181 relations: Accretion disk, Al-Biruni, Alfonsine tables, Alpha, Alpha Cygni variable, Ancient Greece, Ancient Rome, Apparent magnitude, Aratus, Asterism (astronomy), Astronomical spectroscopy, Babylon, Beta Canis Majoris, Beta Cephei variable, Beta Lyrae variable, Binary star, Blue supergiant star, Canis Major in Chinese astronomy, Canis Major Overdensity, Canis Minor, Carbon star, Caroline Herschel, Cephalus, Cerberus, Chinese astronomy, Columba (constellation), Constellation, Constellation family, Cosmic dust, Declination, Delta Canis Majoris, Delta Columbae, Delta Velorum, Diana (mythology), Dwarf galaxy, Earth, Edmund Chilmead, Egyptian calendar, Emission nebula, Enlil, Eos, Epsilon Canis Majoris, Equatorial coordinate system, Eta Canis Majoris, Eugène Joseph Delporte, Europa (mythology), European Southern Observatory, Extreme ultraviolet, EZ Canis Majoris, Francis Baily, ..., FS Canis Majoris, FU Orionis star, Full moon, Galactic halo, Gamma Canis Majoris, Globular cluster, Hare, HD 43197, HD 45364, HD 47186, HD 47186 b, HD 47186 c, HD 47536, Herbig Ae/Be star, Hesiod, Homer, Hot Neptune, Hypergiant, Inanna, Interacting galaxy, Interferometry, International Astronomical Union, Iota Canis Majoris, Irregular variable, Johann Bayer, Johann Elert Bode, John Bevis, John Flamsteed, Jupiter (mythology), Kappa Canis Majoris, Kelvin, Laelaps (mythology), Lambda Canis Majoris, Latin, Lepus (constellation), Light-year, List of brightest stars, List of largest stars, List of most luminous stars, List of nearest stars and brown dwarfs, Low-surface-brightness galaxy, Luminosity, Main sequence, Marduk, Māori people, Mesopotamia, Messier 41, Messier object, Metallicity, Milky Way, Monoceros, Monthly Notices of the Royal Astronomical Society, Mu Canis Majoris, MUL.APIN, Neutron star, NGC 2207 and IC 2163, NGC 2298, NGC 2354, NGC 2359, NGC 2360, NGC 2362, Nicolas-Louis de Lacaille, Ninurta, NR Canis Majoris, Nu Canis Majoris, Nu2 Canis Majoris, Nu3 Canis Majoris, Omicron, Omicron Canis Majoris, Omicron Puppis, Omicron1 Canis Majoris, Omicron2 Canis Majoris, Open cluster, Orbit, Orbital resonance, Orion (constellation), Pi Canis Majoris, Pi Puppis, Popular Astronomy (US magazine), Pre-main-sequence star, Procris, Ptolemy, Puppis, Quoll, R Canis Majoris, Right ascension, RR Lyrae variable, RX J0720.4-3125, Satellite galaxy, Saturn, Shell star, Shoalhaven River, Sigma Canis Majoris, Sirius, SN 1999ec, SN 2003H, Solar mass, Solar System, South Pole, Southern celestial hemisphere, Southern Hemisphere, Star formation, Stellar classification, Supergiant star, Supernova, Tau Canis Majoris, Taurus (constellation), The Astrophysical Journal, Theta Canis Majoris, Tiamat, Tuamotus, Tunisia, UW Canis Majoris, Variable star, Vermilion Bird, Very Large Telescope, VY Canis Majoris, W Canis Majoris, Wergaia, White dwarf, Wolf–Rayet star, WR 7, Xi1 Canis Majoris, Xi2 Canis Majoris, Z Canis Majoris, Zeta Canis Majoris, Zeus, 10 Canis Majoris, 12 Canis Majoris, 60th parallel north, 88 modern constellations. Expand index (131 more) » « Shrink index
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
Abū Rayḥān Muḥammad ibn Aḥmad Al-Bīrūnī (Chorasmian/ابوریحان بیرونی Abū Rayḥān Bērōnī; New Persian: Abū Rayḥān Bīrūnī) (973–1050), known as Al-Biruni (البيروني) in English, was an IranianD.J. Boilot, "Al-Biruni (Beruni), Abu'l Rayhan Muhammad b. Ahmad", in Encyclopaedia of Islam (Leiden), New Ed., vol.1:1236–1238.
