Phys 100 – Astronomy (Dr. Ilias Fernini) Review Questions for
... a. operates at a slightly lower temperature than the proton-proton chain. b. is most efficient in a star less massive than the sun. c. occurs when carbon and oxygen combine to form nitrogen, which produces energy. d. produces the energy responsible for bipolar flows. * e. combines four hydrogen nucl ...
... a. operates at a slightly lower temperature than the proton-proton chain. b. is most efficient in a star less massive than the sun. c. occurs when carbon and oxygen combine to form nitrogen, which produces energy. d. produces the energy responsible for bipolar flows. * e. combines four hydrogen nucl ...
Study Guide
... • Stars on the lower left of the H-R Diagram fainter than Main Sequence stars of the same Temperature. – Means they must be smaller in radius. – L-R-T Relation predicts: R ~ 0.01 Rsun (~ size of Earth!) ...
... • Stars on the lower left of the H-R Diagram fainter than Main Sequence stars of the same Temperature. – Means they must be smaller in radius. – L-R-T Relation predicts: R ~ 0.01 Rsun (~ size of Earth!) ...
Exam 3 Study Guide
... See if you can fill in the blank on these questions (our exam will still be multiple choice) The Milky Way is a barred spiral type galaxy. The Solar System is located in the Orion spur. The Sun is located 28,000 light-years, or 8500 pc, away from the center of the Milky Way. The mass of the Milky Wa ...
... See if you can fill in the blank on these questions (our exam will still be multiple choice) The Milky Way is a barred spiral type galaxy. The Solar System is located in the Orion spur. The Sun is located 28,000 light-years, or 8500 pc, away from the center of the Milky Way. The mass of the Milky Wa ...
S T A R S
... Alpha Centauri is the closest binary to our sun and Proxima Centauri orbits this binary. Omega Centauri (NGC 5139) is globular cluster. The two pointers Apha & Beta Centauri point to Crux. (NGC is the abbreviation for New General Catalogue which is a listing of star clusters, nebulae and galaxies.) ...
... Alpha Centauri is the closest binary to our sun and Proxima Centauri orbits this binary. Omega Centauri (NGC 5139) is globular cluster. The two pointers Apha & Beta Centauri point to Crux. (NGC is the abbreviation for New General Catalogue which is a listing of star clusters, nebulae and galaxies.) ...
the life cycles of stars (5) - U3A Bendigo Courses / Activities
... HEAVY WEIGHT STARS with zero age mass more than 8 M O The main sequence life burning hydrogen lasts only 100 million years instead of 10 billion for the sun. These are O and B type stars. Even before leaving the main sequence these stars emit material from their surface due to sheer radiation pressu ...
... HEAVY WEIGHT STARS with zero age mass more than 8 M O The main sequence life burning hydrogen lasts only 100 million years instead of 10 billion for the sun. These are O and B type stars. Even before leaving the main sequence these stars emit material from their surface due to sheer radiation pressu ...
Astronomy Worksheet
... These are often caused by molecular absorption instead of absorption from a single element, and are known as molecular bands. In addition to gases around stars absorbing energy, Earth’s own atmosphere absorbs some of the frequencies from stars. These telluric absorption bands are well-established an ...
... These are often caused by molecular absorption instead of absorption from a single element, and are known as molecular bands. In addition to gases around stars absorbing energy, Earth’s own atmosphere absorbs some of the frequencies from stars. These telluric absorption bands are well-established an ...
Astronomy (stars, galaxies and the Universe)
... Groups of stars that form a pattern The revolution of the Earth around the Sun cause different constellations to be seen at different times of the year Stars located above the north and south poles, called circumpolar stars, appear to move in circles above the horizon each night Astronomers use cons ...
... Groups of stars that form a pattern The revolution of the Earth around the Sun cause different constellations to be seen at different times of the year Stars located above the north and south poles, called circumpolar stars, appear to move in circles above the horizon each night Astronomers use cons ...
Star Classification - University of Louisville
... An old Blue-white star becomes a Supergiant. They expand, just like average-sized stars expand to become Giant stars. Because they are beginning to run out of hydrogen, they cool down and glow a more orangey color. A star called Betelguese is extremely old, but also extremely big. In fact, it is 500 ...
... An old Blue-white star becomes a Supergiant. They expand, just like average-sized stars expand to become Giant stars. Because they are beginning to run out of hydrogen, they cool down and glow a more orangey color. A star called Betelguese is extremely old, but also extremely big. In fact, it is 500 ...
WHERE DO ELEMENTS COME FROM?
