Faster access than browser!
128 relations: Abd al-Rahman al-Sufi, Adriaan van Maanen, Alpha Persei Cluster, Annual Review of Astronomy and Astrophysics, Arabic numerals, Astrometry, Astronomical spectroscopy, Astronomical unit, Bayer designation, Beehive Cluster, Beryllium, Big Dipper, Binoculars, Blue straggler, Brown dwarf, Cepheid variable, Charles Messier, Chemical element, Circumstellar disc, Classical Cepheid variable, Comet, Convection, Cosmic distance ladder, Doppler effect, Double Cluster, Earth, Eduard Schönfeld, Edward Emerson Barnard, Ejnar Hertzsprung, Electromagnetic spectrum, Elliptical galaxy, Escape velocity, Extinction (astronomy), Galactic Center, Galactic plane, Galileo Galilei, Giovanni Battista Hodierna, Globular cluster, Gravity, H II region, Half-life, Helium, Hertzsprung–Russell diagram, Hipparcos, Hodge 301, Hyades (star cluster), Hydrogen, Hydrogen line, IC 2391, Infrared dark cloud, ..., Irregular galaxy, Johann Bayer, John Louis Emil Dreyer, John Michell, Kelvin, Kepler-66, Kepler-67, Large Magellanic Cloud, Light-year, List of open clusters, Lithium, Local Group, Main sequence, Messier 41, Messier 47, Messier 7, Metallicity, Metre per second, Milky Way, Molecular cloud, Monthly Notices of the Royal Astronomical Society, Moving-cluster method, Nebula, New General Catalogue, NGC 2244, NGC 2362, NGC 2451, NGC 6811, Nuclear fusion, OB star, Open cluster family, Open cluster remnant, Optical telescope, Parallax, Parsec, Perseus (constellation), Planetary nebula, Pleiades, Projection effect, Proper motion, Ptolemy, R136, Radial velocity, Radiant energy, Radiation pressure, Red giant, Robert Julius Trumpler, Roman numerals, Rosette Nebula, RR Lyrae variable, Scale height, Sidereus Nuncius, Small Magellanic Cloud, Solar mass, Spiral galaxy, Star, Star cluster, Star formation, Stellar association, Stellar evolution, Stellar kinematics, Stellar wind, Supernova, Tarantula Nebula, Taurus (constellation), Telescope, Tidal force, Trigonometry, Ultraviolet, Ursa Major, Ursa Major Moving Group, Vanishing point, Variable star, Velocity, Westerlund 1, White dwarf, Wild Duck Cluster, William Herschel. Expand index (78 more) »
Abd al-Rahman al-Sufi
'Abd al-Rahman al-Sufi (عبدالرحمن صوفی (December 7, 903 in Rey, Iran – May 25, 986 in Shiraz, Iran) was a Persian astronomer also known as 'Abd ar-Rahman as-Sufi, 'Abd al-Rahman Abu al-Husayn, 'Abdul Rahman Sufi, or 'Abdurrahman Sufi and, historically, in the West as Azophi and Azophi Arabus. The lunar crater Azophi and the minor planet 12621 Alsufi are named after him. Al-Sufi published his famous Book of Fixed Stars in 964, describing much of his work, both in textual descriptions and pictures. Al-Biruni reports that his work on the ecliptic was carried out in Shiraz. He lived at the Buyid court in Isfahan.
New!!: Open cluster and Abd al-Rahman al-Sufi · See more »
Adriaan van Maanen
Adriaan van Maanen (March 31, 1884, Sneek – January 26, 1946, Pasadena) was a Dutch–American astronomer.
New!!: Open cluster and Adriaan van Maanen · See more »
Alpha Persei Cluster
The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster in the constellation of Perseus.
New!!: Open cluster and Alpha Persei Cluster · See more »
Annual Review of Astronomy and Astrophysics
The Annual Review of Astronomy and Astrophysics is an annual peer reviewed scientific journal published by Annual Reviews.
New!!: Open cluster and Annual Review of Astronomy and Astrophysics · See more »
Arabic numerals
Arabic numerals, also called Hindu–Arabic numerals, are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, based on the Hindu–Arabic numeral system, the most common system for the symbolic representation of numbers in the world today.
