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  2. Stellar population - Wikipedia

    en.wikipedia.org/wiki/Stellar_population

    Baade observed that bluer stars were strongly associated with the spiral arms, and yellow stars dominated near the central galactic bulge and within globular star clusters. [2] Two main divisions were defined as Population I star and population II , with another newer, hypothetical division called population III added in 1978.

  3. List of nearest stars by spectral type - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_stars_by...

    The first star to have its distance to Earth measured after the Sun. Also the 15th nearest stellar system to our solar system. ... Also the 20nd nearest star system ...

  4. List of nearest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_stars

    The star, whose mass is roughly half that of the Sun, is currently 62 light-years from the Solar System. It was first noticed in 1999 using data from the Hipparcos satellite, and was estimated to pass less than 1.3 light-years (0.40 pc) from the Sun in 1.4 million years. [73]

  5. HD 140283 - Wikipedia

    en.wikipedia.org/wiki/HD_140283

    HD 140283 (also known as the Methuselah star) is a metal-poor subgiant star about 200 light years away from the Earth in the constellation Libra, near the boundary with Ophiuchus in the Milky Way Galaxy.

  6. 51 Pegasi - Wikipedia

    en.wikipedia.org/wiki/51_Pegasi

    51 Pegasi (abbreviated 51 Peg), formally named Helvetios / h ɛ l ˈ v iː ʃ i ə s /, [12] is a Sun-like star located 50.6 light-years (15.5 parsecs) from Earth in the constellation of Pegasus. It was the first main-sequence star found to have an exoplanet (designated 51 Pegasi b , officially named Dimidium) orbiting it.

  7. WHL0137-LS - Wikipedia

    en.wikipedia.org/wiki/WHL0137-LS

    The previous most distant star, MACS J1149 Lensed Star 1, has a redshift of 1.49, and is now 14.4 billion light-years away. If it is a single star, Earendel has a temperature of 13,000 – 16,000 K and a luminosity of 631,000 – 3,981,000 L ☉ , depending on the magnification.

  8. Stellar evolution - Wikipedia

    en.wikipedia.org/wiki/Stellar_evolution

    Representative lifetimes of stars as a function of their masses The change in size with time of a Sun-like star Artist's depiction of the life cycle of a Sun-like star, starting as a main-sequence star at lower left then expanding through the subgiant and giant phases, until its outer envelope is expelled to form a planetary nebula at upper right Chart of stellar evolution

  9. Stellar isochrone - Wikipedia

    en.wikipedia.org/wiki/Stellar_isochrone

    Theoretical isochrones for near-solar metallicity and a range of ages. In stellar evolution, an isochrone is a curve on the Hertzsprung-Russell diagram, representing a population of stars of the same age but with different mass. [1] The Hertzsprung-Russell diagram plots a star's luminosity against its temperature, or equivalently, its color ...