Faster access than browser!
20 relations: Asymptotic giant branch, Be star, Forbidden mechanism, FS Canis Majoris, FS Canis Majoris variable, Herbig Ae/Be star, Infrared, Infrared excess, Linear polarization, Magellanic Clouds, Molecular cloud, Planetary nebula, Pre-main-sequence star, Roche lobe, Shell star, Spectral line, Stellar classification, Stellar wind, Supergiant star, Symbiotic binary.
Asymptotic giant branch
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
New!!: B(e) star and Asymptotic giant branch · See more »
Be star
Be Stars are a heterogeneous set of stars with B spectral types and emission lines.
New!!: B(e) star and Be star · See more »
Forbidden mechanism
In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of light by atomic nuclei, atoms, or molecules which undergo a transition that is not allowed by a particular selection rule but is allowed if the approximation associated with that rule is not made.
New!!: B(e) star and Forbidden mechanism · See more »
FS Canis Majoris
FS Canis Majoris (FS CMa), also known as HD 45677 or MWC 142, is a B-type star in the constellation of Canis Major.
New!!: B(e) star and FS Canis Majoris · See more »
FS Canis Majoris variable
An FS Canis Majoris variable is a type of eruptive variable star.
New!!: B(e) star and FS Canis Majoris variable · 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!!: B(e) star and Herbig Ae/Be star · See more »
Infrared
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
New!!: B(e) star and Infrared · See more »
Infrared excess
An infrared excess is a measurement of an astronomical source, typically a star, that in their spectral energy distribution has a greater measured infrared flux than expected by assuming the star is a blackbody radiator.
New!!: B(e) star and Infrared excess · See more »
Linear polarization
In electrodynamics, linear polarization or plane polarization of electromagnetic radiation is a confinement of the electric field vector or magnetic field vector to a given plane along the direction of propagation.
New!!: B(e) star and Linear polarization · See more »
Magellanic Clouds
The Magellanic Clouds (or Nubeculae Magellani) are two irregular dwarf galaxies visible in the Southern Celestial Hemisphere; they are members of the Local Group and are orbiting the Milky Way galaxy.
New!!: B(e) star and Magellanic Clouds · See more »
Molecular cloud
A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit the formation of molecules, most commonly molecular hydrogen (H2).
New!!: B(e) star and Molecular cloud · See more »
Planetary nebula
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
New!!: B(e) star and Planetary nebula · See more »
Pre-main-sequence star
A pre-main-sequence star (also known as a PMS star and PMS object) is a star in the stage when it has not yet reached the main sequence.
New!!: B(e) star and Pre-main-sequence star · See more »
Roche lobe
The Roche lobe (or Roche limit) is the region around a star in a binary system within which orbiting material is gravitationally bound to that star.
New!!: B(e) star and Roche lobe · 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!!: B(e) star and Shell star · See more »
Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
New!!: B(e) star and Spectral line · See more »
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: B(e) star and Stellar classification · See more »
Stellar wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
New!!: B(e) star and Stellar wind · See more »
Supergiant star
Supergiants are among the most massive and most luminous stars.
New!!: B(e) star and Supergiant star · See more »
Symbiotic binary
A symbiotic binary is a type of binary star system, often simply called a symbiotic star.
New!!: B(e) star and Symbiotic binary · See more »
