
	Where results make sense

Topic: Ursa Major moving cluster

Related Topics

major general

Major League Baseball All Star Game

Major League Soccer

major scale

major leagues

Ursa Major

majority government

Scipio Africanus Major

Major League Lacrosse

major third

major histocompatibility complex

In the News (Thu 31 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Ursa Major Moving Group - Wikipedia, the free encyclopedia
		All stars in the Ursa Major Moving group are in roughly the same location in the Milky Way Galaxy, are moving in roughly the same direction at roughly the same speed, contain roughly the same mix of metals, and, based on stellar theory, appear to be roughly the same age.
		The Ursa Major Moving Group was discovered in 1869 by Richard A. Proctor, who noticed that, except for Dubhe and Alkaid, the stars of the Big Dipper asterism all have proper motions heading towards a common point in Sagittarius.
		The core of the moving group consists of 14 stars, of which 13 are in the Ursa Major constellation and the other is in the neighboring constellation of Canes Venatici.
	en.wikipedia.org /wiki/Ursa_Major_moving_group (638 words)

	Beehive Cluster - Wikipedia, the free encyclopedia
		The Beehive Cluster (also known as Praesepe, Messier 44 or NGC 2632) is an open cluster in the constellation Cancer.
		The cluster was known to Aratus by 260 BC and Charles Messier included it in his catalogue of cometlike objects despite its obvious nature as a star cluster.
		The Beehive Cluster lies at a distance of about 577 light years from Earth, making it one of the closest clusters after the Ursa Major Moving Cluster, the Hyades and the Pleiades.
	en.wikipedia.org /wiki/Beehive_Cluster (175 words)

	The Ursa Major Moving Cluster, Cr 285
		In case of this cluster, the motion is eastward and south, toward a convergence point about 130 degrees away in eastern Sagittarius, approximately at RA 20:24 and Dec -37.
		It seems that these stars are lost "former" cluster members which have their origin in the Ursa Major cluster, but escaped due to mutual encounters, tidal forces of the Milky Way, or encounters with large interstellar clouds and other clusters.
		Now as they have left the cluster, their orbits around the Milky Way Galaxy's center is still similar to that of the cluster so that they have a common motion.
	www.seds.org /messier/xtra/ngc/uma-cl.html (515 words)

	Encyclopedia Search
		Major is a constellation visible throughout the year...wain means wagon).
		Major The star Polaris, the Pole Star, can be found by measuring a line...
		Major Stream, a group of stars that are all ex-members of the
	www.encyclopedian.com /search.php?searWords=Ursa (209 words)

	Other known galaxies
		NGC 104 Globular Cluster 47 Tucanae (Lacaille I, Bennett 2, Caldwell 106) in Tucana
		NGC 4833 Globular Cluster (Lacaille I. 4, Bennett 56, Caldwell 105) in Musca
		NGC 5139 Omega Centauri Globular Cluster (Lacaille I.
	pages.infinit.net /bluhaze/Glxs2.htm (1240 words)

	Wikinfo \| Star cluster (Site not responding. Last check: 2007-10-26)
		The brightest globular cluster is Omega Centauri, visible with the naked eye from the southern hemisphere.
		Of the well known clusters, the Hyades and the Pleiades, the Hyades are very nearly a moving cluster, being relatively sparse and well separated.
		The majority of stars that have to be formed are those of the classes similar to our sun, F, G and K. These will burn steadily for billions of years and not be so violent as to evaporate the nebula before the cluster has grown to the size needed to be a globular.
	www.wikinfo.org /wiki.php?title=Star_cluster (787 words)

	Mizar
		Mizar is a star in the constellation Ursa Major, lying just at the corner of the Big Dipper's handle.
		The components are all members of the Ursa Major moving cluster, a mostly dispersed group of stars sharing a common birth, as determined by proper motion.
		Mizar is also the name of a language for writing strictly formalized mathematical definitions and proofs, for a computer program to check these proofs, and for a library containing definitions and theorems.
	www.ebroadcast.com.au /lookup/encyclopedia/mi/Mizar.html (335 words)

