The Most Distant Galaxy
MAG Presentation
8 Jan 2010
– Click on the Thumbnail image to see a larger image –
- 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 |
END |
– |
Created on … January 08, 2011
Larry B