Be stars

Achernar is the brightest star in the constellation of Eridanus and the ninth-brightest in the night sky. It has the Bayer designation Alpha Eridani, which is Latinized from α Eridani and abbreviated Alpha Eri or α Eri. The name Achernar applies to the primary component of a binary system. The two components are designated Alpha Eridani A (the primary) and B (the secondary), with the latter known informally as Achernar B. As determined by the Hipparcos astrometry satellite, this system is located at a distance of approximately from the Sun.

Albireo is a double star designated Beta Cygni (β Cygni, abbreviated Beta Cyg, β Cyg). The International Astronomical Union uses the name "Albireo" specifically for the brightest star in the system. Although designated 'beta', it is fainter than Gamma Cygni, Delta Cygni, and Epsilon Cygni and is the fifth-brightest point of light in the constellation of Cygnus. Appearing to the naked eye to be a single star of magnitude 3, viewing through even a low-magnification telescope resolves it into its two components. The brighter yellow star, itself a very close trinary system, makes a striking colour

star in the constellation Cassiopeia

star in the constellation Cepheus

star in the constellation of Taurus

star in the constellation Ara

binary star in the Pleiades star cluster

star in the constellation Columba

multiple star system in the constellation of Lyra

binary star system in the southern constellation Telescopium

star in the constellation Scorpius

star in the constellation Centaurus

star in the constellation Cassiopeia

star in the constellation Centaurus

in astronomy, a B-type star with emission lines

star in the constellation Monoceros

star in the constellation Pisces

star in the constellation Carina

variable star in the constellation Canis Major

star in the constellation Aquila

variable star in Orion

variable star in the constellation Apus

star in the constellation Orion

star in the constellation Aquarius

star in the constellation Draco

star in the constellation Ara

binary star system in the constellation Perseus

star in the constellation Centaurus

star in the constellation Piscis Austrinus

Star in the constellation Crux

variable star in the constellation Canis Major

variable star in the constellation Carina

variable star in the constellation Eridanus

star in the constellation Aries

star in the constellation Crux

star in the constellation Perseus

star in the constellation Corvus

star in the constellation Canis Major

variable star in the constellation Ophiuchus

variable star in the constellation Camelopardalis

binary star system in the constellation Piscis Austrinus

Star system in the constellation Vela

star in the constellation Andromeda

star in the constellation Crux

binary star system in the constellation Lupus

star in the constellation Aquila

variable star in the constellation Corona Borealis

star in the constellation Perseus

star in the constellation Chamaeleon

variable star

star in the constellation Cygnus

star in the constellation Tucana

binary star system in the constellation Vulpecula

star system in the constellation Cygnus

star in the constellation Orion

star in the constellation Carina

star in the constellation Centaurus

star in the constellation Camelopardalis

LB-1 is a binary star system in the constellation Gemini. In 2019, a paper in Nature proposed that the system contained an unusually massive stellar black hole outside of ordinary single stellar evolution parameters. However, analyses in 2020 found the original 2019 conclusion to be incorrect. Some researchers now believe the system consists of a stripped B-type star and a massive rapidly rotating Be star.

star in the constellation Hydra