New!!: Open cluster and Arabic numerals · See more »
Astrometry
Astrometry is the branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.
New!!: Open cluster and Astrometry · See more »
Astronomical spectroscopy
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.
New!!: Open cluster and Astronomical spectroscopy · See more »
Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
New!!: Open cluster and Astronomical unit · See more »
Bayer designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
New!!: Open cluster and Bayer designation · See more »
Beehive Cluster
The Beehive Cluster (also known as Praesepe (Latin for "manger"), M44, NGC 2632, or Cr 189), is an open cluster in the constellation Cancer.
New!!: Open cluster and Beehive Cluster · See more »
Beryllium
Beryllium is a chemical element with symbol Be and atomic number 4.
New!!: Open cluster and Beryllium · See more »
Big Dipper
The Big Dipper (US) or the Plough (UK) is an asterism consisting of seven bright stars of the constellation Ursa Major; six of them are of second magnitude and one, Megrez (δ), of third magnitude.
New!!: Open cluster and Big Dipper · See more »
Binoculars
Binoculars or field glasses are two telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.
New!!: Open cluster and Binoculars · See more »
Blue straggler
A blue straggler is a main-sequence star in an open or globular cluster that is more luminous and bluer than stars at the main-sequence turn-off point for the cluster.
New!!: Open cluster and Blue straggler · See more »
Brown dwarf
Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, having masses between approximately 13 to 75–80 times that of Jupiter, or approximately to about.
New!!: Open cluster and Brown dwarf · See more »
Cepheid variable
A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.
New!!: Open cluster and Cepheid variable · See more »
Charles Messier
Charles Messier (26 June 1730 – 12 April 1817) was a French astronomer most notable for publishing an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 "Messier objects".
New!!: Open cluster and Charles Messier · See more »
Chemical element
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).
New!!: Open cluster and Chemical element · See more »
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.
New!!: Open cluster and Circumstellar disc · See more »
Classical Cepheid variable
Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star.
New!!: Open cluster and Classical Cepheid variable · See more »
Comet
A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
New!!: Open cluster and Comet · See more »
Convection
Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).
New!!: Open cluster and Convection · See more »
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects.
New!!: Open cluster and Cosmic distance ladder · See more »
Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.
New!!: Open cluster and Doppler effect · See more »
Double Cluster
The Double Cluster (also known as Caldwell 14) is the common name for the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus.
New!!: Open cluster and Double Cluster · See more »
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
New!!: Open cluster and Earth · See more »
Eduard Schönfeld
Eduard Schönfeld (December 22, 1828 – May 1, 1891) was a German astronomer.
New!!: Open cluster and Eduard Schönfeld · See more »
Edward Emerson Barnard
Edward Emerson Barnard (December 16, 1857 – February 6, 1923) was an American astronomer.
New!!: Open cluster and Edward Emerson Barnard · See more »
Ejnar Hertzsprung
Ejnar Hertzsprung (8 October 1873 – 21 October 1967) was a Danish chemist and astronomer born in Copenhagen.
New!!: Open cluster and Ejnar Hertzsprung · See more »
Electromagnetic spectrum
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
New!!: Open cluster and Electromagnetic spectrum · See more »
Elliptical galaxy
An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.
New!!: Open cluster and Elliptical galaxy · See more »
Escape velocity
In physics, escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a massive body.
New!!: Open cluster and Escape velocity · See more »
Extinction (astronomy)
In astronomy, extinction is the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observer.
New!!: Open cluster and Extinction (astronomy) · See more »
Galactic Center
The Galactic Center is the rotational center of the Milky Way.
New!!: Open cluster and Galactic Center · See more »
Galactic plane
The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies.
New!!: Open cluster and Galactic plane · See more »
Galileo Galilei
Galileo Galilei (15 February 1564Drake (1978, p. 1). The date of Galileo's birth is given according to the Julian calendar, which was then in force throughout Christendom. In 1582 it was replaced in Italy and several other Catholic countries with the Gregorian calendar. Unless otherwise indicated, dates in this article are given according to the Gregorian calendar. – 8 January 1642) was an Italian polymath.
New!!: Open cluster and Galileo Galilei · See more »
Giovanni Battista Hodierna
Giovanni Battista Hodierna, also spelled as Odierna (April 13, 1597 – April 6, 1660) was an Italian astronomer at the court of Giulio Tomasi, Duke of Palma (Palma di Montechiaro).
