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Topic: Pleiades (star cluster)

	The Pleiades in mythology \| Pleiade
		As the Pleiades cluster is close to the ecliptic (within 4°) in the constellation of Taurus it is a spring and autumnal 'seasonal' object in both the northern and southern hemispheres.
		The Greek legends of the disappearing star are echoed in Jewish [note 1], Hindu and Mongolian folklore: their basis in an actual event seems to be corroborated by astronomical evidence that a clearly visible star in the cluster became extinct towards the end of the second millennium BC.
		Makara: the wives of the stars in the Orion constellation.
	www.pleiade.org /pleiades_02.html (1692 words)

	Pleiades
		Pleiades (mythology), in Greek mythology, the seven daughters of Atlas and of Pleione, the daughter of Oceanus.
		The Pleiades are a dipper-shaped cluster of stars situated in the “shoulder” of the constellation Taurus.
		The Pleiades is also interpreted as a mother hen with her chickens, especially in Eurasia, where the star Aldebaran, which is located close to the Pleiades, is often included as a part of the constellation.
	www.kitezh.com /sevensisters/pleiades.htm (2289 words)

	The Pleiades in reality... Pleiades star cluster \| Pleiade
		This beautiful image of the Pleiades cluster was produced by David Malin of the Anglo-Australian Observatory and is the copyright of the Anglo-Australian Observatory and the Royal Observatory, Edinburgh.
		The distance of the Pleiades cluster from the Earth was determined in 1997 using direct parallax measurements from the European Space Agency Hipparcos astrometric satellite.
		The cloud – IC 349 or Barnard's Merope Nebula – is illuminated by Merope in the Pleiades star cluster.
	www.pleiade.org /pleiades_03.html (2683 words)

	Pleiades (star cluster) - Wikipedia, the free encyclopedia
		The Pleiades are a prominent sight in the Northern Hemisphere in winter and in the Southern Hemisphere in summer, and have been known since antiquity to cultures all around the world, including the Māori and Australian Aborigines, the Japanese, the Aztec and the Sioux of North America.
		The nine brightest stars of the Pleiades are named for the Seven Sisters of Greek mythology: Sterope, Merope, Electra, Maia, Taygete, Celaeno and Alcyone, along with their parents Atlas and Pleione.
		It was from this acronychal rising that the Pleiades became associated with tears and mourning.
	en.wikipedia.org /wiki/Pleiades_(star_cluster) (2455 words)

	M45, the Pleiades (Site not responding. Last check: 2007-10-08)
		The Pleiades are one of the finest and nearest examples of a reflection nebula associated with a cluster of young stars.
		The cluster itself is a group of many hundreds of stars about 400 light years away in the direction of the northern constellation of Taurus.
		However, even the brightest of the Pleiades stars (Alcyone, apparent visual mag +2.9) is relatively faint and would be inconspicuous (and nameless) if it were not a member of the cluster The faintest named star is Asterope, (V = +5.8), close to the threshold of naked eye visibility.
	www.aao.gov.au /images/captions/uks018.html (406 words)

	SPACE.com -- Stars and Space Clouds in 'Demolition Derby'
		The star Merope is in the Pleiades star cluster and is veiled by gas from at least one cloud that the cluster is passing through.
		The easy-to-find Pleiades star cluster is in the midst of what astronomers describe as a three-car cosmic pile-up as the bright stars slam into not one but two interstellar clouds of gas.
		The cluster is known to many skywatchers as the Seven Sisters for the seven stars visible with the naked eye under dark-sky conditions.
	www.space.com /scienceastronomy/pleiades_crash_031113.html (581 words)

	HubbleSite - NewsCenter - Hubble Refines Distance to Pleiades Star Cluster (06/01/2004) - Introduction
		The Pleiades cluster, named by the ancient Greeks, is easily seen as a small grouping of stars lying near the shoulder of Taurus, the Bull, in the winter sky.
		In general, stars in a cluster were born at the same time out of the same cloud of interstellar gas.
		Distances beyond that limit must be determined by indirect methods, based on comparing the brightness of distant stars with those of nearer ones of the same type, and making the assumption that both objects have the same intrinsic, or true, brightness.
	hubblesite.org /newscenter/archive/releases/2004/20 (358 words)

	star cluster concept from the Astronomy knowledge base (Site not responding. Last check: 2007-10-08)
		The stars within a globular cluster orbit each other because of their mutual gravity.
		of Population I stars, strongly concentrated in the spiral arms or the disk of the Galaxy (in fact, open clusters give a good indication of where the spiral arms are).
		Depending on their age, stars in open clusters "peel off" from the main sequence at different points (the higher the turnoff point, the younger the cluster).
	www.site.uottawa.ca:4321 /astronomy/starcluster.html (230 words)

