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Open clusters in the constellation Perseus
The Double Cluster, also known as Caldwell 14, consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ (chi) Persei, respectively)
Double_Cluster
Type of star cluster
astronomer Ptolemy mentions the Praesepe Cluster, the Double Cluster in Perseus, the Coma Star Cluster and the Ptolemy Cluster, while the Persian astronomer Al-Sufi
Open_cluster
Constellation in the northern celestial hemisphere
Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient
Perseus_(constellation)
Astronomical objects catalogued by Patrick Moore
many of the sky's brightest deep-sky objects, such as the Hyades, the Double Cluster (NGC 869 and NGC 884), and the Sculptor Galaxy (NGC 253). The Messier
Caldwell_catalogue
Group of stars
Pleiades and Hyades in Taurus. The Double Cluster of h+Chi Persei can also be prominent under dark skies. Open clusters are often dominated by hot young
Star_cluster
Open cluster in the constellation Perseus
cluster is around 14 million years old. It is the west component of the Double Cluster with NGC 884. NGC 869 and 884 are often designated h and χ (chi) Persei
NGC_869
Open cluster in the constellation Perseus
is an open cluster of stars located 7,640 light years away in the constellation of Perseus. It is the east component of the Double Cluster with NGC 869
NGC_884
Star in the constellation Perseus
star located in the constellation of Perseus. It is located within the Double Cluster, 7,250+470 −420 light-years away. It is a semiregular variable star
SU_Persei
Ancient Greek hero and founder of Mycenae
variable star Algol and some deep sky objects such as Messier 34, the Double Cluster, the California Nebula, and the Little Dumbbell Nebula (Messier 76)
Perseus
Set of computers configured in a distributed computing system
cluster is a group of autonomous computers that work together so that they can be viewed as a single system. Unlike grid computers, computer clusters
Computer_cluster
Red Supergiant star in the constellation Perseus
approximately 9,000 light-years from the Solar System. It can be seen near the Double Cluster of Perseus through a telescope or binoculars. PR Persei is a cool, luminous
PR_Persei
Stellar association
Celestial Hemisphere in the constellation Perseus. It is centered on the Double Cluster (NGC 869 and NGC 884), and has lent its name to the Perseus Arm of the
Perseus_OB1
groups and galaxy clusters. Defining the limits of galaxy clusters is imprecise as many clusters are still forming. In particular, clusters close to the Milky
List of galaxy groups and clusters
List_of_galaxy_groups_and_clusters
One of two major spiral arms of the Milky Way galaxy
Double Cluster and a number of Messier objects: The Crab Nebula (M1) Open Cluster M36 Open Cluster M37 Open Cluster M38 Open Cluster M52 Open Cluster
Perseus_Arm
Constellation in the northern celestial hemisphere
closer, superimposed double star; it consists of a 7th-magnitude primary and 10th-magnitude secondary. The other prominent open clusters in Cassiopeia are
Cassiopeia_(constellation)
Super star cluster in the constellation Dorado
NGC 1850 is a double cluster and a super star cluster in the Dorado constellation, located in the northwest part of the bar of the Large Magellanic Cloud
NGC_1850
Star in the constellation Perseus
variable red supergiant star in the constellation Perseus, between the Double Cluster and the border with Andromeda. In 1917 it was announced that Ida E.
