[OIII] emitters in the field of the MRC 0316-257 protocluster

Abstract

Venemans et al. (2005) found evidence for an overdensity of Ly-alpha emission line galaxies associated with the radio galaxy MRC 0316-257 at z=3.13 indicating the presence of a massive protocluster. Here, we present the results of a search for additional star-forming galaxies and AGN within the protocluster. Narrow-band infrared imaging was used to select candidate [O III] emitters in a 1.1 x 1.1 Mpc^2 region around the radio galaxy. Thirteen candidates have been detected. Four of these are among the previously confirmed sample of Ly-alpha galaxies, and an additional three have been confirmed through follow-up infrared spectroscopy. The three newly confirmed objects lie within a few hundred km/s of each other, but are blueshifted with respect to the radio galaxy and Ly-alpha emitters by ~2100 km/s. Although the sample is currently small, our results indicate that the radio-selected protocluster is forming at the centre of a larger, ~60 co-moving Mpc super-structure. On the basis of an HST/ACS imaging study we calculate dust-corrected star-formation rates and investigate morphologies and sizes of the [O III] candidate emitters. From a comparison of the star formation rate derived from UV-continuum and [O III] emission, we conclude that at least two of the [O III] galaxies harbour an AGN which ionized the O+ gas.

arXiv comment11 pages, 6 figures. Accepted for publication in MNRAS

References in corpus (39)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• The Host Galaxies of AGN
• Rest-Frame Ultraviolet Spectra of z~3 Lyman Break Galaxies
• The Star Formation History of Field Galaxies
• The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN
• Starbursts and Star Clusters in the Ultraviolet
• The Size Evolution of High Redshift Galaxies
• Infared Observations of Nebular Emission Lines from Galaxies at z = 3
• Optical Star-Formation Rate Indicators
• JHK Standard Stars for Large Telescopes: the UKIRT Fundamental and Extended Lists
• Star formation history and dust attenuation in galaxies drawn from ultraviolet surveys
• The Massive Hosts of Radio Galaxies Across Cosmic Time
• Discovery of an X-ray-Luminous Galaxy Cluster at z=1.4
• Galaxy Size Evolution at High Redshift and Surface Brightness Selection Effects: Constraints from the Hubble Ultra Deep Field
• Protoclusters associated with z > 2 radio galaxies. I. Characteristics of high redshift protoclusters
• The Large-scale and Small-scale Clustering of Lyman-Break Galaxies at 3.5 < z< 5.5 from the GOODS survey
• Radio galaxies at z~2.5: results from Keck spectropolarimetry
• Properties of Ly-alpha emitters around the radio galaxy MRC 0316-257
• The Spiderweb galaxy: a forming massive cluster galaxy at z~2
• Subaru Deep Survey. IV. Discovery of a Large-Scale Structure at Redshift \simeq 5
• An IR-Selected Galaxy Cluster at z = 1.41
• Lyman break galaxies, Lya emitters and a radio galaxy in a protocluster at z=4.1
• A large population of 'Lyman-break' galaxies in a protocluster at redshift z=4.1
• The Evolution of Dust Opacity in Galaxies
• Clustering of Star-forming Galaxies Near a Radio Galaxy at z=5.2
• A Chandra study of X-ray sources in the field of the z=2.16 radio galaxy MRC 1138-262
• Clustering around the radio-galaxy MRC0316-257 at z=3.14
• Measurement of [OIII] Emission in Lyman Break Galaxies
• Diffuse UV light associated with the Spiderweb Galaxy: evidence for in-situ star formation outside galaxies
• Feedback and Brightest Cluster Galaxy Formation: ACS Observations of the Radio Galaxy TN J1338--1942 at z=4.1
• The Filamentary Large Scale Structure around the z = 2.16 Radio Galaxy PKS 1138-262
• VIMOS-VLT and Spitzer observations of a radio galaxy at z=2.5
• Large-scale structure of Lyman break galaxies around a radio galaxy protocluster at z~4
• A Cluster or Filament of Galaxies at Redshift Z=2.5
• Proto-clusters in the Lambda CDM Universe
• Tracing large-scale structure at high redshift with Lyman-alpha emitters: the effect of peculiar velocities
• A Narrowband Imaging Search for [OIII] Emission from Galaxies at z>3
• Rest-Frame Ultraviolet to Near Infrared Observations of an Interacting Lyman Break Galaxy at z = 4.42

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• A SINFONI view of flies in the Spiderweb: a galaxy cluster in the making
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• Spectroscopic Confirmation of an Ultra Massive and Compact Galaxy at z=3.35: A Detailed Look at an Early Progenitor of Local Most Massive Ellipticals
• Emission-Line Galaxies from the HST PEARS Grism Survey I: The South Fields
• A spectroscopic follow-up program of very massive galaxies at 3<z<4: confirmation of spectroscopic redshifts, and a high fraction of powerful AGN
• Overdensities of 24um Sources in the Vicinities of High-Redshift Radio Galaxies
• [OIII] emission line as a tracer of star-forming galaxies at high redshifts: Comparison between H$\alpha$ and [OIII] emitters at $z$=2.23 in HiZELS
• The candidate cluster and protocluster catalog (CCPC) of spectroscopically identified structures spanning $2.74<z<3.71$
• A z~3 radio galaxy and its protocluster: evidence for a superstructure?
• Internal kinematics of spiral galaxies in distant clusters IV. Gas kinematics of spiral galaxies in intermediate redshift clusters and in the field
• A galaxy populations study of a radio-selected protocluster at z~3.1
• Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
• Multiple emission lines of H$\alpha$ emitters at $z\sim 2.3$ from the broad and medium-band photometry in the ZFOURGE Survey
• The Physical Properties of Star-Forming Galaxies with Strong [O III] Lines at z=3.25