Bright galaxies at Hubble's redshift detection frontier: Preliminary results and design from the redshift z~9-10 BoRG pure-parallel HST survey

Abstract

We present the first results and design from the redshift z~9-10 Brightest of the Reionizing Galaxies {\it Hubble Space Telescope} survey BoRG[z9-10], aimed at searching for intrinsically luminous unlensed galaxies during the first 700 Myr after the Big Bang. BoRG[z9-10] is the continuation of a multi-year pure-parallel near-IR and optical imaging campaign with the Wide Field Camera 3. The ongoing survey uses five filters, optimized for detecting the most distant objects and offering continuous wavelength coverage from λ=0.35μm to λ=1.7μm. We analyze the initial ~130 arcmin${}^2$ of area over 28 independent lines of sight (~25% of the total planned) to search for z>7 galaxies using a combination of Lyman break and photometric redshift selections. From an effective comoving volume of (5-25) $times10^5$ Mpc${}^3$ for magnitudes brighter than $m_{AB}=26.5-24.0$ in the $H_{160}$-band respectively, we find five galaxy candidates at z~8.3-10 detected at high confidence (S/N>8), including a source at z~8.4 with mAB=24.5 (S/N~22), which, if confirmed, would be the brightest galaxy identified at such early times (z>8). In addition, BoRG[z9-10] data yield four galaxies with $7.3\lesssim z\lesssim 8$. These new Lyman break galaxies with m$\lesssim 26.5$ are ideal targets for follow-up observations from ground and space based observatories to help investigate the complex interplay between dark matter growth, galaxy assembly, and reionization.

arXiv commentAccepted for publication on ApJ. 21 pages, 11 figures, 4 tables

References in corpus (69)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• Cosmic-Ray Rejection by Laplacian Edge Detection
• Lyman Break Galaxies at z>4 and the Evolution of the UV Luminosity Density at High Redshift
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• Bayesian photometric redshift estimation
• Cluster Lensing And Supernova survey with Hubble (CLASH): An Overview
• The Evolution of the Galaxy Rest-Frame Ultraviolet Luminosity Function Over the First Two Billion Years
• The Abundance of Star-Forming Galaxies in the Redshift Range 8.5 to 12: New Results from the 2012 Hubble Ultra Deep Field Campaign
• Galaxies in the Hubble Ultra Deep Field: I. Detection, Multiband Photometry, Photometric Redshifts, and Morphology
• Keck Spectroscopy of Faint 3<z<7 Lyman Break Galaxies: - I. New constraints on cosmic reionisation from the luminosity and redshift-dependent fraction of Lyman-alpha emission
• A new multi-field determination of the galaxy luminosity function at z=7-9 incorporating the 2012 Hubble Ultra Deep Field imaging
• CLASH: Three Strongly Lensed Images of a Candidate z ~ 11 Galaxy
• Cosmic Variance and Its Effect on the Luminosity Function Determination in Deep High z Surveys
• The Most Luminous z~9-10 Galaxy Candidates yet Found: The Luminosity Function, Cosmic Star-Formation Rate, and the First Mass Density Estimate at 500 Myr
• The HST eXtreme Deep Field XDF: Combining all ACS and WFC3/IR Data on the HUDF Region into the Deepest Field Ever
• z~7-10 Galaxies in the HUDF and GOODS fields, and their UV Luminosity Functions
• WFPC2 Observations of the Hubble Deep Field-South
• Probing the Dawn of Galaxies at z~9-12: New Constraints from HUDF12/XDF and CANDELS Data
• The Galaxy UV Luminosity Function Before the Epoch of Reionization
• New observations of z~7 galaxies: evidence for a patchy reionization
• The Stellar Mass Density and Specific Star Formation Rate of the Universe at z~7
• A Rapidly Star-forming Galaxy 700 Million Years After the Big Bang at z=7.51
• Lyman-alpha Emission from a Luminous z=8.68 Galaxy: Implications for Galaxies as Tracers of Cosmic Reionization
• Lower-Luminosity Galaxies could reionize the Universe: Very Steep Faint-End Slopes to the UV Luminosity Functions at z>=5-8 from the HUDF09 WFC3/IR Observations
• The UV Luminosity Function of star-forming galaxies via dropout selection at redshifts z ~ 7 and 8 from the 2012 Ultra Deep Field campaign
• A Spectroscopic Redshift Measurement for a Luminous Lyman Break Galaxy at z=7.730 using Keck/MOSFIRE
• The Grism Lens-Amplified Survey from Space (GLASS). I. Survey overview and first data release
• Very Strong Emission-Line Galaxies in the WISP Survey and Implications for High-Redshift Galaxies
• The bright end of the galaxy luminosity function at z ~ 7: before the onset of mass quenching?
• The changing Lya optical depth in the range 6<z<9 from MOSFIRE spectroscopy of Y-dropouts
• UVUDF: Ultraviolet Through Near-infrared Catalog and Photometric Redshifts of Galaxies in the Hubble Ultra Deep Field
• The Galaxy Luminosity Function during the Reionization Epoch
• The 2012 Hubble Ultra Deep Field (UDF12): Observational Overview
• New redshift z ~ 9 galaxies in the Hubble Frontier Fields: Implications for early evolution of the UV luminosity density
• The Brightest of Reionizing Galaxies Survey: Constraints on the Bright End of the z~8 Luminosity Function
• J-PAS: The Javalambre-Physics of the Accelerated Universe Astrophysical Survey
• The Brightest Of Reionizing Galaxies Survey: Design and Preliminary Results
• The Bright End of the UV Luminosity Function at z~8: New Constraints from CANDELS Data in GOODS-South
• Discovery of a Very Bright Strongly-Lensed Galaxy Candidate at z ~ 7.6
• Through the looking GLASS: HST spectroscopy of faint galaxies lensed by the Frontier Fields cluster MACS0717.5+3745
• Smoothly-Rising Star Formation Histories During the Reionization Epoch
• A physical model for the 0 < z < 8 redshift evolution of the galaxy UV luminosity and stellar mass functions
• Frontier Fields: High-Redshift Predictions and Early Results
• The Luminosity Function at z~8 from 97 Y-band dropouts: Inferences About Reionization
• CLASH: A Census of Magnified Star-Forming Galaxies at z ~ 6-8
• The UDF05 Follow-up of the HUDF: I. The Faint-End Slope of the Lyman-Break Galaxy Population at z~5
• Ultradeep IRAC Imaging Over The HUDF And GOODS-South: Survey Design And Imaging Data Release
• Correcting the z~8 Galaxy Luminosity Function for Gravitational Lensing Magnification Bias
• Measurement of Galaxy Clustering at z~7.2 and the Evolution of Galaxy Bias from 3.8<z<8 in the XDF, GOODS-S AND GOODS-N
• Inferences on the distribution of Ly-alpha emission of z~7 and z~8 galaxies
• The UDF05 Follow-up of the HUDF: II. Constraints on Reionization from z-dropout Galaxies
• z~7 galaxy candidates from NICMOS observations over the HDF South and the CDF-S and HDF-N GOODS fields
• On the importance of using appropriate spectral models to derive physical properties of galaxies at 0.7<z<2.8
• The Sizes of Candidate $z\sim 9-10$ Galaxies: confirmation of the bright CANDELS sample and relation with luminosity and mass
• Overdensities of Y-dropout Galaxies from the Brightest-of-Reionizing Galaxies Survey: A Candidate Protocluster at Redshift z~8
• A distortion of very--high--redshift galaxy number counts by gravitational lensing
• A Tentative Detection of an Emission Line at 1.6 μm for the z~12 Candidate UDFj-39546284
• Hubble Space Telescope Observations of Field Ultracool Dwarfs at High Galactic Latitude
• Estimating Luminosity Function Constraints from High-Redshift Galaxy Surveys
• On Contamination and Completeness in z>5 Lyman Break Galaxy Surveys
• Milky Way Red Dwarfs in the BoRG Survey; Galactic scale-height and the distribution of dwarfs stars in WFC3 imaging
• The Impact of Strong Gravitational Lensing on Observed Lyman-Break Galaxy Numbers at 4<z<8 in the GOODS and the XDF Blank Fields
• A 52 hours VLT/FORS2 spectrum of a bright z~7 HUDF galaxy: no Ly-alpha emission
• The UDF05 Follow-up of the Hubble Ultra Deep Field. III. The Luminosity Function at z~6
• Verifying the Identity of High-Redshift Massive Galaxies Through the Clustering of Lower Mass Galaxies Around Them
• Distortion of the luminosity function of high-redshift galaxies by gravitational lensing
• Real or Interloper? The Redshift Likelihoods of z>8 Galaxies in the HUDF12