The Alfonsine tables (Tablas alfonsíes, tabulae alphonsinae), sometimes spelled Alphonsine tables, provided data for computing the position of the Sun, Moon and planets relative to the fixed stars.
Alpha (uppercase, lowercase; ἄλφα, álpha, modern pronunciation álfa) is the first letter of the Greek alphabet.
Alpha Cygni variables are variable stars which exhibit non-radial pulsations, meaning that some portions of the stellar surface are contracting at the same time others parts expand.
Ancient Greece was a civilization belonging to a period of Greek history from the Greek Dark Ages of the 13th–9th centuries BC to the end of antiquity (AD 600).
In historiography, ancient Rome is Roman civilization from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD, encompassing the Roman Kingdom, Roman Republic and Roman Empire until the fall of the western empire.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
Aratus (Ἄρατος ὁ Σολεύς; ca. 315 BC/310 BC240) was a Greek didactic poet.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.
Babylon (KA2.DIĜIR.RAKI Bābili(m); Aramaic: בבל, Babel; بَابِل, Bābil; בָּבֶל, Bavel; ܒܒܠ, Bāwēl) was a key kingdom in ancient Mesopotamia from the 18th to 6th centuries BC.
Beta Canis Majoris (β Canis Majoris, abbreviated Beta CMa, β CMa), also named Mirzam, is a star in the southern constellation of Canis Major, the "Great Dog", located at a distance of about 500 light-years (150 parsecs) from the Sun.
Beta Cephei variables, also known as Beta Canis Majoris stars, are variable stars that exhibit small rapid variations in their brightness due to pulsations of the stars' surfaces, thought due to the unusual properties of iron at temperatures of 200,000 K in their interiors.
Beta Lyrae variables are a class of close binary stars.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
Blue supergiant stars are hot luminous stars, referred to scientifically as OB supergiants.
According to traditional Chinese uranography, the modern constellation Canis Major is located within the southern quadrant of the sky, which is symbolized as the Vermilion Bird of the South (南方朱雀, Nán Fāng Zhū Què).
The Canis Major Dwarf Galaxy (CMa Dwarf) or Canis Major Overdensity (CMa Overdensity) is a disputed dwarf irregular galaxy in the Local Group, located in the same part of the sky as the constellation Canis Major.
Canis Minor is a small constellation in the northern celestial hemisphere.
A carbon star is typically an asymptotic giant branch star, a luminous red giant, whose atmosphere contains more carbon than oxygen; the two elements combine in the upper layers of the star, forming carbon monoxide, which consumes all the oxygen in the atmosphere, leaving carbon atoms free to form other carbon compounds, giving the star a "sooty" atmosphere and a strikingly ruby red appearance.
Caroline Lucretia Herschel (16 March 1750 – 9 January 1848) was a German astronomer, whose most significant contributions to astronomy were the discoveries of several comets, including the periodic comet 35P/Herschel–Rigollet, which bears her name.
Cephalus (Κέφαλος, Kephalos) is a name, used both for the hero-figure in Greek mythology and carried as a theophoric name by historical persons.
In Greek mythology, Cerberus (Κέρβερος Kerberos), often called the "hound of Hades", is the monstrous multi-headed dog that guards the gates of the Underworld to prevent the dead from leaving.
Astronomy in China has a long history, beginning from the Shang Dynasty (Chinese Bronze Age).
Columba is a small, faint constellation created in the late sixteenth century.
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
Constellation families are collections of constellations sharing some defining characteristic, such as proximity on the celestial sphere, common historical origin, or common mythological theme.
Cosmic dust, also called extraterrestrial dust or space dust, is dust which exists in outer space, as well as all over planet Earth.
In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.
Delta Canis Majoris (δ Canis Majoris, abbreviated Delta CMa, δ CMa), also named Wezen, is a star in the constellation of Canis Major.
Delta Columbae is a binary star system in the constellation Columba.
Delta Velorum (δ Velorum, abbreviated Del Vel, δ Vel) is a triple star system in the southern constellation of Vela, near the border with Carina, and is part of the False Cross.
Diana (Classical Latin) was the goddess of the hunt, the moon, and nature in Roman mythology, associated with wild animals and woodland, and having the power to talk to and control animals.
