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Topic: Pistol Star


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In the News (Mon 7 Dec 09)

  
  Pistol Star - Wikipedia, the free encyclopedia
The Pistol Star would be visible to the naked eye as a fourth magnitude star if it were not for interstellar dust clouds hiding it from view; instead, it was discovered by the Hubble Space Telescope in the early 1990s using infrared wavelengths that penetrate the dust.
This star is so massive that its fate cannot be determined for certain, but it is expected that the Pistol Star will die in a brilliant supernova or hypernova in 1 to 3 million years.
The Pistol Star may have created the Pistol Nebula, which it illuminates, by ejecting mass under the pressure of its own light; it is thought to have ejected up to 10 solar masses of material in giant outbursts from its outer layers about 4,000 and 6,000 years ago.
en.wikipedia.org /wiki/Pistol_Star   (368 words)

  
 Pistol Star
Similar to Eta Carinae in brightness, the Pistol Star is one of the most luminous stars in the Local Group of galaxies surrounding the Milky Way (Figer et al, 1995).
The Pistol Star may be radiating enough energy to halt the further infall of gas and dust that had been agglomerating onto the star, thus limiting its maximum mass.
The ejected gas (mostly hydrogen) moves outwards from the star at speeds of 50 to 500 kilometers per second and may be observed as nebulae that are bright in radio wavelengths.
www.solstation.com /x-objects/pistol.htm   (1151 words)

  
 The Pistol Star
If the H model is what the Pistol star really looks like, then it is the winner & champion, the brightest star in the galaxy, anywhere from 10,000,000 to 25,000,000 times brighter than the sun.
The Pistol nebula, featured in figure 1, is almost certainly a creation of the Pistol star and its powerful stellar wind.
It may well be that the Pistol star, like other luminous blue variables (Eta Carinae, for instance) experiences episodic mass loss, so that the mass in the nebula comes from past episodes.
www.tim-thompson.com /pistol-star.html   (1286 words)

  
 Most powerful star discovered   (Site not responding. Last check: 2007-11-01)
Humphreys isn't convinced from the new images that the Pistol Star is a single star.
Researchers estimate the Pistol Star is 25,000 light-years from Earth, near the center of the Milky Way galaxy.
The Pistol Star appears to be scheduled for a short, violent life.
www.dailybruin.ucla.edu /DB/issues/97/10.08/news.star.html   (658 words)

  
 The pistol, the pistol star, and the quintuplet in the galactic centre: results from ISO CVF imaging and SWS ...   (Site not responding. Last check: 2007-11-01)
The location of the Pistol star in the centre of the Pistol Nebula corroborates the suggestion that the two objects are intimately associated, and specifically that the Pistol Nebula is formed from ejecta from the Pistol star.
Dust formed within the ejecta, is heated primarily by the Pistol star, and is responsible for the continuum emission from the Nebula.
The Quintuplet stars may be responsible for some of the dust heating and thus for the gradient in temperatures observed in the Pistol Nebula.
www.iso.vilspa.esa.es /meetings/paris/Paris_abstracts/node124.html   (503 words)

  
 Biggest, Brightest Star Puzzles Astronomers
The star resides in a cluster populated by extremely rare star or unusual stars, including a intensely powerful magnetic neutron star and a massive protostar, one yet to be born.
The shockwave from that supernova then hits a young star just as its forming, compressing gas around it quickly -- over a period of 100,000 years or so -- at forces greater than the star is able to blow off on its own.
Stars like LBV 1806-20, which Eikenberry estimates is only middle-aged at about one million years old, can shed huge amounts of material in a wind similar to solar wind of the Sun.
www.space.com /scienceastronomy/brightest_star_040106-1.html   (837 words)

  
 HubbleSite - Release Text about "Hubble Identifies What May Be the Most Luminous Star Known"
The Pistol Star was first noted in the early 1990s, but its relationship to the nebula was not realized until 1995, when Figer proposed in his Ph.D. thesis that the "past eruptive stages of the star" might have created the nebula.
The astronomers believe that the Pistol nebula was created by eruptions in the outer layers of the star which ejected up to 10 solar masses of material in giant outbursts about 4,000 and 6,000 years ago.
The Pistol Star was so massive when it was born that it brings into question current thinking about how stars are formed, say the UCLA astronomers.
hubblesite.org /newscenter/newsdesk/archive/releases/1997/33/text   (729 words)