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• First Light And Reionisation Epoch Simulations (FLARES) IV: The size evolution of galaxies at $z\ge 5$
• HST imaging of the brightest z~8-9 galaxies from UltraVISTA: the extreme bright end of the UV luminosity function
• Forecasts for the WFIRST High Latitude Survey using the BlueTides Simulation
• The Physical Properties of Luminous $z\gtrsim 8$ Galaxies and Implications for the Cosmic Star Formation Rate Density From $\sim$0.35 deg${}^2$ of (Pure-)Parallel HST Observations
• The Super Eight Galaxies: Properties of a Sample of Very Bright Galaxies at $7<z<8$
• SuperBoRG: Exploration of point sources at $z\sim 8$ in HST parallel fields
• Galaxy candidates at z ~ 10 in archival data from the Brightest of Reionizing Galaxies (BoRG[z8]) survey
• Characterization and modeling of contamination for Lyman break galaxy samples at high redshift
• HST followup observations of two bright z ~ 8 candidate galaxies from the BoRG pure-parallel survey
• The Spitzer/IRAC Legacy over the GOODS Fields: Full-Depth 3.6, 4.5, 5.8 and 8.0um Mosaics and Photometry for > 9000 Galaxies at z~3.5-10 from the GOODS Re-ionization Era wide-Area Treasury from Spitzer (GREATS)
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• The UV luminosity functions of Bright z>8 Galaxies: Determination from ~0.41 deg2 of HST Observations along ~sim 300 independent sightlines
• To see or not to see a $z\sim 13$ galaxy, that is the question
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• Observational determination of the galaxy bias from cosmic variance with a random pointing survey: Clustering of z~2 galaxies from Hubble's BoRG survey
• Foreground and sensitivity analysis for broad band (2D) 21cm--Ly-alpha and 21cm--H-alpha correlation experiments probing the Epoch of Reionization
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