	"Ursa Major, The Great Bear" -- skw9705h (Site not responding. Last check: 2007-10-26)
		They are part of a cluster of stars called the "Ursa Major Moving Cluster." There are ten other certain members of this cluster and one whose membership is uncertain.
		Of the remaining ten, one is in Draco, one is in Leo Minor (a small constellation between Ursa Major and Leo not shown on this month's chart), and the others are all in Ursa Major itself.
		This is the closest cluster of stars to the Sun, similar to the Pleiades in Taurus but with many fewer stars.
	www.as.wvu.edu /~jel/skywatch/skw9705h.html (658 words)

	Descendants of the Dipper by Ken Croswell
		Although the Ursa Major moving group is not a genuine star cluster--it's too spread out--it is the closest stellar gathering to Earth that shares a common origin.
		In 1869, he discovered celestial moving groups: "I find that in parts of the heavens the stars exhibit a well-marked tendency to drift in a definite direction." He noticed that the Big Dipper's five central stars share the same proper motion, or apparent movement across the sky from year to year.
		Before the Ursa Major stars were born, the neutrons in one or more red giants built the s-process elements by hitting copper nuclei and depleting that element.
	www.kencroswell.com /DescendantsOfTheDipper.html (2431 words)

	Ursa Major
		Ursa Major, the Greater Bear is the third largest constellation in the sky.
		In this case, the Big Dipper is part of the constellation Ursa Major.
		Mizar B is sixth magnitude and believed to be composed of three type A main sequence stars, but irregularities in the orbital path of Mizar B suggests the presence of yet another star with the period of 57 years.
	starryskies.com /The_sky/constellations/ursa_major.html (2377 words)

	What's Up - Deep Sky (June)
		Alpha Ursae Majoris (Duhbe) owes it's "alpha" designation not to preeminent brightness (as is usually the case in constellations), but to it's position as the first of the seven stars of the "big dipper".
		Gamma Ursae Majoris (Phecda) forms, with Beta, the bottom of the dipper's handle, and is a blue-white star very similar to Beta: 90 light years away, 75 times as bright as our sun, and also a true member of the dipper cluster.
		Iota Ursae Majoris (Talitha) is the brighter of two stars marking the front foot of the great bear, in the southwestern portion of Ursa Major where it borders Leo Minor.
	www.sciencecenter.net /whatsup/06/umjstars.htm (2311 words)

	spacegazer - December 2005
		These clusters are formed when stars are born together over a relatively short period from the same cloud of dust and gas.
		This cluster is known as the Hyades and is easily identified as the group of stars with and obvious V shape that forms the “head” of the Bull of the constellation.
		The cluster is moving away from us at some speed and towards a point in the sky near Betelgeuse in Orion.
	www.spacegazer.com /december-2005-g.asp (776 words)

	APOD Search Results for "moving cluster"
		As the fast stellar wind runs into slow moving gas a shock front is formed, analogous to the bow wave of a boat moving through water or a plane traveling at supersonic speed.
		Moving the cursor over the image identifies individual star clusters, with the relatively young (few billion year-old) clusters circled in blue, and the anticipated 12 billion year-old clusters circled in red.
		Moving away from the center, south and east across the nebula (upper right to lower left), the hot, blustery environment gives way to dense molecular gas, absorbing low energy x-rays while revealing the penetrating high energy x-rays from embedded stars.
	antwrp.gsfc.nasa.gov /cgi-bin/apod/apod_search?moving+cluster (3990 words)

	SCYON: Paper abstracts (Site not responding. Last check: 2007-10-26)
		Ursa Major / Hyades / Coma Berenices / Pleiades / Praesepe / Alpha Persei
		Assuming that cluster members share the same velocity vector (apart from a random dispersion), we apply a maximum-likelihood method on astrometric data from Hipparcos to compute radial and space velocities (and their dispersions) in the Ursa Major, Hyades, Coma Berenices, Pleiades, and Praesepe clusters, and for the Scorpius-Centaurus, alpha Persei, and `HIP 98321' associations.
		The radial motion of the Hyades cluster is determined to within 0.47 km/s (standard error), and that of its individual stars to within 0.6 km/s.
	www.univie.ac.at /webda/scyon/Madsen.html (297 words)

	Big Dipper
		The second star from the end of the handle of the Big Dipper, Mizar (Zeta Ursa Majoris), is an interesting multiple star system made up of four stars.
		However, Mizar and Alcor are members of the nearest star cluster to the sun, the Ursa Major moving cluster, Collinder 285.
		The components of the Mizar multiple star system are Mizar A (Zeta 1 Ursa Majoris at magnitude 2.27) and Mizar B (Zeta 2 Ursa Majoris at magnitude 3.95), located 14.42 arc seconds away.
	www.astropix.com /HTML/C_SPRING/BIGDIP.HTM (447 words)

