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You are watching: Which is used observationally to determine the age of a star cluster?


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In the evolution of substantial stars, what is the significance of the temperature 600 million K? at which stage in a sun-like star"s life is its core the the very least dense? will the Sun ever before turn right into a brown dwarf? Why or why not? (SA) In general, together stars go through the last stage of post-main sequence development they will shed mass in the process of settling down into their final state. Explain the mass-loss process and the final state the the star for a short mass star. (SA) contrasted to our Sun, a usual white dwarf has actually Isolated main-sequence stars as enormous as 10 come 12 time the mass of the sun might still regulate to protect against going supernova. Why? refer to the number above. At what numbered allude on the graph over does the helium flash occur? What is a planetary nebula? Mass deliver in binaries occurs as soon as one huge swells to with the refer to the figure above. What is the name of the path in between the points labeling 13 and 14? How have Hubble pictures revised our check out of the structure of planetary nebulae, and also even the potential because that the sun to become one? (SA) The brightest stars in a young open up cluster will be note the turnoff massive in a star cluster permits you to identify its What inevitably pressures a star choose the sunlight to evolve far from gift a main sequence star? The stimulate of evolutionary stages of a star like the sun would be main Sequence, giant, planetary nebula, and finally: What is the unusual result of mass transfer in the Algol binary system? You watch a low-mass helium white dwarf. What have the right to you conclude? the brighter Sirius A weighs 3 solar masses, yet the white dwarf Sirius B is only around one solar mass implies: In globular clusters, the brightest stars will be basically all the carbon-rich dust in the airplane of the galaxy originated in What spectral form of star that is still approximately formed most recently? said hydrostatic equilibrium come the star"s mass, composition, and evolution off the main sequence. (SA) i m sorry is used observationally to recognize the age of a star cluster? which stars in globular swarm are thought to be examples of mergers? A star is on the horizontal branch that the H-R diagram. Which statement is true? What spectral type of star the is still around formed longest ago? which of the following best describes the evolutionary track complied with on the H-R diagram because that the most massive stars? just as a low-mass main sequence star runs the end of fuel in the core, it actually becomes brighter. How is this possible? The Roche lobe that a star in a binary star system The many famous case of a an ext massive hot star orbiting with a much more evolved yet presently less massive red gigantic is the eclipsing binary What is a usual age because that a globular cluster? What properties of a star cluster is offered to determine its age? A high-mass star dies more violently than a low-mass star because: during the hydrogen covering burning phase The brightest stars in aging globular clusters will certainly be What temperature is required to fuse helium into carbon? which of the following elements contained in your body is NOT developed in the cores of stars throughout thermonuclear fusion? i beg your pardon of the following is true about planetary nebulae? The "helium flash" occurs at what stage in stellar evolution? What is the common age because that a globular cluster linked with ours Milky Way? together a 4-10 solar mass star leaves the main sequence on its method to becoming a red supergiant, that luminosity refer to the figure above. What is the surname of the path between the points labeling 10 and 11? A solar massive star will certainly evolve off the key sequence when When a star"s inward gravity and outward push are balanced, the star is said to be describe the number above. What is the surname of the path in between the points labeled 8 and 9? In a fairly young star cluster, if the most substantial stars space swelling up into giants, the least enormous stars are refer to the number above. What is the surname of the path in between the points labeled 11 and also 12? refer to the number above. What is the name of the star labeled 10?a red giant branchb Mc The main point contracts, increasing the temperature and also increasing the dimension of the region of hydrogen shell-burning.d red supergiants favor Betelguese and also Antares.e the main sequence turnofff Roche Lobe.g for a short mass star, the hydrogen fuel is exhausted and the star starts to fuse helium. When this wake up the star expands into a red giant. At some point the helium is exhausted and also the outer layers that the star are ejected as a planetary nebula, leaving a tiny, hot white dwarf behind.h Helium builds up in the core, while the hydrogen burning shell expands.i red giantj it is the temperature essential for carbon fusing right into heavier elements.k horizontally rightl No, the is enormous enough to ignite hydrogen combination and reach the main sequence, i m sorry brown dwarfs cannot. Just objects of less than 8% of the Sun"s mass are brown dwarfs.m due to the fact that they can likewise have solid stellar windsn is, in terms of the star"s gravity, its "zone that influence."o instead of simply spherical shells, we understand that many if not most planetary nebulae space bipolar ejections; regularly the illustration of a "ring" originates from the dual lobes coming directly at us and also away from us. The intricate structure says that magnetic fields are molding the nebulae, and also that perhaps the rotation and also perturbation the a companion star may be frequently involved. It may be that only binary stars can create these spectacular mainly shrouds.p about the same mass and also a million times higher density.q main Sequencer still evolving towards their ZAMS positionss the is burn both hydrogen and also helium.t ageu the ejected envelope, often bipolar, that a red huge surrounding a stellar core remnantv Hydrostatic equilibrium way that the inward pressure of gravity, a product the the star"s mass, is exactly well balanced by the outward radiation push of its thermonuclear reactions; as lengthy as the hydrogen supply is abundant, this balance have the right to be maintained, and also the star is stable on the main sequence. When the main point helium contents grows, and the hydrogen burning covering expands, this extra radiation in the interim overwhelms gravity, and the star starts swelling right into its giant stage the evolution.w it builds up a core of inert helium.x Some are spherical, but most have actually bipolar structure.y it generates much more heat and also its core eventually collapses really suddenly.z the luminosity the the key sequence turn-off pointaa remains about constant.ab that the collapsed companion moved mass come Sirius white asymptotic huge branchaf planetary nebulaag blue stragglersah low-mass Oaj white dwarfak 10-12 exchange rate yearsal that is component of a binary star red 12 billion yearsao the star grows much more luminous.ap hydrogenaq a helium white dwarfar 100 million Kas 9at horizontal branchau in hydrostatic equilibrium.av enormous blue stars in ~ the optimal left ~ above the H-R diagram.