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  • Vergani, S. D. (author)

GRB 091127/SN 2009nz and the VLT/X-shooter spectroscopy of its host galaxy : probing the faint end of the mass-metallicity relation

  • Article/chapterEnglish2011

Publisher, publication year, extent ...

  • 2011-11-30
  • EDP Sciences,2011
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-70079
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-70079URI
  • https://doi.org/10.1051/0004-6361/201117726DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We perform a detailed study of the gamma-ray burst GRB 091127/SN 2009nz host galaxy at z = 0.490 using the VLT/X-shooter spectrograph in slit and integral-field unit (IFU) mode. From the analysis of the optical and X-ray afterglow data obtained from ground-based telescopes and Swift-XRT, we confirm the presence of a bump associated with SN 2009nz and find evidence of a possible jet break in the afterglow lightcurve. The X-shooter afterglow spectra reveal several emission lines from the underlying host, from which we derive its integrated properties. These properties agree with those of previously studied GRB-SN hosts and, more generally, with those of the long GRB host population. We use the Hubble Space Telescope and ground-based images of the host to determine its stellar mass (M⋆). Our results extend to lower M⋆ values the M-Z plot derived for the sample of long GRB hosts at 0.3 < z < 1.0 adding new information to probe the faint end of the M-Z relation and the shift of the LGRB host M-Z relation from that found from emission-line galaxy surveys. Thanks to the IFU spectroscopy, we can build the two-dimensional (2D) velocity, velocity dispersion, and star formation rate (SFR) maps. They show that the host galaxy has perturbed rotation kinematics with evidence of a SFR enhancement consistent with the afterglow position. Based on observations made with ESO Telescopes at Paranal Observatory under programmes ID 084.A-0260 and 086.A-0874.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Flores, H. (author)
  • Covino, S. (author)
  • Fugazza, D. (author)
  • Gorosabel, J. (author)
  • Levan, A. J. (author)
  • Puech, M. (author)
  • Salvaterra, R. (author)
  • Tello, J. C. (author)
  • de Ugarte Postigo, A. (author)
  • D'Avanzo, P. (author)
  • D'Elia, V. (author)
  • Fernández, M. (author)
  • Fynbo, J. P. U. (author)
  • Ghirlanda, G. (author)
  • Jelínek, M. (author)
  • Lundgren, A. (author)
  • Malesani, D. (author)
  • Palazzi, E. (author)
  • Piranomonte, S. (author)
  • Rodrigues, M. (author)
  • Sánchez-Ramírez, R. (author)
  • Terrón, V. (author)
  • Thöne, C. C. (author)
  • Antonelli, L. A. (author)
  • Campana, S. (author)
  • Castro-Tirado, A. J. (author)
  • Goldoni, P. (author)
  • Hammer, F. (author)
  • Hjorth, J. (author)
  • Jakobsson, P. (author)
  • Kaper, L. (author)
  • Melandri, A. (author)
  • Milvang-Jensen, B. (author)
  • Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle (author)
  • Tagliaferri, G. (author)
  • Tanvir, N. R. (author)
  • Wiersema, K. (author)
  • Wijers, R. A. M. J. (author)
  • Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences535, s. A127-0004-63611432-0746

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