New!!: Open cluster and Giovanni Battista Hodierna · See more »
Globular cluster
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
New!!: Open cluster and Globular cluster · See more »
Gravity
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.
New!!: Open cluster and Gravity · See more »
H II region
An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.
New!!: Open cluster and H II region · See more »
Half-life
Half-life (symbol t1⁄2) is the time required for a quantity to reduce to half its initial value.
New!!: Open cluster and Half-life · See more »
Helium
Helium (from lit) is a chemical element with symbol He and atomic number 2.
New!!: Open cluster and Helium · See more »
Hertzsprung–Russell diagram
The Hertzsprung–Russell diagram, abbreviated H–R diagram, HR diagram or HRD, is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.
New!!: Open cluster and Hertzsprung–Russell diagram · See more »
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
New!!: Open cluster and Hipparcos · See more »
Hodge 301
Hodge 301 is a star cluster in the Tarantula Nebula, visible from Earth's Southern Hemisphere.
New!!: Open cluster and Hodge 301 · See more »
Hyades (star cluster)
The Hyades (Greek Ὑάδες, also known as Melotte 25 or Collinder 50) is the nearest open cluster and one of the best-studied star clusters.
New!!: Open cluster and Hyades (star cluster) · See more »
Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
New!!: Open cluster and Hydrogen · See more »
Hydrogen line
The hydrogen line, 21-centimeter line or H I line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms.
New!!: Open cluster and Hydrogen line · See more »
IC 2391
IC 2391 (also known as the Omicron Velorum Cluster) is an open cluster in the constellation Vela.
New!!: Open cluster and IC 2391 · See more »
Infrared dark cloud
An infrared dark cloud (IRDC) is a cold, dense region of a giant molecular cloud.
New!!: Open cluster and Infrared dark cloud · See more »
Irregular galaxy
An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy.
New!!: Open cluster and Irregular galaxy · See more »
Johann Bayer
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
New!!: Open cluster and Johann Bayer · See more »
John Louis Emil Dreyer
John Louis Emil Dreyer (February 13, 1852 – September 14, 1926) was a Danish-Irish astronomer.
New!!: Open cluster and John Louis Emil Dreyer · See more »
John Michell
John Michell (25 December 1724 – 29 April 1793) was an English natural philosopher and clergyman who provided pioneering insights in a wide range of scientific fields, including astronomy, geology, optics, and gravitation.
New!!: Open cluster and John Michell · See more »
Kelvin
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.
New!!: Open cluster and Kelvin · See more »
Kepler-66
Kepler-66 is a star with slightly more mass than the Sun in the NGC 6811 open cluster in the Cygnus constellation.
New!!: Open cluster and Kepler-66 · See more »
Kepler-67
Kepler-67 is a star with slightly less mass than the Sun in the NGC 6811 open cluster in the Cygnus constellation and has one confirmed planet, slightly smaller than Neptune, announced in 2013.
New!!: Open cluster and Kepler-67 · See more »
Large Magellanic Cloud
The Large Magellanic Cloud (LMC) is a satellite galaxy of the Milky Way.
New!!: Open cluster and Large Magellanic Cloud · See more »
Light-year
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.
New!!: Open cluster and Light-year · See more »
List of open clusters
This is a list of open clusters located in the Milky Way.
New!!: Open cluster and List of open clusters · See more »
Lithium
Lithium (from lit) is a chemical element with symbol Li and atomic number 3.
New!!: Open cluster and Lithium · See more »
Local Group
The Local Group is the galaxy group that includes the Milky Way.
New!!: Open cluster and Local Group · See more »
Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
New!!: Open cluster and Main sequence · See more »
Messier 41
Messier 41 (also known as M41 or NGC 2287) is an open cluster in the Canis Major constellation.
New!!: Open cluster and Messier 41 · See more »
Messier 47
Messier 47 (M47 or NGC 2422) is an open cluster in the constellation Puppis.
New!!: Open cluster and Messier 47 · See more »
Messier 7
Messier 7 or M7, also designated NGC 6475 and sometimes known as the Ptolemy Cluster, is an open cluster of stars in the constellation of Scorpius.
