Cassiopeia was one of the first radio sources discovered, in 1947. It is the strongest radio source in the sky outside of our solar system. The list of all annotations to SIMBAD objects can be found here. It is notable for being the brightest astronomical radio source in the sky. Most of the supernovae that occur in our Galaxy are not detected by observers on Earth, owing to extinction of their light by dust grains that are concentrated within the disk of the Galaxy.
CASSIOPEIA A PC
NED - NASA/IPAC Extragalactic Database : Cassiopeia AĪnnotations allow a user to add a note or report an error concerning the astronomical object and its data. The supernova remnant known as Cassiopeia A, the brightest radio source in the sky beyond the solar system, was produced by a supernova that occurred near 1680, but the event was subluminous and either was not noticed or was dismissed as an ordinary variable star. Cassiopeia A-11: Device Class: Handheld PC (Clamshell) Supported Windows CE Versions: Handheld PC 1.0 (Windows CE 1.00) Handheld PC 2.0 (Windows CE 2.00) Part Availability (Discontinued) RRP / MSRP: Street Price: Buying Resources: Search hpcBay on the HPC:Facctor Community Forums for this H/PC. In a recently published study led by the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), researchers propose a new scenario for.
CASSIOPEIA A ARCHIVE
HEASARC - High-Energy Astrophysics Science Archive Research Center The most famous case is called Cassiopeia A (Cas A): a stripped-envelope supernova remnant that is predicted to have a stellar companion, but nothing could be found in its explosive aftermath. Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
CASSIOPEIA A FULL
Information for this acronym in the dictionary of nomenclature.Īn access of full data is available using the icon Vizier near the identifier of the catalogue Cassiopeia A is now about 16 light-years across.The link on the acronym of the identifiers give access to the The expansion is most likely occurring in gas that was blown out by the star long before the explosion. A new image from NASAs Chandra X-ray Observatory shows the location of different elements in the. The Cassiopeia A explosion nebula is expanding at an average rate of 4,000 to 6,000 kilometers per second and has a temperature of about 30 million degrees Celsius. Cassiopeia A, or Cas A for short, is one of the most intensely studied of these supernova remnants. However, there was too much gas and dust around the star for the explosion to be seen with the naked eye or with the then very basic telescopes. Segin lies below the left knee of the queen. The star is 2,500 times more luminous than the Sun. It has an apparent visual magnitude of 3.34 and you can see it without using a telescope. Light from the explosion should have reached Earth for the first time around 1670. Segin, or Epsilon Cassiopeiae, is a bright blue-white giant that lies about 440 light-years away from Earth. Credit: J.Vink/Ĭassiopeia A is the remnant of an exploded star in the Cassiopeia constellation, about 11,000 light years away from us.
The red arrows show that the other remnants do expand outwards. The blue arrows on the right (astronomers call this the west side) show that the inner shell is not expanding outwards at this point, but inwards. Their finding has been accepted for publication in The Astrophysical Journal.Īn image of Cassiopeia A showing only two shells of nebulae. The astronomers suspect that the remains have collided with something.
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