Similarities between Open cluster and Star
Open cluster and Star have 57 things in common (in Unionpedia): Abd al-Rahman al-Sufi, Astronomical spectroscopy, Astronomical unit, Bayer designation, Beryllium, Blue straggler, Brown dwarf, Cepheid variable, Chemical element, Convection, Doppler effect, Earth, Electromagnetic spectrum, Extinction (astronomy), Galactic Center, Globular cluster, Gravity, H II region, Helium, Hertzsprung–Russell diagram, Hydrogen, Hydrogen line, Johann Bayer, Kelvin, Large Magellanic Cloud, Light-year, Lithium, Local Group, Main sequence, Metallicity, ..., Milky Way, Molecular cloud, Monthly Notices of the Royal Astronomical Society, Nebula, Nuclear fusion, Parallax, Planetary nebula, Proper motion, Ptolemy, R136, Radial velocity, Radiant energy, Radiation pressure, Red giant, Solar mass, Spiral galaxy, Star cluster, Star formation, Stellar association, Stellar evolution, Stellar kinematics, Stellar wind, Supernova, Telescope, Ultraviolet, White dwarf, William Herschel. Expand index (27 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.
Abd al-Rahman al-Sufi and Open cluster · Abd al-Rahman al-Sufi and Star ·
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.
Astronomical spectroscopy and Open cluster · Astronomical spectroscopy and Star ·
Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
Astronomical unit and Open cluster · Astronomical unit and Star ·
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.
Bayer designation and Open cluster · Bayer designation and Star ·
Beryllium
Beryllium is a chemical element with symbol Be and atomic number 4.
Beryllium and Open cluster · Beryllium and Star ·
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.
Blue straggler and Open cluster · Blue straggler and Star ·
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.
Brown dwarf and Open cluster · Brown dwarf and Star ·
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.
Cepheid variable and Open cluster · Cepheid variable and Star ·
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).
Chemical element and Open cluster · Chemical element and Star ·
Convection
Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).
Convection and Open cluster · Convection and Star ·
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.
Doppler effect and Open cluster · Doppler effect and Star ·
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
Earth and Open cluster · Earth and Star ·
Electromagnetic spectrum
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
Electromagnetic spectrum and Open cluster · Electromagnetic spectrum and Star ·
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.
Extinction (astronomy) and Open cluster · Extinction (astronomy) and Star ·
Galactic Center
The Galactic Center is the rotational center of the Milky Way.
Galactic Center and Open cluster · Galactic Center and Star ·
Globular cluster
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
Globular cluster and Open cluster · Globular cluster and Star ·
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.
Gravity and Open cluster · Gravity and Star ·
H II region
An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.
H II region and Open cluster · H II region and Star ·
Helium
Helium (from lit) is a chemical element with symbol He and atomic number 2.
Helium and Open cluster · Helium and Star ·
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.
Hertzsprung–Russell diagram and Open cluster · Hertzsprung–Russell diagram and Star ·
Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
Hydrogen and Open cluster · Hydrogen and Star ·
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.
Hydrogen line and Open cluster · Hydrogen line and Star ·
Johann Bayer
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
Johann Bayer and Open cluster · Johann Bayer and Star ·
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.
Kelvin and Open cluster · Kelvin and Star ·
Large Magellanic Cloud
The Large Magellanic Cloud (LMC) is a satellite galaxy of the Milky Way.
Large Magellanic Cloud and Open cluster · Large Magellanic Cloud and Star ·
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.
Light-year and Open cluster · Light-year and Star ·
Lithium
Lithium (from lit) is a chemical element with symbol Li and atomic number 3.
Lithium and Open cluster · Lithium and Star ·
Local Group
The Local Group is the galaxy group that includes the Milky Way.
Local Group and Open cluster · Local Group and Star ·
Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
Main sequence and Open cluster · Main sequence and Star ·
Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
Metallicity and Open cluster · Metallicity and Star ·
Milky Way
The Milky Way is the galaxy that contains our Solar System.
Milky Way and Open cluster · Milky Way and Star ·
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).
Molecular cloud and Open cluster · Molecular cloud and Star ·
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.
Monthly Notices of the Royal Astronomical Society and Open cluster · Monthly Notices of the Royal Astronomical Society and Star ·
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.
Nebula and Open cluster · Nebula and Star ·
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).
Nuclear fusion and Open cluster · Nuclear fusion and Star ·
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.
Open cluster and Parallax · Parallax and Star ·
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.
Open cluster and Planetary nebula · Planetary nebula and Star ·
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.
Open cluster and Proper motion · Proper motion and Star ·
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.
Open cluster and Ptolemy · Ptolemy and Star ·
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.
Open cluster and R136 · R136 and Star ·
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.
Open cluster and Radial velocity · Radial velocity and Star ·
Radiant energy
In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.
Open cluster and Radiant energy · Radiant energy and Star ·
Radiation pressure
Radiation pressure is the pressure exerted upon any surface due to the exchange of momentum between the object and the electromagnetic field.
Open cluster and Radiation pressure · Radiation pressure and Star ·
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.
Open cluster and Red giant · Red giant and Star ·
Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
Open cluster and Solar mass · Solar mass and Star ·
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.
Open cluster and Spiral galaxy · Spiral galaxy and Star ·
Star cluster
Star clusters are groups of stars.
Open cluster and Star cluster · Star and Star cluster ·
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.
Open cluster and Star formation · Star and Star formation ·
Stellar association
A stellar association is a very loose star cluster, looser than both open clusters and globular clusters.
Open cluster and Stellar association · Star and Stellar association ·
Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
Open cluster and Stellar evolution · Star and Stellar evolution ·
Stellar kinematics
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.
Open cluster and Stellar kinematics · Star and Stellar kinematics ·
Stellar wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
Open cluster and Stellar wind · Star and Stellar wind ·
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.
Open cluster and Supernova · Star and Supernova ·
Telescope
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
Open cluster and Telescope · Star and Telescope ·
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.
Open cluster and Ultraviolet · Star and Ultraviolet ·
White dwarf
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
Open cluster and White dwarf · Star and White dwarf ·
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.
Open cluster and William Herschel · Star and William Herschel ·
The list above answers the following questions
- What Open cluster and Star have in common
- What are the similarities between Open cluster and Star
Open cluster and Star Comparison
Open cluster has 128 relations, while Star has 399. As they have in common 57, the Jaccard index is 10.82% = 57 / (128 + 399).
References
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