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It is thought to have expelled around 10 solar masses of material, 4,000 to 6,000 years ago, and is now it is believed to measure much less in mass. However, this estimate has since been revised since pistol Star began shedding solar masses of material and has since suffered extreme mass loss. The initial mass of the Pistol Star was thought to be over 100 times as big as our Sun. The mass of the Pistol Star is uncertain. The Pistol Star is an extremely luminous and massive star and the central Star in the Pistol Nebula. It is the hot Wolf-Rayet stars within the Quintuplet Cluster that are responsible for ionizing the Pistol Nebula and creating an interaction with their strong stellar winds. The Pistol Nebula completely surrounds the Pistol Star with its largest shell spanning 4 light years and its outer shell contains gas that which expands at a velocity of 60km/s. Visually, the Pistol Nebula appears as the shape of a rectangle and the material that was ejected forms two shells that are centered on the Pistol Star. The Pistol Nebula contains around 9.3 solar masses of this expelled ionized gas. It is estimated that thousands of years ago the Pistol Star expelled ionized gas and this now forms part of the Pistol Nebula. In terms of distance, the Pistol Star and its surrounding nebula are located around 25,000 light years from Earth in the Quintuplet Cluster (named due to its 5 brightest stars but in fact it contains hundreds more). The Pistol Nebula is in Constellation Sagittarius and surrounds the Pistol Star. Bright Nebulae, Emission Nebulae, Reflection Nebulae, Dark Nebulae and Planetary NebulaeįACT: a ‘reflection nebula’ is an interstellar cloud that should be a dark nebula (a molecular cloud) however its interstellar dust reflects light from a nearby bright star and it reflects the light, hence the name.Nebulae are the spaces in between the stars also referred to as interstellar space. Sometimes they can act as Star nurseries, which are the areas where new Star formation takes place. Some Nebulae are formed when a star explodes and then dies, as is the case with a Supernova. Considered a young massive star it is located within the Pistol Nebula, which is close to the galactic center of our galaxy.Ī Nebula is a massive cloud of gas and dust in Space. It is also known as V4647 sgr, or V4647 Sagittarii. This blue hypergiant star is located around 25,000 light years from Earth (8,000 parsecs), within the Constellation Sagittarius. It is one of the most luminous known stars in the Milky Way.
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The Pistol Star is a blue hypergiant star.
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The Pistol Star– Facts in brief: What is it? –