  
 Star's so bright, I gotta wear shades
The star, dubbed the "Pistol Star" after the shape of the nebula surrounding it, lies more than 25,000 light-years from the Earth, near the center of the galaxy.
The connection between the Pistol Nebula and the star at its center was first suggested by Figer in his 1995 Ph.D. thesis, in which he proposed that the nebula was created by "past eruptive phases" of the star.
The Pilot Star is so mammoth that its initial mass appears to exceed this theoretical limit, leading astronomers to question their theories and wonder if the same rules apply in the middle of the galaxy.
www.jhu.edu /~newslett/10-16-97/Science/1.html   (634 words)

  
 Star Modelo A
Once Star caught up with the Guardia Civil orders they began offering the pistol on the civilian market as the 'A', these were numbered in a separate serial number range from the 1921.
Sometime between 1928 and 1931 the pistol underwent continued improvements (mostnoticeablyy an arched and checkered backstrap) and redesignated the 1931, the civilian version was notredesignatedd.
This pistol actually has two serial numbers on it, the one on the butt and a different number on the frame and slide that were used by the distributor as the serial number.
www.9mmlargo.com /star_a   (1222 words)

  
 Pistol Star
The Pistol Star lies at the center of the Pistol Nebula, which it created it by expelling up to 10 solar masses of gas in giant outbursts some 4,000 to 6,000 years ago.
Both star and nebula are in the Quintuplet Cluster, close to the center of our galaxy, about 25,000 light-years away; yet despite this immense distance, the Pistol Star would be visible to the naked eye, as a fourth magnitude star, if it were not obscured by dust clouds in the plane of the Milky Way.
Factoring in all the material the Pistol Star has shed in its brief lifetime, this extraordinary object may have started out with a mass of up to 200 solar masses – larger than the maximum stellar mass anticipated by contemporary theories of stellar evolution.
www.daviddarling.info /encyclopedia/P/Pistol_Star.html   (254 words)

  
 ASTRONOMERS: STAR MAY BE BIGGEST, BRIGHTEST YET OBSERVED   (Site not responding. Last check: 2007-11-01)
Whereas the Pistol Star is between 5 million and 6 million times as bright as the sun, however, the new contender, LBV 1806-20, could be as much as 40 million times the sun’s brightness.
Current theories of star formation suggest they should be limited to about 120 solar masses, or 120 times as large as the sun, because the heat and pressure from such big stars’ cores force matter away from their surfaces.
The presence of the infant star, the luminous blue variable and the soft gamma ray repeater are vivid examples of an important emerging fact about stellar evolution: All stars in a single cluster don’t form at the same time, he said.
www.napa.ufl.edu /2004news/bigbrightstar.htm   (1148 words)

  
 Massive Fiery Star, (HE 0437-5439), Speeding 1,500,000 miles per hour...
The fiery massive star, (named HE 0437-5439), was discovered in the framework of the Hamburg/ESO sky survey far out in the halo of the Milky Way, towards the Doradus Constellation (“the Swordfish”).
Such a luminous star should be very bright in the sky, but clouds of tiny dust grains between us and the Galactic Center strongly absorb most of the light being emitted by the star.
The Pistol Star was discovered in the early 1990's and Jesus announced it to the world on June 18, 1991.
www.tldm.org /News8/HotMassiveStarHE-0437-5439.htm   (2213 words)

  
 Star Bonifacio Echeverria, S. A. : Armas : Firearms
The model 1920 was the first pistol Star made more or less in the 'Colt 1911 style.' Although it has the general outline of the Colt and is indeed locked via a Browning-style tipping barrel and link system, there are a large number of other changes.
The pistol retains the rotating trigger and single (right side) transfer bar of the earlier guns and has a side mounted lanyard ring also seemingly identical to that on the 1914.
The 1920 pistol was made in at least four variants, all of which were only made from about 1920 to 1921.
www.star-firearms.com /firearms/guns/1920/index.shtml   (455 words)