XX_Persei
Star in the constellation Perseus
a red supergiant or hypergiant located near the Double Cluster in Perseus, north of the open cluster NGC 869. It is a member of the Perseus OB1 association
S_Persei
Blue supergiant star in the constellation Perseus
Perseus OB1 stellar association. It lies close to the Double Cluster and is considered a cluster member. In 1999, 10 Persei was given the variable star
10_Persei
Open cluster in the constellation Carina
known as the Pincushion Cluster, Football Cluster, the Black Arrow Cluster, or the Wishing Well Cluster, is an open cluster some 405 parsecs from Earth
NGC_3532
Star in the constellation Perseus
RS Persei is a red supergiant variable star located in the Double Cluster in Perseus. The star's apparent magnitude varies from 7.82 to 10.0, meaning it
RS_Persei
Method for approximating many-body systems
reference, which is not size-consistent, at the CCSDT (coupled cluster single-double-triple) level of theory, which provides an almost exact, full-CI-quality
Coupled_cluster
Index of articles associated with the same name
the name of a star and an open cluster: χ Persei, the star 7 Persei χ Persei, or NGC 884, one half of the Double Cluster This set index article includes
Chi_Persei
Star-forming region in Cassiopeia
hosted in both nebulae. Their position is about 5° north of the famous Double Cluster in Perseus. Region W3, also catalogued as NGC 896, is the smallest and
Heart_and_Soul_Nebula
Twenty-third letter of the Latin alphabet
is double-u, plural double-ues. The name "double-u" reflects stages in the letter's evolution when it was considered two of the same letter, a double U
W
Open cluster in the constellation Aquila
NGC 6755, with the pair forming a visual double cluster. However, they probably do not form a binary cluster system since they have different ages and
NGC_6755
1086/159092. ESO-A Galactic Crash Investigation NASA: Hubble Views a Double Cluster of Glowing Galaxies Abell's 1958 paper and catalog Abell, Corwin and
List_of_Abell_clusters
Stars with a supergiant luminosity class with a spectral type of K or M
Philip (2002). "The Star Formation History and Mass Function of the Double Cluster h and χ Persei". The Astrophysical Journal. 576 (2): 880–893. arXiv:astro-ph/0205130
Red_supergiant
Star in the constellation Perseus
It is part of the Perseus OB1 stellar association and lies near the Double Cluster. This object is near the lower limit of visibility to the naked eye
5_Persei
European Space Agency space mission
Space Administration/ESA Double Star mission operated alongside Cluster II from 2004 to 2007. The first of the four Cluster II satellites to re-enter
Cluster_II_(spacecraft)
Open cluster in the constellation Cassiopeia
the cluster, another magnitude 10.8 red giant. Another bright foreground object is the double star Struve 131, but is not a member of the cluster. Cluster
Messier_103
Open cluster in the constellation Taurus
NGC 1817 is an open cluster of stars in the constellation of Taurus. It was discovered by German-English astronomer William Herschel in February 1784
NGC_1817
List from the Alphabet Direction (αβ)
Abel (globular star clusters) Abell — Abell catalogue Abetti — Giorgio Abetti (double stars) Abt — (for example: open star cluster Abt 1 = Biurakan 4 =
List of astronomical catalogues
List_of_astronomical_catalogues
Star in the constellation Perseus
to be a member of the Double Cluster. T Persei is a member of the Perseus OB1 association around the h and χ Persei open clusters, around 2 degrees north
T_Persei
American astronomer
most the usual relatively young star clusters including few supergiant stars, 18 were found in the Double Cluster of Perseus by 2007, which Robert F. Wing
William_P._Bidelman
in another hypothetical open cluster, the accordingly named P Cygni Cluster, which is thought to form a double cluster with IC 4996. The hypothesis was
IC_4996
Star in the constellation Perseus
