Molecular Gas Properties in the Host Galaxy of GRB080207

Abstract

We present the results of CO(1-0) and CO(4-3) observations of the host galaxy of a long-duration gamma-ray burst GRB080207 at z = 2.0858 by using the Karl G. Jansky Very Large Array and the Atacama Large Millimeter/submillimeter Array. The host is detected in CO(1-0) and CO(4-3), becoming the first case for a GRB host with more than two CO transitions detected combined with CO(2-1) and CO(3-2) in the literature. Adopting a metallicity-dependent CO-to-H2 conversion factor, we derive a molecular gas mass of Mgas = 8.7 x 10^10 Modot, which places the host in a sequence of normal star-forming galaxies in a Mgas-star-formation rate (SFR) plane. A modified blackbody fit to the far-infrared--millimeter photometry results in a dust temperature of 37 K and a dust mass of Mdust = 1.5 x 10^8 Modot. The spatially-resolving CO(4-3) observations allow us to examine the kinematics of the host. The CO velocity field shows a clear rotation and is reproduced by a rotation-dominated disk model with a rotation velocity of 350 km/s and a half-light radius of 2.4 kpc. The CO spectral line energy distribution derived from the four CO transitions is similar to that of starburst galaxies, suggesting a high excitation condition. Comparison of molecular gas properties between the host and normal (main-sequence) galaxies at similar redshifts shows that they share common properties such as gas mass fraction, gas depletion timescale, gas-to-dust ratio, location in the Mgas-SFR (or surface density) relation, and kinematics, suggesting that long-duration GRBs can occur in normal star-forming environments at z ~ 2.

arXiv comment14 pages, 8 figures, accepted for publication in ApJ

References in corpus (101)

