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η Carinae is found within the Carina Nebula, a giant star-forming region in the Carina–Sagittarius Arm of the Milky Way. The nebula is a prominent naked-eye object in the southern skies showing a complex mix of emission, reflection and dark nebulosity. η Carinae is known to be at the same distance as the Carina Nebula and its spectrum can ...
Several X-ray and gamma-ray sources have been detected around Eta Carinae, for example 4U 1037–60 in the 4th Uhuru catalogue and 1044–59 in the HEAO-2 catalog. The earliest detection of X-rays in the Eta Carinae region was from the Terrier-Sandhawk rocket, [ 60 ] followed by Ariel 5 , [ 61 ] OSO 8 , [ 62 ] and Uhuru [ 63 ] sightings.
The Cosmic Cliffs at the edge of NGC 3324, one of the first images taken by the James Webb Space Telescope. The Carina Nebula [7] or Eta Carinae Nebula [8] (catalogued as NGC 3372; also known as the Great Carina Nebula [9]) is a large, complex area of bright and dark nebulosity in the constellation Carina, located in the Carina–Sagittarius Arm of the Milky Way galaxy.
Detailed look on Eta Carinae. Carina Nebula (left), Homunculus Nebula (center), and high resolution image of Eta Carinae (right). [10] Each lobe has polar "hole" although it is not known whether it is an actual gap in the shell of the lobe or just a deep indentation. Surrounding each polar hole is a "trench".
Luminous blue variable stars can undergo "giant outbursts" with dramatically increased mass loss and luminosity. η Carinae is the prototypical example, [20] with P Cygni showing one or more similar outbursts 300–400 years ago, [21] but dozens have now been catalogued in external galaxies.
Possible examples of supernova impostors include the Great Eruption of Eta Carinae, P Cygni, SN 1961V, [3] SN 1954J, SN 1997bs, SN 2008S in NGC 6946, and SN 2010dn [1] where detections of the surviving progenitor stars are claimed.
Great nebula in Carina, surrounding Eta Carinae. As the luminosity of stars increases greatly with mass, the luminosity of hypergiants often lies very close to the Eddington limit, which is the luminosity at which the radiation pressure expanding the star outward equals the force of the star's gravity collapsing the star inward.
Carina OB1 is a giant OB association in the Carina Nebula, [1] which is home to some of the most massive and luminous stars in the Milky Way Galaxy. It includes the young star clusters Collinder 228 , NGC 3293 , NGC 3324 , IC 2581 , Trumpler 14 , Trumpler 15 and Trumpler 16 , [ 2 ] the last being the home of Eta Carinae .