New!!: Open cluster and Messier 7 · See more »
Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
New!!: Open cluster and Metallicity · See more »
Metre per second
Metre per second (American English: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.
New!!: Open cluster and Metre per second · See more »
Milky Way
The Milky Way is the galaxy that contains our Solar System.
New!!: Open cluster and Milky Way · See more »
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).
New!!: Open cluster and Molecular cloud · See more »
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
New!!: Open cluster and Monthly Notices of the Royal Astronomical Society · See more »
Moving-cluster method
In astrometry, the moving-cluster method and the closely related convergent point method are means, primarily of historical interest, for determining the distance to star clusters.
New!!: Open cluster and Moving-cluster method · See more »
Nebula
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
New!!: Open cluster and Nebula · See more »
New General Catalogue
The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888.
New!!: Open cluster and New General Catalogue · See more »
NGC 2244
NGC 2244 (also known as Caldwell 50) is an open cluster in the Rosette Nebula, which is located in the constellation Monoceros.
New!!: Open cluster and NGC 2244 · See more »
NGC 2362
NGC 2362 is an open cluster in the constellation Canis Major.
New!!: Open cluster and NGC 2362 · See more »
NGC 2451
NGC 2451 is an open cluster in the Puppis constellation, probably discovered by Giovanni Battista Hodierna before 1654 and John Herschel in 1835.
New!!: Open cluster and NGC 2451 · See more »
NGC 6811
NGC 6811 is an open cluster in the constellation of Cygnus, near the constellation of Lyra.
New!!: Open cluster and NGC 6811 · See more »
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).
New!!: Open cluster and Nuclear fusion · See more »
OB star
OB stars are hot, massive stars of spectral types O or early-type B that form in loosely organized groups called OB associations.
New!!: Open cluster and OB star · See more »
Open cluster family
In astronomy, an open cluster family is a group of approximately coeval (age range \sim30 Myr) young open star clusters located in a relatively small region of the Galactic disk (radius \sim250 pc).
New!!: Open cluster and Open cluster family · See more »
Open cluster remnant
In astronomy, an open cluster remnant (OCR) is the final stage in the evolution of an open star cluster.
New!!: Open cluster and Open cluster remnant · See more »
Optical telescope
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
New!!: Open cluster and Optical telescope · See more »
Parallax
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
New!!: Open cluster and Parallax · See more »
Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
New!!: Open cluster and Parsec · See more »
Perseus (constellation)
Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.
New!!: Open cluster and Perseus (constellation) · See more »
Planetary nebula
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
New!!: Open cluster and Planetary nebula · See more »
Pleiades
The Pleiades (also known as the Seven Sisters and Messier 45), are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus.
New!!: Open cluster and Pleiades · See more »
Projection effect
Projection effect may refer to.
New!!: Open cluster and Projection effect · See more »
Proper motion
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
New!!: Open cluster and Proper motion · See more »
Ptolemy
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.
New!!: Open cluster and Ptolemy · See more »
R136
R136 (formally known as RMC 136 from the Radcliffe Observatory Magellanic Clouds catalogue) is the central concentration of stars in the NGC 2070 star cluster, which lies at the centre of the Tarantula Nebula in the Large Magellanic Cloud.
New!!: Open cluster and R136 · See more »
Radial velocity
The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point.
New!!: Open cluster and Radial velocity · See more »
Radiant energy
In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.
New!!: Open cluster and Radiant energy · See more »
Radiation pressure
Radiation pressure is the pressure exerted upon any surface due to the exchange of momentum between the object and the electromagnetic field.
New!!: Open cluster and Radiation pressure · See more »
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
New!!: Open cluster and Red giant · See more »
Robert Julius Trumpler
Robert Julius Trumpler (until 1915 Robert Trümpler, born October 2, 1886 in Zürich, Switzerland; died September 10, 1956 in Berkeley, United States) was a Swiss-American astronomer.
New!!: Open cluster and Robert Julius Trumpler · See more »
Roman numerals
The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.
New!!: Open cluster and Roman numerals · See more »
Rosette Nebula
The Rosette Nebula (also known as Caldwell 49) is a large spherical H II region (circular in appearance) located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy.
