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V838 Monocerotis, Hubble Space Telescope, 





    
        

            Rudy Pohl

V838 Monocerotis, Hubble Space Telescope

Technical card

Resolution: 2048x1402

Astrometry.net job: 2639034

Data source: Professional, scientific grade data

Description

V838 Monocerotis - Hubble Legacy Archive, NSA

Data acquisition: Hubble Legacy Archive, NASA
Data processing: Rudy Pohl

V838 Monocerotis (V838 Mon) is a red star in the constellation Monoceros about 20,000 light years (6 kpc) from the Sun.[7] The previously unknown star was observed in early 2002 experiencing a major outburst, and was possibly one of the largest known stars for a short period following the outburst. Originally believed to be a typical nova eruption, it was then identified as something completely different. The reason for the outburst is still uncertain, but several conjectures have been put forward, including an eruption related to stellar death processes and a merger of a binary star or planets.

The remnant is evolving rapidly. By 2009 its temperature had increased a bit (since 2005) to 3,270 K and its luminosity was 15,000 times solar, but its radius had decreased to 380 times that of the Sun although the ejecta continues to expand.[4] The opaque ejected dust cloud has completely engulfed a B-type companion. (Wikipedia)

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Rudy_Pohl
Rudy Pohl
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  • V838 Monocerotis, Hubble Space Telescope, 





    
        

            Rudy Pohl
    Original
  • V838 Monocerotis, Hubble Space Telescope, 





    
        

            Rudy Pohl
    H
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    V838 Monocerotis, Hubble Space Telescope, 





    
        

            Rudy Pohl
    I

Histogram

V838 Monocerotis, Hubble Space Telescope, 





    
        

            Rudy Pohl