A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, a small number compared to the Milky Way's 200–400 billion stars.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
Edmund Chilmead (1610 – 19 February 1654) was an English writer and translator, who produced both scholarly works and hack-writing.
The ancient Egyptian calendar was a solar calendar with a 365-day year.
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths.
Enlil, later known as Elil, was the ancient Mesopotamian god of wind, air, earth, and storms.
In Greek mythology, Eos (Ionic and Homeric Greek Ἠώς Ēōs, Attic Ἕως Éōs, "dawn", or; Aeolic Αὔως Aúōs, Doric Ἀώς Āṓs) is a Titaness and the goddess of the dawn, who rose each morning from her home at the edge of the Oceanus.
Epsilon Canis Majoris (ε Canis Majoris, abbreviated Epsilon CMa, ε CMa), also named Adhara, is a binary star and, despite being designated 'epsilon', the second-brightest star in the constellation of Canis Major and one of the brightest stars in the night sky.
The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
Eta Canis Majoris (η Canis Majoris, abbreviated Eta CMa, η CMa), also named Aludra, is a star in the constellation of Canis Major.
Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe.
In Greek mythology, Europa (Εὐρώπη, Eurṓpē) was the mother of King Minos of Crete, a woman with Phoenician origin of high lineage, and after whom the continent Europe was named.
The European Southern Observatory (ESO) is a 15-nation intergovernmental research organization for ground-based astronomy.
Extreme ultraviolet radiation (EUV or XUV) or high-energy ultraviolet radiation is electromagnetic radiation in the part of the electromagnetic spectrum spanning wavelengths from 124 nm down to 10 nm, and therefore (by the Planck–Einstein equation) having photons with energies from 10 eV up to 124 eV (corresponding to 124 nm to 10 nm respectively).
EZ Canis Majoris (also designated as EZ CMa or WR 6) is a Wolf-Rayet star in the constellation of Canis Major.
Francis Baily (28 April 177430 August 1844) was an English astronomer.
FS Canis Majoris (FS CMa), also known as HD 45677 or MWC 142, is a B-type star in the constellation of Canis Major.
In stellar evolution, an FU Orionis star (also FU Orionis object, or FUor) is a pre–main-sequence star which displays an extreme change in magnitude and spectral type.
The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective.
A galactic halo is an extended, roughly spherical component of a galaxy which extends beyond the main, visible component.
Gamma Canis Majoris (γ Canis Majoris, abbreviated Gamma CMa, γ CMa), also named Muliphein, is a star in the constellation of Canis Major.
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
Hares and jackrabbits are leporids belonging to the genus Lepus.
HD 43197 is a 9th magnitude G-type main sequence or subgiant star located approximately 180 light years away in the constellation Canis Major.
HD 45364 is a star approximately 107 light years away from Earth in the constellation of Canis Major.
HD 47186 is a star located approximately 129 light-years away in the constellation of Canis Major.
HD 47186 b is a “hot Neptune” extrasolar planet located approximately 123 light years away in the constellation of Canis Major, orbiting the star HD 47186.
HD 47186 c is an extrasolar planet located approximately 123 light years away in the constellation of Canis Major, orbiting the star HD 47186.
HD 47536, also known as HR 2447, is a 5th magnitude K-type giant star located approximately 400 light-years away in the constellation of Canis Major.
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.
Hesiod (or; Ἡσίοδος Hēsíodos) was a Greek poet generally thought by scholars to have been active between 750 and 650 BC, around the same time as Homer.
Homer (Ὅμηρος, Hómēros) is the name ascribed by the ancient Greeks to the legendary author of the Iliad and the Odyssey, two epic poems that are the central works of ancient Greek literature.
A hot Neptune or Hoptune is a type of giant planet with a mass similar to that of Uranus or Neptune orbiting close to its star, normally within less than 1 AU.
A hypergiant (luminosity class 0 or Ia+) is among the very rare kinds of stars that typically show tremendous luminosities and very high rates of mass loss by stellar winds.
Inanna was the ancient Sumerian goddess of love, beauty, sex, desire, fertility, war, combat, justice, and political power.
Interacting galaxies (colliding galaxies) are galaxies whose gravitational fields result in a disturbance of one another.
Interferometry is a family of techniques in which waves, usually electromagnetic waves, are superimposed causing the phenomenon of interference in order to extract information.
The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.