... Gamma Ray Bursts: *brightest objects in universe *Thought to be collapsing stars (>30solar mass) March 19, 2008 – above GRB was a naked eye object But is over 7 Billion light years distant! 100 times brighter than all stars in Milky Way combined! ...
... Gamma Ray Bursts: *brightest objects in universe *Thought to be collapsing stars (>30solar mass) March 19, 2008 – above GRB was a naked eye object But is over 7 Billion light years distant! 100 times brighter than all stars in Milky Way combined! ...
Classification and structure of galaxies
... Globular Clusters • millions to hundreds of millions of stars • old! 6 to 13 billion years • mostly red giants and dwarfs • stars are clumped closely together, especially near the center of the cluster (densely); stars don’t drift apart • surround our disk as a halo Image at http://hubblesite.org/n ...
... Globular Clusters • millions to hundreds of millions of stars • old! 6 to 13 billion years • mostly red giants and dwarfs • stars are clumped closely together, especially near the center of the cluster (densely); stars don’t drift apart • surround our disk as a halo Image at http://hubblesite.org/n ...
http://webcache.googleusercontent.com/search?q=cache
... "Good fortune but troubles, discontent and fear occasioned by own temerity rather than circumstances." [13] ...
... "Good fortune but troubles, discontent and fear occasioned by own temerity rather than circumstances." [13] ...
Life on the Main Sequence + Expansion to Red Giant
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer four essential questions: • Why is there a main sequence of stellar luminosities and surface temperatures? • Why is there a simple relationship between the m ...
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer four essential questions: • Why is there a main sequence of stellar luminosities and surface temperatures? • Why is there a simple relationship between the m ...
tut35 Magnitudes
... sunset or just after sunrise. The full Moon’s size and 3.6 magnitude/arcsecond2 makes for an easy daylight sighting. At greatest elongation, Venus’ magnitude/arcsecond2 is 1.9. The large contrast with the daylight sky makes Venus a relatively easy naked-eye object if one is aware of its location. 3. ...
... sunset or just after sunrise. The full Moon’s size and 3.6 magnitude/arcsecond2 makes for an easy daylight sighting. At greatest elongation, Venus’ magnitude/arcsecond2 is 1.9. The large contrast with the daylight sky makes Venus a relatively easy naked-eye object if one is aware of its location. 3. ...
Stars and Galaxies - La Salle Elementary Public Schools No 122
... • When a star’s hydrogen supply is nearly gone, the star leaves the main sequence and begins the next stage of its life cycle. • All stars form in the same way, but stars die in different ways, depending on their masses. ...
... • When a star’s hydrogen supply is nearly gone, the star leaves the main sequence and begins the next stage of its life cycle. • All stars form in the same way, but stars die in different ways, depending on their masses. ...
THE METER STICK MODEL OF THE SOLAR SYSTEM
... Distances between planets are very large but they are insignificant compared with distances between stars. Because units that are commonly used to measure distances on Earth such as miles or kilometers are too small for use in astronomy, other units of distance are needed. Within the solar system, t ...
... Distances between planets are very large but they are insignificant compared with distances between stars. Because units that are commonly used to measure distances on Earth such as miles or kilometers are too small for use in astronomy, other units of distance are needed. Within the solar system, t ...
File
... • If the core could shrink and compress like it did at the horizontal branch phase, it would eventually heat up and fuse the carbon and oxygen. • But for stars with masses less than 4 times solar a property called electron degeneracy kicks in. • The white dwarf acts like a giant atom with electrons ...
... • If the core could shrink and compress like it did at the horizontal branch phase, it would eventually heat up and fuse the carbon and oxygen. • But for stars with masses less than 4 times solar a property called electron degeneracy kicks in. • The white dwarf acts like a giant atom with electrons ...
Wien`s Law and Temperature
... 8. A more accurate way to determine the spectral class of a star is by looking at the absorption lines in the star and the general shape of the curve. Don’t panic, this is almost more of an art and it takes practice, so here we go. Open the program Graphical Analysis and then open the file for star ...
... 8. A more accurate way to determine the spectral class of a star is by looking at the absorption lines in the star and the general shape of the curve. Don’t panic, this is almost more of an art and it takes practice, so here we go. Open the program Graphical Analysis and then open the file for star ...
CS3_Ch 3 - Leon County Schools
... • When a star’s hydrogen supply is nearly gone, the star leaves the main sequence and begins the next stage of its life cycle. • All stars form in the same way, but stars die in different ways, depending on their masses. ...
... • When a star’s hydrogen supply is nearly gone, the star leaves the main sequence and begins the next stage of its life cycle. • All stars form in the same way, but stars die in different ways, depending on their masses. ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.