Observed spectrum of the old star CS 31082-001

Eso_eso0106b_1024

eso_eso0106b February 7th, 2001

Credit: ESO

The observed spectrum (dots) of the old star CS 31082-001 in the region of the uranium (U II) line at 385.96 nm. The origin of some of the other spectral lines in the region is also indicated (e.g. iron, neodymium). The synthetic spectrum (thin line) was computed for the adopted abundances of the stable elements and for four different values of the abundance (by number) of uranium atoms in the atmosphere of the star. The uppermost line (corresponding to no uranium at all) clearly does not fit the observed spectrum at all. The best fit is provided by the middle (red) line, representing a uranium abundance of approximately 6% of the solar value.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso0106b/

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
CS 31082-001
Subject - Milky Way
Star

Color Mapping

  Telescope Spectral Band Wavelength
Grayscale VLT (UVES) Ultraviolet (UII) 385.0 nm
Spectrum_base
Grayscale
Eso_eso0106b_1280
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ID
eso0106b
Subject Category
B.3  
Subject Name
CS 31082-001
Credits
ESO
Release Date
2001-02-07T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0106b/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope
Instrument
UVES
Color Assignment
Grayscale
Band
Ultraviolet
Bandpass
UII
Central Wavelength
385
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
1502.0, 1035.0
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
eso0106b
Metadata Date
2010-02-26T17:30:44+01:00
Metadata Version
1.1
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