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Topic: Large Magellanic Cloud

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  Large Magellanic Cloud - Wikipedia, the free encyclopedia
It is visible as a faint object in the night sky of the southern hemisphere, straddling the border between the constellations of Dorado and Mensa.
It is named after Ferdinand Magellan, who observed it and the companion Small Magellanic Cloud (SMC) in his circumnavigational voyage around the Earth.
The LMC is full of a wide range of galactic objects and phenomena that make it aptly known as an "astronomical treasure-house, a great celestial laboratory for the study of the growth and evolution of the stars," as described by Robert Burnham, Jr.
en.wikipedia.org /wiki/Large_Magellanic_Cloud   (631 words)

 Magellanic Clouds - Wikipedia, the free encyclopedia
The Large Magellanic Cloud and its neighbour and relative, the Small Magellanic Cloud, are conspicuous objects in the southern hemisphere, looking like separated pieces of the Milky Way to the naked eye.
Observation, and theoretical evidence suggests that the LMC and SMC have been greatly distorted by tidal interaction with the Milky Way as they orbit around it; streams of neutral hydrogen connect them to the Milky Way and to each other, and both resemble disrupted barred spiral galaxies.
The Large Magellanic Cloud was host galaxy to a Supernova (SN 1987A), the brightest observed in over three centuries.
en.wikipedia.org /wiki/Magellanic_Clouds   (366 words)

 Large Magellanic Cloud
One of the two Magellanic Clouds – dwarf irregular galaxies –; visible in the southern hemisphere, that orbit the Milky Way Galaxy; it spans 8° of the sky in Dorado and Mensa.
The LMC is about 20,000 light-years in diameter, has a visible mass of about one-tenth that of our own galaxy, and, at a distance of some 180,000 light-years, was long considered to be the nearest external galaxy before losing that distinction to the Sagittarius Dwarf Elliptical.
The LMC is rich in a variety of diffuse nebulae, including the spectacular Tarantula Nebula, planetary nebulae, open clusters, globular clusters, and so-called blue populous clusters, which resemble compact, young globulars and are of a type unseen in our own galaxy.
www.daviddarling.info /encyclopedia/L/LMC.html   (263 words)

 Magellanic Clouds
In a huge river of primordial hydrogen flowing from the neighboring Magellanic Clouds into our own Milky Way galaxy, astronomers have discovered the first evidence of turbulence and concluded that the invisible, hot mass of gas surrounding our galaxy is much thicker than physicists previously thought.
The Large Magellanic Cloud and the Small Magellanic Cloud are the Milky Way galaxy's closest galactic neighbors.
The Small Magellanic Cloud is at second magnitude, which is dim but bright enough to see in a dark sky.
www.news.cornell.edu /Chronicle/02/1.17.02/MagellanicClouds.html   (459 words)

 The dynamical evolution of the Large Magellanic Cloud
The Large Magellanic Cloud (LMC) and its apparent neighbour, the Small Magellanic Cloud (SMC), are dwarf irregular galaxies on the southern hemisphere.
Figure 2 shows the HI column density distribution of the Magellanic Clouds and their environment and a mean velocity map obtained from Brüns et al.
The current position of the Magellanic Clouds is well determined: the position on the sky is easily observable and the distance was derived in numerous studies.
www.astro.uni-bonn.de /~rcbruens/simulationen/lmc/research.html   (2597 words)

 The Large Magellanic Cloud, LMC   (Site not responding. Last check: 2007-11-07)
Small Magellanic Cloud, are conspicuous objects in the southern hemisphere, looking like separated pieces of the Milky Way for the naked eye.
The Large Magellanic Cloud, at its distance of 179,000 light years, was longly considered the nearest external galaxy, until in 1994, the
On February 24, 1987, supernova 1987A occurred in the Large Magellanic Cloud, which was the nearest observed supernova since Keplers, which occured before the invention of the telescope.
www.eso.org /outreach/eduoff/edu-prog/catchastar/CAS2002/cas-projects/france_magclouds_1   (736 words)

 Multiwavelength Large Magellanic Cloud - Irregular Galaxy
Both of these galaxies are named in honor of the explorer Ferdinand Magellan, who noted their presence in becoming the first to sail around the world nearly 500 years ago.
While considered dwarf galaxies, their close proximity means that the Magellanic Clouds subtend a large angle on the sky.
The Magellanic Clouds and the Milky Way are members of the Local Group, a collection of about 30 galaxies loosely bound by their mutual gravitation.
coolcosmos.ipac.caltech.edu /cosmic_classroom/multiwavelength_astronomy/multiwavelength_museum/lmc.html   (899 words)

 Distance to the Large Magellanic Cloud
The luminosity, the mass-metallicity dependence for RR Lyrae variables, and the luminosity of the clump stars in the bar of the LMC and their role in measuring distances are being investigated, in collaboration with Carretta and Gratton (Padova Obs.), and Marconi (Napoli Obs.).
The global pulsational properties of the sample as well as a very accurate estimate of the average apparent luminosity of the LMC RR Lyrae's and of the clump stars, have been obtained from the photometric data.
An independent estimate of the LMC reddening was obtained from the colors of the edges of the instability strip defined by the RR Lyrae in our sample.
www.bo.astro.it /report01/node22.html   (329 words)

