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  2. G-type main-sequence star - Wikipedia

    en.wikipedia.org/wiki/G-type_main-sequence_star

    A G-type main-sequence star (spectral type: G-V), also often, and imprecisely, called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.9 to 1.1 solar masses and an effective temperature between about 5,300 and 6,000 K (5,000 and 5,700 °C; 9,100 and 10,000 °F).

  3. F-type main-sequence star - Wikipedia

    en.wikipedia.org/wiki/F-type_main-sequence_star

    This temperature range gives the F-type stars a whitish hue when observed by the atmosphere. Because a main-sequence star is referred to as a dwarf star, this class of star may also be termed a yellow-white dwarf (not to be confused with white dwarfs, remnant stars that are a possible final stage of stellar evolution).

  4. Habitability of F-type main-sequence star systems - Wikipedia

    en.wikipedia.org/wiki/Habitability_of_F-type...

    Artist's impression of tundra on an inhabited planet around a spectral class F5 star. The habitability of F-type main-sequence star (or yellow-white dwarf) systems is disputed due to the shorter lifetimes (3–8 Gyrs as opposed to 9–15 Gyrs for G stars) and higher levels of UV radiation.

  5. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    The Sun is a G-type main-sequence star (G2V), informally called a yellow dwarf, though its light is actually white. It formed approximately 4.6 billion [a] years ago from the gravitational collapse of matter within a region of a large molecular cloud.

  6. Dwarf star - Wikipedia

    en.wikipedia.org/wiki/Dwarf_star

    Dwarf star with no other qualification generally refers to a main-sequence star, a star of luminosity class V: main-sequence stars (dwarfs). Example: Achernar (B6Vep) [2] Red dwarfs are low-mass main-sequence stars. Yellow dwarfs are main-sequence (dwarf) stars with masses comparable to that of the Sun. Orange dwarfs are K-type main-sequence stars.

  7. Astronomers discover fastest spinning white dwarf star - AOL

    www.aol.com/astronomers-discover-fastest...

    The white dwarf star completes a full rotation once every 25 seconds.

  8. Main sequence - Wikipedia

    en.wikipedia.org/wiki/Main_sequence

    Main-sequence stars are called dwarf stars, [19] [20] but this terminology is partly historical and can be somewhat confusing. For the cooler stars, dwarfs such as red dwarfs, orange dwarfs, and yellow dwarfs are indeed much smaller and dimmer than other stars of those colors. However, for hotter blue and white stars, the difference in size and ...

  9. Habitability of yellow dwarf systems - Wikipedia

    en.wikipedia.org/wiki/Habitability_of_yellow...

    Yellow dwarf stars correspond to the G-class stars of the main sequence, with a mass between 0.9 and 1.1 M☉, [2] and surface temperatures between 5000 and 6000 K. [3] Since the Sun itself is a yellow dwarf, of type G2V, [11] these types of stars are also known as solar analogs.