiZELS: an Hα+[O ii] double-blind study* (2011, methodology): “The High-Redshift Emission Line Survey (HiZELS)1 (Geach et al. 2008b; Sobral et al. 2009b, hereafter S09) is a Campaign Project using the Wide Field Camera (WFCAM) on the United Kingdom Infrared Telescope (UKIRT) and exploits specially designed narrow-band filters in the J and H bands (NBJ and…”