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#1
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Free Stars?
Is there such a thing as stars that are not gravitationally connected to any
galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. If they exist is there a name for them? With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? -- Rusty Shackleford 'What ever happens, happens necessarily' Remove NOSPAM from E-mail address to reply. |
#2
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"Rusty Shackleford" wrote in
m: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. Yes. They are thought to be fairly common. This can occur when two galaxies interact, some stars can be ejected completely from the system. If they exist is there a name for them? Dunno. How about "extragalactic stars". With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? You can't get away from gravity at all. e,g alpha centauri is influenced by the sun's gravity but the two are not bound to each other. Llanzlan. |
#3
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"Rusty Shackleford" wrote in
m: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. Yes. They are thought to be fairly common. This can occur when two galaxies interact, some stars can be ejected completely from the system. If they exist is there a name for them? Dunno. How about "extragalactic stars". With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? You can't get away from gravity at all. e,g alpha centauri is influenced by the sun's gravity but the two are not bound to each other. Llanzlan. |
#4
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"Rusty Shackleford" wrote in
alt.astronomy: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. If they exist is there a name for them? With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? It's hihgly unlikely that such stars were formed in intergalactic space - "outside galaxies"- but it is thought to be quite common to find stars outside galaxies that have been swept away, mostly after collisions of two galaxies with each other, hurling it away. Runaway stars? Extragalactic stars? Even the biggest structures in the universe are formed and dominated by gravity. A weird force, which leaves nothing nowhere unaffected. -- CeeBee Uxbridge: "By God, sir, I've lost my leg!" Wellington: "By God, sir, so you have!" Google CeeBee @ www.geocities.com/ceebee_2 |
#5
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"Rusty Shackleford" wrote in
alt.astronomy: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. If they exist is there a name for them? With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? It's hihgly unlikely that such stars were formed in intergalactic space - "outside galaxies"- but it is thought to be quite common to find stars outside galaxies that have been swept away, mostly after collisions of two galaxies with each other, hurling it away. Runaway stars? Extragalactic stars? Even the biggest structures in the universe are formed and dominated by gravity. A weird force, which leaves nothing nowhere unaffected. -- CeeBee Uxbridge: "By God, sir, I've lost my leg!" Wellington: "By God, sir, so you have!" Google CeeBee @ www.geocities.com/ceebee_2 |
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#7
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#8
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On 26 Sep 2003 00:05:44 GMT, CeeBee wrote:
"Rusty Shackleford" wrote in alt.astronomy: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. Definitively, stars are ejected of galaxies and of globular clusters because of close encounters with nearby stars. Simulation of globular clusters over millions of years shows clearly that they are "boiling away" stars by stars; but the rate is quite slow. If they exist is there a name for them? With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? No, it is not. Don't think about it. The gravity of your own body DOES influence all quasars at the end of the universe... It's hihgly unlikely that such stars were formed in intergalactic space - "outside galaxies"- but it is thought to be quite common to find stars outside galaxies that have been swept away, mostly after collisions of two galaxies with each other, hurling it away. Runaway stars? Extragalactic stars? Runaway stars? Burnham's Celestial Handbook refers to AE Aurigæ, 53 Arietis and Mu Columbæ as the Runaway Stars, apparently escaping away at high velocity from the Great Nebulæ M42 in Orion. The process of expulsion is not clear yet. Even the biggest structures in the universe are formed and dominated by gravity. A weird force, which leaves nothing nowhere unaffected. Good night! Benoît Morrissette |
#9
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On 26 Sep 2003 00:05:44 GMT, CeeBee wrote:
"Rusty Shackleford" wrote in alt.astronomy: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. Definitively, stars are ejected of galaxies and of globular clusters because of close encounters with nearby stars. Simulation of globular clusters over millions of years shows clearly that they are "boiling away" stars by stars; but the rate is quite slow. If they exist is there a name for them? With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? No, it is not. Don't think about it. The gravity of your own body DOES influence all quasars at the end of the universe... It's hihgly unlikely that such stars were formed in intergalactic space - "outside galaxies"- but it is thought to be quite common to find stars outside galaxies that have been swept away, mostly after collisions of two galaxies with each other, hurling it away. Runaway stars? Extragalactic stars? Runaway stars? Burnham's Celestial Handbook refers to AE Aurigæ, 53 Arietis and Mu Columbæ as the Runaway Stars, apparently escaping away at high velocity from the Great Nebulæ M42 in Orion. The process of expulsion is not clear yet. Even the biggest structures in the universe are formed and dominated by gravity. A weird force, which leaves nothing nowhere unaffected. Good night! Benoît Morrissette |
#10
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"CeeBee" wrote in message . 6.84... "Rusty Shackleford" wrote in alt.astronomy: Is there such a thing as stars that are not gravitationally connected to any galaxy but are roaming free until they fall under the influence of a nearby galaxy in its path? I'm thinking of a star that is thrown free of a galaxy maybe. If they exist is there a name for them? With all the galaxies in the universe is it even possible to not be influenced by their gravity at any point in space? It's hihgly unlikely that such stars were formed in intergalactic space - "outside galaxies"- but it is thought to be quite common to find stars outside galaxies that have been swept away, mostly after collisions of two galaxies with each other, hurling it away. Runaway stars? Extragalactic stars? Even the biggest structures in the universe are formed and dominated by gravity. A weird force, which leaves nothing nowhere unaffected. What about 'free planets'? I recall reading somewhere that these are possible? Any thoughts? |
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