  
 Science & Technology at Scientific American.com: Heavenly Heavyweight   (Site not responding. Last check: 2007-11-01)
When the titanic star was formed one to three million years ago, it may have weighed up to 200 times the mass of the sun.
Burning at such a dramatic rate, the Pistol Star is destined for certain death in a brilliant supernova in one to three million years.
Pistol Star is approximately 25,000 light-years from Earth near the center of the Milky Way galaxy.
sciam.com /article.cfm?articleID=000F2C88-D2C4-1CDE-B4A8809EC588EEDF   (470 words)

  
 CNN - Astronomers claim 'most massive' star ever seen - October 7, 1997
The Pistol Star was first observed in the early 1990s by astronomers in South Africa and Japan using Earth-based telescopes with infrared cameras.
Researchers estimate the Pistol Star is 25,000 light-years from Earth, near the center of the Milky Way.
She said she isn't convinced from the new images that the Pistol Star is a single star.
www.cnn.com /TECH/9710/07/pistol.star.ap   (432 words)

  
 APOD: October 8, 1997 - The Brightest Star Yet Known   (Site not responding. Last check: 2007-11-01)
new brightest star is so far away and so obscured by dust, however, that it took the Hubble Space Telescope to confirm it.
In 1990 a star named the Pistol Star was known to lie at the center of the
Pistol Star was so massive it was throwing off the mass that actually created the
antwrp.gsfc.nasa.gov /apod/ap971008.html   (165 words)

  
 Firearm Review, October 2001
The most prolific of the Star pistols, the Models A and B made their initial appearance in the mid 1920's, and set the pattern for all future iterations of the company's single action self loading pistols.
The Star pistols do not use a trigger "stirrup" to trip the sear, rather there is an actuating bar along the left side of the grip frame that trips the sear.
These contracts were filled with pistols bearing proof year code stamps of R and S, indicating that they were proofed in 1947 and 1948 respectively, thus acquiring Curio or Relic status by virtue of the "50 Year Rule." Recently, JLD Enterprises of Farmington, Connecticut, imported a batch of these Star P's.
cruffler.com /review-October-01.html   (2261 words)

  
 What is the biggest star we know?
The largest known star (in terms of mass and brightness) is called the Pistol Star.
In 1990, a star named the Pistol Star was known to lie at the center of the Pistol Nebula in the Milky Way Galaxy.
Despite this great distance, the star would be visible to the naked eye if it were not for all the dust between it and the Earth.
starchild.gsfc.nasa.gov /docs/StarChild/questions/question21.html   (385 words)

  
 Pistol Nebula - Wikipedia, the free encyclopedia
The Pistol Nebula surrounds one of the most massive stars known, the Pistol Star.
The nebula contains approximately 10 solar masses worth of ionized gas that was ejected by the star several thousand years ago.
The nebula was named in the 1980s for its shape as seen in low resolution images that were available at the time.
en.wikipedia.org /wiki/Pistol_Nebula   (118 words)

  
 Skylights: What’s the Biggest Star?   (Site not responding. Last check: 2007-11-01)
They concluded that the most massive star in the Milky Way is the Pistol Star, estimated to be around 200 solar masses.
This star might not be the largest in diameter, but it has more mass than any other normal star we know.
The Pistol Star is about the size of the Earth’s orbit around the Sun—186 million miles in diameter—and releases more energy in six seconds than our Sun does in a year.
www.craigmont.org /bigstar.htm   (430 words)

  
 SPACE.com -- Spacewatch Friday: Extreme Astronomy: Objects at the Limits and Beyond
Truly, a celestial mammoth and 25,000 light years away, the star releases up to 10 million times the power of the Sun and is big enough to fill the diameter of Earth's orbit.
This is also the same region of the sky where the Pistol Star is located, but it is hidden from our view by a cloak of interstellar dust.
The Pistol Star might be only 1 million to 3 million years old, astronomers say, and it will live for only another similar amount of time before exploding in a supernova.
www.space.com /spacewatch/extreme_objects_020913-3.html   (496 words)

