Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
 

Be star

Index Be star

Be Stars are a heterogeneous set of stars with B spectral types and emission lines. [1]

15 relations: Achernar, Angelo Secchi, B(e) star, Balmer series, Binary system, Gamma Cassiopeiae, General Catalogue of Variable Stars, Giant star, Herbig Ae/Be star, Lambda Eridani variable, Main sequence, Shell star, Stellar classification, Subgiant, Supergiant star.

Achernar

Achernar is the name of the primary (or 'A') component of the binary system designated Alpha Eridani (α Eridani, abbreviated Alf Eri, α Eri), which is the brightest 'star' or point of light in, and lying at the southern tip of, the constellation of Eridanus, and the tenth-brightest in the night sky.

New!!: Be star and Achernar · See more »

Angelo Secchi

Fr.

New!!: Be star and Angelo Secchi · See more »

B(e) star

A B star, frequently called a B-type star, is a B-type star with distinctive forbidden neutral or low ionisation emission lines in its spectrum.

New!!: Be star and B(e) star · See more »

Balmer series

The Balmer series or Balmer lines in atomic physics, is the designation of one of a set of six named series describing the spectral line emissions of the hydrogen atom.

New!!: Be star and Balmer series · See more »

Binary system

A binary system is a system of two astronomical bodies which are close enough that their gravitational attraction causes them to orbit each other around a barycenter (also see animated examples).

New!!: Be star and Binary system · See more »

Gamma Cassiopeiae

Gamma Cassiopeiae, Latinized from γ Cassiopeiae, is a star at the center of the distinctive "W" asterism in the northern circumpolar constellation of Cassiopeia.

New!!: Be star and Gamma Cassiopeiae · See more »

General Catalogue of Variable Stars

The General Catalogue of Variable Stars (GCVS) is a list of variable stars.

New!!: Be star and General Catalogue of Variable Stars · See more »

Giant star

A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.

New!!: Be star and Giant star · See more »

Herbig Ae/Be star

A Herbig Ae/Be star (HAeBe) is a pre-main-sequence star – a young (V. Mannings & A. Sargent (2000) High-resolution studies of gas and dust around young intermediate-mass stars: II. observations of an additional sample of Herbig Ae/Be systems. Astrophysical Journal, vol. 529, p. 391 Hydrogen and calcium emission lines are observed in their spectra. They are 2-8 Solar mass objects, still existing in the star formation (gravitational contraction) stage and approaching the main sequence (i.e. they are not burning hydrogen in their center). In the Hertzsprung–Russell diagram these stars are located to the right of the main sequence. They are named after the American astronomer George Herbig, who first distinguished them from other stars in 1960. The original Herbig criteria were.

New!!: Be star and Herbig Ae/Be star · See more »

Lambda Eridani variable

A Lambda Eridani Variable is a class of Be stars that show small amplitude variations of a few hundredths of a magnitude.

New!!: Be star and Lambda Eridani variable · See more »

Main sequence

In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.

New!!: Be star and Main sequence · See more »

Shell star

A shell star is a star having a spectrum that exhibits features indicating a circumstellar disc of gas surrounding the star at the equator.

New!!: Be star and Shell star · See more »

Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

New!!: Be star and Stellar classification · See more »

Subgiant

A subgiant is a star that is brighter than a normal main-sequence star of the same spectral class, but not as bright as true giant stars.

New!!: Be star and Subgiant · See more »

Supergiant star

Supergiants are among the most massive and most luminous stars.

New!!: Be star and Supergiant star · See more »

Redirects here:

Be stars.

References

[1] https://en.wikipedia.org/wiki/Be_star

OutgoingIncoming
Hey! We are on Facebook now! »