	APOD: 2006 March 17 - The Big Dipper Cluster (Site not responding. Last check: 2007-10-26)
		But surprisingly, most of the big dipper stars do seem to be headed in the same direction as they plough through space, a property they share with other stars spread out over an even larger area across the sky.
		Their measured common motion suggests that they all belong to a loose, nearby star cluster, thought to be on average only about 75 light-years away and up to 30 light-years across.
		The cluster is more properly known as the Ursa Major Moving Group.
	antwrp.gsfc.nasa.gov /apod/ap060317.html (170 words)

	ASD Planetarium: StarWatch
		Well-studied clusters of galaxies are found in Ursa Major (Big Dipper), Coma Berenices, and Virgo, all in the east and above the horizon by 10 p.m.
		It’s called the Ursa Major Moving Cluster, and it is a group of approximately 100+ stars which were all born about the same time.
		With the cluster’s center near the faintest star of the Dipper, the main area of the Ursa Major Cluster is currently well-placed for viewing.
	www.astronomy.org /StarWatch/April/index-4-01.html (1520 words)

	Coma Berenice star cluster
		The constellation contains a globular cluster (M53) and of course there is the large group of galaxies near the southern border, a part of the coma-virgo supercluster.
		At a distance of 250 light years, the Coma star cluster is one of the nearest of all the open star clusters.
		Although this beautiful star cluster was not included in the NGC or Messier catalogue, it should be on every (binocular) observing list, together with some other large open clusters like M45, The Hyades, and the Alpha Persei Moving Cluster.
	www.backyard-astro.com /focusonarchive/comaberenice/comaberenice.html (738 words)

	Hyades
		The nearest open cluster to the Sun, except for the Ursa Major Moving Cluster, which appears spread out as individual stars.
		Its age is put at 660 million years old, which, taken together with its motion through space, suggests it has a common origin with the Praesepe cluster.
		Although the bright red giant Aldebaran (Alpha Tauri) lies almost along the same line of sight as the Hyades, it is not a member of the cluster and lies much closer to us (about 60 light-years away).
	www.daviddarling.info /encyclopedia/H/Hyades.html (219 words)

	Observing Naked (or I got 5.5 arcmins resolution).
		Moving east but still in the constellation of Taurus (and that’s no Bull) we come to the Hyades open star cluster which forms the recognizable “V” of the bull’s head/horns.
		Only the Ursa Major moving cluster is closer at 75 light years away.
		The Hyades are moving in the direction of Betelgeuse at 11 arcsecs per year.
	www.umich.edu /~lowbrows/reflections/1999/csarnecki.6.html (1081 words)

	Open Star Clusters
		Over 1100 open clusters are known in our Milky Way Galaxy, and this is probably only a small percentage of the total population which is probably some factor higher; estimates of as many as about 100,000 Milky Way open clusters have been given.
		The first open clusters have been known since prehistoric times: The Pleiades (M45), the Hyades and the Beehive or Praesepe (M44) are the most prominent examples, but Ptolemy had also mentioned M7 and the Coma Star Cluster (Mel 111) as early as 138 AD.
		All the diffuse nebulae in Messier's catalog are associated with open clusters of young stars which have formed of the nebula's material in (astronomically) very recent times, and are still formed today in many cases.
	www.seds.org /messier/open.html (1113 words)

	Spring Sky Tour: Boötes (Site not responding. Last check: 2007-10-26)
		It is called the "Ursa Major Moving Group" and is the closest star cluster to us at 75 light-years away.
		It is moving across the sky faster than any other bright star (except Alpha Centauri which is ten times closer) -- it couldn't be seen 500,000 years ago and 500,000 years from now it won't be visible any more.
		Globular clusters are rare - only about 150 are known, and they are completely different from open clusters like M35 that we saw in Gemini.
	my.execpc.com /60/B3/culp/astronomy/Spring/Bootes.html (633 words)

