The ESO UVES Advanced Data Products Quasar Sample-V. Identifying the Galaxy Counterpart to the sub-Damped Ly-alpha System towards Q2239-2949

Abstract

Gas flows in and out of galaxies are one of the key unknowns in todays' galaxy evolution studies. Because gas flows carry mass, energy and metals, they are believed to be closely connected to the star formation history of galaxies. Most of these processes take place in the circum-galactic medium (CGM) which remains challenging to observe in emission. A powerful tool to study the CGM gas is offered by combining observations of the gas traced by absorption lines in quasar spectra with detection of the stellar component of the same absorbing-galaxy. To this end, we have targeted the zabs=1.825 sub-Damped Ly-alpha absorber (sub-DLA) towards the zem=2.102 quasar 2dF J 223941.8-294955 (hereafter Q2239-2949) with the ESO VLT/X-Shooter spectrograph. Our aim is to investigate the relation between its properties in emission and in absorption. The derived metallicity of the sub-DLA with log N(HI) = 19.84+/-0.14 cm-2 is [M/H] >-0.75. Using the Voigt profile optical depth method, we measure Delta_v90(FeII)=64 kms-1. The sub-DLA galaxy counterpart is located at an impact parameter of 2."4+/-0."2 (20.8+/-1.7 kpc at z = 1.825). We have detected Ly-alpha and marginal [OII] emissions. The mean measured flux of the Ly-alpha line is F(Ly-alpha) ~ 5.7x10^-18 erg s-1 cm-2 A-1, corresponding to a dust uncorrected SFR of ~ 0.13 M(solar) yr-1.

