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- Eta_Carinae abstract "Eta Carinae (abbreviated to η Carinae or η Car), formerly known as Eta Argus, is a stellar system containing at least two stars with a combined luminosity over five million times that of the Sun, located around 7500 light-years (2300 parsecs) distant in the direction of the constellation Carina. First recorded as a 4th magnitude star, it brightened considerably over the period 1837 to 1856 in an event known as the Great Eruption. Eta Carinae became the second brightest star in the sky between 11 and 14 March 1843 before fading well below naked eye visibility. It has brightened consistently since about 1940, peaking above magnitude 4.5 in 2014. Eta Carinae is circumpolar south of latitude 30°S, so it is never visible north of latitude 30°N.The two main stars of the Eta Carinae system have an eccentric orbit with a period of 5.54 years. The primary is a peculiar star similar to a luminous blue variable (LBV) that initially had at least 150 M☉ of which it has lost at least 30 M☉, and is expected to explode as a supernova in the astronomically near future. This is the only star known to produce ultraviolet laser emission. The secondary star is hot and also highly luminous, probably of spectral class O, around 30-80 times as massive as the Sun. The system is heavily obscured by the Homunculus Nebula, material ejected from the primary during the Great Eruption. It is a member of the Trumpler 16 open cluster within the much larger Carina Nebula. Although unrelated to the star or Nebula, the weak Eta Carinids meteor shower has a radiant very close to Eta Carinae.".
- Eta_Carinae thumbnail Eta_Carinae.jpg?width=300.
- Eta_Carinae wikiPageExternalLink etacar.fcaglp.unlp.edu.ar.
- Eta_Carinae wikiPageExternalLink index.html.
- Eta_Carinae wikiPageExternalLink index.html.
- Eta_Carinae wikiPageExternalLink vsp.pl?name=eta+car&aavsoscale=B&scaletype=visual&ccdtable=no&charttitle=&chartcomment=&fov=180&maglimit=6&resolution=150&dss=on&forcelines=off.
- Eta_Carinae wikiPageExternalLink eta-car.htm.
- Eta_Carinae wikiPageExternalLink details.cgi?aid=11725.
- Eta_Carinae wikiPageID "92385".
- Eta_Carinae wikiPageLength "107670".
- Eta_Carinae wikiPageOutDegree "274".
- Eta_Carinae wikiPageRevisionID "702695359".
- Eta_Carinae wikiPageWikiLink 30th_parallel_north.
- Eta_Carinae wikiPageWikiLink 30th_parallel_south.
- Eta_Carinae wikiPageWikiLink AGILE_(satellite).
- Eta_Carinae wikiPageWikiLink Absolute_magnitude.
- Eta_Carinae wikiPageWikiLink Absorbance.
- Eta_Carinae wikiPageWikiLink Absorption_spectroscopy.
- Eta_Carinae wikiPageWikiLink Accretion_disk.
- Eta_Carinae wikiPageWikiLink Advanced_Satellite_for_Cosmology_and_Astrophysics.
- Eta_Carinae wikiPageWikiLink Alpha_Centauri.
- Eta_Carinae wikiPageWikiLink American_Association_of_Variable_Star_Observers.
- Eta_Carinae wikiPageWikiLink Apparent_magnitude.
- Eta_Carinae wikiPageWikiLink Apsis.
- Eta_Carinae wikiPageWikiLink Arcturus.
- Eta_Carinae wikiPageWikiLink Argo_Navis.
- Eta_Carinae wikiPageWikiLink Ariel_5.
- Eta_Carinae wikiPageWikiLink Asterism_(astronomy).
- Eta_Carinae wikiPageWikiLink Astronaut.
- Eta_Carinae wikiPageWikiLink Astronomical_unit.
- Eta_Carinae wikiPageWikiLink Astrophysical_maser.
- Eta_Carinae wikiPageWikiLink Bayer_designation.
- Eta_Carinae wikiPageWikiLink Benjamin_Apthorp_Gould.
- Eta_Carinae wikiPageWikiLink Beta_Centauri.
- Eta_Carinae wikiPageWikiLink Binary_star.
- Eta_Carinae wikiPageWikiLink Bipolar_nebula.
- Eta_Carinae wikiPageWikiLink Black_hole.
- Eta_Carinae wikiPageWikiLink Bortle_scale.
- Eta_Carinae wikiPageWikiLink Boss_General_Catalogue.
- Eta_Carinae wikiPageWikiLink Bremsstrahlung.
