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A PHOTOMETRIC REDSHIFT OF z similar to 9.4 FOR GRB 090429B
Cucchiara, A.1,2,3; Levan, A. J.4; Fox, D. B.1; Tanvir, N. R.5; Ukwatta, T. N.6,7; Berger, E.8; Kruehler, T.9,10; Yoldas, A. Kuepcue11,12; Wu, X. F.1,13; Toma, K.1; Greiner, J.9; Olivares E, F.9; Rowlinson, A.5; Amati, L.14; Sakamoto, T.7; Roth, K.15; Stephens, A.15; Fritz, Alexander15; Fynbo, J. P. U.16; Hjorth, J.16; Malesani, D.16; Jakobsson, P.17; Wiersema, K.5; O'Brien, P. T.5; Soderberg, A. M.8; Foley, R. J.8; Fruchter, A. S.18; Rhoads, J.19; Rutledge, R. E.20; Schmidt, B. P.21; Dopita, M. A.21; Podsiadlowski, P.22; Willingale, R.5; Wolf, C.22; Kulkarni, S. R.23; D'Avanzo, P.24
AbstractGamma-ray bursts (GRBs) serve as powerful probes of the early universe, with their luminous afterglows revealing the locations and physical properties of star-forming galaxies at the highest redshifts, and potentially locating first-generation (Population III) stars. Since GRB afterglows have intrinsically very simple spectra, they allow robust redshifts from low signal-to-noise spectroscopy, or photometry. Here we present a photometric redshift of z similar to 9.4 for the Swift detected GRB 090429B based on deep observations with Gemini-North, the Very Large Telescope, and the GRB Optical and Near-infrared Detector. Assuming a Small Magellanic Cloud dust law (which has been found in a majority of GRB sight lines), the 90% likelihood range for the redshift is 9.06 < z < 9.52, although there is a low-probability tail toward somewhat lower redshifts. Adopting Milky Way or Large Magellanic Cloud dust laws leads to very similar conclusions, while a Maiolino law does allow somewhat lower redshift solutions, though in all cases the most likely redshift is found to be z > 7. The non-detection of the host galaxy to deep limits (Y (AB) similar to 28, which would correspond roughly to 0.001L* at z = 1) in our late-time optical and infrared observations with the Hubble Space Telescope strongly supports the extreme-redshift origin of GRB 090429B, since we would expect to have detected any low-z galaxy, even if it were highly dusty. Finally, the energetics of GRB 090429B are comparable to those of other GRBs and suggest that its progenitor is not greatly different from those of lower redshift bursts.
KeywordEarly Universe Galaxies: High-redshift Gamma-ray Burst: Individual (Grb 090429r) Techniques: Photometric
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000292645600007
Citation statistics
Document Type期刊论文
Affiliation1.Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
2.Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
3.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
4.Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
5.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
6.George Washington Univ, Dept Phys, Washington, DC 20052 USA
7.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
8.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
9.Max Planck Inst Extraterr Phys, D-85740 Garching, Germany
10.Tech Univ Munich, D-85748 Garching, Germany
11.European So Observ, D-85748 Garching, Germany
12.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
13.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
14.INAF IASF Bologna, I-40129 Bologna, Italy
15.Gemini Observ, Hilo, HI 96720 USA
16.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen O, Denmark
17.Univ Iceland, Inst Sci, Ctr Astrophys & Cosmol, IS-107 Reykjavik, Iceland
18.Space Telescope Sci Inst, Baltimore, MD 21218 USA
19.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA
20.McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
21.Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia
22.Univ Oxford, Dept Phys, Oxford OX1 3RH, England
23.CALTECH, Dept Astron, Pasadena, CA 91125 USA
24.INAF Osservatorio Astron Brera, I-23807 Merate, Italy
Recommended Citation
GB/T 7714
Cucchiara, A.,Levan, A. J.,Fox, D. B.,et al. A PHOTOMETRIC REDSHIFT OF z similar to 9.4 FOR GRB 090429B[J]. ASTROPHYSICAL JOURNAL,2011,736(1).
APA Cucchiara, A..,Levan, A. J..,Fox, D. B..,Tanvir, N. R..,Ukwatta, T. N..,...&D'Avanzo, P..(2011).A PHOTOMETRIC REDSHIFT OF z similar to 9.4 FOR GRB 090429B.ASTROPHYSICAL JOURNAL,736(1).
MLA Cucchiara, A.,et al."A PHOTOMETRIC REDSHIFT OF z similar to 9.4 FOR GRB 090429B".ASTROPHYSICAL JOURNAL 736.1(2011).
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