VLT/X-Shooter emission-line spectroscopy of 96 gamma-ray-burst-selected galaxies at 0.1 < z < 3.6

Simple item page
dc.contributor.authorKruehler, T.
dc.contributor.authorMalesani, D.
dc.contributor.authorFynbo, J. P. U.
dc.contributor.authorHartoog, O. E.
dc.contributor.authorHjorth, J.
dc.contributor.authorJakobsson, P.
dc.contributor.authorPerley, D. A.
dc.contributor.authorRossi, A.
dc.contributor.authorSchady, P.
dc.contributor.authorSchulze, S.
dc.contributor.authorTanvir, N. R.
dc.contributor.authorVergani, S. D.
dc.contributor.authorWiersema, K.
dc.contributor.authorAfonso, P. M. J.
dc.contributor.authorBolmer, J.
dc.contributor.authorCano, Z.
dc.contributor.authorCovino, S.
dc.contributor.authorD'Elia, V.
dc.contributor.authorde Ugarte Postigo, A.
dc.contributor.authorFilgas, R.
dc.contributor.authorFriis, M.
dc.contributor.authorGraham, J. F.
dc.contributor.authorGreiner, J.
dc.contributor.authorGoldoni, P.
dc.contributor.authorGomboc, A.
dc.contributor.authorHammer, F.
dc.contributor.authorJapelj, J.
dc.contributor.authorKann, D. A.
dc.contributor.authorKaper, L.
dc.contributor.authorKlose, S.
dc.contributor.authorLevan, A. J.
dc.contributor.authorLeloudas, G.
dc.contributor.authorMilvang Jensen, B.
dc.contributor.authorGuelbenzu, A. Nicuesa
dc.contributor.authorPalazzi, E.
dc.contributor.authorPian, E.
dc.contributor.authorPiranomonte, S.
dc.contributor.authorSanchez Ramirez, R.
dc.contributor.authorSavaglio, S.
dc.contributor.authorSelsing, J.
dc.contributor.authorTagliaferri, G.
dc.contributor.authorVreeswijk, P. M.
dc.contributor.authorWatson, D. J.
dc.contributor.authorXu, D.
dc.date.accessioned2024-01-10T13:09:55Z
dc.date.available2024-01-10T13:09:55Z
dc.date.issued2015
dc.description.abstractWe present data and initial results from VLT/X-Shooter emission-line spectroscopy of 96 galaxies selected by long gamma-ray bursts (GRBs) at 0.1 < z < 3.6, the largest sample of GRB host spectra available to date. Most of our GRBs were detected by Swift and 76% are at 0.5 < z < 2.5 with a median z(med) similar to 1.6. Based on Balmer and/or forbidden lines of oxygen, nitrogen, and neon, we measure systemic redshifts, star formation rates (SFR), visual attenuations (A(V)), oxygen abundances (12 + log(O/H)), and emission-line widths (sigma). We study GRB hosts up to z similar to 3.5 and find a strong change in their typical physical properties with redshift. The median SFR of our GRB hosts increases from SFRmed similar to 0.6 M circle dot yr(-1) at z similar to 0.6 up to SFRmed similar to 15 M circle dot yr(-1) at z similar to 2. A higher ratio of [O III]/[O II] at higher redshifts leads to an increasing distance of GRB-selected galaxies to the locus of local galaxies in the Baldwin-Phillips-Terlevich diagram. There is weak evidence for a redshift evolution in A(V) and similar to, with the highest values seen at z similar to 1.5 (A(V)) or z similar to 2 (sigma). Oxygen abundances of the galaxies are distributed between 12 + log(O/H) = 7.9 and 12 + log(O/H) = 9.0 with a median 12 + log(O/H)(med) similar to 8.5. The fraction of GRB-selected galaxies with super-solar metallicities is similar to 20% at z < 1 in the adopted metallicity scale. This is significantly less than the fraction of total star formation in similar galaxies, illustrating that GRBs are scarce in high metallicity environments. At z similar to 3, sensitivity limits us to probing only the most luminous GRB hosts for which we derive metallicities of Z less than or similar to 0.5 Z circle dot. Together with a high incidence of Z similar to 0.5 Z circle dot galaxies at z similar to 1.5, this indicates that a metallicity dependence at low redshift will not be dominant at z similar to 3. Significant correlations exist between the hosts' physical properties. Oxygen abundance, for example, relates to A(V) (12 + log(O/H) proportional to 0.17 A(V)), line width (12 + log(O/H) proportional to sigma(0.6)), and SFR (12 + log(O/H) proportional to SFR0.2). In the last two cases, the normalization of the relations shift to lower metallicities at z > 2 by similar to 0.4 dex. These properties of GRB hosts and their evolution with redshift can be understood in a cosmological context of star-forming galaxies and a picture in which the hosts' properties at low redshift are influenced by the tendency of GRBs to avoid the most metal-rich environments.
dc.description.funderDanish National Research Foundation
dc.description.funderEuropean Research Council under the European Union's Seventh Framework Program (FP7)/ERC
dc.description.funderLeibniz-Prize (DFG)
dc.description.funderCONICYT-Chile FONDECYT
dc.description.funderBasal
dc.description.funder"Millennium Institute of Astrophysics (MAS)" of Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo
dc.description.funderPRIN-INAF
dc.description.funderNASA through Hubble Fellowship - Space Telescope Science Institute (STScI)
dc.description.funderNASA
dc.description.funderSofja Kovalevskaja Award from the Alexander von Humboldt Foundation of Germany
dc.description.funderDFG
dc.description.funderBundesministerium fur Wirtschaft and Technologie through DLR (Deutsches Zentrum fur luft- und Raumfahrt e.V.)
dc.description.funderScience and Technology Facilities Council
dc.fechaingreso.objetodigital2024-05-07
dc.format.extent32 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/201425561
dc.identifier.issn1432-0746
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201425561
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77712
dc.identifier.wosidWOS:000361803900125
dc.information.autorucFísica;Schulze S;S/I;237742
dc.language.isoen
dc.nota.accesocontenido parcial
dc.publisherEDP SCIENCES S A
dc.revistaASTRONOMY & ASTROPHYSICS
dc.rightsacceso restringido
dc.subjectgamma-ray burst: general
dc.subjectgalaxies: high-redshift
dc.subjectgalaxies: star formation
dc.subjectgalaxies: evolution
dc.subjectMASS-METALLICITY RELATION
dc.subjectSTAR-FORMING GALAXIES
dc.subjectCORE-COLLAPSE SUPERNOVAE
dc.subjectFORMATION RATE DENSITY
dc.subjectLYMAN BREAK GALAXIES
dc.subjectRED HOST GALAXY
dc.subjectDAMPED LY-ALPHA
dc.subjectH-II REGIONS
dc.subjectSTELLAR MASS
dc.subjectLUMINOSITY FUNCTION
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleVLT/X-Shooter emission-line spectroscopy of 96 gamma-ray-burst-selected galaxies at 0.1 < z < 3.6
dc.typeartículo
dc.volumen581
sipa.codpersvinculados237742
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
VLT.X-Shooter emission-line spectroscopy of 96 gamma-ray-burst-selected galaxies at 0.1-z-3.6.pdf
Size:
83.65 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas