2000/01/31 by Yoshiaki Taniguchi, Yasuhiro Shioya, Martyn Hann · 2 citations
Engineering · Mathematics · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Engineering #Flow (mathematics) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Geometry #Line (geometry) #Luminosity #Mathematics #Mechanical engineering #Mechanics #Momentum (technical analysis) #Perpendicular #Physics #Power (physics) #Redshift #Star formation #Stellar, planetary, and galactic studies #Supernova #Thermodynamics #Tube (container) #Wave and Wind Energy Systems #astro-ph
paper · pdf · doi:10.1086/312557
16 pages, AASLaTeX, To appear in ApJ Letters
arxiv created 2000/01/31 · arxiv updated 2009/12/01 · openalex publication_date 2013/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/02
We propose a new model for the extended Lyalpha blobs found recently at high redshift (z approximately 3). The observational properties of these blobs are as follows: (1) the observed Lyalpha luminosities are approximately 1043 h-2 ergs s-1, (2) they appear elongated morphologically, (3) their sizes amount to approximately 100 kpc, (4) the observed line widths amount to approximately 1000 km s-1, and (5) they are not associated with strong radio continuum sources. All these observational properties seem to be explained in terms of galactic winds driven by successive supernova explosions shortly after the initial burst of massive star formation in the galactic centers. The observed number density of Lyalpha blobs ( approximately 3.4x10-5 h3 Mpc-3) may be explained if their present-day counterparts are elliptical galaxies with a luminosity above approximately 1L*.