Essential Questions
... including planets, their moons, and asteroids that are held in orbit around the sun by its gravitational pull on them. (MS-ESS1-2), (MSESS1-3) The model of the solar system can explain eclipses of the sun and the moon. Earth’s spin axis is fixed in direction over the short-term but tilted relative t ...
... including planets, their moons, and asteroids that are held in orbit around the sun by its gravitational pull on them. (MS-ESS1-2), (MSESS1-3) The model of the solar system can explain eclipses of the sun and the moon. Earth’s spin axis is fixed in direction over the short-term but tilted relative t ...
Small Wonders: Andromeda
... map, then narrow in with the above one. 7662 - the Blue Snowball is CERTAINLY worth the effort. I noted that it was nonstellar at 37x in my 4" refractor, and recall it as being an amazing shade of blue in both my 8" and 4" scopes. It's a planetary nebula, and remember these can support high powers s ...
... map, then narrow in with the above one. 7662 - the Blue Snowball is CERTAINLY worth the effort. I noted that it was nonstellar at 37x in my 4" refractor, and recall it as being an amazing shade of blue in both my 8" and 4" scopes. It's a planetary nebula, and remember these can support high powers s ...
10438 starlight - The Described and Captioned Media Program
... krn (about 6 million miles). Milky Way-A large spiral galaxy of about a hundred billion stars arrayed in the form of a disk, with a central bulge (some 30,000 light-years across) of closely packed stars. The Milky Way is the galaxy that contains Earth. nuclear fusion-The ...
... krn (about 6 million miles). Milky Way-A large spiral galaxy of about a hundred billion stars arrayed in the form of a disk, with a central bulge (some 30,000 light-years across) of closely packed stars. The Milky Way is the galaxy that contains Earth. nuclear fusion-The ...
File
... this is why they appear red to our eyes. This color is also seen in red giant stars which are larger in size and they are still colder. Station 3: Blue (Sirius & Vega) ...
... this is why they appear red to our eyes. This color is also seen in red giant stars which are larger in size and they are still colder. Station 3: Blue (Sirius & Vega) ...
temperature - University of Texas Astronomy Home Page
... The most important PhD thesis in modern astrophysics: the stars are MOSTLY hydrogen (and helium) with trace levels of other elements. We only see those strong lines from the trace elements when there are variations in stellar temperature. ...
... The most important PhD thesis in modern astrophysics: the stars are MOSTLY hydrogen (and helium) with trace levels of other elements. We only see those strong lines from the trace elements when there are variations in stellar temperature. ...
Fifth - Department of Physics and Astronomy
... • Magnetic flux is also conserved such that the surface B fields is intensified. • The rotating B field creates an E field that rips charged particles from the surface of the star, which later get beamed by the B field and ejected at the poles. • They were discovered during a radio survey of the Gal ...
... • Magnetic flux is also conserved such that the surface B fields is intensified. • The rotating B field creates an E field that rips charged particles from the surface of the star, which later get beamed by the B field and ejected at the poles. • They were discovered during a radio survey of the Gal ...
Packet 3
... 7. Stars that are closer than 32.6 light-years away appear __________________________. Therefore those stars that are further than 32.6 light-years away appear ________________________. 8. How far away a star would be if it’s apparent magnitude and absolute magnitude were equal? _________ Match the ...
... 7. Stars that are closer than 32.6 light-years away appear __________________________. Therefore those stars that are further than 32.6 light-years away appear ________________________. 8. How far away a star would be if it’s apparent magnitude and absolute magnitude were equal? _________ Match the ...
Collapse: Method 2
... Abundance gradient. Inner solar system is poor in light volatile gases such as H, He, but rich in Fe & Ni. Outer solar system is rich in volatiles H, He, etc. Abundances similar to that of the sun. ...
... Abundance gradient. Inner solar system is poor in light volatile gases such as H, He, but rich in Fe & Ni. Outer solar system is rich in volatiles H, He, etc. Abundances similar to that of the sun. ...
PPT
... •The Coma Cluster, shown at right, is 300 million light years from the Milky Way and contains more than 1,000 (and possibly as many as 10,000) galaxies. •The Milky Way is a member of a small cluster called the Local Group which contains about 40 galaxies. The largest member of the Local Group is M 3 ...
... •The Coma Cluster, shown at right, is 300 million light years from the Milky Way and contains more than 1,000 (and possibly as many as 10,000) galaxies. •The Milky Way is a member of a small cluster called the Local Group which contains about 40 galaxies. The largest member of the Local Group is M 3 ...
Universal redshift, the Hubble constant The cosmic background
... RR Lyrae (red giants) – local globular clusters Supernova SN Ia – all have the same light–curve ...
... RR Lyrae (red giants) – local globular clusters Supernova SN Ia – all have the same light–curve ...
Astrophysics
... well because that is the only way the universe has to create the heavier elements - without which we wouldn’t be here to talk about it. We are literally made of stardust! Tycho Brahe saw the supernova in Cassiopeia in 1572 and that was one of the reasons he decided to study astronomy with such vigou ...
... well because that is the only way the universe has to create the heavier elements - without which we wouldn’t be here to talk about it. We are literally made of stardust! Tycho Brahe saw the supernova in Cassiopeia in 1572 and that was one of the reasons he decided to study astronomy with such vigou ...
Galaxies over the Latter Half of Cosmic Time
... The AEGIS picture contains one billion picture elements—the equivalent of 500 highdefinition TV screens. It includes images of over 25,000 galaxies maturing to adulthood over the last several billion years. ...
