Astronomy - Career Account Web Pages
... The most distant objects in the universe appear extremely red because their light is stretched to longer, redder wavelengths by the expansion of the universe. This object is at an extremely faint magnitude of 29, which is 500 million times fainter that the faintest stars seen by the human eye. The d ...
... The most distant objects in the universe appear extremely red because their light is stretched to longer, redder wavelengths by the expansion of the universe. This object is at an extremely faint magnitude of 29, which is 500 million times fainter that the faintest stars seen by the human eye. The d ...
Neutron Stars PowerPoint
... • Deduced from cyclical Doppler shift every 1.7 days • Pulsing period of ~ 1.24 seconds ...
... • Deduced from cyclical Doppler shift every 1.7 days • Pulsing period of ~ 1.24 seconds ...
Neutron Stars PowerPoint
... • Deduced from cyclical Doppler shift every 1.7 days • Pulsing period of ~ 1.24 seconds ...
... • Deduced from cyclical Doppler shift every 1.7 days • Pulsing period of ~ 1.24 seconds ...
Today`s Powerpoint
... Composition unknown. Probably mostly exotic particles that don't interact with ordinary matter at all (except gravity). Some may be brown dwarfs, dead white dwarfs … Most likely it's a dark halo surrounding the Milky Way. ...
... Composition unknown. Probably mostly exotic particles that don't interact with ordinary matter at all (except gravity). Some may be brown dwarfs, dead white dwarfs … Most likely it's a dark halo surrounding the Milky Way. ...
Ay 112 Midterm review
... Depending on the temperature, different ionization states are present and lines have different strengths in the spectrum. This gives us another way to determine the photospheric temperature (besides Wiens law ...
... Depending on the temperature, different ionization states are present and lines have different strengths in the spectrum. This gives us another way to determine the photospheric temperature (besides Wiens law ...
15_Testbank
... D) Because there is still uncertainty over what generates the energy in stellar cores. E) Because it refers to stellar masses and these were difficult to measure accurately. Answer: B 16) Which of the following statements about spectral types of stars is true? A) The spectral type of a star can be u ...
... D) Because there is still uncertainty over what generates the energy in stellar cores. E) Because it refers to stellar masses and these were difficult to measure accurately. Answer: B 16) Which of the following statements about spectral types of stars is true? A) The spectral type of a star can be u ...
Beers_First_Stars_NIC_School
... Abstract: Numerical simulations of structure formation in the early Universe predict the formation of some fraction of stars with masses several hundred times the solar mass. No clear evidence of supernovae from such supermassive stars has, however, yet been found in the chemical compositions of Mil ...
... Abstract: Numerical simulations of structure formation in the early Universe predict the formation of some fraction of stars with masses several hundred times the solar mass. No clear evidence of supernovae from such supermassive stars has, however, yet been found in the chemical compositions of Mil ...
Production of Manganese-53 in a Self
... Fig. 2 shows the mass fraction ratio of 53Mn to 60Fe in a number of stellar models from [3]. Shown are two cases. The first has no mass cut for any star. The second has a mass cut at 3 solar masses for all stellar models with an initial mass of 25 solar masses or greater. The yield of 53Mn relative ...
... Fig. 2 shows the mass fraction ratio of 53Mn to 60Fe in a number of stellar models from [3]. Shown are two cases. The first has no mass cut for any star. The second has a mass cut at 3 solar masses for all stellar models with an initial mass of 25 solar masses or greater. The yield of 53Mn relative ...
poster
... cluster members are found around the reddening slope in the CMD, indicating that their color changes are caused by variable extinction (reddening). In contrast, only cluster members have slopes where the source becomes more blue as it fades (bluening). A change in the inner disk radius can cause thi ...
... cluster members are found around the reddening slope in the CMD, indicating that their color changes are caused by variable extinction (reddening). In contrast, only cluster members have slopes where the source becomes more blue as it fades (bluening). A change in the inner disk radius can cause thi ...
Stellar Continua
... I. The Paschen Continuum • The Paschen continuum slope (B-V) is a good temperature indicator • Varies smoothly with changing temperature • Slope is negative (blue is brighter) for hot stars and positive (visual is brighter) for cooler stars • B-V works as a temperature indicator from 3500K to 9000K ...
... I. The Paschen Continuum • The Paschen continuum slope (B-V) is a good temperature indicator • Varies smoothly with changing temperature • Slope is negative (blue is brighter) for hot stars and positive (visual is brighter) for cooler stars • B-V works as a temperature indicator from 3500K to 9000K ...
Descriptions For Posters
... Cassiopeia A is a supernova remnant at distance 11,000 light-years in our galaxy in the consellation Cassiopeia. The original star, about 15 to 20 times more massive than our sun, died in a cataclysmic "supernova" explosion relatively recently in our own Milky Way galaxy. Pandora’s Cluster The giant ...
... Cassiopeia A is a supernova remnant at distance 11,000 light-years in our galaxy in the consellation Cassiopeia. The original star, about 15 to 20 times more massive than our sun, died in a cataclysmic "supernova" explosion relatively recently in our own Milky Way galaxy. Pandora’s Cluster The giant ...
