Information: - The Antlia Cluster ( or Abell S0636 ) is a cluster of galaxies located in the Hydra - Centaurus Supercluster . The Antlia Cluster is the third nearest to the Local Group after the Virgo Cluster and Fornax Cluster . Antlia 's distance from Earth is 40.5 Mpc ( 132.1 Mly ) to 40.9 Mpc ( 133.4 Mly ) and can be viewed from Earth in the constellation Antlia . The Antlia Cluster should not be confused with the Antlia Dwarf Galaxy . Antlia is classified as a rare Bautz - Morgan type III cluster , meaning it has no central dominant ( cD ) brightest cluster galaxy . However , the cluster is dominated by two massive elliptical galaxies , NGC 3268 and NGC 3258 , and contains a total of about 234 galaxies . The cluster is very dense compared to other clusters such as Virgo and Fornax , thus containing early - type galaxies and a larger portion of dwarf ellipticals . The Cluster is split into two galaxy groups , The Northern subgroup gravitating around NGC 3268 , and the Southern subgroup centered on NGC 3258 . The cluster has an overall redshift of z = 0.0087 , implying that the cluster is , like most objects in the Universe , receding from the Local Group . Using the now - obsolete scientific satellite ASCA , X-ray observations show that the cluster is almost isothermal , with a mean temperature of kT ~ 2.0 keV . - A Supercluster is a large group of smaller galaxy clusters or galaxy groups, which is among the largest-known structures of the cosmos. The Milky Way is part of the Local Group galaxy cluster (that contains more than 54 galaxies), which in turn is part of the Laniakea Supercluster. This supercluster spans over 500 million light-years, while the Local Group spans over 10 million light-years. The number of superclusters in the observable universe is estimated to be 10 million. - Sir John Frederick William Herschel, 1st Baronet (7 March 1792 11 May 1871) was an English polymath, mathematician, astronomer, chemist, inventor, and experimental photographer, who also did valuable botanical work. He was the son of Mary Baldwin and astronomer William Herschel, nephew of astronomer Caroline Herschel and the father of twelve children. - The Eridanus Group, sometimes called the Eridanus Cloud, is a nearby loose grouping of galaxies at a mean distance of approximately 75 Mly (23 2 Mpc) in the constellation Eridanus. Redshift values show that there are approximately 200 galaxies associated with the group, approximately 70% of which are spiral and irregular type galaxies whilst the remaining 30% are elliptical and lenticular types. - Latin (Latin: ) is a classical language belonging to the Italic branch of the Indo-European languages. The Latin alphabet is derived from the Etruscan and Greek alphabets. - NGC 1316 (also known as Fornax A) is a lenticular galaxy about 60 million light-years away in the constellation Fornax. NGC 1316 is a radio galaxy. It is the fourth-brightest radio source in the sky (as seen at 1400 MHz). - The Virgocentric flow (VCF) is the preferred movement of Local Group galaxies towards the Virgo cluster caused by its overwhelming gravity, which separates bound objects from the Hubble flow of cosmic expansion. The VCF can refer to the Local Group's movement towards the Virgo "Super"cluster, since its center is considered synonymous with the Virgo cluster, but more tedious to ascertain due to its much larger volume. The excess velocity of Local Group galaxies towards, and with respect to, the Virgo Cluster are 100 to 400km/s. This excess velocity is referred to as each galaxy's peculiar velocity. - A light-year is a unit of length used to express astronomical distances. It is about 9 trillion kilometres or 6 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time. - NGC 1365, also known as the "Great Barred Spiral Galaxy", is a barred spiral galaxy about 56 million light-years away in the constellation Fornax. The core is an oval shape with an apparent size of about 50 40. The spiral arms extend in a wide curve north and south from the ends of the east-west bar and form an almost ring like Z-shaped halo. The central mass in active galactic nucleus rotates close to relativistic limit (the dimensionless spin parameter is larger than 0.84). - The Milky Way is the galaxy that contains our Solar System. The descriptive "milky" is derived from the appearance from Earth of the galaxy a band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. The term "Milky Way" is a translation of the Latin ', from the Greek (', "milky circle"). From Earth, the Milky Way appears as a band because its disk-shaped structure is viewed from within. Galileo Galilei first resolved the band of light into individual stars with his telescope in 1610. Until the early 1920s, most astronomers thought that the Milky Way contained all the stars in the Universe. Following the 1920 Great Debate between the astronomers Harlow Shapley and Heber Curtis, observations by Edwin Hubble showed that the Milky Way is just one of many galaxies. - A constellation is formally defined as a region of the celestial sphere, with boundaries laid down by the International Astronomical Union (IAU). The constellation areas mostly had their origins in Western-traditional patterns of stars from which the constellations take their names. - The Hydra-Centaurus Supercluster (SCl 128), or the Hydra and Centaurus Superclusters, is a supercluster in two parts, the closest neighbour of Virgo Supercluster. - 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. Comprising approximately 1300 (and possibly up to 2000) member galaxies, the cluster forms the heart of the larger Virgo Supercluster, of which the Local Group is an outlying member. However, the Local Group experiences the mass of the Virgo Supercluster as the Virgocentric flow. It is estimated that the Virgo