Alpha Arae (Tchou or Choo) is the second brightest star in the constellation Ara
It is a variable Be star [See related link] and has a spectral class of B3V
Alpha Velorum is a type of star known as a binary star system, consisting of two massive stars located in the constellation Vela. The primary star is a blue-white giant star, while the secondary star is a less massive star. This binary system is also known as the star Delta Velorum.
Alpha Centauri is a binary star system, commonly known as Alpha Centauri ABAlpha Centauri A is about the same size and age as our Sun with a spectral type of G2VAlpha Centauri B is about 14% smaller that our Sun and a lot cooler having a spectral type of K1VThere is a third star, not surprisingly called Alpha Centauri C or Proxima Centauri which is the closest star to Earth.See related link for more information.
The brightest star is The Persian (alpha alpha), with magnitude 3.11
Polaris (the North star - Alpha Ursae Minoris) is a triple star system, but appears to us as a single star. Alpha Centauri is also another triple star system. And there are many more.
Alpha Centauri (Rigil Kentaurus, Rigil Kent, or Toliman) is a binary star systemAlpha Centauri A is a G2 star or yellow dwarf - very similar to our own SunAlpha Centauri B is a K1 star or orange dwarf.and possibly a triple star system.Alpha Centauri C (Proxima Centauri) is a M5 star or red dwarfAlpha Centauri (Rigil Kentaurus) is the brightest star in the southern constellation of Centaurus. Although it appears to us as a single object, Alpha Centauri is actually a binary star system.Alpha Centauri A has a spectral type of G2V - so it is a yellow dwarf.Alpha Centauri B has a spectral type of G2V - so it is an orange dwarf.
red star
There is no "star alpha". Alpha is PART of the name of many stars - basically one for each constellation.
There is no star that is simply called "Alpha". There are several that have "alpha" in their name, for example Alpha Centauri, Alpha Cruxis, Alpha Canis Majoris, etc. - usually the brightest star in each constellation. Some stars such as Betelgeuse (Alpha Orionis) are not actually the brightest star in the constellation.
Aldebaran, Taurus's alpha star, is a red giant.
Alpha Cassiopeiae (Schedar) is the second brightest star in the constellation Cassiopeia.It is an orange giant star with a spectral type of K0.See related link for more information.
Alpha Velorum is a type of star known as a binary star system, consisting of two massive stars located in the constellation Vela. The primary star is a blue-white giant star, while the secondary star is a less massive star. This binary system is also known as the star Delta Velorum.
Alpha Pavonis (Alpha Pav) is a class "B" blue-white binary star.
Sadalmelik (Alpha Aquarii) is a G2 spectral type star; a yellowish white giant star.
It is a [[wiki/G-type star|G-type]] [[wiki/Supergiant|supergiant]] ([[wiki/Yellow supergiant|yellow supergiant]]) [[wiki/Star|star]] in the [[wiki/Constellation|constellation]] aquarius.
Alpha Cancri is a binary star system consisting of two stars: one is a yellow giant star and the other is a white dwarf. The primary star is a K-type giant star, also known as a "Carbon star," while the second star is a compact, hot white dwarf.
Menkar (Alpha Ceti) is the alpha star in Cetus.
Alpha Arietis (Hamal) is the brightest star in the constellation Aries. It has a spectral type of K2.It is an Orange giant, slightly cooler than our own Sun but much larger.See related link for more information.