Document
... Create the integrated spectrum (due to target RGB star + stellar background) in a spaxel of 50mas x 50 mas a) decide characteristics of the target RGB star (magnitude, color, [Fe/H], [alpha/Fe], velocity) b) create the stellar background using a stellar population code developed by Joe Liske & E.Tol ...
... Create the integrated spectrum (due to target RGB star + stellar background) in a spaxel of 50mas x 50 mas a) decide characteristics of the target RGB star (magnitude, color, [Fe/H], [alpha/Fe], velocity) b) create the stellar background using a stellar population code developed by Joe Liske & E.Tol ...
Slide 1
... Distance to galaxy = 920 Mpc (c) The magnitude measurement gives a greater distance measurement than the one obtained from red-shift measurement. ...
... Distance to galaxy = 920 Mpc (c) The magnitude measurement gives a greater distance measurement than the one obtained from red-shift measurement. ...
Is the initial mass function universal?
... flux ratios Clusters with different metallicity to test for variations due to the critical density Variations in cluster mass ...
... flux ratios Clusters with different metallicity to test for variations due to the critical density Variations in cluster mass ...
Expanding Universe
... Dark energy is stronger at large distances, and now, because of two reasons. At distance, gravity is weaker because of the laws of inverse squares. Dark energy appears to be a property of space itself, and as the universe expands, there will be more and more space. ...
... Dark energy is stronger at large distances, and now, because of two reasons. At distance, gravity is weaker because of the laws of inverse squares. Dark energy appears to be a property of space itself, and as the universe expands, there will be more and more space. ...
Stellar Evolution
... of a Magnetar apart, releasing more energy in .2 seconds than the Sun puts out in 250,000 years. The magnetism would kill you within 600 miles by reshaping the atoms in your body. ...
... of a Magnetar apart, releasing more energy in .2 seconds than the Sun puts out in 250,000 years. The magnetism would kill you within 600 miles by reshaping the atoms in your body. ...
Astronomical Coordinates, Distances and Magnitudes
... direction as, for instance, the corner of the room or the tower of the church. The abstraction of this natural SR is named the Spherical Polar System. The position of a point is given by three coordinates: two angles (φ,θ) and a distance (r) as shown in the figure. The geographical (geographical lat ...
... direction as, for instance, the corner of the room or the tower of the church. The abstraction of this natural SR is named the Spherical Polar System. The position of a point is given by three coordinates: two angles (φ,θ) and a distance (r) as shown in the figure. The geographical (geographical lat ...
P3 Further Physics - The Thomas Cowley High School
... Electromagnetism – The motor effect • A current carrying wire in a magnetic field experiences a force. • The force: – Increases with more current and a stronger field. – Is at right angles to the magnetic field and current. – Is reversed if the current or field is reversed. ...
... Electromagnetism – The motor effect • A current carrying wire in a magnetic field experiences a force. • The force: – Increases with more current and a stronger field. – Is at right angles to the magnetic field and current. – Is reversed if the current or field is reversed. ...
Chapter 27 Quasars, Active Galaxies, and Gamma
... If we could see the last few seconds of the collapse of a star to form a black hole, we would see the star grow steadily redder. Why? 1. The star moves away from us at an increasing speed. 2. The star grows steadily cooler. 3. The star's gravitational redshift increases. 4. The star becomes obscure ...
... If we could see the last few seconds of the collapse of a star to form a black hole, we would see the star grow steadily redder. Why? 1. The star moves away from us at an increasing speed. 2. The star grows steadily cooler. 3. The star's gravitational redshift increases. 4. The star becomes obscure ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... The Earth and Moon formed from the glancing impact of a large body on the proto-Earth. ...
... The Earth and Moon formed from the glancing impact of a large body on the proto-Earth. ...
the rest of the univ..
... many as millions of years to complete a single orbit. On the other hand, some comets, like Halley's ...
... many as millions of years to complete a single orbit. On the other hand, some comets, like Halley's ...
ASTRONOMY WEBQUEST…… EXPLORE THE UNIVERSE
... 15. What types of stars make up open clusters, and what is the fate of these stars?____________________ _____________________________________________________________________________________ 16. Describe the cluster that includes our own Sun. ___________________________________________ ______________ ...
... 15. What types of stars make up open clusters, and what is the fate of these stars?____________________ _____________________________________________________________________________________ 16. Describe the cluster that includes our own Sun. ___________________________________________ ______________ ...
Lecture (Powerpoint)
... when they have burned all the way to iron in the core. New ash from burning continues to pile onto iron core until pressure cannot support it any more ...
... when they have burned all the way to iron in the core. New ash from burning continues to pile onto iron core until pressure cannot support it any more ...
Lecture24
... • Where is the center of the expansion? • Nowhere, there is no center, the universe is homogenous and isotropic • Do we expand as well? • No, because we are bound by electromagnetic forces • Do galaxies expand? • No because they are bound by gravity and they detach from the Hubble Flow ...
... • Where is the center of the expansion? • Nowhere, there is no center, the universe is homogenous and isotropic • Do we expand as well? • No, because we are bound by electromagnetic forces • Do galaxies expand? • No because they are bound by gravity and they detach from the Hubble Flow ...
Cosmic distance scales - Inside Mines
... • Sun – Earth distance: ≈150,000,000 km • New unit (appropriate within the solar ...
