Detection of a Lyman-alpha Emission-Line Companion to the z=4.69 QSO BR1202-0725

Abstract

We report the detection of a nearby emission-line companion to the z=4.695 quasar BR1202-0725. Deep narrow-band exposures on this field from the UH 2.2 m show a Ly alpha flux of 1.5\times\ten{-16} ergs cm^{-2} s^{-1}. High-resolution HST WFC2 imaging in the F814W filter band shows continuum structure near the emission position, at 2.6" NW of the quasar, corresponding to a projected separation of ~7.5 h^{-1} kpc for \qnought=0.5, where h=\hnought/100\kms Mpc^{-1}. We discuss possible explanations for the combined line and color properties. The ionization is most likely produced by the quasar, but if due to underlying star formation would require a star formation rate of ~7 h^2 solar masses per yr.

12 pages LaTeX (aastex4.0 macros: aasms4.sty, flushrt.sty) plus 3 figures. To appear in the Astrophysical Journal Letters. Typo in original submission ("2" should have been "7" in luminosity: 7e42 h^{-2} ergs and in the star formation rate: 7 h^{-2} \msun per yr). Resubmitted with figures

References in corpus (2)

• Faintest Galaxy Morphologies from $HST$ WFPC2 Imaging of the Hawaii Survey Fields
• A Near-Infrared Search for Line Emission from Protogalaxies Using the W. M. Keck Telescope

Cited by in corpus (56)

• High-z Lyman-alpha Emitters. I. A Blank-Field Search for Objects Near Redshift z=3.4 in and around the Hubble Deep Field and the Hawaii Deep Field SSA22
• The Density of Lyman-alpha Emitters at Very High Redshift
• Molecular gas and dust around a radio-quiet quasar at redshift 4.7
• CO(1-0) in z >/~ 4 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs
• Superwind model of extended Lyman alpha emitters at high redshift
• A Galaxy at z=5.34
• Detection of Lyman-alpha Emitting Galaxies at Redshift z=4.55
• Extended Lyman Alpha Emission Around Young Quasars: a Constraint on Galaxy Formation
• High resolution imaging of molecular line emission from high redshift QSOs
• A 250 GHz Survey of High Redshift QSOs from the Sloan Digital Sky Survey
• MApping the Most Massive Overdensities (MAMMOTH) II -- Discovery of an Extremely Massive Overdensity BOSS1441 at $z=2.32$
• An Extremely Luminous Galaxy at z=5.74
• ALMA Observation of 158 micron [CII] Line and Dust Continuum of a z=7 Normally Star-forming Galaxy in the Epoch of Reionization
• Molecular gas at high redshift: jet-induced star formation?
• A Detection of [CII] line emission in the z=4.7 QSO BR1202-0725
• Extended Lyman alpha emission around bright quasars
• Strongly star-forming rotating disks in a complex merging system at z = 4,7 as revealed by ALMA
• MApping the Most Massive Overdensities Through Hydrogen (MAMMOTH) I: Methodology
• The anatomy of an extreme starburst within 1.3Gyr of the Big Bang revealed by ALMA
• The extended Lyman-alpha emission surrounding the z=3.04 radio-quiet QSO1205-30: Primordial infalling gas illuminated by the quasar?
• The Photometric Redshift Distribution and Evolutionary Properties of Galaxies up to z= 4.5 in the Field of the Quasar BR1202-0725
• Galaxies at z=4 and the Formation of Population II
• Search Techniques for Distant Galaxies
• An Imaging and Spectroscopic Study of the z=3.38639 Damped Lyman Alpha System in Q0201+1120: Clues to Star Formation Rate at High Redshift
• Varying [CII]/[NII] line ratios in the interacting system BR1202-0725 at z=4.7
• Sensitive Radio Observations of High Redshift Dusty QSOs
• A Search for Lyman alpha Emitters at Redshift 3.7
• On the Origin of Lyman$\alpha$ Blobs at High Redshift: Submillimetric Evidence for a Hyperwind Galaxy at z=3.1
• The Mysterious Absence of Neutral Hydrogen within One Mpc of a Luminous Quasar at Redshift 2.168
• Detection of CO(3-2) Emission at z=2.64 from the Gravitationally Lensed Quasar MG 0414+0534
• BR1202-0725: An Extreme Multiple Merger at z = 4.7
• Detection of CO (2-1) and Radio Continuum Emission from the z = 4.4 QSO BRI 1335-0417
• Detection of a CMB decrement towards the z = 3.8 quasar pair PC1643+4631A&B
• A QSO host galaxy and its Lyalpha emission at z=6.43
• Spitzer Observations of High Redshift QSOs
• Close companions to two high-redshift quasars
• On the Connection Between Metal Absorbers and Quasar Nebulae
• Herschel/PACS far-infrared photometry of two z>4 quasars
• Sensitive VLBI Observations of the z = 4.7 QSO BRI 1202-0725
• Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA
• The Ionised- and Cool-Gas Content of The BR1202-0725 System as seen by MUSE and ALMA
• Fluorescent Lyman-alpha Emission from Gas Near a QSO at Redshift 4.28
• Karl G. Jansky Very Large Array observations of cold dust and molecular gas in starbursting quasar host galaxies at z~4.5
• ALMA [NII] 205 micron Imaging Spectroscopy of the Interacting Galaxy System BRI 1202-0725 at Redshift 4.7
• An Intermediate-band imaging survey for high-redshift Lyman Alpha Emitters: The Mahoroba-11
• A coronagraphic absorbing cloud reveals the narrow-line region and extended Lyman-$\alpha$ emission of QSO J0823+0529
• Subaru Deep Spectroscopy of a Star-forming Companion Galaxy of BR 1202-0725 at $z=4.7$
• First [NII]122$\mu$m line detection in a QSO-SMG pair BRI 1202-0725 at $z=4.69$
• Emission Line Galaxies in the STIS Parallel Survey I: Observations and Data Analysis
• Dense and warm neutral gas in BR1202-0725 at z = 4.7 as traced by the [O I] 145 um line
• Star-formation at z=4.7 in the environment of the QSO BR1202-07
• New Constraints on the Molecular Gas in the Prototypical HyLIRGs BRI1202-0725 & BRI1335-0417
• Etching glass in the early Universe: Luminous HF and water emission in a QSO-SMG pair at z=4.7
• Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
• New High-Redshift Galaxies at $z$ = 5.8 - 6.5 in the Subaru Deep Field
• Measuring the Virial Temperature of Galactic Halos Through Electron Scattering of Quasar Emission Lines