Iota Canis Majoris (ι Canis Majoris, ι CMa) is a variable supergiant star in the constellation Canis Major.
An irregular variable is a type of variable star in which variations in brightness show no regular periodicity.
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
Johann Elert Bode (19 January 1747 – 23 November 1826) was a German astronomer known for his reformulation and popularisation of the Titius–Bode law.
John Bevis (10 November 1695 in Salisbury, Wiltshire – 6 November 1771) was an English doctor, electrical researcher and astronomer.
John Flamsteed FRS (19 August 1646 – 31 December 1719) was an English astronomer and the first Astronomer Royal.
Jupiter (from Iūpiter or Iuppiter, *djous “day, sky” + *patēr “father," thus "heavenly father"), also known as Jove gen.
Kappa Canis Majoris, Latinized from κ Canis Majoris, is a solitary, blue-white hued star in the constellation Canis Major.
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
Laelaps (Λαῖλαψ, gen.: Λαίλαπος) (Lelaps, Lalaps, Lailaps) was a Greek mythological dog who never failed to catch what she was hunting.
Lambda Canis Majoris (λ Canis Majoris) is a solitary, blue-white hued star in the constellation Canis Major.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
Lepus is a constellation lying just south of the celestial equator.
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.
This is a list of the brightest naked eye stars to +2.50 magnitude, as determined by their maximum, total, or combined apparent visual magnitudes as seen from Earth.
Below is an ordered list of the largest stars currently known by radius.
Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude).
The following two lists include all the known stars and brown dwarfs that are within of the Sun, or were/will be within in the astronomically near past or future.
A low-surface-brightness galaxy, or LSB galaxy, is a diffuse galaxy with a surface brightness that, when viewed from Earth, is at least one magnitude lower than the ambient night sky.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
Marduk (cuneiform: dAMAR.UTU; Sumerian: amar utu.k "calf of the sun; solar calf"; Greek Μαρδοχαῖος, Mardochaios) was a late-generation god from ancient Mesopotamia and patron deity of the city of Babylon.
The Māori are the indigenous Polynesian people of New Zealand.
Mesopotamia is a historical region in West Asia situated within the Tigris–Euphrates river system, in modern days roughly corresponding to most of Iraq, Kuwait, parts of Northern Saudi Arabia, the eastern parts of Syria, Southeastern Turkey, and regions along the Turkish–Syrian and Iran–Iraq borders.
Messier 41 (also known as M41 or NGC 2287) is an open cluster in the Canis Major constellation.
The Messier objects are a set of 110 astronomical objects, of which 103 were included in lists published by French astronomer Charles Messier in 1771 and 1781.
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
The Milky Way is the galaxy that contains our Solar System.
Monoceros (Greek: Μονόκερως) is a faint constellation on the celestial equator.
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
Mu Canis Majoris (μ Canis Majoris) is a binary star system in the southern constellation of Canis Major.
MUL.APIN is the conventional title given to a Babylonian compendium that deals with many diverse aspects of Babylonian astronomy and astrology.
A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.
NGC 2207 and IC 2163 are a pair of colliding spiral galaxies about 80 million light-years away in the constellation Canis Major.
NGC 2298 is a globular cluster in the southern constellation of Puppis.
NGC 2354 is an open cluster in the constellation Canis Major.
NGC 2359 (also known as Thor's Helmet) is an emission nebula in the constellation Canis Major.
NGC 2360, also known as Caroline's Cluster, is an open cluster in the constellation Canis Major.
NGC 2362 is an open cluster in the constellation Canis Major.
Abbé Nicolas-Louis de Lacaille, formerly sometimes spelled de la Caille, (15 March 1713 – 21 March 1762) was a French astronomer.
Ninurta, also known as Ningirsu, was a Mesopotamian god of farming, healing, hunting, law, scribes, and war who was first worshipped in early Sumer.
NR Canis Majoris also known as HR 2853, HD 58954, and HIP 36186, is a Delta Scuti variable star with a spectral classification of F2V, which varies by a few hundredths of a magnitude over roughly 16 hours.
The Bayer designation Nu Canis Majoris (ν CMa / ν Canis Majoris) is shared by three star systems, in the constellation Canis Major.
Nu2 Canis Majoris (ν2 Canis Majoris) is a single star in the southern constellation of Canis Major.
