Uranium in the spectrum of an old star

Eso_eso0723b_1024

eso_eso0723b May 10th, 2007

Credit: ESO

The observed spectrum (dots) of the old star HE 1523-0901in the region of the uranium (U II) line at a wavelength of 385.96 nm. The origin of some of the other spectral lines in the region is also indicated (e.g. iron, neodymium, samarium, magnesium). The synthetic spectrum (thin and dotted lines) was computed for the adopted abundances of the stable elements and for four different values of the abundance 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.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso0723b/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

View Options

Download Options

Image Details

Image Type
Observation
Object Name
HE 1523-0901
Subject - Milky Way
Star

Color Mapping

  Telescope Spectral Band Wavelength
Grayscale VLT (UVES) Ultraviolet (UII) 385.0 nm
Spectrum_base
Grayscale
Eso_eso0723b_1280
×
ID
eso0723b
Subject Category
B.3  
Subject Name
HE 1523-0901
Credits
ESO
Release Date
2007-05-10T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0723b/
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
1184.0, 795.0
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
eso0723b
Metadata Date
2007-05-10T20:01:22+02:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.

 

Providers | Sign In