16 relations: Apparent magnitude, B-type main-sequence star, Be star, Camelopardalis, Effective temperature, Light-year, Mount Wilson Observatory, Olin Chaddock Wilson, Photosphere, Solar luminosity, Solar radius, Star, Stellar classification, Stellar evolution, Stellar parallax, Subgiant.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
A B-type main-sequence star (B V) is a main-sequence (hydrogen-burning) star of spectral type B and luminosity class V. These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K. B-type stars are extremely luminous and blue.
Be Stars are a heterogeneous set of stars with B spectral types and emission lines.
Camelopardalis is a large but obscure constellation of the northern sky representing a giraffe.
The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States.
Olin Chaddock Wilson (January 13, 1909 – July 13, 1994) was an American astronomer best known for his work as a stellar spectroscopist.
The photosphere is a star's outer shell from which light is radiated.
The solar luminosity,, is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of the Sun.
Solar radius is a unit of distance used to express the size of stars in astronomy.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Stellar evolution is the process by which a star changes over the course of time.
Stellar parallax is the apparent shift of position of any nearby star (or other object) against the background of distant objects.
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.