answer key
... cycle? (Our sun is currently in this phase) 5. What are the most common types of stars in our universe? 6. This type of star has a surface temperature of 45,000 degrees F and is up to 20 times the mass of the sun. 7. How long will our Sun live? ...
... cycle? (Our sun is currently in this phase) 5. What are the most common types of stars in our universe? 6. This type of star has a surface temperature of 45,000 degrees F and is up to 20 times the mass of the sun. 7. How long will our Sun live? ...
HR Diagram
... 4. How many of the stars in table 10.1 are hotter than the Sun (spectral classes O,B,A,F)? If double star both must be considered. # = __________ How many of the stars in table 10.2 are hotter than the Sun (spectral classes O,B,A,F)? If double star both must be considered. # = __________ ...
... 4. How many of the stars in table 10.1 are hotter than the Sun (spectral classes O,B,A,F)? If double star both must be considered. # = __________ How many of the stars in table 10.2 are hotter than the Sun (spectral classes O,B,A,F)? If double star both must be considered. # = __________ ...
Frantic Finish - Max-Planck
... imum as conventional Type II supernovae. The problem is: “These objects are all extremely far away. We can often register only the light curves, and the spectra are not conclusive in detail,” says Hans-Thomas Janka. What causes these supernovae? The researchers can only speculate. After an initial e ...
... imum as conventional Type II supernovae. The problem is: “These objects are all extremely far away. We can often register only the light curves, and the spectra are not conclusive in detail,” says Hans-Thomas Janka. What causes these supernovae? The researchers can only speculate. After an initial e ...
Luminosity
... Why do the hottest spectra (types O and B) show few absorption lines? 1. Many elements have been used up in these stars 2. These stars are old and were formed before there were many elements in the galaxy 3. Many atoms in these stars are ionized–have lost electrons–so can’t absorb 4. Much of their ...
... Why do the hottest spectra (types O and B) show few absorption lines? 1. Many elements have been used up in these stars 2. These stars are old and were formed before there were many elements in the galaxy 3. Many atoms in these stars are ionized–have lost electrons–so can’t absorb 4. Much of their ...
Star Quiz - Sue Ryder
... • Advertise your quiz well, using email and posters in communal areas and at the venue. • In preparation for the big night print out enough copies of the questions for everyone taking part - but remember, don’t include the answers! • Make sure you have plenty of help on the night; you will need some ...
... • Advertise your quiz well, using email and posters in communal areas and at the venue. • In preparation for the big night print out enough copies of the questions for everyone taking part - but remember, don’t include the answers! • Make sure you have plenty of help on the night; you will need some ...
Document
... “All stars form in much the same manner as the Sun did. The formation of a star begins with a cloud of interstellar gas and dust, called a nebula, which collapses on itself as a result of its own gravity…. The condensed object will become a new star.” ...
... “All stars form in much the same manner as the Sun did. The formation of a star begins with a cloud of interstellar gas and dust, called a nebula, which collapses on itself as a result of its own gravity…. The condensed object will become a new star.” ...
nasafinal - University of Oregon
... redshift (i.e. when they were young). In principle, these XUV structures are suggesting that galaxies can’t be as big as we think they are, when we observe them at high redshift. ...
... redshift (i.e. when they were young). In principle, these XUV structures are suggesting that galaxies can’t be as big as we think they are, when we observe them at high redshift. ...
The Hubble Space Telescope - the first 10 years
... The Hubble Deep Field (150 orbits of data) • It only covers 1millionth of the sky but: – It’s the deepest image ever taken of the Universe looking back to when the Universe was: 1 billion years old (I.e., 10% of its current age) – In it we see that the most distant galaxies are very irregular unlike ...
... The Hubble Deep Field (150 orbits of data) • It only covers 1millionth of the sky but: – It’s the deepest image ever taken of the Universe looking back to when the Universe was: 1 billion years old (I.e., 10% of its current age) – In it we see that the most distant galaxies are very irregular unlike ...
What constitutes the dark matter?
... • 400.000 yr after big bang: plasma becomes gas (hydrogen, He) • Jeans 1904: formation of proto-clusters ...
... • 400.000 yr after big bang: plasma becomes gas (hydrogen, He) • Jeans 1904: formation of proto-clusters ...
Death - Wayne State University Physics and Astronomy
... • They are now known to be caused by old, dead stars • The spectra of a nova shows blue-shifted absorption lines showing that a hot dense gas is expanding towards us at a few thousands of kilometers per second • The continuum is from the hot dense gas and the absorption lines are from the lowerdensi ...
... • They are now known to be caused by old, dead stars • The spectra of a nova shows blue-shifted absorption lines showing that a hot dense gas is expanding towards us at a few thousands of kilometers per second • The continuum is from the hot dense gas and the absorption lines are from the lowerdensi ...
What`s in the sky tonight - Forsyth Astronomical Society
... With so much attention focused on revisiting the Moon, it's time to ask a big question: Can we work effectively with the dirt and rocks on top of its bedrock (the regolith)? Any serious talk of working or staying on the Moon includes ways of shoveling lunar soil on top of a lunar base, to protect it ...
