Discovery of a damped Ly$\alpha$ galaxy at z $\sim$ 3 towards the quasar SDSS J011852+040644

Abstract

We report the detection of the host galaxy of a damped Ly$\alpha$ system (DLA) with log N(HI) $[\mathrm{c}{\mathrm{m}}^{-2}]$ = $21.0\pm 0.10$ at $z\approx 3.0091$ towards the background quasar SDSS J011852+040644 using the Palomar Cosmic Web Imager (PCWI) at the Hale (P200) telescope. We detect Ly$\alpha$ emission in the dark core of the DLA trough at a 3.3$\sigma$ confidence level, with Ly$\alpha$ luminosity of $L_{\mathrm{Ly}\alpha }$ $=(3.8\pm 0.8)\times 10^{42}\mathrm{erg}{\mathrm{s}}^{-1}$, corresponding to a star formation rate of $\gtrsim 2{\mathrm{M}}_{\odot }\mathrm{y}{\mathrm{r}}^{-1}$ (considering a lower limit on Ly$\alpha$ escape fraction $f_{esc}^{Ly\alpha }\sim 2\%$) as typical for Lyman break galaxies at these redshifts. The Ly$\alpha$ emission is blueshifted with respect to the systemic redshift derived from metal absorption lines by $281\pm 43$ km/s. The associated galaxy is at very small impact parameter of $\lesssim 12\mathrm{kpc}$ from the background quasar, which is in line with the observed anticorrelation between column density and impact parameter in spectroscopic searches tracing the large-scale environments of DLA host galaxies.

arXiv comment9 Pages, 5 Figures, Accepted for the Publication in ApJ

References in corpus (63)

• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• Star Formation in the Milky Way and Nearby Galaxies
• The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales
• A Study of the Gas-Star Formation Relation over Cosmic Time
• Damped Lyman alpha Systems
• Column density distribution and cosmological mass density of neutral gas: Sloan Digital Sky Survey-III Data Release 9
• On the (Non)Evolution of HI Disks over Cosmic Time
• Metallicity Evolution of Damped Lyman-alpha Systems out to z~5
• The Keck Lyman Continuum Spectroscopic Survey (KLCS): The Emergent Ionizing Spectrum of Galaxies at $z\sim 3$
• Lyman Alpha Radiation From Collapsing Protogalaxies I: Characteristics of the Emergent Spectrum
• Evolution of the cosmological mass density of neutral gas from Sloan Digital Sky Survey II - Data Release 7
• Lyman Alpha Emitting Galaxies as a Probe of Reionization
• On the redshift-evolution of the Lyman-alpha escape fraction and the dust content of galaxies
• The Multiwavelength Survey by Yale-Chile (MUSYC): Survey Design and Deep Public UBVRIz' Images and Catalogs of the Extended Hubble Deep Field South
• Velocity-Metallicity Correlation for high-z DLA Galaxies: Evidence for a Mass-Metallicity Relation?
• The evolution of Omega(HI) and the epoch of formation of damped Lyman-alpha absorbers
• A Population of Faint Extended Line Emitters and the Host Galaxies of Optically Thick QSO Absorption Systems
• The effect of the environment on the HI scaling relations
• Reconciling the local galaxy population with damped Ly-alpha cross sections and metal abundances
• Escape of about five per cent of Lyman-alpha photons from high-redshift star-forming galaxies
• The Relationship Between Stellar Populations and Lyman Alpha Emission in Lyman Break Galaxies
• Lyman alpha Radiative Transfer with Dust: Escape Fractions from Simulated High-Redshift Galaxies
• The Rapid Decline in Metallicity of Damped Ly-alpha Systems at z~5
• Mass-metallicity relation from z=5 to the present: Evidence for a transition in the mode of galaxy growth at z=2.6 due to the end of sustained primordial gas infall
• Galaxy Counterparts of metal-rich Damped Lyman-alpha Absorbers - I: The case of the z=2.35 DLA towards Q2222-0946
• The Fundamental Plane of Damped Lyman Alpha Systems
• IGM Emission Observations with the Cosmic Web Imager: I. The Circum-QSO Medium of QSO 1549+19, and Evidence for a Filamentary Gas Inflow
• On the Nature of Velocity Fields in High z Galaxies
• Detection of Lyman-alpha emission from a DLA galaxy: Possible implications for a luminosity-metallicity relation at z = 2-3
• Lyman alpha Resonant Scattering in Young Galaxies - Predictions from Cosmological Simulations
• Understanding the escape of LyC and Ly$\alpha$ photons from turbulent clouds
• The discovery of a galaxy-wide superwind from a young massive galaxy at redshift z~3
• Consensus report on 25 years of searches for damped Ly$\alpha$ galaxies in emission: Confirming their metallicity-luminosity relation at $z\gtrsim 2$
• Verifying the mass-metallicity relation in damped Lyman-alpha selected galaxies at 0.1<z<3.2
• Galaxy counterparts of metal-rich damped Lyman-alpha absorbers - II. A solar-metallicity and dusty DLA at z_abs=2.58
• A star-forming galaxy at z=5.78 in the Chandra Deep Field South
• A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - III. Three Additional Detections
• A connection between extremely strong Damped Lyman-alpha Systems and Lyman-alpha Emitting Galaxies at small impact parameters
• Deep SAURON Spectral-Imaging of the diffuse Lyman-alpha halo LAB1 in SSA22
• xGASS: Gas-rich central galaxies in small groups and their connections to cosmic web gas feeding
• Directly imaging damped Ly-alpha galaxies at z>2. III: The star formation rates of neutral gas reservoirs at z~2.7
• On the sizes of z>2 Damped Lyman-alpha Absorbing Galaxies
• The MUSE-Wide Survey: A determination of the Lyman $\alpha$ emitter luminosity function at $3<z<6$
• Filamentary Infall of Cold Gas and Escape of Lyman Alpha and Hydrogen Ionizing Radiation from an Interacting High-Redshift Galaxy
• The Magellan Uniform Survey of Damped Lyman alpha Systems I: Cosmic Metallicity Evolution
• Dissecting the Gaseous Halos of z~2 Damped Ly$\alpha$ Systems with Close Quasar Pairs
• NICMOS Imaging of a Damped Lyman-alpha Absorber at z=1.89 toward LBQS 1210+1731 : Constraints on Size and Star Formation Rate
• Witnessing galaxy assembly in an extended z~3 structure
• The gas mass of star-forming galaxies at $z\approx 1.3$
• The Composite Spectrum of BOSS Quasars Selected for Studies of the Lyman-alpha Forest
• Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyman alpha galaxies at z~3
• Molecular Emission from a Galaxy Associated with a z~2.2 Damped Lyman-alpha Absorber
• Directly imaging damped Ly-alpha galaxies at z>2. II: Imaging and spectroscopic observations of 32 quasar fields
• The Lyman-alpha emission of high-z damped Lyman-alpha systems
• First Connection between Cold Gas in Emission and Absorption: CO Emission from a Galaxy-Quasar Pair
• A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - II. Dynamical Properties of the Galaxies towards Q0302-223 and Q1009-0026
• Detection of emission lines from z ~ 3 DLAs towards the QSO J2358+0149
• The Star Formation Rate Efficiency of Neutral Atomic-dominated Hydrogen Gas in the Outskirts of Star Forming Galaxies from z~1 to z~3
• Urchin: A Reverse Ray Tracer for Astrophysical Applications
• ALMA observations of a metal-rich damped Lyα absorber at z = 2.5832: evidence for strong galactic winds in a galaxy group
• ALMACAL V: Absorption-selected galaxies with evidence for excited ISMs
• Uncovering strong MgII absorbing galaxies: Imaging below the Lyman limit
• The Ly$\alpha$ emission from high-$z$ galaxies hosting strong Damped Ly$\alpha$ systems

Cited by in corpus (3)

• MUSE-ALMA Haloes VII: Survey Science Goals & Design, Data Processing and Final Catalogues
• Damped Ly-alpha Absorbers in Star-forming Galaxies at z < 0.15 Detected with the Hubble Space Telescope and Implications for Galaxy Evolution
• A survey of Ly$\alpha$ emission around Damped Ly$\alpha$ absorbers at $z\approx 2$ with the Keck Cosmic Web Imager