Lyman-alpha Forest at z~2.0 in quasar spectrum

Eso_eso0013f_1024

eso_eso0013f April 6th, 2000

Credit: ESO

This chart shows a small part of the normalized UV-spectrum of the 16-mag QSO HE22-28 at z = 2.4, exposed for a total of 7.5 hours at spectral resolution about 40,000. It provides a fine illustration of the excellent quality of the reduced data from this instrument. Most of the lines are due to Lyman-alpha clouds at redshifts in the little-studied interval z = 1.9-2.1, cf. the text.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso0013f/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type
Observation
Object Name
QSO HE22-28
Subject - Distant Universe
Galaxy > Activity > AGN > Quasar

Color Mapping

  Telescope Spectral Band Wavelength
Pseudocolor VLT (UVES) Ultraviolet -
Eso_eso0013f_1280
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ID
eso0013f
Subject Category
D.5.3.2.1  
Subject Name
QSO HE22-28
Credits
ESO
Release Date
2000-04-06T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0013f/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope
Instrument
UVES
Color Assignment
Pseudocolor
Band
Ultraviolet
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
800.0, 392.0
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
http://www.eso.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
eso0013f
Metadata Date
2010-03-01T11:15:27+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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