	The Pleiades
		The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years) away.
		The figure at right, covering a somewhat larger area than the AAO photograph, shows the brightest stars in the vicinity, most of which are members of the Pleiades cluster (some appear in the same part of the sky but actually lie at a different distance).
		Stars like our sun, of which there are a few in the cluster, appear as faint flecks of light in the AAO photograph at the top of this page, and are well below the sensitivity of the human eye.
	www.naic.edu /~gibson/pleiades (1068 words)

	Pleiades - Galactic Star Cluster
		The Pleiades, the most famous galactic star cluster in the heavens, is a cluster of bright, white stars, all formed at the same time, within a large cloud of interstellar dust and gas in the constellation of Taurus.
		A blue haze accompanying the cluster is caused by a very fine dust which reflects the blue light from the stars.
		The Pleiades appears to be the first star group mentioned in astronomical literature, appearing in the Chinese annals of 2357 B.C. Job referred to them at least twice in his word Kimah.
	www.thewildrose.net /pleiades.html (510 words)

	Messier Object 45
		In 1767, Reverend John Michell used the Pleiades to calculate the probability to find such a group of stars in any place in the sky by chance alignment, and found the chance to be about 1/496,000.
		The distance of the Pleiades cluster has been newly determined by direct parallax measures by ESA's astrometric satellite Hipparcos; according to these measurement, the Pleiades are at a distance of 380 light years (previously, a value of 408 light years had been assumed).
		Apparently surrounding Aldebaran is another, equally famous open cluster, the Hyades; Aldebaran is known to be a non-member foreground star (at 68 light years distance, compared to 150 ly for the Hyades).
	www.seds.org /messier/m/m045.html (1904 words)

	HubbleSite - NewsCenter - Ghostly Reflections in the Pleiades (12/06/2000) - Introduction
		The cloud, which has been drifting through the Pleiades star cluster, is moving closer to Merope at a speed of about 6.8 miles per second (11 kilometers per second).
		Astronomers have proposed that the strong starlight shining on the dust in the cloud decelerates the dust particles.
		Thus, as the cloud approaches the star, there is a sifting of particles by size, much like grain thrown in the air to separate wheat from chaff.
	hubblesite.org /newscenter/archive/releases/2000/36 (372 words)

	JPL News -- Astronomers Measure Distance to Well-Known Star
		The cluster of stars known as the Pleiades is one of the most recognizable objects in the night sky, and for millennia has been celebrated in literature and legend.
		The star, along with "wife" Pleione and their daughters, the "seven sisters," are the principal stars of the Pleiades that are visible to the unaided eye, although there are actually thousands of stars in the cluster.
		The range of distance to the Pleiades cluster may seem somewhat imprecise, but in fact is accurate by astronomical standards.
	www.jpl.nasa.gov /releases/2004/26.cfm (763 words)

	Two Hundred Fifty Sisters - Pleiades star cluster - includes related article on star-watching in December and January ...
		At approximately 400 light-years away, the Pleiades are among the nearest of the open star clusters.
		The entire star swarm is enveloped in a faint, diffuse cloud--apparently dust and perhaps larger particles that reflect starlight.
		Saturn, a zero-magnitude object amid the faint stars of Pisces, is high in the southeast at nightfall and sets during December between 1:30 and 3:30 a.m.
	www.findarticles.com /p/articles/mi_m1134/is_10_107/ai_53378975 (970 words)

	Pleiades Mythology - 7 Sisters - Crystalinks (Site not responding. Last check: 2007-10-08)
		Merope youngest of the seven Pleiades, was wooed by Orion.
		After Atlas was forced to carry the world on his shoulders, Orion began to pursue all of the Pleiades, and Zeus transformed them first into doves, and then into stars to comfort their father.
		The constellation of Orion is said to still pursue them across the night sky.In the Pleiades star cluster only six of the stars shine brightly, the seventh, Merope, shines dully because she is shamed for eternity for having an affair with a mortal.
	www.crystalinks.com /pleiades2.html (1427 words)

	metAMORphosis: Conscious Evolution Newsletter
		The Pleiades cluster, although it appears from Earth as no bigger than a full moon, has figured in the star-lore of cultures since before there were written words to describe the people’s stories.
		In the Greek astrological tradition, these stars are associated with blindness, with a bad death, with conflict between the genders, and with an exaggerated femininity in men.
		In addition to tracing their origins to the Pleiades, the Mayans also speak of the Pleiades as the seven great powers of the Cosmos, the seven Suns that are the brothers of our Sun, and the rattle of the cosmic serpent.
	www.consciousevolution.com /metamorphosis/0211/pleiades0211.htm (3679 words)

