Galaxy counterparts of intervening high-<i>z</i>sub-DLAs/DLAs and Mg ii absorbers towards gamma-ray bursts

Schulze, S.; Fynbo, J. P. U.; Milvang-Jensen, B.; Rossi, A.; Jakobsson, P.; Ledoux, C.; De, A.; Krühler, T.; Mehner, A.; Björnsson, G.; Chen, Hsiao‐Wen; Vreeswijk, P. M.; Perley, D.; Hjorth, J.; Levan, A. J.; Tanvir, N. R.; Ellison, Sara L.; Møller, Per; Worseck, G.; Chapman, R. W.; Dall'Aglio, Aldo; Letawe, Géraldine

doi:10.1051/0004-6361/201118647

Cited by 23 publications

(19 citation statements)

References 139 publications

(271 reference statements)

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“…On the night of 2013 August 1-2, we obtained deep imaging of the field of GRB 111008A using the ESO/VLT and FORS2 (Appenzeller et al 1998) to search for the counterparts of the host and for the intervening DLA in emission (as it has been done for, e.g., GRB 070721B; see Schulze et al 2012). Our FORS2 observations consisted of 31 dithered exposures of 3 minutes of integration time each in the z Gunn -band filter, which is centered around 9100 Å.…”

Section: Searching For Emission From the Host And From The Interveninmentioning

confidence: 99%

The Metallicity and Dust Content of a Redshift 5 Gamma-Ray Burst Host Galaxy

Sparre

Hartoog

Krühler

et al. 2014

ApJ

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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. ABSTRACTObservations of the afterglows of long gamma-ray bursts (GRBs) allow the study of star-forming galaxies across most of cosmic history. Here we present observations of GRB 111008A, from which we can measure metallicity, chemical abundance patterns, dust-to-metals ratio (DTM), and extinction of the GRB host galaxy at z = 5.0. The host absorption system is a damped Lyα absorber with a very large neutral hydrogen column density of log N(H i)/cm −2 = 22.30 ± 0.06 and a metallicity of [S/H] = −1.70 ± 0.10. It is the highest-redshift GRB with such a precise metallicity measurement. The presence of fine-structure lines confirms the z = 5.0 system as the GRB host galaxy and makes this the highest redshift where Fe ii fine-structure lines have been detected. The afterglow is mildly reddened with A V = 0.11 ± 0.04 mag, and the host galaxy has a DTM that is consistent with being equal to or lower than typical values in the Local Group.

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Section: Searching For Emission From the Host And From The Interveninmentioning

confidence: 99%

The Metallicity and Dust Content of a Redshift 5 Gamma-Ray Burst Host Galaxy

Sparre

Hartoog

Krühler

et al. 2014

ApJ

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“…Nevertheless, there is increasing evidence that they are associated with typically faint and low-mass galaxies (e.g. Djorgovski et al 1996;Moller & Warren 1998;Möller et al 2004;Fynbo et al 2010Fynbo et al , 2011Noterdaeme et al 2012;Schulze et al 2012;Noterdaeme et al 2012;Krogager et al 2013;Christensen et al 2014, and references therein), whereas DLAs at the higher end of their metallicity distribution have more massive counterparts (e.g. M ∼ 10 10 M Ma et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Dust-depletion sequences in damped Lyman-αabsorbers

Ledoux

Mattsson

et al. 2016

A&A

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We study metal depletion due to dust in the interstellar medium (ISM) to infer the properties of dust grains and characterize the metal and dust content of galaxies down to low metallicity and intermediate redshift z. We provide metal column densities and abundances of a sample of 70 damped Lyman-α absorbers (DLAs) towards quasars, observed at high spectral resolution with the Very Large Telescope (VLT) Ultraviolet and Visual Echelle Spectrograph (UVES). This is the largest sample of phosphorus abundances measured in DLAs so far. We use literature measurements for Galactic clouds to cover the high-metallicity end. We discover tight (scatter 0.2 dex) correlations between [Zn/Fe] and the observed relative abundances from dust depletion. This implies that grain growth in the ISM is an important process of dust production. These sequences are continuous in [Zn/Fe] from dust-free to dusty DLAs, and to Galactic clouds, suggesting that the availability of refractory metals in the ISM is crucial for dust production, regardless of the star formation history. We observe [S/Zn] up to ∼ 0.25 dex in DLAs, which is broadly consistent with Galactic stellar abundances. Furthermore, we find a good agreement between the nucleosynthetic pattern of Galactic halo stars and our observations of the least dusty DLAs. This supports recent star formation in low-metallicity DLAs. The derived depletions of Zn, O, P, S, Si, Mg, Mn, Cr, and Fe correlate with [Zn/Fe], with steeper slopes for more refractory elements. P is mostly not affected by dust depletion. We present canonical depletion patterns to be used as reference in future studies of relative abundances and depletion. We derive the total (dust-corrected) metallicity, typically −2 [M/H] tot 0 for DLAs, and scattered around solar metallicity for the Galactic ISM. The dust-to-metal ratio (DTM) increases with metallicity, again supporting the importance of grain growth for dust production. The dust extinction A V derived from the depletion is typically < 0.2 mag in DLAs. Finally, we derive elemental abundances in dust, which is key to understanding the dust composition and its evolution. We observe similar abundances of Mg, Si, and Fe in dust; this suggests that grain species such as pyroxenes and iron oxides are more important than olivine, but this needs to be confirmed by more detailed analysis. Overall, we characterize dust depletion, nucleosynthesis, and dust-corrected metallicity in DLAs, providing a unified picture from low-metallicity systems to the Galactic ISM.

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“…Therefore, GRBDLAs will be biased with respect to their selection, as GRBs are related to supernova explosions within galaxies (e.g., Kumar & Zhang 2015), and therefore are a priori associated with SFGs. GRB-DLAs have slightly different physical properties than QSO-DLAs, such as a different metallicity evolution (Cucchiara et al 2015), and only a small number of GRB-DLA sightlines have been studied, since the afterglows fade over time (Schulze et al 2012).…”

Section: Introductionmentioning

confidence: 99%

THE STAR FORMATION RATE EFFICIENCY OF NEUTRAL ATOMIC-DOMINATED HYDROGEN GAS IN THE OUTSKIRTS OF STAR-FORMING GALAXIES FROM z ∼ 1 TO z ∼ 3

Rafelski

Gardner

Fumagalli

et al. 2016

ApJ

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Current observational evidence suggests that the star formation rate (SFR) efficiency of neutral atomic hydrogen gas measured in damped Lyα systems (DLAs) atz 3 is more than 10 times lower than predicted by the Kennicutt-Schmidt (KS) relation. To understand the origin of this deficit, and to investigate possible evolution with redshift and galaxy properties, we measure the SFR efficiency of atomic gas atz 1,z 2, andz 3 around star-forming galaxies. We use new robust photometric redshifts in the Hubble Ultra Deep Field to create galaxy stacks in these three redshift bins, and measure the SFR efficiency by combining DLA absorber statistics with the observed rest-frame UV emission in the galaxies' outskirts. We find that the SFR efficiency of H I gas at > z 1 is ∼1%-3% of that predicted by the KS relation. Contrary to simulations and models that predict a reduced SFR efficiency with decreasing metallicity and thus with increasing redshift, we find no significant evolution in the SFR efficiency with redshift. Our analysis instead suggests that the reduced SFR efficiency is driven by the low molecular content of this atomic-dominated phase, with metallicity playing a secondary effect in regulating the conversion between atomic and molecular gas. This interpretation is supported by the similarity between the observed SFR efficiency and that observed in local atomic-dominated gas, such as in the outskirts of local spiral galaxies and local dwarf galaxies.

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Galaxy counterparts of intervening high-zsub-DLAs/DLAs and Mg ii absorbers towards gamma-ray bursts

Cited by 23 publications

References 139 publications

The Metallicity and Dust Content of a Redshift 5 Gamma-Ray Burst Host Galaxy

The Metallicity and Dust Content of a Redshift 5 Gamma-Ray Burst Host Galaxy

Dust-depletion sequences in damped Lyman-αabsorbers

THE STAR FORMATION RATE EFFICIENCY OF NEUTRAL ATOMIC-DOMINATED HYDROGEN GAS IN THE OUTSKIRTS OF STAR-FORMING GALAXIES FROM z ∼ 1 TO z ∼ 3

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