• Galactic Stellar and Substellar Initial Mass Function
• Star Formation in Galaxies Along the Hubble Sequence
• The Global Schmidt Law in Star Forming Galaxies
• Star Formation in the Milky Way and Nearby Galaxies
• The CO-to-H2 Conversion Factor
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• [O III]/[N II] as an Abundance Indicator at High Redshift
• A very energetic supernova associated with the gamma-ray burst of 29 March 2003
• Metallicity Calibrations and the Mass-Metallicity Relation for Star-Forming Galaxies
• Spectroscopic Discovery of the Supernova 2003dh Associated with GRB 030329
• The SINS survey: SINFONI Integral Field Spectroscopy of z ~ 2 Star-forming Galaxies
• Cool Gas in High Redshift Galaxies
• AMAZE. I. The evolution of the mass-metallicity relation at z>3
• High molecular gas fractions in normal massive star forming galaxies in the young Universe
• A Study of the Gas-Star Formation Relation over Cosmic Time
• PHIBSS: molecular gas content and scaling relations in z~1-3 normal star forming galaxies
• The Progenitor Stars of Gamma-Ray Bursts
• Massive Molecular Outflows and Evidence for AGN Feedback from CO Observations
• Molecular Gas at High Redshift
• Different star formation laws for disks versus starbursts at low and high redshifts
• The SINS survey of z~2 galaxy kinematics: properties of the giant star forming clumps
• Combined CO & Dust Scaling Relations of Depletion Time and Molecular Gas Fractions with Cosmic Time, Specific Star Formation Rate and Stellar Mass
• A glimpse of the end of the dark ages: the gamma-ray burst of 23 April 2009 at redshift 8.3
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• The Evolving Interstellar Medium of Star Forming Galaxies Since z=2 as Probed by Their Infrared Spectral Energy Distributions
• xCOLD GASS: the complete IRAM-30m legacy survey of molecular gas for galaxy evolution studies
• COLD GASS, an IRAM legacy survey of molecular gas in massive galaxies: I. Relations between H2, HI, stellar content and structural properties
• GRB 090423 at a redshift of z~8.1
• A survey of molecular gas in luminous sub-millimetre galaxies
• Extremely Inefficient Star Formation in the Outer Disks of Nearby Galaxies
• Gas metallicity diagnostics in star-forming galaxies
• Low-Resolution Spectroscopy of Gamma-ray Burst Optical Afterglows: Biases in the Swift Sample and Characterization of the Absorbers
• Regularity underlying complexity: a redshift-independent description of the continuous variation of galaxy-scale molecular gas properties in the mass-star formation rate plane
• The Metallicity Dependence of the CO-to-H${}_2$ Conversion Factor from Observations of Local Group Galaxies
• The metallicity dependence of the CO {\rightarrow} H_2 conversion factor in z>1 star forming galaxies
• CO excitation of normal star forming galaxies out to z=1.5 as regulated by the properties of their interstellar medium
• The evolution of the dust temperatures of galaxies in the SFR$-M_{\ast }$ plane up to $z$$\sim$$2$
• The Star Formation Rate in the Reionization Era as Indicated by Gamma-ray Bursts
• Cosmic evolution of submillimeter galaxies and their contribution to stellar mass assembly
• The SINS/zC-SINF survey of z~2 galaxy kinematics: SINFONI adaptive optics-assisted data and kiloparsec-scale emission line properties
• Connecting the Gamma Ray Burst Rate and the Cosmic Star Formation History: Implications for Reionization and Galaxy Evolution
• The molecular gas in Luminous Infrared Galaxies I: CO lines, extreme physical conditions, and their drivers
• The nature of "dark" gamma-ray bursts
• Swift Identification of Dark Gamma-Ray Bursts
• Dust temperature and mid-to-total infrared color distributions for star-forming galaxies at 0<z<4
• A Population of Massive, Luminous Galaxies Hosting Heavily Dust-Obscured Gamma-Ray Bursts: Implications for the Use of GRBs as Tracers of Cosmic Star Formation
• Cosmological Gamma-Ray Bursts and Evolution of Galaxies
• The Host Galaxies of Swift Dark Gamma-Ray Bursts: Observational Constraints on Highly Obscured and Very High-Redshift GRBs
• The Swift GRB Host Galaxy Legacy Survey - II. Rest-Frame NIR Luminosity Distribution and Evidence for a Near-Solar Metallicity Threshold
• The SEDs and Host Galaxies of the dustiest GRB afterglows
• The Constant Average Relationship between Dust-obscured Star Formation and Stellar Mass from $z=0$ to $z=2.5$
• Probing Cosmic Chemical Evolution with Gamma-Ray Bursts: GRB060206 at z=4.048
• The First Positive Detection of Molecular Gas in a GRB Host Galaxy
• Molecular outflows in local ULIRGs: energetics from multi-transition OH analysis
• Low, Milky-Way like, Molecular Gas Excitation of Massive Disk Galaxies at z~1.5
• The Metal Aversion of LGRBs