... • Sun – Earth distance: ≈150,000,000 km • New unit (appropriate within the solar ...
NASA`s Chandra Sees Brightest Supernova Ever
... Problems-(2) The mass-loss rate for the progenitor from x-ray data is about 5 × 10−4 M⊙ yr−1. We find that it falls short of the circumstellar density that would be needed to power the visual light curve of SN 2006gy by three orders of magnitude. That account for why we observe a relatively weak ...
... Problems-(2) The mass-loss rate for the progenitor from x-ray data is about 5 × 10−4 M⊙ yr−1. We find that it falls short of the circumstellar density that would be needed to power the visual light curve of SN 2006gy by three orders of magnitude. That account for why we observe a relatively weak ...
Star Light, Star Bright
... Begin a discussion of distances in space. Tell students that our star, the Sun, is a great distance from Earth, but that the next closest star is 272 times that distance from Earth! Write 149,600,000 km = Earth to Sun on the board; under it, write 40,678,000,000 km = Earth to Alpha Centauri. Tell st ...
... Begin a discussion of distances in space. Tell students that our star, the Sun, is a great distance from Earth, but that the next closest star is 272 times that distance from Earth! Write 149,600,000 km = Earth to Sun on the board; under it, write 40,678,000,000 km = Earth to Alpha Centauri. Tell st ...
The Magnitude Scale
... filtered band intended to be close to visual) is around 550 nm; CCDs tend to peak around 700 nm. The examples are given for integer values are not "exact", in that celestial objects are often measured to a precision or 0.1 or 0.01 magnitude; for example, Sirius shines at V = -1.47 (Yale Bright Star ...
... filtered band intended to be close to visual) is around 550 nm; CCDs tend to peak around 700 nm. The examples are given for integer values are not "exact", in that celestial objects are often measured to a precision or 0.1 or 0.01 magnitude; for example, Sirius shines at V = -1.47 (Yale Bright Star ...
The Andromeda Galaxy
... Local group, which has the Andromeda Galaxy, the Milky Way, the Triangulum Galaxy, and about 30 other smaller galaxies ...
... Local group, which has the Andromeda Galaxy, the Milky Way, the Triangulum Galaxy, and about 30 other smaller galaxies ...
What we will do today:
... balloon up over time) but the space between them, just like in the universe (over time). • It can also be used to work out speed of each galaxy by recording the distances between galaxies and the time taken to increase these distances when blown. The more you blow up the balloon – the faster the spe ...
... balloon up over time) but the space between them, just like in the universe (over time). • It can also be used to work out speed of each galaxy by recording the distances between galaxies and the time taken to increase these distances when blown. The more you blow up the balloon – the faster the spe ...
Lecture2 - University of Waterloo
... Universe: the Sun and moon go around the Earth (but the other planets go around the Sun) • However, he also believed that this theory could be tested by making sufficiently accurate observations At time this was a revolutionary approach: different from the idea that phenomena could be understood t ...
... Universe: the Sun and moon go around the Earth (but the other planets go around the Sun) • However, he also believed that this theory could be tested by making sufficiently accurate observations At time this was a revolutionary approach: different from the idea that phenomena could be understood t ...
Structure of the solar system
... That it is closer than 10 pc. As Sirius is moved to 10 pc it becomes dimmer, therefore it must be closer than 10 pc. Betelgeuse has as smaller absolute magnitude, what does this mean? That it is further than 10 pc, as it it moved to 10 pc it become brighter, therefore it must have moved closer. GJ 7 ...
... That it is closer than 10 pc. As Sirius is moved to 10 pc it becomes dimmer, therefore it must be closer than 10 pc. Betelgeuse has as smaller absolute magnitude, what does this mean? That it is further than 10 pc, as it it moved to 10 pc it become brighter, therefore it must have moved closer. GJ 7 ...
astronomy - Scioly.org
... 45. Star A is twice as far away as Star B. The parallax of A is A. half that of Star B. B. the same as Star B. C. twice that of Star B. D. four times that of Star B. 46. How much brighter is a -2 magnitude star than a +2 magnitude star? 47. RR Lyrae variable stars are typically _________ giant stars ...
... 45. Star A is twice as far away as Star B. The parallax of A is A. half that of Star B. B. the same as Star B. C. twice that of Star B. D. four times that of Star B. 46. How much brighter is a -2 magnitude star than a +2 magnitude star? 47. RR Lyrae variable stars are typically _________ giant stars ...
Does size matter (in the SFRs)?
... They were selected from the UGC catalog (Nilson 1973) and the RC3 (de Vaucouleurs et al. 1992). For more details about the selection of the sample see Hidalgo-Gámez 2004 (Rev. Mex. A&A 40, 39). Narrow-band Hα and continuum images were obtained for a total of 18 dS galaxies at the 1.5m telescope at S ...
... They were selected from the UGC catalog (Nilson 1973) and the RC3 (de Vaucouleurs et al. 1992). For more details about the selection of the sample see Hidalgo-Gámez 2004 (Rev. Mex. A&A 40, 39). Narrow-band Hα and continuum images were obtained for a total of 18 dS galaxies at the 1.5m telescope at S ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... size R. You can get L by solving F = 4πd 2 , where F is the flux you measure— but you then also need d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the o ...
... size R. You can get L by solving F = 4πd 2 , where F is the flux you measure— but you then also need d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the o ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.