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SU Ursae Majoris, the Glossary

Index SU Ursae Majoris

SU Ursae Majoris, or SU UMa, is a close binary star in the northern circumpolar constellation of Ursa Major.[1]

Table of Contents

  1. 22 relations: Accretion disk, American Association of Variable Star Observers, Binary star, Cataclysmic variable star, Circumpolar star, Dwarf nova, Lidiya Tseraskaya, Light curve, Light-year, New Astronomy (journal), Northern celestial hemisphere, Orbital period, Radial velocity, Stellar parallax, Sternberg Astronomical Institute, Superhump, The Astrophysical Journal, U Geminorum, Ursa Major, Variable star, White dwarf, X-ray astronomy.

  2. Dwarf novae

Accretion disk

An accretion disk is a structure (often a circumstellar disk) formed by diffuse material in orbital motion around a massive central body.

See SU Ursae Majoris and Accretion disk

American Association of Variable Star Observers

The American Association of Variable Star Observers (AAVSO) is an international nonprofit organization.

See SU Ursae Majoris and American Association of Variable Star Observers

Binary star

A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other.

See SU Ursae Majoris and Binary star

Cataclysmic variable star

In astronomy, cataclysmic variable stars (CVs) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent state.

See SU Ursae Majoris and Cataclysmic variable star

Circumpolar star

A circumpolar star is a star that, as viewed from a given latitude on Earth, never sets below the horizon due to its apparent proximity to one of the celestial poles.

See SU Ursae Majoris and Circumpolar star

Dwarf nova

A dwarf nova (pl. novae), or U Geminorum variable, is one of several types of cataclysmic variable star, consisting of a close binary star system in which one of the components is a white dwarf that accretes matter from its companion. SU Ursae Majoris and dwarf nova are dwarf novae.

See SU Ursae Majoris and Dwarf nova

Lidiya Tseraskaya

Lidiya Petrovna Tseraskaya née Shelekhova (Russian: Лидия Петровна Цераская) (22 June 1855 – 24 December 1931) was a Russian astronomer.

See SU Ursae Majoris and Lidiya Tseraskaya

Light curve

In astronomy, a light curve is a graph of the light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y-axis and with time on the x-axis.

See SU Ursae Majoris and Light curve

Light-year

A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km (Scientific notation: 9.4607304725808 × 1012 km), which is approximately 5.88 trillion mi.

See SU Ursae Majoris and Light-year

New Astronomy (journal)

New Astronomy is a peer-reviewed scientific journal covering topics in astronomy and astrophysics.

See SU Ursae Majoris and New Astronomy (journal)

Northern celestial hemisphere

The northern celestial hemisphere, also called the Northern Sky, is the northern half of the celestial sphere; that is, it lies north of the celestial equator.

See SU Ursae Majoris and Northern celestial hemisphere

Orbital period

The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object.

See SU Ursae Majoris and Orbital period

Radial velocity

The radial velocity or line-of-sight velocity of a target with respect to an observer is the rate of change of the vector displacement between the two points.

See SU Ursae Majoris and Radial velocity

Stellar parallax

Stellar parallax is the apparent shift of position (parallax) of any nearby star (or other object) against the background of distant stars.

See SU Ursae Majoris and Stellar parallax

Sternberg Astronomical Institute

The Sternberg Astronomical Institute (Государственный астрономический институт имени Штернберга in Russian), also known as GAISh (ГАИШ), is a research institution in Moscow, Russia, a division of Moscow State University.

See SU Ursae Majoris and Sternberg Astronomical Institute

Superhump

In astronomy, a superhump is a periodic brightness variation in a cataclysmic variable star system, with a period within a few percent of the orbital period of the system. SU Ursae Majoris and superhump are dwarf novae.

See SU Ursae Majoris and Superhump

The Astrophysical Journal

The Astrophysical Journal (ApJ) is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.

See SU Ursae Majoris and The Astrophysical Journal

U Geminorum

U Geminorum (U Gem), in the constellation Gemini, is an archetypal example of a dwarf nova. SU Ursae Majoris and u Geminorum are dwarf novae and objects with variable star designations.

See SU Ursae Majoris and U Geminorum

Ursa Major

Ursa Major (also known as the Great Bear) is a constellation in the northern sky, whose associated mythology likely dates back into prehistory.

See SU Ursae Majoris and Ursa Major

Variable star

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes with time.

See SU Ursae Majoris and Variable star

White dwarf

A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. SU Ursae Majoris and white dwarf are white dwarfs.

See SU Ursae Majoris and White dwarf

X-ray astronomy

X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects.

See SU Ursae Majoris and X-ray astronomy

See also

Dwarf novae

References

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

Also known as SU UMa.