Spectrum of quasar PKS 1232+0815 with neutral carbon lines at z=2.34

Eso_eso0043a_1024

eso_eso0043a December 20th, 2000

Credit: ESO

A small part of the spectrum of the distant quasar PKS 1232+0815, as obtained with the UVES spectrograph at the 8.2-m VLT KUEYEN telescope at Paranal. Some carbon absorption lines from an intervening cloud are identified, that are sensitive to the Cosmic Microwave Background Radiation (CMBR). Technical information about the photo: itis based on observations with the UVES high-dispersion spectrograph at the VLT 8.2-m KUEYEN telescope at Paranal, obtained on April 5 and 7, 2000. It shows a part of the spectrum of the quasar PKS 1232+0815 (V = 18.4; z = 2.57), with the redshifted, ultraviolet absorption lines of neutral carbon in an intervening cloud (z = 2.34). Lines from the same excitation levels are connected. The observed spectrum is fully drawn; the best model fit is indicated with a dashed curve. The wavelength is given in ngstrom units (1 nm = 10 ). The slit width was 1 arcsec; the spectral resolution about 45,000 and the integration lasted 3 hours.

Image Source: https://www.eso.org/public/images/eso0043a/

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
PKS 1232+0815
Subject - Distant Universe
Galaxy > Activity > AGN > Quasar

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_grayscale Very Large Telescope (UVES) Ultraviolet -
Eso_eso0043a_1280
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ID
eso0043a
Subject Category
D.5.3.2.1  
Subject Name
PKS 1232+0815
Credits
ESO
Release Date
2000-12-20T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0043a/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope
Instrument
UVES
Color Assignment
Grayscale
Band
Ultraviolet
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
1222.0, 649.0
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
eso0043a
Metadata Date
2010-02-26T14:14:13+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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