Persei is a blue supergiant member of NGC 869, one of the Perseus Double Cluster open clusters. It is an irregular variable star. At a magnitude of about 6
V520_Persei
Constellation in the northern celestial hemisphere
2000, p. 132. Staal 1988, pp. 7–14, 17. "The Andromeda Galaxy and the Double Cluster in al-Sufi's Book of the Fixed Stars". Ian Ridpath's Star Tales. Retrieved
Andromeda_(constellation)
Ribbon device used in the United States
An oak leaf cluster is a ribbon device to denote preceding decorations and awards consisting of a miniature bronze or silver twig of four oak leaves with
Oak_leaf_cluster
constellation Andromeda Bayer's Chi Persei is NGC 884, the eastern cluster of the Double Cluster – Wagman, Morton (2003), Lost Stars, McDonald & Woodward, ISBN 0939923785
Table of stars with Bayer designations
Table_of_stars_with_Bayer_designations
Neurological disorder
Cluster headache is a neurological disorder characterized by episodes of severe headaches on one side of the head, typically around the eye and temple
Cluster_headache
Astronomical treatise by Claudius Ptolemy
entries were non-stellar, i.e. the Double Cluster in Perseus, M44 (Praesepe) in Cancer, and the globular cluster Omega Centauri. Ptolemy states that
Almagest
Variable carbon star in the constellation Perseus
Persei is located on the outskirts of the Trumpler 2 open cluster, near the famous Double Cluster. At 1,500 pc, DY Persei is thought to be much further away
DY_Persei
Open cluster in the constellation Carina
NGC 2516 (also known as Caldwell 96) is an open star cluster in the southern sky in the constellation Carina discovered by Abbe Lacaille in 1751-1752
NGC_2516
Dense musical chord
A tone cluster is a musical chord comprising at least three adjacent tones in a scale. Prototypical tone clusters are based on the chromatic scale and
Tone_cluster
Open cluster in the Orion Nebula in the constellation Orion
dispersion of the stars of the cluster. One of the components of the cluster (Theta1 Orionis F, lower left) is a double star. The Chandra X-ray Observatory
Trapezium_Cluster
on the eastern side of the constellation and connected to the famous Double Cluster in Perseus. The star-forming regions of Cassiopeia are located in the
Star-forming regions of Cassiopeia
Star-forming_regions_of_Cassiopeia
Country with no ocean coastline
African clusters into one, making it the biggest contiguous cluster in the world instead.[citation needed] The Central and Southern Asian cluster and the
Landlocked_country
Class of commutative rings
Cluster algebras are a class of commutative rings introduced by Fomin and Zelevinsky (2002, 2003, 2007). A cluster algebra of rank n is an integral domain
Cluster_algebra
Catalogue of astronomical objects
catalogue is a subset of William Herschel's original Catalogue of Nebulae and Clusters of Stars, selected by Brenda F. Guzman (Branchett), Lydel Guzman, Paul
Herschel_400_Catalogue
Collection of bound atoms or molecules
ionized cluster of metals. Cluster ion beams are produced by bombarding the surface with high energetic inert gas (krypton and xenon) ions. The cluster production
Nanocluster
Type-cD elliptical galaxy in the constellation of Ursa Major
2MASX J10222849+5006200 is the brightest cluster galaxy (BCG) inside the galaxy cluster, Abell 980. The cluster is located at z = 0.1582, and is X-ray luminous
2MASX_J10222849+5006200
Method for estimating parameters
series and cross-sectional correlation in the error term look into double clustering by firm and year. Capital asset pricing model Standard errors in regression
Fama–MacBeth_regression
Computer file system architecture design
record) can be larger than the number of sectors used by data (clusters × sectors per cluster), FATs (number of FATs × sectors per FAT), the root directory
Design_of_the_FAT_file_system
Globular cluster in the constellation Pegasus
over 100,000 stars,the cluster is notable for containing a large number of variable stars (112) and pulsars (8), including one double neutron star system
Messier_15
Pair of telescopes mounted side-by-side
