Light echoes in RS Pup

Eso_eso0805b_500

eso_eso0805b February 11th, 2008

Credit: ESO

The nebula around RS Pup seen at 6 different epochs, corresponding to different phases of its 41.4 day cycle, as indicated in the top left part of each image. By monitoring both the light variation of the star (not visible on these images as it is positioned in the gap between the detectors) and the the light echoes from several features in the nebula, it is possible to determine the distance of the star. The changes in the nebula are for example very easy to detect in the middle part, just above and right to the two close foreground stars. The astronomers looked at the echoes produced by 7 nebular features, some of which are indicated on this image. The exposures were obtained randomly between 28 October 2006 and 24 March 2007 with EMMI on ESO's NTT at La Silla.

Image Source: https://www.eso.org/public/images/eso0805b/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Document
Object Name
RS Puppis
Subject - Milky Way
Star » Type » Variable

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_grayscale New Technology Telescope (EMMI) -
Eso_eso0805b_1280
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ID
eso0805b
Subject Category
B.3.2.1  
Subject Name
RS Puppis
Credits
ESO
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0805b/
Type
Document
Image Quality
Distance Notes
Facility
New Technology Telescope
Instrument
EMMI
Color Assignment
Grayscale
Band
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
3088.0, 2048.0
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
eso0805b
Metadata Date
2009-01-22T14:26:50+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.