3D maps of the local interstellar medium: searching for the imprints
... one, such as a GRB. The former scenario naturally explains the inclination, while the latter is better in that it accounts for the expanding and rotating belt. Developing further the collision scenario, Olano (2001) modeled a 400 pc wide supercloud (SC) of 2 107 solar masses, initially moving ballis ...
... one, such as a GRB. The former scenario naturally explains the inclination, while the latter is better in that it accounts for the expanding and rotating belt. Developing further the collision scenario, Olano (2001) modeled a 400 pc wide supercloud (SC) of 2 107 solar masses, initially moving ballis ...
How Big is the Universe
... Andromeda. One particular type of star allowed him to calculate its distance. He showed that the Andromeda Nebula was far outside our Milky Way Galaxy. Hubble realized that many of the objects that astronomers called nebulae were not actually clouds of gas. They were what we now call galaxies – a co ...
... Andromeda. One particular type of star allowed him to calculate its distance. He showed that the Andromeda Nebula was far outside our Milky Way Galaxy. Hubble realized that many of the objects that astronomers called nebulae were not actually clouds of gas. They were what we now call galaxies – a co ...
Neutron Stars
... Periods shorter than this do not exist (such as in the previous calculation) because the object would have to rotate so fast it would overcome gravity and fly apart. ...
... Periods shorter than this do not exist (such as in the previous calculation) because the object would have to rotate so fast it would overcome gravity and fly apart. ...
Black Hole Sun: A Total Eclipse Free Public Lecture about Eclipses
... wavelength, for example, as on Oct 1? A. The stars move in the same direction at the same speed on Oct 1. B. The Doppler effect is insensitive to the orbital motion on Oct 1. C. One star hides the other on Oct 1. ...
... wavelength, for example, as on Oct 1? A. The stars move in the same direction at the same speed on Oct 1. B. The Doppler effect is insensitive to the orbital motion on Oct 1. C. One star hides the other on Oct 1. ...
The Missing Mass
... For a group of objects, there always must be balance between gravity and velocity. Too little velocity, and gravity takes over, making the cluster smaller. Too much velocity, and the objects escape the group’s gravity, causing the group to evaporate. ...
... For a group of objects, there always must be balance between gravity and velocity. Too little velocity, and gravity takes over, making the cluster smaller. Too much velocity, and the objects escape the group’s gravity, causing the group to evaporate. ...
H. Other Methods of Determining Stellar Distances
... velocity); they wander about through the Galaxy. • If we assume that all stars have about the same space velocity (risky!), then those with the most apparent motion against the background of very remote stars are probably the closest. • This motion may be across the sky (proper motion); it may be de ...
... velocity); they wander about through the Galaxy. • If we assume that all stars have about the same space velocity (risky!), then those with the most apparent motion against the background of very remote stars are probably the closest. • This motion may be across the sky (proper motion); it may be de ...
Night Sky
... If you find Polaris, you know which north is! drinking gourd story: in the bad old days, slavery in this country but slaves would escape and seek freedom in north and an Underground Railroad grew up to help them but can’t take highway, no maps, traveling in hostile territory, --> makes sense to move ...
... If you find Polaris, you know which north is! drinking gourd story: in the bad old days, slavery in this country but slaves would escape and seek freedom in north and an Underground Railroad grew up to help them but can’t take highway, no maps, traveling in hostile territory, --> makes sense to move ...
chapter 14 - Astronomy
... 4. A brown dwarf (GL229B) was first seen in 1994. Its mass is between 20 and 50 times that of Jupiter. 5. Brown dwarfs have been discovered orbiting stars, many of them seem to be isolated. Their formation is most likely similar to that of a normal isolated star but they could also be the byproduct ...
... 4. A brown dwarf (GL229B) was first seen in 1994. Its mass is between 20 and 50 times that of Jupiter. 5. Brown dwarfs have been discovered orbiting stars, many of them seem to be isolated. Their formation is most likely similar to that of a normal isolated star but they could also be the byproduct ...