magnifications. Some open clusters, such as the bright double cluster (NGC 869 and NGC 884) in the constellation Perseus, and globular clusters, such as M13 in
Binoculars
Open star cluster in the constellation Orion
roughly 1,300 ly (400 pc) away from the Sun. Included within the cluster is the double star Meissa (Lambda Orionis). With the rest of Orion, it is visible
Lambda_Orionis_Cluster
Blue supergiant star in the constellation Perseus
Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466
9_Persei
2015). "Touhou Project on PlayStation: Adventures of Scarlet Curiosity, Double Focus, Mystery Gensokyo DLC, and Touho Sky Arena announced". Gematsu. "Game
List of Touhou Project fan games
List_of_Touhou_Project_fan_games
Catalogue of 245 star clusters compiled By British astronomer Philibert Jacques Melotte
of 245 star clusters compiled by British astronomer Philibert Jacques Melotte. It was published in 1915 as A Catalogue of Star Clusters shown on Franklin-Adams
Melotte_catalogue
Cluster manager designed by Google
Borg is a cluster manager used by Google since 2008 or earlier. It led to widespread use of similar approaches, such as Docker and Kubernetes. Apache
Borg_(cluster_manager)
Catalogue of open clusters made by Swedish astronomer Per Collinder
properties of open galactic clusters and their spatial distribution. The catalogue contains 452 open clusters, 11 globular clusters, 6 asterisms, 1 stellar
Collinder_catalogue
Cluster of three or more metals
Metal cluster compounds are a molecular ion or neutral compound composed of three or more metals and featuring significant metal-metal interactions. The
Metal_cluster_compound
Open cluster in the constellation Perseus
larger Double Cluster. The stars Gamma Persei and Eta Persei point in the general direction of the open cluster. Trumpler 2 - a nearby open cluster "NGC
NGC_957
Star in the constellation Taurus
κ Tauri) is a double star in the constellation Taurus, the two components κ1 Tauri and κ2 Tauri both members of the Hyades open cluster. The pair are
Kappa_Tauri
2016 award ceremony for music
Your Mama (George Manahan & San Francisco Ballet Orchestra) Fields: Double Cluster; Space Sciences (Jan Kučera, Gloria Chuang & Moravian Philharmonic Orchestra)
58th_Annual_Grammy_Awards
Hash collision resolution technique
performance but is most sensitive to clustering, while double hashing has poor cache performance but exhibits virtually no clustering; quadratic probing falls in
Open_addressing
Consonant followed by a strong burst of air
scholars[who?] interpret them as consonant clusters as well. In Icelandic, preaspirated stops contrast with double stops and single stops: Preaspiration is
Aspirated_consonant
Five-star system in the constellation Orion
the "double" star Struve 761 (or STF 761). It is three arc minutes from σ Orionis, which is also known as Struve 762. Over 30 other probable cluster members
Sigma_Orionis
Galaxy in the constellation Virgo
supergiant (cD) lenticular galaxy at the center of the Abell 2029 galaxy cluster. It has an isophotal diameter at about 123.65 to 169.61 kiloparsecs (400
IC_1101
German astronomer
Helsinki, Krueger carefully determined the position of the stars of the Double Cluster in Perseus. The large proper motion of the star Groombridge 34 was first
Adalbert_Krueger
Open cluster within the Rosette nebula, in the constellation Monoceros
Satellite Cluster. This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind. The age of this cluster has
NGC_2244
Key or hash function should avoid clustering, the mapping of two or more keys to consecutive slots. Such clustering may cause the lookup cost to skyrocket
Key_clustering
Multiple star in the constellation Taurus
within about 2.5 parsecs of the center of, the Hyades star cluster, the nearest open cluster to the Sun. Based upon parallax measurements, Gamma Tauri
Gamma_Tauri
German astronomer (1846–1901)
triangulation of the Beehive Cluster in 1894 and the two star clusters h Persei and χ Persei, which together form the Double Cluster, between 1891 and 1896
