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giant
subject			fact

giant	has luminosity class III
	has definition 1. A star that has evolved off the main sequence and is roughly a hundred times as luminous as the Sun. Giants can be of any color, but yellow, orange, and red giants are the most common. 2. A planet much more massive than Earth. The solar system has four giant planets, all far from the Sun: Jupiter, Saturn, Uranus, and Neptune.
	has definition High-luminosity star that lies above the main sequence on the Hertzsprung-Russell diagram.
	is a kind of star
star	has star surface temperature
	has spectral type
	has V magnitude
	has B magnitude
	has U magnitude
	has position on celestial sphere from the point of view of Earth
	has parallax from the point of view of Earth's orbit
	has proper motion
	has radiation at surface which is diffused out from the hotter core
	has energy source gravitational contraction and or fusion
	has energy production which takes place primarily within the core
	has surface density which depends on luminosity class
	has surface temperature greater than 1000 Kelvin
	has apparent magnitude
	has absolute magnitude
	has age
	has catalog star catalog
	has material hydrogen, helium
	has velocity determined from proper motion and radial velocity
	has mass greater than 0.08 the sun's mass
celestial body	has spectra
physical object	has location or center of gravity
	has angular momentum
	has momentum
	has temperature
	has volume
	has extent

Kinds of giant :

• Aldebaran (13 facts) (alpha Tau, HR 1457) - A K5 III subgiant (a foreground star in the Hyades). It has a faint M2 V companion. It is now known to be slowly and irregularly variable.
• Alpha Antliae (10 facts) (HR 4104)
• Alpha Apodis (10 facts) (HR 5470)
• Alpha Arietis (10 facts) (HR 617)
• Alpha Cassiopeiae (10 facts) (HR 168)
• Alpha Chamaeleontis (10 facts) (HR 3318)
• Alpha Doradus (10 facts) (HR 1465)
• Alpha Equulei (10 facts) (HR 8131)
• Alpha Horologii (10 facts) (HR 1326)
• Alpha Indi (10 facts) (HR 7869)
• Alpha Lupi (10 facts) (HR 5469)
• Alpha Monocerotis (10 facts) (HR 2970)
• Alpha Ophiuchi (10 facts) (HR 6556)
• Alpha Phoenicis (10 facts) (HR 99)
• Alpha Pyxidis (10 facts) (HR 3468)
• Alpha Scuti (10 facts) (HR 6973)
• Alpha Serpentis (10 facts) (HR 5854)
• Alpha Sextantis (10 facts) (HR 3981)
• Alpha Tucanae (10 facts) (HR 8502)
• Alpha Vulpeculae (10 facts) (HR 7405)
• Bellatrix (6 facts) (gamma Orionis) - A B2 III star.
• Beta Cancri (10 facts) (HR 3249)
• Beta Ceti (10 facts) (HR 188)
• Beta Crucis (10 facts) (HR 4853)
• Beta Herculis (10 facts) (HR 6148)
• Beta Volantis (10 facts) (HR 3347)
• blue giant (3 facts) - High-temperature star (as opposed to red stars). Blue giants are generally on or near the main sequence of the Hertzsprung-Russell diagram., A giant star with spectral type O or B. Croswell, K. 1995 The Alchemy of the Heavens, Anchor Books
• Capella (14 facts) (HR 1708, Alpha Aurigae) - The sixth brightest star in the night sky, consists of two yellow giants. A spectroscopic triple (F8-G0 III, G5 III, M5 V) (1974 parallax 0'.079). It has a high lithium content and a nearly circular orbit. It may be an X-ray source.
• CN-strong star (3 facts) - Late type giant with strong CN bands. Metallic lines are also stronger than in normal giants.
• Delta Crateris (10 facts) (HR 4382)
• Delta Scuti (10 facts) (HR 7020)
• Epsilon Sagittarii (10 facts) (HR 6879)
• Eta Piscium (10 facts) (HR 437)
• Gamma Corvi (10 facts) (HR 4662)
• Gamma Draconis (10 facts) (HR 6705)
• Gamma Microscopii (10 facts) (HR 8039)
• Gamma Normae (10 facts) (HR 6072)
• Gamma Sagittae (10 facts) (HR 7635)
• heavy-metal star (4 kinds, 18 facts) - A class of peculiar giant that includes the Ba II stars and the S stars.
• HR 4247 (9 facts)
• NML Cygnus (10 facts) (IRC+40448) - An infrared star. Its surface temperature is about the same as the surface temperature of Venus. It is a strong OH emitter, and CO has been identified in its spectrum.
• Nu Octantis (10 facts) (HR 8254)
• oxygen-rich giant (2 facts) - A collective designation for a giant showing metal oxide molecules - thus M, MS and S stars.
• Plaskett's star (6 facts) (HD 47129) - A very massive O-type giant with known anomalies in its spectrum. It is a spectroscopic binary in which mass exchange is occurring. Its spectrum can be interpreted to mean that each component has a mass of 75 M_sun.
• red giant (1 kind, 20 facts) - Large, highly luminous but relatively cool star that has reached a late stage in its "life". It is running out of nuclear "fuel" and has accordingly expanded greatly and become less dense. Many also become variable stars of long periodicity. Its next evolutionary stage is to become a white dwarf, in developing into which the star has to cross the main sequence on the Hertzsprung-Russell diagram., A giant star with spectral type M. Such stars are in a more advanced state of evolution than the Sun, for they do not burn hydrogen into helium at their cores. Instead, they may fuse hydrogen into helium in a layer surrounding their cores, or they may fuse helium into carbon and oxygen, or they may do both. Often, astronomers use "red giant" loosely, to include not only M giants but G and K giants, too., A late-type (K or M) high-luminosity (brighter than M_v = 0) star that occupies the upper right portion of the H-R diagram. Red giants are post-main-sequence stars that have exhausted the nuclear fuel in their cores. The red-giant phase corresponds to the establishment of a deep convective envelope. Red giants in a globular cluster are about 3 times more luminous than RR Lyrae stars in the same cluster.
• Spica (17 facts) (alpha Vir, HR 5056) - A double-lined spectroscopic binary (B1.5 V, late B). Component A (10.9 M_sun) is a beta Cephei star which seems to be near core hydrogen exhaustion.
• weak G-band star (3 facts) - G-type giant (G5 to K5) with a very weak or absent G band of CH and weak CN bands. These stars are C-deficient.
• white giant (3 facts) - A giant star of spectral type A. Some RR Lyrae stars are white giants.
• yellow giant (3 facts) - A giant star with a spectral type of G. The nearest and brightest yellow giants are the two composing the double star Capella.

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