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Hypergiant star currently undergoing a great dimming event HR 5171 Aa 4.1 ± 0.8: 1060–1160 [37] 11 740 ± 1630: Very Large Telescope – VLTI/PIONIER [38] 2014: Eclipsing and potential contact binary yellow hypergiant: WOH G64: 800 [39] ca. 160 000: Very Large Telescope – VLTI/GRAVITY [40] 2024 Star is in the Large Magellanic Cloud.
16 Tauri is a blue-white B-type subgiant with an apparent magnitude of +5.45. It is approximately 430 light years from the Sun; [5] about the same distance as the Pleiades. The interstellar extinction of this star is fairly small at 0.05 magnitudes. [11] The projected rotational velocity of the equator is 185 km/s. [8]
The Eddington limit is based on light pressure from the core of an already-formed star: As mass increases past ~150 M ☉, the intensity of light radiated from a Population I star's core will become sufficient for the light-pressure pushing outward to exceed the gravitational force pulling inward, and the surface material of the star will be ...
An extreme oxygen-rich red hypergiant that has experienced two dimming periods in the 20th century where the star became dimmer by up to 2.5 magnitudes. [16] Potentially the largest known star. [14] There is a possilbility that this size might be a bit overestimated (on the order of 1 sigma). Hence, the quoted radius might be just an upper ...
The first star in the list, Godzilla [1] — an LBV in the distant Sunburst galaxy — is probably the brightest star ever observed, although it is believed to be undergoing a temporary episode of increased luminosity that has lasted at least seven years, in a similar manner to the Great Eruption of Eta Carinae that was witnessed in the 19th ...
A novel method of determining the supergiant's mass was proposed in 2011, arguing for a current stellar mass of 11.6 M ☉ with an upper limit of 16.6 and lower of 7.7 M ☉, based on observations of the star's intensity profile from narrow H-band interferometry and using a photospheric measurement of roughly 4.3 AU or 955 ± 217 R ☉. [146]
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