Stars And Stellar Phenomena
32 entries in the Stars And Stellar Phenomena compendium.
AcruxBrightest star in Crux and southernmost first-magnitude star.AlgolA bright multiple star and prototype eclipsing variable.AsteroseismologyStudy of stellar oscillations revealing internal star structure.B(e) starB-type stars with forbidden emission lines and infrared excess.Be starB-type stars with hydrogen emission lines from circumstellar disks.Beta CentauriTriple star system and pointer to the Southern Cross.Beta PictorisYoung star with the first imaged debris disk and three planets.Black dwarfTheoretical cooled white dwarf not yet existing in the universe.Blue giantHot, evolved stars in a specific region of the HR diagram.Blue stragglerStars that defy standard stellar evolution in clusters.Blue supergiantHot, luminous stars often evolving from high-mass main-sequence stars.Carbon starCarbon-rich red giants with sooty atmospheres and distinctive spectra.Castor (star)A sextuple star system and the second-brightest in Gemini.Cassiopeia ABrightest extrasolar radio source and supernova remnant in Cassiopeia.Classical Cepheid variableClassical Cepheids are standard candles for measuring cosmic distances.Crab PulsarFirst pulsar linked to a supernova remnant, discovered in 1968.CW LeonisA nearby carbon star shrouded in a thick, dusty envelope.Double starPairs of stars that appear close together from Earth.Effective temperatureBlack-body temperature matching a star or planet's radiated energy.Epsilon Canis MajorisBinary star system and brightest extreme ultraviolet source in the night sky.Flare starVariable stars with unpredictable, dramatic brightness increases.Gamma CassiopeiaeFirst star observed with emission lines; prototype of Gamma Cassiopeiae variables.Hayashi trackHayashi track describes early evolution of low-mass stars.Helium flashBrief runaway helium fusion in degenerate cores of low-mass stars.Herbig Ae/Be starYoung intermediate-mass stars still embedded in gas and dust.Herbig–Haro objectBright patches of nebulosity from newborn stars' jets.Horizontal branchStellar stage after red-giant branch, fusing helium in core.HypergiantRare, extremely luminous stars near the Eddington limit.Instability stripRegion of the HR diagram where pulsating variable stars are found.LBV 1806−20A candidate luminous blue variable and likely binary star.Light curveGraph of celestial light intensity over time.Luminous blue variableRare, massive stars with dramatic, unpredictable brightness variations.
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