Keck Spectroscopy and NICMOS Photometry of a Redshift z=5.60 Galaxy

Abstract

We present Keck LRIS spectroscopy along with NICMOS F110W (~J) and F160W (~H) images of the galaxy HDF4-473.0 (hereafter 4-473) in the Hubble Deep Field, with a detection of an emission line consistent with Ly-alpha at a redshift of z=5.60. Attention to this object as a high redshift galaxy was first drawn by Lanzetta, Yahil and Fernandez-Soto and appeared in their initial list of galaxies with redshifts estimated from the WFPC2 HDF photometry. It was selected by us for spectroscopic observation, along with others in the Hubble Deep Field, on the basis of the NICMOS F110W and F160W and WFPC2 photometry. For H_0 = 65 and q_0 = 0.125, use of simple evolutionary models along with the F814W (~I), F110W, and F160W magnitudes allow us to estimate the star formation rate (~13 M(solar)/yr). The colors suggest a reddening of E(B-V) ~ 0.06. The measured flux in the Ly-alpha line is approximately 1.0*10^(-17) ergs/cm/s and the restframe equivalent width, correcting for the absorption caused by intervening HI, is approximately 90AA. The galaxy is compact and regular, but resolved, with an observed FWHM of ~0.44". Simple evolutionary models can accurately reproduce the colors and these models predict the Ly-alpha flux to within a factor of 2. Using this object as a template shifted to higher redshifts, we calculate the magnitudes through the F814W and two NICMOS passbands for galaxies at redshifts 6 < z < 10.

accepted version--ApJ Letters, predicted high-z colors refined, improved references to earlier photometric redshift estimates, title changed

References in corpus (4)

• The Star Formation History of Field Galaxies
• The Density of Lyman-alpha Emitters at Very High Redshift
• A Galaxy at z=5.34
• A z=5.34 Galaxy Pair in the Hubble Deep Field

Cited by in corpus (93)