arXiv comment9 pages, 7 figures, 2 tables, MNRAS accepted

References in corpus (55)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Star Formation in Galaxies Along the Hubble Sequence
• Composite Quasar Spectra From the Sloan Digital Sky Survey
• X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• On the Kinematics of the Damped Lyman Alpha Protogalaxies
• Evolution of the cosmological mass density of neutral gas from Sloan Digital Sky Survey II - Data Release 7
• Velocity-Metallicity Correlation for high-z DLA Galaxies: Evidence for a Mass-Metallicity Relation?
• Damped Lyman Alpha Systems in Galaxy Formation Simulations
• The 2dF QSO Redshift Survey - V. The 10k catalogue
• A Near-Infrared Spectral Template for Quasars
• Molecular hydrogen in high-redshift Damped Lyman-alpha systems: The VLT/UVES database
• An Atlas of z=5.7 and z=6.5 Ly alpha Emitters
• The ESO UVES Advanced Data Products Quasar Sample - II. Cosmological Evolution of the Neutral Gas Mass Density
• Damped Lyman-alpha and Lyman Limit Absorbers in the Cold Dark Matter Model
• 3D Lyman-alpha radiation transfer. III. Constraints on gas and stellar properties of z~3 Lyman break galaxies (LBG) and implications for high-z LBGs and Lyman-alpha emitters(LAEs)
• Reconciling the Metallicity Distributions of Gamma-ray Burst, Damped Lyman-alpha, and Lyman-break Galaxies at z=3
• Star Formation in Atomic Gas
• Moving mesh cosmology: characteristics of galaxies and haloes
• 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
• Detection of Lyman-alpha emission from a DLA galaxy: Possible implications for a luminosity-metallicity relation at z = 2-3
• A Group of Galaxies at Redshift 2.38
• Galactic and Circumgalactic OVI and its Impact on the Cosmological Metal and Baryon Budgets at 2<z<3.5
• Discovery of a compact gas-rich DLA galaxy at z = 2.2: evidences for a starburst-driven outflow
• Verifying the mass-metallicity relation in damped Lyman-alpha selected galaxies at 0.1<z<3.2
• A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - I. New Detections and Limits for Intervening and Associated Absorbers
• Galaxy counterparts of metal-rich damped Lyman-alpha absorbers - II. A solar-metallicity and dusty DLA at z_abs=2.58
• The physical properties of z>2 Lyman limit systems: new constraints for feedback and accretion models
• The missing metals problem. III How many metals are expelled from galaxies?
• Gas inflow and metallicity drops in star-forming galaxies
• HST Images of a Galaxy Group at z=2.81, and the Sizes of Damped Lyman Alpha Galaxies
• 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
• Comprehensive Study of a z = 2.35 DLA Galaxy: Mass, Metallicity, Age, Morphology and SFR from HST and VLT
• The ESO UVES Advanced Data Products Quasar Sample - VI. Sub-Damped Lyman-$\alpha$ Metallicity Measurements and the Circum-Galactic Medium
• Dust-depletion sequences in damped Lyman-α absorbers: a unified picture from low-metallicity systems to the Galaxy
• The Galaxy Counterparts of the two high-metallicity DLAs at z=2.412 and z=2.583 towards Q0918+1636
• NICMOS imaging search for damped Lya galaxies
• The evolution of neutral gas in damped Lyman $\alpha$ systems from the XQ-100 survey
• A Groundbased Imaging Study of Galaxies Causing DLA, subDLA, and LLS Absorption in Quasar Spectra
• Tracing the Cosmic Metal Evolution in the Low-Redshift Intergalactic Medium
• Nature of the Absorbing Gas associated with a Galaxy Group at z~0.4
• A MIKE + UVES survey of Sub-Damped Lyman-Alpha Systems at z<1.5
• New abundance determinations in z < 1.5 QSO absorbers: seven sub-DLAs and one DLA
• Do Damped and Sub-damped Lyman-alpha Absorbers Arise in Galaxies of Different Masses?
• On the mass-metallicity relation, velocity dispersion and gravitational well depth of GRB host galaxies
• A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - IV. Masses and Gas Flows
• GRB 021004: Tomography of a gamma-ray burst progenitor and its host galaxy
• The ESO UVES Advanced Data Products Quasar Sample - I. Dataset and New N_HI Measurements of Damped Absorbers
• A Lyα blob and zabs {\approx} zem damped Lyα absorber in the dark matter halo of the binary quasar Q 0151+048
• A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - V. Neutral and Ionised Phase Metallicities
• Ly-alpha emitters: blue dwarfs or supermassive ULIRGs? Evidence for a transition with redshift
• Emission line selected galaxies at $z=0.6-2$ in GOODS South: Stellar masses, SFRs, and large scale structure

Cited by in corpus (12)

• ALMA + VLT observations of a Damped Lyman-α absorbing galaxy: Massive, wide CO emission, gas-rich but with very low SFR
• Characterising the Circum-Galactic Medium of Damped Lyman-$\alpha$ Absorbing Galaxies
• Stellar masses, metallicity gradients and suppressed star formation revealed in a new sample of absorption selected galaxies
• A Unique View of AGN-Driven Molecular Outflows: The Discovery of a Massive Galaxy Counterpart to a $z=2.4$ High-Metallicity Damped Lyman-$\alpha$ Absorber
• Metallicity has followed local gravitational potential of galaxies since z=3
• Damped Ly-alpha Absorbers in Star-forming Galaxies at z < 0.15 Detected with the Hubble Space Telescope and Implications for Galaxy Evolution
• Absorption-selected galaxies trace the low-mass, late-type, star-forming population at $z\sim 2-3$
• Chemical enrichment and host galaxies of extremely-strong intervening DLAs towards quasars
• Probing the assembly of dwarf galaxies through cosmic time with damped Lyman-$\alpha$ absorption spectroscopy
• Exploring galaxy dark matter halos across redshifts with strong quasar absorbers
• MUSE-ALMA Haloes IX: Morphologies and Stellar Properties of Gas-rich Galaxies
• DLA and sub-DLA metallicity evolution: A case study of absorbers towards Q0338-0005