34 relations: Allan Sandage, Annual Review of Astronomy and Astrophysics, Astronomy, Barred spiral galaxy, C. Marcella Carollo, David Merritt, Disc galaxy, Elliptical galaxy, Galactic coordinate system, Galactic corona, Galactic halo, Galaxy cluster, Galaxy formation and evolution, Galaxy merger, Globular cluster, Hubble Space Telescope, John Kormendy, Laura Ferrarese, Mass deficit, M–sigma relation, Monthly Notices of the Royal Astronomical Society, NGC 4314, Sersic profile, Shock wave, Spiral galaxy, Star, Star formation, Stellar evolution, Stellar population, Supermassive black hole, The Astronomical Journal, The Astrophysical Journal, Tidal force, Virgo Cluster.
Allan Sandage
Allan Rex Sandage (June 18, 1926 – November 13, 2010) was an American astronomer.
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Annual Review of Astronomy and Astrophysics
The Annual Review of Astronomy and Astrophysics is an annual peer reviewed scientific journal published by Annual Reviews.
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Astronomy
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
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Barred spiral galaxy
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.
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C. Marcella Carollo
C.
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David Merritt
David Merritt is an American astrophysicist and professor at the Rochester Institute of Technology in Rochester, New York.
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Disc galaxy
A disc galaxy is a galaxy characterized by a disc, a flattened circular volume of stars.
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Elliptical galaxy
An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.
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Galactic coordinate system
The galactic coordinate system is a celestial coordinate system in spherical coordinates, with the Sun as its center, the primary direction aligned with the approximate center of the Milky Way galaxy, and the fundamental plane parallel to an approximation of the galactic plane but offset to its north.
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Galactic corona
The terms galactic corona and gaseous corona have been used in the first decade of the 21st century to describe a hot, ionised, gaseous component in the Galactic halo of the Milky Way.
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Galactic halo
A galactic halo is an extended, roughly spherical component of a galaxy which extends beyond the main, visible component.
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Galaxy cluster
A galaxy cluster, or cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity with typical masses ranging from 1014–1015 solar masses.
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Galaxy formation and evolution
The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies.
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Galaxy merger
Galaxy mergers can occur when two (or more) galaxies collide.
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Globular cluster
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
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Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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John Kormendy
John Kormendy is an American astronomer, currently the Curtis T. Vaughn, Jr.
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Laura Ferrarese
Laura Ferrarese is a researcher in space science at the National Research Council of Canada.
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Mass deficit
A mass deficit is the amount of mass (in stars) that has been removed from the center of a galaxy, presumably by the action of a binary supermassive black hole.
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M–sigma relation
The M–sigma (or M–σ) relation is an empirical correlation between the stellar velocity dispersion σ of a galaxy bulge and the mass M of the supermassive black hole at its center.
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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.
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NGC 4314
NGC 4314 is a barred spiral galaxy approximately 40 million light-years away in the constellation Coma Berenices.
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Sersic profile
The Sérsic profile (or Sérsic model or Sérsic's law) is a mathematical function that describes how the intensity I of a galaxy varies with distance R from its center.
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Shock wave
In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance.
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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.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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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.
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Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
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Stellar population
During 1944, Walter Baade categorized groups of stars within the Milky Way into bluer stars associated with the spiral arms and the general position of yellow stars near the central galactic bulge or within globular star clusters.
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Supermassive black hole
A supermassive black hole (SMBH or SBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses, and is found in the centre of almost all currently known massive galaxies.
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The Astronomical Journal
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
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The Astrophysical Journal
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.
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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.
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Virgo Cluster
The Virgo Cluster is a cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo.
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Redirects here:
Galactic bulge, Nuclear bulge.
References
[1] https://en.wikipedia.org/wiki/Bulge_(astronomy)