  
 ESA - Space Science - Pistol star, one of our Galaxy's brightest stars
One of the intrinsically brightest stars in our Galaxy appears as the bright white dot in the centre of this image.
Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS) took the picture, because the star is hidden at the galactic centre, behind obscuring dust.
NICMOS' infrared vision penetrated the dust to reveal the star, which is glowing with the radiance of 10 million suns.
www.esa.int /export/esaSC/SEM57WZO4HD_index_1.html   (93 words)

  
 Brightest Stars
Any star with a dimmer absolute magnitude is not in the running for brightest star in the Milky Way, and there are quite a few of them.
The true brightness of the Pistol star is unknown, as there are two families of model that fit the star's observed photometry.
And, in the case of the Pistol star and HD93129A, there are two entries for each star, because the observers can't agree with each other.
www.tim-thompson.com /bright-stars.html   (1004 words)

  
 Pixon reconstruction of the Pistol Star   (Site not responding. Last check: 2007-11-01)
The raw image shows the strong spreading of the light around stars due to diffraction from the Hubble Space Telescope.
Rather than being a problem with the telescope (as was suffered before Hubble was repaired), the diffraction spikes around the stars show the high quality of the NICMOS instrument with which the data was taken.
Consequently all the stars are properly brought back to points of light and the structure of the underlying nebula is seen in unprecedented detail.
www.pixon.com /figures/FIG_Pistol_Star.html   (154 words)

  
 Pistol Star   (Site not responding. Last check: 2007-11-01)
Such a luminous star should be very bright in the sky, but tiny dust grains between us and the star absorb most of its light.
The Pistol Star is invisible to the naked eye because it is hidden 25,000 light-years away behind great dust clouds in the center of our Milky Way Galaxy.
Astronomers estimate that the star produces as much energy in six seconds as our Sun does in one year and may be the missing link between normal hot stars and exotic, very large ones.
teacherlink.ed.usu.edu /tlnasa/pictures/litho/pistol   (527 words)

  
 Spaceflight Now | Breaking News | Astronomers say star may be biggest, brightest observed
A University of Florida-led team of astronomers may have discovered the brightest star yet observed in the universe, a fiery behemoth that could be as much as much as seven times brighter than the current record holder.
A star that may be the biggest and brightest in the universe dwarfs the sun in this artist's depiction, drawn to scale to demonstrate the star's massive size.
In a National Science Foundation-funded study presented at the American Astronomical Society national conference in Atlanta, the team says the star is at least as bright as the Pistol Star, the current record holder, so named for the pistol-shaped nebula surrounding it.
spaceflightnow.com /news/n0401/12brighteststar   (1611 words)

  
 Pistol Star
You may have heard that Pistol Star will be moving south for the winter.
Pistol Star's debut album "Crawl" will be released nationaly in the U.S. and Canada on September 6th 2005.
Pistol Star made the top 10 NW band chart at KEXP in December.
www.pistol-star.com   (246 words)

  
 Hubble Space Telescope: News and Updates   (Site not responding. Last check: 2007-11-01)
The Pistol Star was first noted in the early 1990s by astronomers in South Africa and Japan, but its luminosity and relationship to the nebula was not realized until 1995, when Figer proposed in his Ph.D. thesis that the "past eruptive stages of the star" might have created the nebula.
The Pistol Star would be visible to the naked eye as a fourth magnitude star in the sky (which is quite impressive given its distance of 25,000 light-years) if it were not for interstellar dust clouds of tiny particles between the Earth and the center of the Milky Way that absorb the star's light.
However, ten percent of the infrared light leaving the Pistol Star reaches Earth, putting it within reach of infrared telescopes, which have seen rapid technological advances in recent years -- spurred by projects such as NICMOS.
www.thetech.org /exhibits/online/hubble/updates/oct0897.html   (853 words)

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