 The Large Magellanic Cloud   (Site not responding. Last check: 2007-11-07)
The Large Magellanic Cloud is an irregular dwarf galaxy that is gravitationally bound as a satellite to our Milky Way Galaxy.
The Large Magellanic Cloud, or LMC, is part of the Local Group that includes the Andromeda Galaxy, M33, M110, M32, and the Small Magellanic Cloud.
The LMC was discovered by Portuguese seamen who sailed into the southern hemisphere in the 15th century, and was named in honor of Ferdinand Magellan.
members.cox.net /sidleach/LMC.htm   (256 words)

 The Large Magellanic Cloud, LMC
Irregular Galaxy LMC, the Large Magellanic Cloud in Dorado
The Large Magellanic Cloud, together with its apparent neighbor and relative, the Small Magellanic Cloud, are conspicuous objects in the southern hemisphere, looking like separated pieces of the Milky Way for the naked eye.
The Large Magellanic Cloud, at its distance of 179,000 light years, was longly considered the nearest external galaxy, until in 1994, the Sagittarius Dwarf Elliptical Galaxy was discovered at only about 80,000 light years.
www.seds.org /messier/xtra/ngc/lmc.html   (393 words)

 Vogelstrausskluft | Large Magellanic Cloud
The galaxy, like its sister the Small Magellanic Cloud, is named after the discoverer Ferdinad Magellan (1480-1521) who first mentioned the two objects in his logbook during his circumnavigation of the world.
The Large Magellanic Cloud has a diameter of approximately 30 000 light-years and consists of about 10 billion stars, which is less than a tenth of our Milky Way.
Due to its close distance, the Large Magellanic Cloud is of great importance for astronomy and astrophysics.
www.vogelstrausskluft.com /sterne/sterne_gmw_e.php   (244 words)

 Beyond Our Galaxy
In the early 1980's still another was discovered, dubbed the Mini Magellanic Cloud (MMC), hiding behind the SMC, 20,000 light-years beyond, and appears to have been a part of the SMC until it was torn loose by a near collision with the LMC some 200 million years ago.
The core of NGC 7742 is the large yellow "yolk" in the center of the image.
Each cloud fluoresces because of the strong ultraviolet light emitted from the embedded young stars, which have formed within them due to gravitational collapse of the gas.
www.cosmiclight.com /imagegalleries/beyond.htm   (4347 words)

 ScienceDaily: Scientists Determine Large Magellanic Cloud Galaxy Formed Similar To Milky Way   (Site not responding. Last check: 2007-11-07)
The large-velocity dispersion of the LMC RR Lyrae stars scales to the Milky Way RR Lyrae star's velocity dispersion and indicates that metal-poor old stars in the LMC are distributed in a halo population.
Magellanic Cloud: Knots Of Evaporating Gas In Supernova Remnant Support Theory (February 8, 1999) -- The expanding shock wave of a supernova remnant in the Large Magellanic Cloud has provided strong evidence to support a popular model of the interstellar medium, says a University of Illinois...
Magellanic Clouds -- The two Magellanic Clouds are irregular dwarf galaxies orbiting our Milky Way galaxy, and thus are members of our Local Group of...
www.sciencedaily.com /releases/2003/09/030912072036.htm   (1768 words)

 The Large Magellanic Cloud   (Site not responding. Last check: 2007-11-07)
The Large Magellanic Cloud (LMC) is the nearest galaxy to the Milky Way but less than one tenth as massive; even so it contains the equivalent of over ten billion solar masses of material in the form of stars, gas and dust.
The LMC is at a distance of 160,000 light years and is visible to the unaided eye from southern latitudes, rather like a detached piece of the Milky Way.
The nearness of the LMC ensures that it is well resolved into stars in quite a modest telescope, and deep photographs reveal it to be a highly complex system with large numbers of clusters, nebulae and dust clouds scattered apparently at random across the face of the galaxy.
www.aao.gov.au /images/captions/uks014.html   (233 words)

 IAU Symposium 190: Abstracts   (Site not responding. Last check: 2007-11-07)
SMC 1 is a planetary nebula in the Large Magellanic Cloud!
The sizes of clouds are estimated by measuring the deviation of CO emission strength from that predicted by a planar cloud model of a given size.
The correlation between the clouds and HII regions is basically good in the observed area, i.e., HII regions are associated around the peak intensity positions of 5 of the 8 clouds and associated with 2 of the 6 clouds marginally detected.
cadcwww.dao.nrc.ca /iau190/poster.html   (18550 words)

 Probing the chemistry of red giants stars in the Large Magellanic Cloud with PHOENIX on Gemini South
The Large Magellanic Cloud, a small satellite galaxy at a distance of about 50,000 parsecs, is a prime target in which to probe the chemical evolution of stars.
However, because the red giants within the LMC are faint due to their greater distance, detailed infrared spectroscopy of them has only become possible with the advent of large 8-10 m telescopes like Gemini equipped with high resolution spectrographs.
The atmospheres of the LMC red giants observed at Gemini all show evidence of the mixing of CN-cycle elements produced in their cores.
www.gemini.edu /science/redgiants.html   (892 words)

