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T Tauri star

Index T Tauri star

T Tauri stars (TTS) are a class of variable stars associated with youth. [1]

49 relations: Alfred Harrison Joy, Alfvén wave, Angular momentum, Binary star, Bipolar outflow, Chromosphere, Circumstellar disc, F-type main-sequence star, Gliese 674 b, Hayashi track, HD 106906 b, Herbig Ae/Be star, K-type main-sequence star, Lithium, Lithium burning, Magnetic field, Main sequence, Molecular cloud, Nuclear fusion, Orion Nebula, Orion variable, P Cygni, Planet, Planetary system, Planetesimal, Pre-main-sequence star, Proton–proton chain reaction, Protoplanet, Protoplanetary disk, Radiation zone, Radio, Red dwarf, Solar mass, Solar System, Solar wind, Star, Star formation, Starspot, Stellar classification, Stellar evolution, Stellar wind, Sun, T Tauri, Taurus Molecular Cloud, V830 Tauri b, Variable star, X-ray, Young stellar object, 1RXS J160929.1−210524.

Alfred Harrison Joy

Alfred Harrison Joy (September 23, 1882, Greenville, Illinois – April 18, 1973, Pasadena, California) was an astronomer best known for his work on stellar distances, the radial motion of stars, and variable stars.

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Alfvén wave

In plasma physics, an Alfvén wave, named after Hannes Alfvén, is a type of magnetohydrodynamic wave in which ions oscillate in response to a restoring force provided by an effective tension on the magnetic field lines.

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Angular momentum

In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.

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Binary star

A binary star is a star system consisting of two stars orbiting around their common barycenter.

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Bipolar outflow

A bipolar outflow comprises two continuous flows of gas from the poles of a star.

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Chromosphere

The chromosphere (literally, "sphere of color") is the second of the three main layers in the Sun's atmosphere and is roughly 3,000 to 5,000 kilometers deep.

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Circumstellar disc

A circumstellar disc (or circumstellar disk) is a torus, pancake or ring-shaped accumulation of matter composed of gas, dust, planetesimals, asteroids or collision fragments in orbit around a star.

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F-type main-sequence star

An F-type main-sequence star (F V) is a main-sequence, hydrogen-fusing star of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass of the Sun and surface temperatures between 6,000 and 7,600 K.Tables VII and VIII.

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Gliese 674 b

Gliese 674 b is an extrasolar planet approximately 15 light years away in the constellation of Ara.

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Hayashi track

The Hayashi track is a luminosity–temperature relationship obeyed by infant stars of less than in the pre-main-sequence phase (PMS phase) of stellar evolution.

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HD 106906 b

HD 106906 b is a directly imaged planetary-mass companion and candidate exoplanet orbiting the star, in the constellation Crux at about 300 light-years from Earth.

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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.

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K-type main-sequence star

A K-type main-sequence star (K V), also referred to as an orange dwarf or K dwarf, is a main-sequence (hydrogen-burning) star of spectral type K and luminosity class V. These stars are intermediate in size between red M-type main-sequence stars ("red dwarfs") and yellow G-type main-sequence stars.

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Lithium

Lithium (from lit) is a chemical element with symbol Li and atomic number 3.

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Lithium burning

Lithium burning is a nucleosynthetic process in which lithium is depleted in a star.

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Magnetic field

A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.

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Main sequence

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

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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).

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Nuclear fusion

In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

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Orion Nebula

The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion.

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Orion variable

An Orion variable is a variable star which exhibits irregular and eruptive variations in its luminosity and is typically associated with diffuse nebulae.

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P Cygni

P Cygni (34 Cyg) is a variable star in the constellation Cygnus.

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Planet

A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.

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Planetary system

A planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system.

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Planetesimal

Planetesimals are solid objects thought to exist in protoplanetary disks and in debris disks.

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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.

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Proton–proton chain reaction

The proton–proton chain reaction is one of the two (known) sets of fusion reactions by which stars convert hydrogen to helium.

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Protoplanet

A protoplanet is a large planetary embryo that originated within a protoplanetary disc and has undergone internal melting to produce a differentiated interior.

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Protoplanetary disk

A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star.

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Radiation zone

A radiation zone, radiative zone or radiative region is a layer of a star's interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction, rather than by convection.

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Radio

Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.

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Red dwarf

A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.

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Solar mass

The solar mass is a standard unit of mass in astronomy, equal to approximately.

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Solar System

The Solar SystemCapitalization of the name varies.

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Solar wind

The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona.

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Star

A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

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Star formation

Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars.

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Starspot

Starspots are stellar phenomena.

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Stellar classification

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

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Stellar evolution

Stellar evolution is the process by which a star changes over the course of time.

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Stellar wind

A stellar wind is a flow of gas ejected from the upper atmosphere of a star.

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Sun

The Sun is the star at the center of the Solar System.

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T Tauri

T Tauri is a variable star in the constellation Taurus, the prototype of the T Tauri stars.

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Taurus Molecular Cloud

The Taurus Molecular Cloud is a molecular cloud in the constellations Taurus and Auriga.

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V830 Tauri b

V830 Tauri b is an exoplanet orbiting around the young T Tauri star V830 Tauri, about away from Earth in the constellation of Taurus.

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Variable star

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

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X-ray

X-rays make up X-radiation, a form of electromagnetic radiation.

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Young stellar object

Young stellar object (YSO) denotes a star in its early stage of evolution.

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1RXS J160929.1−210524

1RXS J160929.1-210524 (also known as GSC 6213-1358 or PZ99 J160930.3-210459) is a pre-main-sequence star nearly 470 light-years away in the constellation of Scorpius.

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Redirects here:

Classical T Tauri Star, EXor, EXor variable star, T Tau star, T Tauri Star, T Tauri stars, T Tauri type stars, T Tauri variable, T tauri star, T-Tauri stage, T-Tauri star, T. Tauri Star, Weak-line T Tauri star.

References

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

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