Space Test: Practice Questions and Answers 1. Who discovered
... Big Bang was empty space, which does not have this limitation because it isn’t matter. 22. What happens when a star runs out of hydrogen for fusion? It begins to fuse helium to form heavier e ...
... Big Bang was empty space, which does not have this limitation because it isn’t matter. 22. What happens when a star runs out of hydrogen for fusion? It begins to fuse helium to form heavier e ...
Week 1B
... Stars seem to be on the inner surface of a sphere surrounding the Earth They aren’t, but can use twodimensional spherical coordinates (similar to latitude and longitude) to locate sky objects ...
... Stars seem to be on the inner surface of a sphere surrounding the Earth They aren’t, but can use twodimensional spherical coordinates (similar to latitude and longitude) to locate sky objects ...
SES4U Life Cycle of a Star
... Expands into a red supergiant, Contracts and supernovas Nebular material is contracted back to the center of the star creating a black hole. Supernova / Hypernova?!?!!!! May become a large neutron star, then upon a secondary supernova become a black hole ...
... Expands into a red supergiant, Contracts and supernovas Nebular material is contracted back to the center of the star creating a black hole. Supernova / Hypernova?!?!!!! May become a large neutron star, then upon a secondary supernova become a black hole ...
Star and Sun Properties
... • As stars age and pass through different stages, their positions on the H-R diagram change. ...
... • As stars age and pass through different stages, their positions on the H-R diagram change. ...
a star is born reading
... seen. They burn their fuel very slowly and are not as bright as others in the sky. They are like flashlights in a dark auditorium. When a big spotlight comes on, the flashlights can't be seen. But because they burn more slowly, red dwarfs will live a long time, maybe trillions of years! Our Sun is a ...
... seen. They burn their fuel very slowly and are not as bright as others in the sky. They are like flashlights in a dark auditorium. When a big spotlight comes on, the flashlights can't be seen. But because they burn more slowly, red dwarfs will live a long time, maybe trillions of years! Our Sun is a ...
Distant Stars Lesson Plan
... 1. Take a simple quiz. Print and distribute the quiz on page 4. Here are the answers: What is the one factor that determines a star’s color? Answer: b) Its temperature On the H-R Diagram, most stars fall on the diagonal line from the upper left hot blue stars to the lower right cool red stars. W ...
... 1. Take a simple quiz. Print and distribute the quiz on page 4. Here are the answers: What is the one factor that determines a star’s color? Answer: b) Its temperature On the H-R Diagram, most stars fall on the diagonal line from the upper left hot blue stars to the lower right cool red stars. W ...
TYPES OF STARS
... Originally, astronomers classified those stars with the strongest hydrogen lines as 'A' stars, stars with the next strongest lines as 'B' stars, the next strongest 'C' and so on. Eventually, they realized that some letters were unnecessary, and dropped them from the ...
... Originally, astronomers classified those stars with the strongest hydrogen lines as 'A' stars, stars with the next strongest lines as 'B' stars, the next strongest 'C' and so on. Eventually, they realized that some letters were unnecessary, and dropped them from the ...
Constellations Test Review
... 9. If Peter is sailing at night out at sea and measures that Polaris is 5 fists above the horizon, what is Peter’s latitude? ...
... 9. If Peter is sailing at night out at sea and measures that Polaris is 5 fists above the horizon, what is Peter’s latitude? ...
Stars and Galaxies
... 24. Astronomers use spectrographs to study the ___________________ of stars to identify properties of stars. 25. Spectrographs break ______________________ into its component colors. 26. Dark lines are in the spectrum of a star. 27. The dark lines are caused by _____________________ in the star’s at ...
... 24. Astronomers use spectrographs to study the ___________________ of stars to identify properties of stars. 25. Spectrographs break ______________________ into its component colors. 26. Dark lines are in the spectrum of a star. 27. The dark lines are caused by _____________________ in the star’s at ...
REVIEW: STAR`S TEST
... How much brighter is the sun than Jupiter ? ___________________________ Can a 15 cm telescope see an object with an apparent magnitude of 18.5 ? ______________________________ ...
... How much brighter is the sun than Jupiter ? ___________________________ Can a 15 cm telescope see an object with an apparent magnitude of 18.5 ? ______________________________ ...
File - greenscapes4you
... bright. Giants are somewhat smaller in radius and lower in luminosity, but still much brighter than main sequence stars of same spectral type. The hot, white, small radius stars near the lower left are called white dwarfs. Giants and Supergiants are stars nearing the ends of their lives because they ...
... bright. Giants are somewhat smaller in radius and lower in luminosity, but still much brighter than main sequence stars of same spectral type. The hot, white, small radius stars near the lower left are called white dwarfs. Giants and Supergiants are stars nearing the ends of their lives because they ...
AST 207 Homework 5 Due 14 October 2011
... –2.5 log(fA/ fB). (not graded) How much brighter is Deneb than the sun if both are placed at the same distance? (2 pts.) What quantity makes this comparison in the most direct manner? Explain. b. The temperature of the sun is 5700K, and the temperature of Deneb is 9800K. (1 pt.) How much larger is D ...
... –2.5 log(fA/ fB). (not graded) How much brighter is Deneb than the sun if both are placed at the same distance? (2 pts.) What quantity makes this comparison in the most direct manner? Explain. b. The temperature of the sun is 5700K, and the temperature of Deneb is 9800K. (1 pt.) How much larger is D ...
PowerPoint File
... Measure the distance over which the density of stars significantly falls off with height above, or distance below, the galactic plane. The distance depends on the type of objects considered, but is roughly 100 – 200 parsecs. The galactic plane is much thinner than it is wide. ...
... Measure the distance over which the density of stars significantly falls off with height above, or distance below, the galactic plane. The distance depends on the type of objects considered, but is roughly 100 – 200 parsecs. The galactic plane is much thinner than it is wide. ...
Properties of Stars in general
... the intensity of different lines varies with spectral type (and hence with temperature). ...
... the intensity of different lines varies with spectral type (and hence with temperature). ...
red giant - Teacher Pages
... a. They produce their own light b. They radiate (give off) these types of energy: heat, electromagnetic and light ...
... a. They produce their own light b. They radiate (give off) these types of energy: heat, electromagnetic and light ...
Slide 1
... nebula. • Once the nebula stops, only the core of the red giant remains. • Stars will usually end their lives in this state. ...
... nebula. • Once the nebula stops, only the core of the red giant remains. • Stars will usually end their lives in this state. ...
Slide 1
... A star is a gravitationally bound, luminous ball of plasma. Stars are composed of hydrogen and helium with small amounts of other composite metals (Z > 2). A star’s luminosity is due to the outward migration of photons of electromagnetic energy derived from thermonuclear fusion processes within the ...
... A star is a gravitationally bound, luminous ball of plasma. Stars are composed of hydrogen and helium with small amounts of other composite metals (Z > 2). A star’s luminosity is due to the outward migration of photons of electromagnetic energy derived from thermonuclear fusion processes within the ...
How do stars form as a function of stellar mass
... likely companions. With medium resolution (R~5500) GNIRS and NIFS data we estimate effective temperatures, surface gravities and veiling from the relative and absolute depths of photospheric lines. High resolution (R~18,000) spectra of a few late-type stars better constrain temperature, gravity and ...
... likely companions. With medium resolution (R~5500) GNIRS and NIFS data we estimate effective temperatures, surface gravities and veiling from the relative and absolute depths of photospheric lines. High resolution (R~18,000) spectra of a few late-type stars better constrain temperature, gravity and ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.