New!!: Open cluster and Rosette Nebula · See more »
RR Lyrae variable
RR Lyrae variables are periodic variable stars, commonly found in globular clusters.
New!!: Open cluster and RR Lyrae variable · See more »
Scale height
In various scientific contexts, a scale height is a distance over which a quantity decreases by a factor of e (approximately 2.72, the base of natural logarithms).
New!!: Open cluster and Scale height · See more »
Sidereus Nuncius
Sidereus Nuncius (usually Sidereal Messenger, also Starry Messenger or Sidereal Message) is a short astronomical treatise (or pamphlet) published in New Latin by Galileo Galilei on March 13, 1610.
New!!: Open cluster and Sidereus Nuncius · See more »
Small Magellanic Cloud
The Small Magellanic Cloud (SMC), or Nubecula Minor, is a dwarf galaxy near the Milky Way.
New!!: Open cluster and Small Magellanic Cloud · See more »
Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
New!!: Open cluster and Solar mass · See more »
Spiral galaxy
Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae(pp. 124–151) and, as such, form part of the Hubble sequence.
New!!: Open cluster and Spiral galaxy · See more »
Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
New!!: Open cluster and Star · See more »
Star cluster
Star clusters are groups of stars.
New!!: Open cluster and Star cluster · See more »
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.
New!!: Open cluster and Star formation · See more »
Stellar association
A stellar association is a very loose star cluster, looser than both open clusters and globular clusters.
New!!: Open cluster and Stellar association · See more »
Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
New!!: Open cluster and Stellar evolution · See more »
Stellar kinematics
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.
New!!: Open cluster and Stellar kinematics · See more »
Stellar wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
New!!: Open cluster and Stellar wind · See more »
Supernova
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.
New!!: Open cluster and Supernova · See more »
Tarantula Nebula
The Tarantula Nebula (also known as 30 Doradus) is an H II region in the Large Magellanic Cloud (LMC).
New!!: Open cluster and Tarantula Nebula · See more »
Taurus (constellation)
Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.
New!!: Open cluster and Taurus (constellation) · See more »
Telescope
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
New!!: Open cluster and Telescope · See more »
Tidal force
The tidal force is an apparent force that stretches a body towards the center of mass of another body due to a gradient (difference in strength) in gravitational field from the other body; it is responsible for the diverse phenomena, including tides, tidal locking, breaking apart of celestial bodies and formation of ring systems within Roche limit, and in extreme cases, spaghettification of objects.
New!!: Open cluster and Tidal force · See more »
Trigonometry
Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships involving lengths and angles of triangles.
New!!: Open cluster and Trigonometry · See more »
Ultraviolet
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
New!!: Open cluster and Ultraviolet · See more »
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.
New!!: Open cluster and Ursa Major · See more »
Ursa Major Moving Group
The Ursa Major Moving Group, also known as Collinder 285 and the Ursa Major association, is a nearby stellar moving group – a set of stars with common velocities in space and thought to have a common origin in space and time.
New!!: Open cluster and Ursa Major Moving Group · See more »
Vanishing point
A vanishing point is a point on the image plane of a perspective drawing where the two-dimensional perspective projections (or drawings) of mutually parallel lines in three-dimensional space appear to converge.
New!!: Open cluster and Vanishing point · See more »
Variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
New!!: Open cluster and Variable star · See more »
Velocity
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time.
New!!: Open cluster and Velocity · See more »
Westerlund 1
Westerlund 1 (abbreviated Wd1, sometimes called Ara Cluster) is a compact young super star cluster in the Milky Way galaxy, about 3.5–5 kpc away from Earth.
New!!: Open cluster and Westerlund 1 · See more »
White dwarf
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
New!!: Open cluster and White dwarf · See more »
Wild Duck Cluster
The Wild Duck Cluster (also known as Messier 11, or NGC 6705) is an open cluster in the constellation Scutum.
New!!: Open cluster and Wild Duck Cluster · See more »
William Herschel
Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.
New!!: Open cluster and William Herschel · See more »
Redirects here:
Birth cluster, Cluster formation, Galactic Cluster, Galactic cluster, Open Cluster, Open Clusters, Open clusters, Open star cluster, Trumpler class, Trumpler classification.
References
[1] https://en.wikipedia.org/wiki/Open_cluster