Cluster's mass is 1.2 out to 8 degrees of the cluster's center or a radius of about 2.2 Mpc. - The Fornax Cluster is a cluster of galaxies lying at a distance of 62 million light-years (19 megaparsecs). It is the second richest galaxy cluster within 100 million light-years, after the considerably larger Virgo Cluster. It lies primarily in the constellation Fornax, and may be associated with the nearby Eridanus Group. The Fornax Cluster is a valuable source of information about the evolution of such clusters, showing the effects of a merger of a subgroup with the main group, which in turn lends clues about the associated galactic superstructure. At the centre of the cluster lies NGC 1399. Other cluster members include NGC 1316 (the group's brightest galaxy), NGC 1365, NGC 1427A, and NGC 1404. - An air pump is a device for pushing air. Examples include a bicycle pump, pumps that are used to aerate an aquarium or a pond via an airstone; a gas compressor used to power a pneumatic tool, air horn or pipe organ; a bellows used to encourage a fire; a vacuum cleaner and a vacuum pump. - Argo Navis (the Ship Argo), or simply Argo, was a large constellation in the Earth's southern sky that has since been divided into three constellations. It represented the "Argo", the ship used by Jason and the Argonauts in Greek mythology. The genitive was "Argus Navis", abbreviated "Arg". Flamsteed and other early modern astronomers called the constellation just Navis (the Ship), genitive "Navis", abbreviated "Nav". - The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth. It is the nearest major galaxy to the Milky Way and was often referred to as the Great Andromeda Nebula in older texts. It received its name from the area of the sky in which it appears, the constellation of Andromeda, which was named after the mythological princess Andromeda. - NGC 1427A is an irregular galaxy in the constellation Eridanus. Its distance modulus has been estimated using the globular cluster luminosity function to be 31.01 0.21 which is about 52 Mly. It is the brightest dwarf irregular member of the Fornax cluster and is in the foreground of the cluster's central galaxy NGC 1399. - Abbe Nicolas Louis de La Caille, sometimes spelled Lacaille, (28 December 1713 21 March 1762) was a French astronomer and priest. The birth date given here is that of his baptism; babies were normally baptised on the day that they were born. The traditional birth date of 15 March 1713 has been questioned due to many infants of the Catholic Church being baptised on the day of their birth in the 17th and 18th centuries. - The Virgo Supercluster (Virgo SC) or the Local Supercluster (LSC or LS) is a mass concentration of galaxies that contains the Virgo Cluster in addition to the Local Group, which in turn contains the Milky Way and Andromeda Galaxies. At least 100 galaxy groups and clusters are located within its diameter of 33 megaparsecs (110 million light-years). It is one of about 10 million superclusters in the observable universe. - The Local Group is the galaxy group that includes the Milky Way. The Local Group comprises more than 54 galaxies, most of them dwarf galaxies. Its gravitational center is located somewhere between the Milky Way and the Andromeda Galaxy. The Local Group covers a diameter of (about 10 meters) and has a binary (dumbbell) distribution. The group itself is a part of the larger Virgo Supercluster, which in turn may be a part of the Laniakea Supercluster. - Ancient Greek includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD. It is often roughly divided into the Archaic period (9th to 6th centuries BC), Classical period (5th and 4th centuries BC), and Hellenistic period (3rd century BC to the 6th century AD). It is antedated in the second millennium BC by Mycenaean Greek. - A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: "direct lift", "displacement", and "gravity" pumps. - Fornax is a constellation in the southern sky, partly ringed by the celestial river Eridanus. Its name is Latin for furnace. It was named by French astronomer Nicolas Louis de Lacaille in 1756. Fornax is one of the 88 modern constellations. - A parsec (symbol: pc) is a unit of length used to measure large distances to objects outside our Solar System. One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond. A parsec is equal to about 3.26 light-years (31trillion kilometres or 19trillion miles) in length. The nearest star, Proxima Centauri, is about from the Sun. Most of the stars visible to the unaided eye in the nighttime sky are within 500 parsecs of the Sun. - Antlia (from Ancient Greek "") is a constellation in the Southern Celestial Hemisphere. Its name means "pump" in Latin; it represents an air pump. Originally Antlia Pneumatica, the constellation was established by Nicolas-Louis de Lacaille in the 18th century, though its name was later abbreviated by John Herschel. Located close to the stars forming the old constellation of the ship Argo Navis, Antlia is completely visible from latitudes south of 49 degrees north. After reading the paragraphs above, choose the best answer for the entity that related to 'antlia cluster' with the relationship of 'instance of'. Choices: - 1 - 25 - alphabet - angle - aquarium - area - band - bar - branch - centauri - century - church - cluster - constellation - day - debate - december - device - diameter - distance - dwarf - fluid - galaxy - galaxy cluster - gas compressor - greek mythology - group - irregular galaxy - language - march - mass - may - member - mythology - organ - part - pipe - priest - pump - river - shape - ship - show - size - sky - sphere - spiral galaxy - structure - subgroup - supercluster - symbol - system - term - three - two - union - unit of length - unit of time - volume - word - work - year
Answer:
galaxy cluster