Wilhelm_Schur
Open cluster in the constellation Camelopardalis
brightest candidate members of the cluster is the eclipsing binary SZ Cam, which is a component of a visual double star ADS 2984. There are eleven variable
NGC_1502
Non-periodic comet
peak magnitude of 8.3 on 6 April, and passed 1.5 degrees south of the Double Cluster in Perseus on 23 April. Preliminary calculations of its orbit by Brian
C/2009_F6_(Yi–SWAN)
Oort cloud comet
and Messier 82 on May 22, 2020 C/2017 T2 (centre) passing near the Double Cluster on January 23, 2020 Horizons output. "Barycentric Osculating Orbital
C/2017_T2_(PanSTARRS)
Group of related genes in genomic DNA
A gene cluster is a group of two or more genes found within an organism's DNA that encode similar polypeptides or proteins which collectively share a
Gene_cluster
Open cluster in the constellation Cepheus
range from 4 to 11.9 million years. At the center of the cluster lies DH Cephei, a close, double-lined spectroscopic binary system consisting of two massive
NGC_7380
Chinese-European joint satellite
enabled Double Star to operate simultaneously with ESA's Cluster mission. The first equatorial spacecraft (Double Star 1, also known as DoubleStar1, Tan
Double_Star_(satellite)
Prison in Idaho, United States
maximum-security prison located near Kuna, Idaho, United States, one of a cluster of seven detention facilities known as the "South Boise Prison Complex"
Idaho Maximum Security Institution
Idaho_Maximum_Security_Institution
Brightest galaxy within a galaxy cluster
A brightest cluster galaxy (BCG) is defined as the brightest galaxy in a cluster of galaxies. BCGs include the most massive galaxies in the universe. They
Brightest_cluster_galaxy
Astronomical objects catalogued by Charles Messier
des Nébuleuses et des Amas d'Étoiles [fr] (Catalogue of Nebulae and Star Clusters). Because Messier was interested only in finding comets, he created a list
Messier_object
Multiple star system in the constellation Carina
clusters in the galaxy. The Arches Cluster is around 2.5 million years old, the Quintuplet cluster nearly double that, and the various open clusters containing
HD_97950
Classification in immunology
The cluster of differentiation (also known as cluster of designation or classification determinant and often abbreviated as CD) is a protocol used for
Cluster_of_differentiation
current initial consonant clusters in use are doubled letters like ㄲ. The Haerye allowed for the use of initial consonant clusters containing different letters
Obsolete_Hangul_jamo
Proteins with iron-sulfur clusters
of iron–sulfur clusters containing sulfide-linked di-, tri-, and tetrairon centers in variable oxidation states. Iron–sulfur clusters are found in a variety
Iron–sulfur_protein
Barred spiral galaxy in the Local Group
The cluster with the greatest apparent brightness is G76 which is located in the southwest arm's eastern half. Another massive globular cluster, named
Andromeda_Galaxy
Globular cluster of stars in the Milky Way
many distant globular clusters in galaxies far behind NGC 6397. Hubble's view of globular cluster NGC 6397 NGC 6397 region double observation HST and JWST
NGC_6397
Open cluster in the constellation of Scorpius
NGC 6231 (also known as Caldwell 76 or the Baby Scorpion Cluster) is an open cluster in the southern sky located half a degrees north of Zeta Scorpii
NGC_6231
Intelligence of machines
Norvig (2021, pp. 653) (definition), Russell & Norvig (2021, pp. 738–740) (cluster analysis), Russell & Norvig (2021, pp. 846–860) (word embedding) Supervised
Artificial_intelligence
Concept in machine learning
Double descent in statistics and machine learning is the phenomenon where a model's error rate on the test set initially decreases with the number of parameters
Double_descent
Most populous city in the United States
populated major city in the United States. New York City has more than double the population of Los Angeles, the country's second-most populous city.