Nu3 Canis Majoris, Latinized from ν3 Canis Majoris, is a binary star system in the southern constellation of Canis Major.
Omicron (uppercase Ο, lowercase ο, literally "small o": όμικρον back rounded vowel. Letters that arose from omicron include Roman O and Cyrillic O. The upper-case letter of omicron (O) was originally used in mathematics as a symbol for Big O notation (representing a function's asymptotic growth rate), but has fallen out of favor because omicron is indistinguishable from the Latin letter O and easily confused with the digit zero (0). Omicron is used to designate the fifteenth star in a constellation group, its ordinal placement a function of both magnitude and position. Such stars include Omicron Andromedae, Omicron Ceti, and Omicron Persei.
The Bayer designation Omicron Canis Majoris (ο CMa / ο Canis Majoris) is shared by two stars, in the constellation Canis Major.
Omicron Puppis (ο Puppis) is candidate binary star system in the southern constellation of Puppis.
Omicron1 Canis Majoris (ο1 CMa, ο1 Canis Majoris) is a red supergiant star in the constellation Canis Major.
Omicron2 Canis Majoris (ο² CMa, ο² Canis Majoris) is a star in the constellation Canis Major.
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
In celestial mechanics, an orbital resonance occurs when orbiting bodies exert a regular, periodic gravitational influence on each other, usually because their orbital periods are related by a ratio of small integers.
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
Pi Canis Majoris (π Canis Majoris) is a binary star system in the southern constellation of Canis Major.
Pi Puppis, Latinized from π Puppis, also named Ahadi, is the second-brightest star in the southern constellation of Puppis.
Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.
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.
In Greek mythology, Procris (Πρόκρις, gen.: Πρόκριδος) was the daughter of Erechtheus, king of Athens and his wife, Praxithea.
Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.
Puppis is a constellation in the southern sky.
Quolls (genus Dasyurus) are carnivorous marsupials native to mainland Australia, New Guinea, and Tasmania.
R Canis Majoris is an eclipsing interacting binary star system in the constellation Canis Major.
Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.
RR Lyrae variables are periodic variable stars, commonly found in globular clusters.
RX J0720.4-3125 is a neutron star in the constellation Canis Major.
A satellite galaxy is a smaller companion galaxy that travels on bound orbits within the gravitational potential of a more massive and luminous host galaxy (also known as the primary galaxy).
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
A shell star is a star having a spectrum that exhibits features indicating a circumstellar disc of gas surrounding the star at the equator.
The Shoalhaven River is a perennial river that rises from the Southern Tablelands and flows into an open mature wave dominated barrier estuary near Nowra on the South Coast of New South Wales, Australia.
Sigma Canis Majoris (σ Canis Majoris, abbreviated Sig CMa, σ CMa), also named Unurgunite, is a variable star in the southern constellation of Canis Major.
Sirius (a romanization of Greek Σείριος, Seirios,."glowing" or "scorching") is a star system and the brightest star in the Earth's night sky.
SN 1999EC is a type Ib supernova that was discovered in the interacting galaxy NGC 2207 in October 1999. It was found on images taken with the Katzman Automatic Imaging Telescope at the Lick Observatory. The progenitor is estimated to have had 38 times the mass of the Sun and was 5.34 million years old at the time of the outburst.
SN 2003H was a supernova that appeared halfway between the colliding NGC 2207 and IC 2163 galaxies.
The solar mass is a standard unit of mass in astronomy, equal to approximately.
The Solar SystemCapitalization of the name varies.
The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface.
The Southern Celestial Hemisphere, or the Southern Sky, is the southern half of the celestial sphere, which appears to rotate around a polar axis due to Earth's rotation.
The Southern Hemisphere is the half of Earth that is south of the Equator.
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.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Supergiants are among the most massive and most luminous stars.
A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.
Tau Canis Majoris (τ CMa, τ Canis Majoris, 30 CMa) is a multiple star system in the constellation Canis Major.
Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
Theta Canis Majoris (θ Canis Majoris) is a solitary, orange-hued star near the northern edge of the constellation Canis Major, forming the nose of the "dog".
In the religion of ancient Babylon, Tiamat (𒀭𒋾𒊩𒆳 or, Greek: Θαλάττη Thaláttē) is a primordial goddess of the salt sea, mating with Abzû, the god of fresh water, to produce younger gods.