• Lyman Break Galaxies at z>4 and the Evolution of the UV Luminosity Density at High Redshift
• Bayesian photometric redshift estimation
• The Nature of High-Redshift Galaxies
• Reionization of the Inhomogeneous Universe
• Elemental Abundances in QSOs: Star Formation and Galactic Nuclear Evolution at High Redshifts
• A new catalog of photometric redshifts in the Hubble Deep Field
• Caltech Faint Galaxy Redshift Survey X: A Redshift Survey in the Region of the Hubble Deep Field North
• The abundance of high-redshift objects as a probe of non-Gaussian initial conditions
• A Redshift z = 6.56 Galaxy Behind the Cluster Abell 370
• The Discovery of a Luminous z=5.80 Quasar from the Sloan Digital Sky Survey
• A mean redshift of 2.8 for Swift gamma-ray bursts
• Resolving the Submillimeter Background: the 850-micron Galaxy Counts
• Radio Signatures of HI at High Redshift: Mapping the End of the ``Dark Ages''
• The Evolution of the Effective Equation of State of the IGM
• The Luminosity Function of Lyman Alpha Emitters at Redshift z~5.7
• Spectroscopic Confirmation of Three Redshift 5.7 Lyman-alpha Emitters from the Large Area Lyman Alpha Survey
• The Detectability of the First Stars and Their Cluster Enrichment Signatures
• Scattered Lyman-alpha Radiation Around Sources Before Cosmological Reionization
• Lyman Break Galaxies and the Star Formation Rate of the Universe at z~6
• Superwind model of extended Lyman alpha emitters at high redshift
• High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data
• A Radio Galaxy at z=5.19
• Optical and Near-IR Imaging of Ultra Steep Spectrum Radio Sources - The K-z diagram of radio and optically selected galaxies
• The Detectability of High Redshift Lyman Alpha Emission Lines Prior to the Reionization of the Universe
• A Faint Star-Forming System Viewed Through the Lensing Cluster Abell 2218: First Light at z~5.6?
• Observational Searches for Galaxies at z > 6
• Lyman Alpha Emitters at Redshift z=5.7
• The Hubble Deep Fields
• Spectroscopic Properties of the z=4.5 Lyman-alpha Emitters
• HST imaging and Keck Spectroscopy of z~6 I-band Drop-Out Galaxies in the ACS GOODS Fields
• Models for Dusty Lyman alpha Emitters at High Redshift
• The Earliest Luminous Sources and the Damping Wing of the Gunn-Peterson Trough
• Spectral Evidence for Widespread Galaxy Outflows at z>4
• Escape of Ionizing Radiation from High-Redshift Galaxies
• A Luminosity Function of Lyman Alpha Emitting Galaxies at Redshift 4.5
• The Abundance of Low-luminosity Lyman alpha Emitters at High Redshift
• Photon Consumption in Minihalos during Cosmological Reionization
• Serendipitously Detected Galaxies in the Hubble Deep Field
• Luminous Lyman Break Galaxies at z>5 and the Source of Reionization
• A z=5.34 Galaxy Pair in the Hubble Deep Field
• Spectral Templates from Multicolor Redshift Surveys
• Creating Spectral Templates from Multicolor Redshift Surveys
• An Extremely Luminous Galaxy at z=5.74
• The Unusual Infrared Object HDF-N J123656.3+621322
• Deficiency of large equivalent width Lyman-alpha emission in luminous Lyman break galaxies at z~5-6?
• Star Formation at z~6: i-dropouts in the ACS GTO fields
• Starburst galaxies and structure in the submillimetre background towards the Hubble Deep Field
• A Galactic Wind at z = 5.190
• Identifying the Reionization Redshift from the Cosmic Star Formation Rate
• The Nature of Lya Blobs: Supernova-Dominated Primordial Galaxies
• Lyman Break Galaxies at z~5: Luminosity Function
• Galaxy Formation at z~3: Constraints from Spatial Clustering
• A Galaxy at z = 6.545 and Constraints on the Epoch of Reionization
• One-Line Redshifts and Searches for High-Redshift Lyman-Alpha Emission
• The FORS Deep Field Spectroscopic Survey
• The evolution of galaxies from primeval irregulars to present-day ellipticals
• On the compared accuracy and reliability of spectroscopic and photometric redshift measurements
• Spectroscopy of z~6 i-dropout Galaxies: Frequency of Ly-alpha Emission and the Sizes of Ly-alpha Emitting Galaxies
• High-Redshift Galaxies: Their Predicted Size and Surface Brightness Distributions and Their Gravitational Lensing Probability
• A New High-Redshift Lyman alpha Emitter: Possible Superwind Galaxy at z = 5.69
• Search Techniques for Distant Galaxies
• The first galaxies: structure and stellar populations
• Emission-Line Galaxies from the NICMOS/HST GRISM Parallel Survey
• Discovery of a Color-Selected Quasar at z=5.50
• Five High-Redshift Quasars Discovered in Commissioning Imaging Data of the Sloan Digital Sky Survey
• Determining the Redshift of Reionization From the Spectra of High-Redshift Sources
• High-Redshift Galaxies in Cold Dark Matter Models
• Was GRB~980329 at z ~ 5?
• X-Ray Emission from the First Quasars
• Constraints to the evolution of Ly-Alpha bright galaxies between z=3 and z=6
• Lyman Break Galaxies at z~5: Rest-frame UV Spectra II
• The Damping Wing of the Gunn-Peterson Absorption and Lyman-Alpha Emitters in the Pre-Reionization Era
• Polarization of the \lya Halos Around Sources Before Cosmological Reionization
• A NICMOS search for high redshift elliptical galaxy candidates
• A Serendipitous Search for High-Redshift Lyman alpha Emission: Two Primeval Galaxy Candidates at z~3
• Observing the First Stars and Black Holes
• Lyman$\alpha$ Emitters beyond Redshift 5:The Dawn of Galaxy Formation
• An Intermediate-band imaging survey for high-redshift Lyman Alpha Emitters: The Mahoroba-11
• A Simple Prediction on the Surface Density of Galaxies at z ~ 6
• Predictions of mixed non-Gaussian cosmological density fields for the cosmic microwave background radiation
• Predictions for the Counts of Faint, High-Redshift Galaxies in the Mid-Infrared
• Deep Galaxy Surveys in the 9150 A Airglow Window
• Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
• Spectra from Forming Region of the First Galaxies : The Effect of Aspherical Deceleration
• Non-Gaussianity vs. non-linearity of cosmological perturbations
• Candidate High Redshift and Primeval Galaxies in Hubble Deep Field South
• The Highest Redshift Radio Galaxies
• High Redshift Candidates and the Nature of Small Galaxies in the Hubble Deep Field
• On the large-scale structure of galactic disks
• Galaxies at High Redshift
• The Discovery of a Very Narrow-Line Star Forming Obat a Redshift of 5.66ject
• From z>6 to z~2: Unearthing Galaxies at the Edge of the Dark Ages
• The Most Distant Galaxies