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UY Scuti is a dust-enshrouded bright red supergiant [16] and is classified as a semiregular variable with an approximate pulsation period of 740 days. [ 5 ] [ 17 ] [ 18 ] Based on an old radius of 1,708 R ☉ , this pulsation would be an overtone of the fundamental pulsation period, or it may be a fundamental mode corresponding to a smaller radius.
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses (M ☉)) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around 5,000 K [K] (4,700 °C; 8,500 °F) or lower.
Mira (/ ˈ m aɪ r ə /), designation Omicron Ceti (ο Ceti, abbreviated Omicron Cet, ο Cet), is a red-giant star estimated to be 200–300 light-years from the Sun in the constellation Cetus. ο Ceti is a binary stellar system , consisting of a variable red giant (Mira A) along with a white dwarf companion ( Mira B ).
This red giant star will, one day, explode as a supernova. ... Astronomy News with The Cosmic Companion is also available as a weekly podcast, carried on all major podcast providers. Tune in every ...
R Aquilae is an aging red giant on the asymptotic giant branch [3] with a stellar classification that varies over time, between M5e and M9e, [2] where the 'e' suffix indicates emission features in the spectrum. The cooler spectral types occur near the minimum visual magnitude, and the hottest near maximum. [11]
Red supergiants develop deep convection zones reaching from the surface over halfway to the core and these cause strong enrichment of nitrogen at the surface, with some enrichment of heavier elements. [26] Some red supergiants undergo blue loops where they temporarily increase in temperature before returning to the red supergiant state. This ...
This is the nearest red giant to the Earth, and the fourth brightest star in the night sky. Pollux (β Geminorum) 9.06 ± 0.03 [90] AD The nearest giant star to the Earth. Spica (α Virginis A) 7.47 ± 0.54 [96] One of the nearest supernova candidates and the sixteenth-brightest star in the night sky. Regulus (α Leonis A) 4.16 × 3.14 [97]
A red giant is a luminous giant star of low or intermediate mass that is in a late phase of its evolution. Subcategories. This category has the following 7 ...