- Eta_Carinae wikiPageWikiLink Bright_Star_Catalogue.
- Eta_Carinae wikiPageWikiLink CNO_cycle.
- Eta_Carinae wikiPageWikiLink Canopus.
- Eta_Carinae wikiPageWikiLink Carina_(Chinese_astronomy).
- Eta_Carinae wikiPageWikiLink Carina_(constellation).
- Eta_Carinae wikiPageWikiLink Carina_Nebula.
- Eta_Carinae wikiPageWikiLink Carina_OB1.
- Eta_Carinae wikiPageWikiLink Carina–Sagittarius_Arm.
- Eta_Carinae wikiPageWikiLink Category:B-type_hypergiants.
- Eta_Carinae wikiPageWikiLink Category:Bayer_objects.
- Eta_Carinae wikiPageWikiLink Category:Binary_stars.
- Eta_Carinae wikiPageWikiLink Category:Carina_(constellation).
- Eta_Carinae wikiPageWikiLink Category:Carina_Nebula.
- Eta_Carinae wikiPageWikiLink Category:Durchmusterung_objects.
- Eta_Carinae wikiPageWikiLink Category:HR_objects.
- Eta_Carinae wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Eta_Carinae wikiPageWikiLink Category:Luminous_blue_variables.
- Eta_Carinae wikiPageWikiLink Category:O-type_stars.
- Eta_Carinae wikiPageWikiLink Cerro_Tololo_Inter-American_Observatory.
- Eta_Carinae wikiPageWikiLink Chandra_X-ray_Observatory.
- Eta_Carinae wikiPageWikiLink Chinese_astronomy.
- Eta_Carinae wikiPageWikiLink Chinese_constellations.
- Eta_Carinae wikiPageWikiLink Circumpolar_star.
- Eta_Carinae wikiPageWikiLink Circumstellar_dust.
- Eta_Carinae wikiPageWikiLink Colliding-wind_binary.
- Eta_Carinae wikiPageWikiLink Color–color_diagram.
- Eta_Carinae wikiPageWikiLink Constellation.
- Eta_Carinae wikiPageWikiLink Cosmic_dust.
- Eta_Carinae wikiPageWikiLink Cyano_radical.
- Eta_Carinae wikiPageWikiLink Differential_rotation.
- Eta_Carinae wikiPageWikiLink Doppler_effect.
- Eta_Carinae wikiPageWikiLink Dosimetry.
- Eta_Carinae wikiPageWikiLink Durchmusterung.
- Eta_Carinae wikiPageWikiLink Edmond_Halley.
- Eta_Carinae wikiPageWikiLink Effective_temperature.
- Eta_Carinae wikiPageWikiLink Einstein_Observatory.
- Eta_Carinae wikiPageWikiLink Electronvolt.
- Eta_Carinae wikiPageWikiLink Equivalent_width.
- Eta_Carinae wikiPageWikiLink Eta.
- Eta_Carinae wikiPageWikiLink Eta_Carinids.
- Eta_Carinae wikiPageWikiLink Extinction_(astronomy).
- Eta_Carinae wikiPageWikiLink Extremely_high_frequency.
- Eta_Carinae wikiPageWikiLink Far_infrared.
- Eta_Carinae wikiPageWikiLink Fermi_Gamma-ray_Space_Telescope.
- Eta_Carinae wikiPageWikiLink File:EtaCarinae.jpg.
- Eta_Carinae wikiPageWikiLink Forbidden_mechanism.
- Eta_Carinae wikiPageWikiLink Fraunhofer_lines.
- Eta_Carinae wikiPageWikiLink Frederick_de_Houtman.
- Eta_Carinae wikiPageWikiLink Gain_(laser).
- Eta_Carinae wikiPageWikiLink Gamma-ray_burst.
- Eta_Carinae wikiPageWikiLink Gamma_ray.
- Eta_Carinae wikiPageWikiLink Gould_designation.
- Eta_Carinae wikiPageWikiLink Gravity_darkening.
- Eta_Carinae wikiPageWikiLink H-alpha.
- Eta_Carinae wikiPageWikiLink HDE_316285.
- Eta_Carinae wikiPageWikiLink HD_90853.
- Eta_Carinae wikiPageWikiLink HD_93250.
- Eta_Carinae wikiPageWikiLink HD_93403.
- Eta_Carinae wikiPageWikiLink Henry_Draper_Catalogue.
- Eta_Carinae wikiPageWikiLink Hertzsprung–Russell_diagram.