notes
... placed it at the same distance that it currently is from our Sun (T = 5800 K) • We moved it to an M-type star (T = 3000 K) and placed it at the same distance that it currently is from our Sun • In each of these cases, where should we place the Earth to prevent these effects? ...
... placed it at the same distance that it currently is from our Sun (T = 5800 K) • We moved it to an M-type star (T = 3000 K) and placed it at the same distance that it currently is from our Sun • In each of these cases, where should we place the Earth to prevent these effects? ...
Big bang and Stars
... Throughout its life, these two forces determine the stages of a star’s life. ...
... Throughout its life, these two forces determine the stages of a star’s life. ...
Star Properties and Stellar Evolution
... How can stars of different distances be compared? Use their brightness if they were all an equal distance from Earth = 32 ly. Absolute Magnitude ...
... How can stars of different distances be compared? Use their brightness if they were all an equal distance from Earth = 32 ly. Absolute Magnitude ...
The Gas Disk Stellar halo Bulge (= bar) Disk
... Molecular clouds are in the disk and are associated with dust. Optical (lII = +/- 90o) ...
... Molecular clouds are in the disk and are associated with dust. Optical (lII = +/- 90o) ...
Name Date ______ Period _____ Earth Science Chapter 25 Study
... What is the name for the interstellar matter that will eventually form a star? __________________________________________________________________ When is a star said to be born? __________________________________________________________________ What forces are most responsible for the formation of a ...
... What is the name for the interstellar matter that will eventually form a star? __________________________________________________________________ When is a star said to be born? __________________________________________________________________ What forces are most responsible for the formation of a ...
Stars - Weebly
... • Begin their lives as clouds of dust and gas called nebulae • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusio ...
... • Begin their lives as clouds of dust and gas called nebulae • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusio ...
Life Cycle of Stars
... • Begin their lives as clouds of dust and gas called nebulae • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusio ...
... • Begin their lives as clouds of dust and gas called nebulae • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusio ...
Requiem for a Star
... Co → Fe (radioactive decay) Cannot have fusion reactions for elements above Fe ...
... Co → Fe (radioactive decay) Cannot have fusion reactions for elements above Fe ...
Stars
... • Begin their lives as clouds of dust and gas called nebulae • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusio ...
... • Begin their lives as clouds of dust and gas called nebulae • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusio ...
Name: ____________________________ Date: _____________ Per. _________ Stars Study Guide (Ch. 21)
... 14. What is the main sequence?____________________________________________ 15. Why do stars follow two different paths in the Life Cycle of Star? _________________ ___________________________________________________________________ 16. Which type of star lives longer & why? _________________________ ...
... 14. What is the main sequence?____________________________________________ 15. Why do stars follow two different paths in the Life Cycle of Star? _________________ ___________________________________________________________________ 16. Which type of star lives longer & why? _________________________ ...
The Sun, Stars, and Beyond
... and lots of hydrogen. • Our cloud is called The Local Bubble. • These clouds tend to redden the light from stars, much like our air pollution reddens the sunset. ...
... and lots of hydrogen. • Our cloud is called The Local Bubble. • These clouds tend to redden the light from stars, much like our air pollution reddens the sunset. ...
DOC
... theory to explain the formation of the Universe. 10. I can describe the life cycle of a star. 11. I can recall that the formation of elements comes from the life cycle of a star. 12. I can compare how stars evolved based on their mass (examples black hole, neutron star and white dwarf). 13. ...
... theory to explain the formation of the Universe. 10. I can describe the life cycle of a star. 11. I can recall that the formation of elements comes from the life cycle of a star. 12. I can compare how stars evolved based on their mass (examples black hole, neutron star and white dwarf). 13. ...
Simon Goodwin
... Star cluster formation When we observe a star cluster a) did the stars form in a cluster at the density we see it now - or a higher density? b) did the stars form at lower density and assemble into a cluster? ...
... Star cluster formation When we observe a star cluster a) did the stars form in a cluster at the density we see it now - or a higher density? b) did the stars form at lower density and assemble into a cluster? ...
Section 25.2 Stellar Evolution
... Death of Low-Mass Stars Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydrogen fuel and collapse into a white dwarf. Death of Medium-Mass Stars Stars with masses similar to the sun evolve ...
... Death of Low-Mass Stars Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydrogen fuel and collapse into a white dwarf. Death of Medium-Mass Stars Stars with masses similar to the sun evolve ...
THE BIRTH AND DEATH OF A LOW/MEDIUM MASS STAR
... • THE STAGE WHEN A STAR IS IN IT’S “BEST” LIFE CYCLE • OUR SUN IS A MAIN SEQUENCE STAR • MAIN SEQUENCE STARS HAVE MOSTLY HYDROGEN. • THE HYDROGEN EXPLODES, GIVING OFF LIGHT AND HEAT • AS IT EXPLODES, THE HYDROGEN TURNS TO HELIUM. • HELIUM IS LIGHTER THAN HYDROGEN. • OUR SUN IS 4.6 BILLION YEARS OLD. ...
... • THE STAGE WHEN A STAR IS IN IT’S “BEST” LIFE CYCLE • OUR SUN IS A MAIN SEQUENCE STAR • MAIN SEQUENCE STARS HAVE MOSTLY HYDROGEN. • THE HYDROGEN EXPLODES, GIVING OFF LIGHT AND HEAT • AS IT EXPLODES, THE HYDROGEN TURNS TO HELIUM. • HELIUM IS LIGHTER THAN HYDROGEN. • OUR SUN IS 4.6 BILLION YEARS OLD. ...
19Nov_2014
... • Low-mass stars create carbon and oxygen in their cores at the end of their lifespan, thanks to the higher temperatures and pressures present in a red giant star • High-mass stars produce heavier elements like silicon, magnesium, etc., by nuclear fusion in their cores – Temperatures are much higher ...
... • Low-mass stars create carbon and oxygen in their cores at the end of their lifespan, thanks to the higher temperatures and pressures present in a red giant star • High-mass stars produce heavier elements like silicon, magnesium, etc., by nuclear fusion in their cores – Temperatures are much higher ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.