 North of the Large Magellanic Cloud   (Site not responding. Last check: 2007-11-07)
Within each cloud of fluorescent hydrogen is a cluster of hot stars and in some cases these stars have begun to blow the surrounding gas away, occasionally producing vast bubbles and shells of nebulosity.
When this process is almost complete, as it is in the upper part of the picture, clouds of distinctly blue, very bright stars remain, some in the form of the very compact clusters which are so typical of star formation in the LMC and so unusual in the Milky Way.
The Large Magellanic Cloud (LMC), is the closest galaxy to the Milky Way, about 160,000 light years distant.
www.aao.gov.au /images/captions/uks016.html   (193 words)

 Zoom Astronomy Glossary: L
This happens because at those five points, the gravitational force of the large objects is exactly equal to the centripetal force required to rotate with the objects.
The Large Magellanic Cloud (LMC) is an irregular-shaped galaxy in the Local Group.
The Large Magellanic Cloud (LMC) is near the constellation Dorado, and is 163,000 light-years away.
www.enchantedlearning.com /subjects/astronomy/glossary/indexl.shtml   (2571 words)

 APOD: September 18, 1995 - The Large Cloud of Magellan   (Site not responding. Last check: 2007-11-07)
Magellan and his crew had plenty of time to study the southern sky during their famous voyage around the world.
As a result, two fuzzy cloud like objects, nestled among the southern constellations of Doradus and Tucana are now known as the Clouds of Magellan.
An unusual effect called gravitational lensing has recently been detected in a few LMC stars, and there is hope this could tell us important information about the true composition of our universe.
antwrp.gsfc.nasa.gov /apod/ap950918.html   (187 words)

 Steve Gottlieb; Costa Rica - The Large Magellanic Cloud
To further exasperate the situation, the LMC was already right on the meridian after the end of astronomical twilight and with each subsequent minute would be sinking lower to the southwest.
Below are notes on 63 LMC objects which I took notes on from Costa Rica with a 13.1-inch f/4.4 travel-dob and with an 18-inch f/4.5 NGT (fork-mount) from rural New South Wales in Australia.
This is one of the oldest LMC globular located at the north-east periphery of the cloud, and is comparable in age to galactic globulars, ~10 billion years old.
observers.org /reports/2004.02.17.html   (3814 words)

 2MASS Atlas Image Gallery
Atlas Image mosaic of our dwarf irregular satellite neighbor, the Large Magellanic Cloud (LMC; the mosaic has been binned from 1´´ pixels to 5´´ pixels.) The LMC is at a distance from us of 50 kpc (or 163,000 light years).
In particular, 2MASS is sensitive to the large quantity of dust-obscured red AGB stars and carbon stars, which are spatially distributed throughout the galaxy.
This apparent asymmetry is a geometric effect, as the dust lanes lie along the leading edge of the bar and along the trailing edge of the spiral arms; at the point of galactic corotation, where the arms join the bar, the dust lanes switch sides.
www.ipac.caltech.edu /2mass/gallery/images_galaxies.html   (5729 words)

 Chandra peers into the Large Magellanic Cloud
Its first target was LMC X-1, a point-like source of X-rays in the Large Magellanic Cloud (LMC).
After checking the focus with LMC X-1 the camera was then turned toward N132D, a remnant of an exploded star also located in the Large Magellanic Cloud.
The N132D supernova remnant appears to be colliding with a giant molecular cloud, which produces the brightening on the southern rim of the remnant.
science.nasa.gov /newhome/headlines/ast13sep99_2.htm   (733 words)

 Large Magellanic Cloud Star Field
Together with the Small Magellanic Cloud, the LMC is visible to the naked eye as a faint, diffuse smudge of light from dark locations in the Southern Hemisphere.
Although it is usually classified as an irregular galaxy, the LMC is sometimes thought to be a barred spiral galaxy.
Both the Large and Small Magellanic Clouds are named after the Portuguese navigator Ferdinand Magellan (1480?–1521), who first circumnavigated the globe in 1521.
www.astrographics.com /cgi-bin/affiliates/clickthru.cgi/getscience/www.astrographics.com/GalleryPrintsIndex/GP0010.html   (227 words)

 Large Magellanic Cloud Microlensing
This is unlikely because the spatial distribution of the events is not clustered toward the LMC bar and because this model predicts only one event in the 2 yr data of Alcock et al.
The distance distribution of the 20 foreground RR Lyrae stars in the direction of the LMC is shown in Figure 3.
The distance distribution of the Sgr RRab, equivalent to about 0.5% of all the MACHO RRab found in the LMC, is overplotted in Figure 3 (we have actually used the reddening independent magnitudes to compute their individual distances because of the heavy differential reddening of the bulge fields).
ecf.hq.eso.org /~ralbrech/novdec97apjl/975552.html   (3422 words)

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