Globular Clusters
... to internal and external dynamical interactions, they represent an ideal workbench to study STELLAR DYNAMICS and to test most exquisite theoretical dynamical models. If studied as a global system, GCs constitute fossil tracers of the dynamical and chemical evolution of the parent galaxy and can be u ...
... to internal and external dynamical interactions, they represent an ideal workbench to study STELLAR DYNAMICS and to test most exquisite theoretical dynamical models. If studied as a global system, GCs constitute fossil tracers of the dynamical and chemical evolution of the parent galaxy and can be u ...
Distance
... Ques4ons • How much does the apparent brightness of stars we see in the sky vary? Why? • Stars have different colors? So is the amount of light at different wavelengths the same? • Can we tell the difference between a very luminous star that is far away and in intrinsically low luminosity st ...
... Ques4ons • How much does the apparent brightness of stars we see in the sky vary? Why? • Stars have different colors? So is the amount of light at different wavelengths the same? • Can we tell the difference between a very luminous star that is far away and in intrinsically low luminosity st ...
SIERRA STAR GAZERS
... This constellation is easily found just east of the scorpion’s stinger. While Mythology identifies it as an archer, we see it as an obvious teapot with steam (the Milky Way) drifting upward from the spout. We’ll observe some of the magnificent objects in the vicinity of the teapot, then pick up the ...
... This constellation is easily found just east of the scorpion’s stinger. While Mythology identifies it as an archer, we see it as an obvious teapot with steam (the Milky Way) drifting upward from the spout. We’ll observe some of the magnificent objects in the vicinity of the teapot, then pick up the ...
Piscataway High School - Piscataway Township Schools
... Explain ellipse geometry and eccentricity of planetary orbits Apply Kepler’s three Laws of Planetary Motion Name the major regions and differences between parts of the electromagnetic spectrum Explain how reflecting and refracting, radio, and other types of telescopes work. ...
... Explain ellipse geometry and eccentricity of planetary orbits Apply Kepler’s three Laws of Planetary Motion Name the major regions and differences between parts of the electromagnetic spectrum Explain how reflecting and refracting, radio, and other types of telescopes work. ...
constellations - Otterbein University
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
Define the following terms in the space provided
... many asteroids and comets. Our solar system could be considered 40 AU in radius, but the comets extend much farther out. Stars are much larger than planets. Our Sun is over 100 times the radius of the Earth. There are stars some what smaller than the Sun and stars that are vastly larger than the Sun ...
... many asteroids and comets. Our solar system could be considered 40 AU in radius, but the comets extend much farther out. Stars are much larger than planets. Our Sun is over 100 times the radius of the Earth. There are stars some what smaller than the Sun and stars that are vastly larger than the Sun ...
Our Local Group of Galaxies
... • Finding such objects is very difficult as you need deep photometry (to get beyond the Galaxy) over effectively the entire sky - a task for LSST probably. ...
... • Finding such objects is very difficult as you need deep photometry (to get beyond the Galaxy) over effectively the entire sky - a task for LSST probably. ...
AST1100 Lecture Notes
... stars range from 0.08M⊙ for the least massive stars up to about 100M⊙ for the most massive stars. We will later discuss theoretical arguments explaining why there is a lower and an upper limit of star masses. We will now start to look at the evolution of stars, from birth to death. Stars start out a ...
... stars range from 0.08M⊙ for the least massive stars up to about 100M⊙ for the most massive stars. We will later discuss theoretical arguments explaining why there is a lower and an upper limit of star masses. We will now start to look at the evolution of stars, from birth to death. Stars start out a ...
Watching Galaxies Form Near the Beginning of Time
... • Chemistry of stellar surface reflects initial chemical makeup until late in its lifespan • Stars’ orbits change only very slowly over time • Makeup and motions of stars preserve a detailed record of our galaxy’s history • Early stars formed with low heavy-element abundances and in a nearly spheric ...
... • Chemistry of stellar surface reflects initial chemical makeup until late in its lifespan • Stars’ orbits change only very slowly over time • Makeup and motions of stars preserve a detailed record of our galaxy’s history • Early stars formed with low heavy-element abundances and in a nearly spheric ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.