	The Astronomy Connection - March Messier Tour
		This month we will look for 10 objects, 8 open clusters in the southern milky way and a pair of galaxies, all are within reach of binoculars.
		M44 - Known as the Praesepe or Beehive Cluster, this open cluster is easily visible to the naked eye as a large, fuzzy patch bigger than the moon.
		This pair of galaxies in Ursa Major are very possible to see in binoculars, they look like a pair of fuzzy stars.
	observers.org /observing/m-mar.html (518 words)

	Coma Cluster - Star Clusters - Digital Images of the Sky (Site not responding. Last check: 2007-10-26)
		The Coma star cluster is a scattered group of stars with a diameter of about five degrees in the constellation of Coma Berenices.
		In a distance of about 58 pc it is one of the nearest star clusters known, only the Hyades and the Ursa Major moving cluster appear to be somewhat closer.
		There are 37 members of the cluster down to 10.5 mag.
	www.allthesky.com /clusters/coma.html (137 words)

	EXPLORIT Science Center - Astronomy Club Newsletter
		Ursa Major ("Great Bear"), which contains the group of stars ("asterism") known as the Big Dipper in this country, probably originated from an ancient tale about Jupiter changing Callisto (mother of one of his many children) into a bear and tossing her into the sky so she would escape the anger of Zeus's wife, Juno.
		Ursa Minor, or the Little Dipper, as it is known by us, is the Little Bear, Arcas, the son of Callisto.
		From our vantage point, it appears that the meteors originate from an area of sky near the "Big Dipper" of Ursa Major This event is called the "Ursid Meteor Shower" The shower this year (1998) may be unusually spectacular, due to the recent return of the comet on its 33 year orbit around the sun.
	www.dcn.davis.ca.us /go/EXPLORIT/astronews/astroMay-98.html (993 words)

	Lupus Constellation (Site not responding. Last check: 2007-10-26)
		It's considered that almost all of bright stars included in Lupus are belonged to the "Scorpius-Centaurus moving cluster", and they're traveling toward west all in one body.
		The Lupus cluster is very large (40'), not condensed, and rich, containing about 150 stars from mags.
		The cluster is about 6000 light years away, and is located 3º SW of zeta Lupi.
	www.wingmakers.co.nz /Lupus.html (572 words)

	The Pleiades
		It is not a remainder of the nebula from which the cluster once formed, as can be seen from the fact that the nebula and cluster have different radial velocities, crossing each other with a relative velocity of 6.8 mps, or 11 km/sec.
		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).
		As it is not only one, it is most certain that these stars are original cluster members and not all field stars which have been captured (a procedure which does not work effectively in the rather loose open clusters anyway).
	www.eso.org /outreach/eduoff/edu-prog/catchastar/casreports-2004/rep-237/HTML/site.html (3258 words)

	Introduction (Site not responding. Last check: 2007-10-26)
		Five of the bright stars in Ursa Major lie at a distance of 25 parsecs and form a sparse physical group.
		The top panel is how Usra Major looked 100,000 years ago, the middle panel shows the current pattern and the lower panel shows how Usra Major will look in 100,000 years.
		The two stars not in the Ursa Major moving cluster are the end stars, i.e.
	www.dur.ac.uk /john.lucey/one_lab/pm_intr.html (497 words)

	Summer Sky Tour: Virgo
		In fact that is a star cluster, and together with the three nearby stars that form a right triangle, they are the constellation Coma Berenices, or "Berenices Hair".
		The cluster is a true family of stars that were formed together, and it is "only" 250 light years away.
		This means that only the Ursa Major moving group and the cluster that forms the face of the winter constellation Taurus are closer to us.
	my.execpc.com /60/B3/culp/astronomy/Summer/virgo.html (1125 words)

	Phecda (Site not responding. Last check: 2007-10-26)
		Though it ranks sixth in brightness in the Dipper, indeed in the whole parent constellation, Ursa Major (the Greater Bear), Phecda still received the Gamma designation from Bayer, who simply lettered the Dipper stars from front to back, the brightest (Alkaid) getting Eta.
		The five middle stars of the Dipper are all part of a group, a loose open cluster of stars (the Ursa Major Cluster) whose members are moving through space together.
		They are the collective centerpiece of a much larger structure called the Ursa Major Moving Group that, among many other stars, includes Sirius, and is about 300 million years old.
	www.astro.uiuc.edu /~kaler/sow/phecda.html (524 words)

Try your search on: Qwika (all wikis)