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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 421727.0, MPI für Astronomie / Publikationen_mpia
Spectroscopic confirmation of an extreme starburst at redshift 4.547
Authors:Capak, Peter; Carilli, C. L.; Lee, N.; Aldcroft, T.; Aussel, H.; Schinnerer, E.; Wilson, G. W.; Yun, M. S.; Blain, A.; Giavalisco, M.; Ilbert, O.; Kartaltepe, J.; Lee, K. S.; McCracken, H.; Mobasher, B.; Salvato, M.; Sasaki, S.; Scott, K. S.; Sheth, K.; Shioya, Y.; Thompson, D.; Elvis, M.; Sanders, D. B.; Scoville, N. Z.; Tanaguchi, Y.
Date of Publication (YYYY-MM-DD):2008
Title of Journal:The Astrophysical Journal
Start Page:L53
End Page:L56
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We report the spectroscopic confirmation of a submillimeter galaxy (SMG) at z=4.547 with an estimated LIR = (0.5-2.0) × 1013 Lsolar. The spectra, mid-IR, and X-ray properties indicate the bolometric luminosity is dominated by star formation at a rate of >1000 Msolar yr-1. Multiple, spatially separated components are visible in the Lyalpha line with an observed velocity difference of up to 380 km s-1 and the object morphology indicates a merger. The best-fit spectral energy distribution and spectral line indicators suggest the object is 2-8 Myr old and contains >1010 Msolar of stellar mass. This object is a likely progenitor for the massive early-type systems seen at z~2. Based on observations taken at the Keck Observatory, the James Clerk Maxwell Telescope, the Institut de Radioastronomie Millimetrique 30 m telescope, the Galaxy Evolution Explorer, the Chandra X-Ray Observatory, the Hubble Space Telescope, the Very Large Array, the Subaru Telescope, the United Kingdom Infrared Telescope, and the Canada-France-Hawaii Telescope.
Free Keywords:Galaxies: Evolution; Galaxies: Formation; Galaxies: High-Redshift; Galaxies: Interactions; Galaxies: Starburst; Submillimeter
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL: [ID No:1]
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