Tunable filter imaging of high redshift quasar fields

Abstract

We have used the Taurus Tunable Filter to search for Lyman alpha emitters in the fields of three high redshift quasar fields: two at z~2.2 (MRC B1256-243 and MRC B2158-206) and one at z~4.5 (BR B0019-1522). Our observations had a field of view of around 35 square arcminutes, and reached AB magnitudes of magnitudes of ~21 (MRC B1256-243), ~22 (MRC B2158-206), and ~22.6 (BR B0019-1522), dependent on wavelength. We have identified candidate emission line galaxies in all three of the fields, with the higher redshift field being by far the richest. By combining our observations with simulations of the instrumental response, we estimate the total density of emission line galaxies in each field. Seventeen candidate emission line galaxies were found in within 1.5 Mpc of BR0019-1522, a number density of 4.9 +/- 1.2 x 10^-3 Mpc^-3, suggesting a significant galaxy overdensity at z~4.5.

13 pages, 8 figures. Submitted to MNRAS

References in corpus (25)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Star Formation in Galaxies Along the Hubble Sequence
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• First Results from the Large Area Lyman Alpha Survey
• The most distant structure of galaxies known: a protocluster at z=4.1
• Properties of Ly-alpha emitters around the radio galaxy MRC 0316-257
• Detection of Lyman-alpha Emitting Galaxies at Redshift z=4.55
• Spectroscopic Properties of the z=4.5 Lyman-alpha Emitters
• Models for Dusty Lyman alpha Emitters at High Redshift
• Discovery of six Ly alpha emitters near a radio galaxy at z ~ 5.2
• Evidence for Primordial Clustering Around the QSO SDSS J1030+0524 at z=6.28
• The properties of Ly-alpha emitting galaxies in hierarchical galaxy formation models
• The cluster environments of powerful radio-loud and radio-quiet AGN
• Clustering of Star-forming Galaxies Near a Radio Galaxy at z=5.2
• Evidence that powerful radio jets have a profound influence on the evolution of galaxies
• On the Lyman-alpha Emission of Starburst Galaxies
• The Taurus Tunable Filter Field Galaxy Survey: Sample Selection and Narrowband Number-Counts
• The Evolution of the Distribution of Star Formation Rates in Galaxies
• Detection and Measurement from Narrowband Tunable Filter Scans
• The Mysterious Absence of Neutral Hydrogen within One Mpc of a Luminous Quasar at Redshift 2.168
• MMTF: The Maryland-Magellan Tunable Filter
• Discovery of a high-z protocluster with tunable filters: the case of 6C0140+326 at z=4.4
• The nature of the Lyman-alpha emission region of FDF-4691
• Tunable-filter imaging of quasar fields at z~1. I. A cluster around MRC B0450-221
• Tunable-filter imaging of quasar fields at z ~ 1. II. The star-forming galaxy environments of radio-loud quasars

Cited by in corpus (13)

• The most luminous quasars do not live in the most massive dark matter haloes at any redshift
• The primordial environment of super massive black holes: large scale galaxy overdensities around $z\sim 6$ QSOs with LBT
• The galaxy environment of a QSO at z ~ 5.7
• Large Scale Environment of a $z=6.61$ Luminous Quasar Probed by Ly$\alpha$ Emitters and Lyman Break Galaxies
• Active Galactic Nucleus Environments and Feedback to Neighboring Galaxies at $z\sim 5$ Probed by Lyman-Alpha Emitters
• No Ly$\alpha$ emitters detected around a QSO at z=6.4: Suppressed by the QSO?
• Clustering of Lyman-alpha Emitters Around Quasars at $z\sim 4$
• ALMA reveals large overdensity and strong clustering of galaxies in quasar environments at $z\sim 4$
• Enhanced star formation in $z\sim 6$ quasar companions
• MMTF Discovery of Giant Ionization Cones in MR 2251-178: Implications for Quasar Radiative Feedback
• Filter Induced Bias in Lyα Emitter Surveys: A Comparison Between Standard and Tunable Filters. Gran Telescopio Canarias Preliminary Results
• Are there more galaxies than we see around high-$z$ quasars?
• Can luminous Lyman alpha emitters at $z$ $\simeq$ 5.7 and $z$ $\simeq$ 6.6 suppress star formation?