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[Observatory]
[Sky Map]                          CASSIOPEIA A
[Category Listing]
[Chronological Listing]            Object Category:
[Photo Album Tutorial]             Supernova Remnant, Shell  [Chandra Cas A X-ray Image]
[Key to Terms]                     type
[Search]                           Coordinates: (J2000)              NASA/CXC/SAO
                                   Right Ascension
                                   23h23m26s
  [Visit the Chandra Chronicles]   Declination +58œ8'53.4"
                                   Constellation: Cassiopeia (Cas)
                                   See It Yourself: Locate Cas A in the sky
                                   Object Description: Cas A is the remnant of a star that
                                   exploded about 300 years ago. The X-ray image shows an
                                   expanding shell of hot gas produced by the explosion.
                                   This gaseous shell is about 10 light years in diameter,
                                   and has a temperature of about 50 million degrees.
                                   Handout: Chandra Image with Caption

                                   Multi-wavelength Images: (all images to same scale)

                                    [X-ray Label][Cas A - Chandra [Optical Label][Ca[Infrared Label] [C[Radio Label]e[Cas A - radio]
                                           NASA/CXC/SAO:             MDM Obs.:            ISO:
                                            Jpg (256 k)             Jpg (391 k)        Jpg (66 k)           VLA:
                                           Tiff (3.8 MB)            Tif (7.4 MB)      Tif (6.2 MB)       Jpg (160 k)
                                            PS (6.4 MB)             PS (6.3 MB)        PS (6.4 MB)      Tif (7.2 MB)
                                                                                                         PS (6.4 MB)

                                  What do these images tell us?    [SPACER]   More Chandra images of Cas A

                                  Chandra Observation Date: August 19
                                  Observation Time: 5,000 seconds
                                  Astronomer's Notebook: ACIS detector

                                   More Information on Cassiopeia A:

                                   Cas A in Context
                                   Press Room: Cas A Fact Sheet
                                   Press Room: Image Caption
                                   Cas A X-ray vs. Optical (Quick Time movie,
                                   2.3 Mb)
                                   Cas A X-ray vs. Optical (Animated Gif, 1.6
                                   Mb)

                                   More Information on Supernova Remnants:

                                   X-ray Astronomy Field Guide: Supernovae
                                   Multimedia: Supernova Explosion (Quick Time
                                   Animation)
                                   Related Activities: Supernova Word Search
                                   (java enhanced)

                                  [Link to First Chandra Targets]
                                  Cas A in Context              Cas A Index
                                  Constellation                 More on Supernovae
                                  Cassiopeia                    Supernova Word
                                  Locate Cas A in the           Search
                                  Sky                   [Image] PKS 0637-752
                                  What Do the Images            Note on Cosmic
                                  Tell Us?                      Distances
                                  Cas A Fact Sheet
                                  (Press)

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                              Revised: 12/17/99