The Tuamotus, also referred to in English as the Tuamotu Archipelago or the Tuamotu Islands (Îles Tuamotu, officially Archipel des Tuamotu), are a French Polynesian chain of almost 80 islands and atolls forming the largest chain of atolls in the world.
Tunisia (تونس; Berber: Tunes, ⵜⵓⵏⴻⵙ; Tunisie), officially the Republic of Tunisia, (الجمهورية التونسية) is a sovereign state in Northwest Africa, covering. Its northernmost point, Cape Angela, is the northernmost point on the African continent. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia's population was estimated to be just under 11.93 million in 2016. Tunisia's name is derived from its capital city, Tunis, which is located on its northeast coast. Geographically, Tunisia contains the eastern end of the Atlas Mountains, and the northern reaches of the Sahara desert. Much of the rest of the country's land is fertile soil. Its of coastline include the African conjunction of the western and eastern parts of the Mediterranean Basin and, by means of the Sicilian Strait and Sardinian Channel, feature the African mainland's second and third nearest points to Europe after Gibraltar. Tunisia is a unitary semi-presidential representative democratic republic. It is considered to be the only full democracy in the Arab World. It has a high human development index. It has an association agreement with the European Union; is a member of La Francophonie, the Union for the Mediterranean, the Arab Maghreb Union, the Arab League, the OIC, the Greater Arab Free Trade Area, the Community of Sahel-Saharan States, the African Union, the Non-Aligned Movement, the Group of 77; and has obtained the status of major non-NATO ally of the United States. In addition, Tunisia is also a member state of the United Nations and a state party to the Rome Statute of the International Criminal Court. Close relations with Europe in particular with France and with Italy have been forged through economic cooperation, privatisation and industrial modernization. In ancient times, Tunisia was primarily inhabited by Berbers. Phoenician immigration began in the 12th century BC; these immigrants founded Carthage. A major mercantile power and a military rival of the Roman Republic, Carthage was defeated by the Romans in 146 BC. The Romans, who would occupy Tunisia for most of the next eight hundred years, introduced Christianity and left architectural legacies like the El Djem amphitheater. After several attempts starting in 647, the Muslims conquered the whole of Tunisia by 697, followed by the Ottoman Empire between 1534 and 1574. The Ottomans held sway for over three hundred years. The French colonization of Tunisia occurred in 1881. Tunisia gained independence with Habib Bourguiba and declared the Tunisian Republic in 1957. In 2011, the Tunisian Revolution resulted in the overthrow of President Zine El Abidine Ben Ali, followed by parliamentary elections. The country voted for parliament again on 26 October 2014, and for President on 23 November 2014.
UW Canis Majoris is a star in the constellation Canis Major.
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
The Vermilion bird is one of the Four Symbols of the Chinese constellations.
The Very Large Telescope (VLT) is a telescope facility operated by the European Southern Observatory on Cerro Paranal in the Atacama Desert of northern Chile.
VY Canis Majoris (VY CMa) is an extreme pulsating red hypergiant (or supergiant) star located in the constellation Canis Major.
W Canis Majoris is a carbon star in the constellation Canis Major.
Wergaia or Werrigia is an indigenous Australian language group in the Wimmera region of north-Western Victoria.
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon.
WR 7 (HD 56925) is a Wolf–Rayet star in the constellation of Canis Major.
Xi1 Canis Majoris, Latinized from ξ1 Canis Majoris, is a star in the constellation Canis Major.
Xi2 Canis Majoris (ξ2 Canis Majoris) is an astrometric binary star system in the southern constellation of Canis Major.
Z Canis Majoris (Z CMa) is a B-type star in the constellation of Canis Major.
Zeta Canis Majoris (ζ Canis Majoris, abbreviated Zeta CMa, ζ CMa), also named Furud, is a spectroscopic binary in the constellation of Canis Major.
Zeus (Ζεύς, Zeús) is the sky and thunder god in ancient Greek religion, who rules as king of the gods of Mount Olympus.
10 Canis Majoris is a star in the constellation Canis Major.
12 Canis Majoris is a star in the constellation Canis Major.
The 60th parallel north is a circle of latitude that is 60 degrees north of Earth's equator.
In modern astronomy, the sky (celestial sphere) is divided into 88 regions called constellations, generally based on the asterisms (which are also called "constellations") of Greek and Roman mythology.