• Are LGRBs biased tracers of star formation? Clues from the host galaxies of the Swift/BAT6 complete sample of LGRBs. I: Stellar mass at z<1
• A Theory for the Excitation of CO in Star Forming Galaxies
• A census of metals at high and low redshifts and the connection between submillimetre sources and spheroid formation
• GalPak3D: A Bayesian parametric tool for extracting morpho-kinematics of galaxies from 3D data
• A Consistent Study of Metallicity Evolution at 0.8 < z < 2.6
• The Swift Gamma-Ray Burst Host Galaxy Legacy Survey - I. Sample Selection and Redshift Distribution
• Probing the cosmic star formation using long Gamma-Ray Bursts: New constraints from the Spitzer Space Telescope
• High-resolution CO and radio imaging of z~2 ULIRGs: extended CO structures, and implications for the universal star formation law
• ALLSMOG: an APEX Low-redshift Legacy Survey for MOlecular Gas. I - molecular gas scaling relations, and the effect of the CO/H2 conversion factor
• Irradiated ISM: Discriminating between Cosmic Rays and X-rays
• GRB 100219A with X-shooter - abundances in a galaxy at z = 4.7
• CO emission and associated HI absorption from a massive gas reservoir surrounding the z=3 radio galaxy B3 J2330+3927
• Molecular Hydrogen in the Damped Lyman-alpha System towards GRB 120815A at z=2.36
• The nature of GRB-selected submillimeter galaxies: hot and young
• The warm, the excited, and the molecular gas: GRB 121024A shining through its star-forming galaxy
• The optically unbiased GRB host (TOUGH) survey. VI. Radio observations at z<1 and consistency with typical star-forming galaxies
• CO(1-0) line imaging of massive star-forming disc galaxies at z=1.5-2.2
• Massive stars formed in atomic hydrogen reservoirs: HI observations of gamma-ray burst host galaxies
• Optical Classification of Gamma-Ray Bursts in the Swift Era
• Gamma-Ray-Burst Host Galaxy Surveys at Redshift z>4: Probes of Star Formation Rate and Cosmic Reionization
• The optically unbiased GRB host (TOUGH) survey. V. VLT/X-shooter emission-line redshifts for Swift GRBs at z~2
• Connecting GRBs and ULIRGs: A Sensitive, Unbiased Survey for Radio Emission from Gamma-Ray Burst Host Galaxies at 0<z<2.5
• A deep search for the host galaxies of GRBs with no detected optical afterglow
• VLT/X-shooter spectroscopy of the GRB 120327A afterglow
• Gamma-Ray Bursts Trace UV Metrics of Star Formation over 3 < z < 5
• High Resolution Imaging of PHIBSS z~2 Main Sequence Galaxies in CO J=1-0
• The chemical enrichment of long-GRB nurseries up to z=2
• Radio Constraints on Heavily-Obscured Star-Formation within Dark Gamma-Ray Burst Host Galaxies
• Two gamma-ray bursts from dusty regions with little molecular gas
• The dark GRB080207 in an extremely red host and the implications for GRBs in highly obscured environments
• The extremely red host galaxy of GRB 080207
• CNO emission of an unlensed submillimeter galaxy at z=4.3
• First measurement of HI 21cm emission from a GRB host galaxy indicates a post-merger system
• Millimetric Properties of Gamma Ray Burst Host Galaxies
• Molecular gas masses of gamma-ray burst host galaxies
• Nobeyama Millimeter Array Observations of GRB 030329: a Decay of Afterglow with Bumps and Molecular Gas in the Host Galaxy
• A Detection of Molecular Gas Emission in the Host Galaxy of GRB 080517
• A Molecular gas rich GRB host galaxy at the peak of cosmic star formation
• Properties of the Interstellar Medium in Star-Forming Galaxies at z~1.4 revealed with ALMA
• Gas inflow and outflow in an interacting high-redshift galaxy: The remarkable host environment of GRB 080810 at $z=3.35$
• A Search for CO(J=3-2) Emission from the Host Galaxy of GRB 980425 with the Atacama Submillimeter Telescope Experiment
• A Revised Estimate of the CO (J=1-0) Emission from the Host Galaxy of GRB 030329 Using the Nobeyama Millimeter Array
• CO Observations of the Host Galaxy of GRB000418 at z = 1.1
• Constraining the Molecular Gas in the Environs of a z~8 Gamma Ray Burst Host Galaxy
• Gas-to-dust ratio in massive star-forming galaxies at z~1.4

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• ALMA CO Observations of the Host Galaxies of Long-duration Gamma-ray Bursts. I: Molecular Gas Scaling Relations
• ALMA observations of molecular gas in the host galaxy of AT2018cow
• Star-formation rates of two GRB host galaxies at z~2 and a [CII] deficit observed with ALMA
• Far-infrared star-formation rates of six GRB host galaxies with ALMA
• ALMA Host galaxy observation of the off-axis Gamma-Ray Burst XRF020903
• Molecular gas budget of strongly magnified low-mass star-forming galaxies at cosmic noon
• GRB host galaxies with strong H${}_2$ absorption: CO-dark molecular gas at the peak of cosmic star formation