	Pawnee Star Calendar
		Oftentimes, November is called the month of the Pleiades, because this most famous of star clusters adorns the November night sky from dusk till dawn.
		The Pleiades star cluster -- sometimes referred to as the Seven Sisters -- is a misty-looking dipper-shaped formation of six stars that marks the shoulder of the constellation Taurus the Bull.
		The Pleiades' midnight culmination, which happened but once a year, was a sure sign that the winter solstice -- the shortest day of the year -- was only one month away.
	www.idialstars.com /psc.htm (643 words)

	Spectral Classification and the Pleiades - Introduction and Directions (Site not responding. Last check: 2007-10-08)
		The Pleiades spectra are also consistent with themselves (notice how the few labelled lines follow in the same place from spectrum to spectrum), however they are not on the same scale as the standard spectra.
		You must use the relative intensities of two different lines (in the standard and the Pleiades) to decide this, and not the intensity of a single Pleiades line versus a single standard line because the brightness of the Pleiades spectra is not the same as the brightness of the standards.
		The stars in the Pleiades are just normal stars, just like the stars that you plotted from the table, assuming that both are main sequence stars and that the laws of physics in the Pleiades is the same as for these known stars.
	www.astro.lsa.umich.edu /Course/Labs/pleiades/pl_intro.html (1870 words)

	Pleiades Stars: Star Light! How Bright?
		He assigned each star a number value from 1 to 6 depending on how bright the star seemed to be in the sky.
		Stars with less brightness counts have a (higher or lower) magnitude.
		Stall, Julius D.W. The New Patterns in the Sky, Myths and Legends of the Stars.
	hou.lbl.gov /~vhoette/Explorations/PleiadesStars (653 words)

	The Pleiades M45: Stars and nebulae
		The bright stars and associated nebulosities in the Pleiades star cluster M45
		The star Maia (20 Tauri) was subject to speculation when Otto Struve brought up the hypothesis that it might be the representative of a new type of variables of spectral type B7-A3 near-main sequence stars, of some ours period and small amplitudes.
		North of the boundary of the Pleiades lies the diffuse nebula IC 1990, found by Stratonoff, an emission nebula.
	www.seds.org /messier/more/m045_tab.html (408 words)

	Cheshire Starwatch - The Pleiades (Site not responding. Last check: 2007-10-08)
		A collection of young stars just being born, it is moving through the interstelllar medium of gas and dust, producing a wake in the interstellar medium, similar to a boat passing over water.
		The Pleiades star cluster is surronded by a cloud of dust and gas.
		It does not appear that the stars in the Pleiades formed from the cloud of gas and dust which enshrouds it.
	www.tmclark.com /Starwatch/12_07.html (589 words)

	APOD: 2002 December 1 - The Pleiades Star Cluster (Site not responding. Last check: 2007-10-08)
		Explanation: It is the most famous star cluster on the sky.
		Seven Sisters and M45, the Pleiades is one of the
		The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across.
	antwrp.gsfc.nasa.gov /apod/ap021201.html (103 words)

	The Pleiades (M45) star cluster
		It consists of many bright, hot, young stars that were all formed at the same time around 100 million years ago within a large cloud of interstellar dust and gas.
		This star cluster lie some 425 light years away in the constellation of Taurus.
		Alcyone is the brightest star in Pleiades star cluster, its visual magnitude is 2.86.
	www.skyfactory.org /m45/m45.htm (364 words)

	Pleiades Star Cluster (Site not responding. Last check: 2007-10-08)
		The brilliant stars seen in this image are members of the popular open star cluster known as the Pleiades, or Seven Sisters.
		The color-composite image of the Pleiades star cluster was taken by the Palomar 48-inch Schmidt telescope.
		The Pleiades photo was made from three separate images taken in red, green, and blue filters.
	www.inspi.net /best-of-hubble-telescope/slides/2004-20.html (195 words)

	The Pleiades Star Cluster [Free Republic]
		The Pleiades can be seen without binoculars from even the depths of a light-polluted city.
		Also visible with binoculars is the nebula in the sword of Orion, various galaxies and star clusters, the rings of Saturn, the Galilean moons of Jupiter.
		That particular area of the sky is rich in binocular viewable star clusters.
	www.freerepublic.com /forum/a38b98b8676c9.htm (968 words)

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