... The AEGIS picture contains one billion picture elements—the equivalent of 500 highdefinition TV screens. It includes images of over 25,000 galaxies maturing to adulthood over the last several billion years. ...
Newfoundland Sky in Summer
... room than in a dark one. The sun itself i s a star. Other stars are bigger and brighter than the sun but are much fainter because they are so far away. Some stars look brighter than others, but these are not necessarily the biggest, and many of the largest stars cannot be seen at all. One of the lar ...
... room than in a dark one. The sun itself i s a star. Other stars are bigger and brighter than the sun but are much fainter because they are so far away. Some stars look brighter than others, but these are not necessarily the biggest, and many of the largest stars cannot be seen at all. One of the lar ...
Sequencing the Stars
... here. The main sequence is plainly evident! As with any wide-field image, there are several stars that do not belong to the object under study. In this case, these are fainter background stars whose colors are largely uncorrelated with apparent brightness because they are at varying distances and th ...
... here. The main sequence is plainly evident! As with any wide-field image, there are several stars that do not belong to the object under study. In this case, these are fainter background stars whose colors are largely uncorrelated with apparent brightness because they are at varying distances and th ...
Time From the Perspective of a Particle Physicist
... • If we use well-understood close stars to determine the overall brightness scale of a specific class of star, then measuring the spectrum can be used to give the distance for stars > 500 LY away 1. Determine Surface Temperature + spectral class of star 2. Determine where on HR diagram should go 3. ...
... • If we use well-understood close stars to determine the overall brightness scale of a specific class of star, then measuring the spectrum can be used to give the distance for stars > 500 LY away 1. Determine Surface Temperature + spectral class of star 2. Determine where on HR diagram should go 3. ...
Stars
... amount of energy, but there are billions of reactions per second. Each second, the Sun produces 4 × 1026 joules of energy. It would take 2,000 million nuclear power plants a whole year to produce the same amount of energy on Earth. In the Sun, and in most stars, hydrogen atoms fuse together to form ...
... amount of energy, but there are billions of reactions per second. Each second, the Sun produces 4 × 1026 joules of energy. It would take 2,000 million nuclear power plants a whole year to produce the same amount of energy on Earth. In the Sun, and in most stars, hydrogen atoms fuse together to form ...
ch 15 notes
... Measuring Distances to Stars Astronomers often use parallax to measure distances to nearby stars (within a few hundred light years, that is). ...
... Measuring Distances to Stars Astronomers often use parallax to measure distances to nearby stars (within a few hundred light years, that is). ...
Chapter 15 Stars, Galaxies, and Universe Galaxies
... Measuring Distances to Stars Astronomers often use parallax to measure distances to nearby stars (within a few hundred light years, that is). ...
... Measuring Distances to Stars Astronomers often use parallax to measure distances to nearby stars (within a few hundred light years, that is). ...
Chapter 8 powerpoint presentation
... is we obtain a spectrum for a star of unknown distance. We use the spectrum to determine the spectral type, which locates it on the x-axis of the H-R diagram. Now draw a line up to the main sequence, and continue it horizontally to determine it’s absolute magnitude, Mv. The absolute magnitude combin ...
... is we obtain a spectrum for a star of unknown distance. We use the spectrum to determine the spectral type, which locates it on the x-axis of the H-R diagram. Now draw a line up to the main sequence, and continue it horizontally to determine it’s absolute magnitude, Mv. The absolute magnitude combin ...
lecture19 - Stony Brook University
... Recall that the neutron core formed just before the supernova erupted had very high density. The neutrons are as close as quantum mechanics will allow them (degenerate). The density of the neutron star is about the same as inside an nucleus of the atom – but for the neutron star, instead of having 1 ...
... Recall that the neutron core formed just before the supernova erupted had very high density. The neutrons are as close as quantum mechanics will allow them (degenerate). The density of the neutron star is about the same as inside an nucleus of the atom – but for the neutron star, instead of having 1 ...
The Milky Way
... • You ARE responsible for understanding the topics covered in class (including details in the book that I may not have mentioned). • You are NOT responsible for other stuff in these chapters not covered at all in lecture. ...
... • You ARE responsible for understanding the topics covered in class (including details in the book that I may not have mentioned). • You are NOT responsible for other stuff in these chapters not covered at all in lecture. ...
Essay - CLC Charter School
... much energy as the sun will in a life- time, and the explosion is equivalent to the power in a 1028 megaton bomb (i.e., a few octillion nuclear warheads). How Do Supernovae Occur Supernovae occur when the star’s core fusion process runs out of fuel. The outward pressure drops, causing the gravitatio ...
... much energy as the sun will in a life- time, and the explosion is equivalent to the power in a 1028 megaton bomb (i.e., a few octillion nuclear warheads). How Do Supernovae Occur Supernovae occur when the star’s core fusion process runs out of fuel. The outward pressure drops, causing the gravitatio ...
D2 Stellar characteristics and stellar evolution
... • The Electromagnetic Spectrum In astronomy, we cannot perform experiments with our objects (stars, galaxies, …). ...
... • The Electromagnetic Spectrum In astronomy, we cannot perform experiments with our objects (stars, galaxies, …). ...
The Galaxy–Dark Matter Connection
... Perhaps the most natural one is starvation (or strangulation): Infalling gas is mainly accreted by the central galaxy. Satellites galaxies (slowly) starve. This is the only environmental process currently included in semi-analytical models. Is this good enough? What about the morphology-density rela ...
... Perhaps the most natural one is starvation (or strangulation): Infalling gas is mainly accreted by the central galaxy. Satellites galaxies (slowly) starve. This is the only environmental process currently included in semi-analytical models. Is this good enough? What about the morphology-density rela ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.