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... • Stars of given type of spectrum and the same colors have the same absolute magnitude (99.9%) • Stars have different apparent magnitudes depending on their distance. • Stars behind dust clouds look redder than they are intrinsically, so… m-M=5 log d1 –5+ A(l) (i.e., the star looks fainter) ...
... • Stars of given type of spectrum and the same colors have the same absolute magnitude (99.9%) • Stars have different apparent magnitudes depending on their distance. • Stars behind dust clouds look redder than they are intrinsically, so… m-M=5 log d1 –5+ A(l) (i.e., the star looks fainter) ...
Activity I: Plotting a Light Curve due to a Transit
... this dip in intensity repeated every 3.52 days. From the drop in intensity and the length of the period we can tell a number of things about the planet. The drop in intensity can lead us to tell the size of the planet and thus, if it is large enough to hold an atmosphere. The period of the planet wi ...
... this dip in intensity repeated every 3.52 days. From the drop in intensity and the length of the period we can tell a number of things about the planet. The drop in intensity can lead us to tell the size of the planet and thus, if it is large enough to hold an atmosphere. The period of the planet wi ...
Gamma Ray Bursts - University of Arizona
... Normal type Ib/Ic SNe! At Most, 5% Of supernovae Are GRBs (Berger et al. ...
... Normal type Ib/Ic SNe! At Most, 5% Of supernovae Are GRBs (Berger et al. ...
PHYS3380_111615_bw - The University of Texas at Dallas
... Nearby supernovae (< 50 light years) could kill many life forms on Earth through gamma radiation and high-energy particles. ...
... Nearby supernovae (< 50 light years) could kill many life forms on Earth through gamma radiation and high-energy particles. ...
American Scientist
... which they will be destroyed. Perhaps an easier way to provide constraints on hypotheses of planet formation is simply to stare at the planets themselves. Gas giants appear to be more common around stars with higher metallicities, consistent with the notion that one needs more solid material to cons ...
... which they will be destroyed. Perhaps an easier way to provide constraints on hypotheses of planet formation is simply to stare at the planets themselves. Gas giants appear to be more common around stars with higher metallicities, consistent with the notion that one needs more solid material to cons ...
electron degeneracy pressure and white dwarfs
... Important result of the theory: maximum mass for white dwarfs, which turns out to be 1.4 M. Electron degeneracy pressure cannot hold up a heavier mass. Implication: for stars with core mass less than 1.4 M, core collapse is stopped by electron degeneracy pressure before the horizon size is rea ...
... Important result of the theory: maximum mass for white dwarfs, which turns out to be 1.4 M. Electron degeneracy pressure cannot hold up a heavier mass. Implication: for stars with core mass less than 1.4 M, core collapse is stopped by electron degeneracy pressure before the horizon size is rea ...
PH607 – Galaxies 2
... 2. Interaction. With the discovery of the Sagittarius Dwarf Elliptical Galaxy came the discovery of a ribbon of galactic debris as the polar orbit of Sagittarius and its interaction with the Milky Way tears it apart. Similarly, with the discovery of the Canis Major Dwarf Galaxy , a ring of galactic ...
... 2. Interaction. With the discovery of the Sagittarius Dwarf Elliptical Galaxy came the discovery of a ribbon of galactic debris as the polar orbit of Sagittarius and its interaction with the Milky Way tears it apart. Similarly, with the discovery of the Canis Major Dwarf Galaxy , a ring of galactic ...
Problem 1. Marking scheme Lagrange Point
... satellite standing still relatively to shuttle, at about d 90 m distance away from the shuttle. After he finished his job he realizes that the systems designated to assure his come-back to shuttle were broken. He also observed that he has air only for 3 minutes. He also noticed that he possessed a ...
... satellite standing still relatively to shuttle, at about d 90 m distance away from the shuttle. After he finished his job he realizes that the systems designated to assure his come-back to shuttle were broken. He also observed that he has air only for 3 minutes. He also noticed that he possessed a ...
Teachers` Manual - Amundsen High School
... Sun's path across the sky changes with seasons The Ecliptic: The sun path across the background sky. High in Summer, low in winter Stars visible near Sun before dawn and after dusk change during year. Sun's shifts its position on celestial sphere with respect to the stars Sun's path = Eclipt ...
... Sun's path across the sky changes with seasons The Ecliptic: The sun path across the background sky. High in Summer, low in winter Stars visible near Sun before dawn and after dusk change during year. Sun's shifts its position on celestial sphere with respect to the stars Sun's path = Eclipt ...
chapter 26 instructor notes
... bluer in colour than isolated galaxies, presumably because of the presence of recently-created hot young stars. Larson and Tinsley (1972) argued that the tidal interaction with another galaxy has induced star formation, although the resulting excess luminosity is hidden behind obscuring clouds of ga ...
... bluer in colour than isolated galaxies, presumably because of the presence of recently-created hot young stars. Larson and Tinsley (1972) argued that the tidal interaction with another galaxy has induced star formation, although the resulting excess luminosity is hidden behind obscuring clouds of ga ...
Here
... table in front of the room and look at its position against the back wall as you walk by. In most practical applications you will have to change your position to make use of ...
... table in front of the room and look at its position against the back wall as you walk by. In most practical applications you will have to change your position to make use of ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.