... With so much attention focused on revisiting the Moon, it's time to ask a big question: Can we work effectively with the dirt and rocks on top of its bedrock (the regolith)? Any serious talk of working or staying on the Moon includes ways of shoveling lunar soil on top of a lunar base, to protect it ...
Chapter10 (with interactive links)
... Absolute magnitude: how bright the star would be at a fixed distance of 10 parsecs from us. This is useful because it allows us to quickly compare the true luminosity of each object if we imagine that every object is at the same distance from us! M = m – 5log(d) +5 or m-M = 5log(d) -5 M = absolut ...
... Absolute magnitude: how bright the star would be at a fixed distance of 10 parsecs from us. This is useful because it allows us to quickly compare the true luminosity of each object if we imagine that every object is at the same distance from us! M = m – 5log(d) +5 or m-M = 5log(d) -5 M = absolut ...
aas_gdemessieres - Astronomy at Swarthmore College
... t Sco is an unusually young star (Kilian 1994), and it could retain a primordial magnetic field from its formation, thus it is a potential candidate for the MCWS mechanism. A polar magnetic field strength of just a few 10’s of G in this star could lead to significant magnetic effects (h* ~ 1). Preli ...
... t Sco is an unusually young star (Kilian 1994), and it could retain a primordial magnetic field from its formation, thus it is a potential candidate for the MCWS mechanism. A polar magnetic field strength of just a few 10’s of G in this star could lead to significant magnetic effects (h* ~ 1). Preli ...
SIERRA STAR GAZERS
... is also known as the Cygnus Loop. Composed of NGC 6960, 6992 and 6995, this large collection of nebulosity is the result of a supernova explosion about 2,500 light years distant that occurred some 15,000 years ago. This type II supernova marked the final chapter in the life of a supergiant star with ...
... is also known as the Cygnus Loop. Composed of NGC 6960, 6992 and 6995, this large collection of nebulosity is the result of a supernova explosion about 2,500 light years distant that occurred some 15,000 years ago. This type II supernova marked the final chapter in the life of a supergiant star with ...
Origin of the Earth and of the Solar System
... Rotating gas and dust clouds contract to accretion discs, since only in the equatorial plane gravitation and centrifugal force ban be in equilibrium. The picture sequence (Source: Nature) shows the (successful) simulation of the formation of protoplanets in an ...
... Rotating gas and dust clouds contract to accretion discs, since only in the equatorial plane gravitation and centrifugal force ban be in equilibrium. The picture sequence (Source: Nature) shows the (successful) simulation of the formation of protoplanets in an ...
part4.
... “faced” by the infalling dust i.e. just r 2 , where r is the radius of the star. But the dust is accreted not only due to motion of the star through the cloud, but also due to gravitation of the star. Let’s see how. To simplify the matters, let’s go to the frame of reference of the moving star. ...
... “faced” by the infalling dust i.e. just r 2 , where r is the radius of the star. But the dust is accreted not only due to motion of the star through the cloud, but also due to gravitation of the star. Let’s see how. To simplify the matters, let’s go to the frame of reference of the moving star. ...
Where do elements come from?
... • Everything is made from the elements created in massive stars. Stars are huge factories producing the elements found in the Universe. ...
... • Everything is made from the elements created in massive stars. Stars are huge factories producing the elements found in the Universe. ...
PDF - BYU Studies
... n their role as teachers of the word and will of God, prophets occasion ally mention natural processes or phenomena. Often these references are clearly symbolic or figurative, as when the scriptures speak of “the four quarters of the earth” to mean throughout the whole world. A nicely poetic exampl ...
... n their role as teachers of the word and will of God, prophets occasion ally mention natural processes or phenomena. Often these references are clearly symbolic or figurative, as when the scriptures speak of “the four quarters of the earth” to mean throughout the whole world. A nicely poetic exampl ...
Integrated Science
... 1st a huge cloud of nebula 2nd as the density of the gas grows so does gravitational pull (more particles are collected) 3rd the forming star is called a Protostar. 4th Density increases as gravity continues to crunch the matter together ...
... 1st a huge cloud of nebula 2nd as the density of the gas grows so does gravitational pull (more particles are collected) 3rd the forming star is called a Protostar. 4th Density increases as gravity continues to crunch the matter together ...
1_Introduction
... What the %$*&@ does this have to do with finding distances to stars?? If you know the luminosity L, and you measure the flux f, you can compute the distance r: ...
... What the %$*&@ does this have to do with finding distances to stars?? If you know the luminosity L, and you measure the flux f, you can compute the distance r: ...
Return both exam and scantron sheet when you
... (b) chromosphere. (c) ionosphere. (d) photosphere. 45. The neutrinos interact with other elementary particles via (a) electrical force. (b) magnetic force. (c) strong nuclear force. (d) weak nuclear force. 46. The solar neutrino problem was resolved by experiments in (a) Homestake mine. (b) Sudbury ...
... (b) chromosphere. (c) ionosphere. (d) photosphere. 45. The neutrinos interact with other elementary particles via (a) electrical force. (b) magnetic force. (c) strong nuclear force. (d) weak nuclear force. 46. The solar neutrino problem was resolved by experiments in (a) Homestake mine. (b) Sudbury ...
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.