Most Distant Galaxy

The Most Distant Galaxy
MAG Presentation
8 Jan 2010

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Discovery in Hubble Infra-red Ultra Deep Sky field 09 Location of the Field Ref: “New Cosmic Distance Record” Sky and Telescope Feb 2011 p16 “Spectroscopic confirmation of a galaxy at redshift z = 8.6”. Nature 467 (7318): 940–942. PDF version of this Paper	Hubble Ultra Deep Sky Field 09 Location of the UDF in the Sky
Candidate Galaxies – Dim and red (in Near Infrared) and in a relatively clear field UDFy-38135539	Location of Galaxy Image to be Studied
The Study European Southern Observatory at Cerro Paranal Spectroscopic study to measure the Redshift Very Large Telescope (8.2 m dia mirror) with SINFONI spectrometer 15 hour exposure M. D. Lehnert (Paris Observatory) N. P. H. Nesvadba J.G. Cuby A.M. Swinbank S. Morris, B. Cle´ment, C.J. Evans, M. N. Bremer S. Basa	View of the Cerro Paranal VLT ]
Result: Found Hydrogen Lyman ? line ?_o = 0.122 ? (ultraviolet) Metal poor Galaxies in early universe Measured: ?_meas = 1.16 ? (near infrared) Cosmic redshift z = (?_meas – ?_emit)/?_emit = 8.55 light travel time = 13.1 GLy time since Big Bang = 13.7 GLy distance (now) = 30.4 GLY Luminosity distance = 283 GLy Ref:Cosmic Caluclator: http:www.astro.ucla.ecu/~wright/CosmoCalc.html	Near Infrared Spectra of the Galaxy from VLT
ESO Video explaining the relationship of the galaxy with the re-ionization of the universe. www.eso.org Simulated image of the early universe in the re-ionization period when it was 600 Million years old. E.S.O.’s Most Distance Galaxy Ever Measured Video (4 minutes)	Simulated Early Universe
Illustration of the Evolution of the Universe and Re-ionization	Evolution of the Universe
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