New_York_City
Notional club occupied by those who died at age 27
for their high-risk lifestyles. The original basis for the notion was a cluster of prominent musicians' deaths at the age of 27 between 1969 and 1971,
27_Club
Cluster of kofun burial mounds in Ōno, Chūbu, Japan
The No Kofun Group (野古墳群, No Kofun-gun) is cluster of small kofun burial mounds located in the Ono neighborhood of the town of Ōno, Ibi District, Gifu
No_Kofun_Cluster
Globular cluster in the constellation Canes Venatici
8 in) aperture, the cluster has a bright core with a diameter of about 6 arcminutes and spans a total of double that. This cluster is one of the largest
Messier_3
Galaxy in the constellation Virgo
intermediate spiral galaxy located not far from the center of the Virgo Cluster of galaxies, roughly 55 million light-years away. It was discovered by
NGC_4216
Hypothetical invisible cosmic material
position in galactic collisions, the motion of galaxies within galaxy clusters, and cosmic microwave background anisotropies. Dark matter is thought to
Dark_matter
World Wide Web content existing on darknets
Policy Journal. 32. "Large-Scale Monitoring for Cyber Attacks by Using Cluster Information on Darknet Traffic Features". Procedia Computer Science. 53
Dark_web
DOUBLE CLUSTER
DOUBLE CLUSTER
Surname or Lastname
English
English : of uncertain origin; perhaps derived from the vocabulary word soul as a term of affection.French (Soulé) : variant of Soulier 1.George Soule (1600–80), one of the passengers on the Mayflower in 1620, was one of the founders of Duxbury, MA, where he became comparatively wealthy. He left eight children.
Male
English
Anglicized form of Irish Gaelic Dubhghall, DOYLE means "black stranger."Â
Boy/Male
Hindu, Indian
Money; Russian Currency
Girl/Female
Christian, Hindu, Indian, Kannada
Money
Surname or Lastname
French
French : from a reduced form of the Germanic personal name Hildo (see Hildebrand, Houde).French : habitational name from any of several places in Normandy called La Houle or Les Houles, named in Old French with the singular or plural of houle ‘cave’.English : variant of Hole.
Boy/Male
British, Christian, English
Dark Water; In the Seventeenth Century; Diminutive of Douglas
Male
English
English name derived from the vocabulary word, from Latin nobilis, NOBLE means "noble."
Surname or Lastname
English
English : variant of Dibble.Altered spelling of German Deibel or Deubel.
Surname or Lastname
English
English : habitational name from Wombwell in South Yorkshire, named with the Old English byname Wamba meaning ‘belly’ (or this word used in a transferred topographical sense) + Old English well(a) ‘spring’, ‘stream’.
Surname or Lastname
English
English : from a variant of the medieval personal name Tebald, Tibalt (see Theobald).
Surname or Lastname
English
English : possibly a variant of Goble or Gobel.Perhaps an Americanized spelling of French Gobeil.
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : nickname from Old French doubel ‘twin’ (literally ‘double’, from Late Latin duplus, classical Latin duplex, from du(o) ‘two’ + plek, a root meaning ‘fold’).
Girl/Female
Latin
Mistress of the home.
Girl/Female
Scottish
From the Gaelic 'dubhglas' meaning dark water, dark stream, or from the dark river.
Surname or Lastname
English
English : variant of Coble.Americanized spelling of German Kobel.
Surname or Lastname
English
English : from the medieval personal name Dobbe, one of several pet forms of Robert in which the initial letter was altered. Compare Hobbs.
Surname or Lastname
English
English : variant spelling of Dowdell.Possibly an altered spelling of German Daudel, Dautel, variants of Dietz.
Boy/Male
Hindu
Born during the rainy season, Money
Surname or Lastname
English
English : nickname for a sickly person, from French debile ‘frail’, ‘weak’ (from Latin debilis).Americanized spelling of German Diebel.
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : variant of Double.In some cases, probably an altered spelling of South German Dobel or Döbel, a topographic name for someone who lived in a gorge or deep valley, Middle High German southern dialect tobel.
DOUBLE CLUSTER
DOUBLE CLUSTER
DOUBLE CLUSTER
DOUBLE CLUSTER
DOUBLE CLUSTER
DOUBLE CLUSTER
DOUBLE CLUSTER