WebFor half the Sun’s mass the luminosity would be ~0.09x the Sun. Because massive stars consume their fuel more rapidly than less massive stars, their lifetimes are correspondingly much shorter: 2.5 TMLIFE So a star twice as massive as the Sun has a lifetime ~0.18x the Sun’s 10 billion years. WebApr 29, 2016 · Alpha Arietis, called Hamal, is an orange giant with an apparent magnitude of 2.0, making it the brightest star in the constellation. Located 66 light-years from Earth, …
Eltanin (Gamma Draconis): Star Type, Name, Location ... - Star …
Hamal is radiating about 91 [9] times the Sun's luminosity from its outer envelope at an effective temperature of 4,480 K. [9] This is cooler than the surface of the Sun, giving it the orange-hued glow of a K-type star. It is suspected to be slightly variable, with an amplitude of 0.06 magnitude. [5] See more Hamal /ˈhæməl/, designated Alpha Arietis (α Arietis, abbreviated Alpha Ari, α Ari), is the brightest star in the northern zodiacal constellation of Aries. With an apparent visual magnitude of 2.0, it is the mean See more The spectrum of this star matches a stellar classification of K2 III Ca-1, with the luminosity class of III indicating that it is an evolved giant star that has exhausted the supply of hydrogen … See more • Jean Schneider (2011). "Notes for star alf Ari". Extrasolar Planets Encyclopaedia. Retrieved 12 October 2011. • GJ 84.3, entry in the Gliese–Jahreiß catalogue (Preliminary … See more Alpha Arietis is the star's Bayer designation. It also bears the Flamsteed designation of 13 Arietis. The traditional name Hamal (also written Hemal, Hamul, Ras Hammel) derives from the Arabic رأس الحمل rās al-ħamal "head of the ram", in turn from … See more Hamal's orientation with relation to the Earth's orbit around the Sun gives it a certain importance not apparent from its modest brightness. … See more http://astropixels.com/stars/brightstars.html breech\u0027s fd
Hamal (α Arietis) Facts, Information, History & Definition
WebHamal is an orange giant of spectral type K2III or K2IIICa (where “Ca” indicates the presence of calcium lines in its emission spectrum). Including the infrared radiation it emits, it shines with a luminosity 90 times greater than that of the Sun, with a surface temperature of 4590 K. Its metallicity is only 60% of the solar value, and its ... WebFeb 4, 2024 · Hamal is located at an estimated 65.8 light-years / 20.2 parsecs away from the Sun. It is the 50 th brightest star in the night sky, visible to the naked eye. Hamal has … http://stars.astro.illinois.edu/sow/hrd.html breech\u0027s fe