Automated Detection and Analysis of Meteor Events Using Nightly
... South Pole at -90°. After finding the stars’ coordinates, I compare it to a star catalog and take the closest known bright star compared to the event star. To find the stars the program uses dbfind, which allows the program to set parameters to find the known stars. Each search window was set to a ± ...
... South Pole at -90°. After finding the stars’ coordinates, I compare it to a star catalog and take the closest known bright star compared to the event star. To find the stars the program uses dbfind, which allows the program to set parameters to find the known stars. Each search window was set to a ± ...
supplemental educational materials PDF
... • There are five constellations that are very close to the North Star. This means that they are visible in the northern sky all year long. These include: Ursa Major, the Great Bear; Ursa Minor, the Small Bear; Draco, the Dragon; Cassiopeia, the Queen of Ethiopia; and Cepheus, the King of Ethiopia. • ...
... • There are five constellations that are very close to the North Star. This means that they are visible in the northern sky all year long. These include: Ursa Major, the Great Bear; Ursa Minor, the Small Bear; Draco, the Dragon; Cassiopeia, the Queen of Ethiopia; and Cepheus, the King of Ethiopia. • ...
Stars change over their life cycles.
... hour (500 mi/h) would travel around Earth’s equator in about two days. If you could travel around the Sun’s equator at the same speed, the trip would take more than seven months. ...
... hour (500 mi/h) would travel around Earth’s equator in about two days. If you could travel around the Sun’s equator at the same speed, the trip would take more than seven months. ...
November - LVAstronomy.com
... Fred Rayworth: LVAS Vice President and AL Coordinator from Nevada The first time I observed NGC-7789 was on October 2, 1997 at the Okie-Tex star party at Lake Murray, Oklahoma. At an altitude of 872 feet, it was warm, dry (37% humidity according to Jason Ware) and a slight breeze. Using my home-bui ...
... Fred Rayworth: LVAS Vice President and AL Coordinator from Nevada The first time I observed NGC-7789 was on October 2, 1997 at the Okie-Tex star party at Lake Murray, Oklahoma. At an altitude of 872 feet, it was warm, dry (37% humidity according to Jason Ware) and a slight breeze. Using my home-bui ...
Chapter 13 The Life of a Star The Life of a Star Mass Is the Key The
... History of Stellar Evolution Theories • Aristotle wrote more than 2000 years ago that stars are heated by their passage through the heavens, but never considered that they evolved • In the 18th century, Immanuel Kant described the Sun as a fiery sphere, formed from the gases gravitated to the center ...
... History of Stellar Evolution Theories • Aristotle wrote more than 2000 years ago that stars are heated by their passage through the heavens, but never considered that they evolved • In the 18th century, Immanuel Kant described the Sun as a fiery sphere, formed from the gases gravitated to the center ...
Stars III The Hertzsprung
... through interstellar clouds (explaining the reddened stars at the edge of the cloud) • If there is enough dust, everything can be blocked, causing dark patches • It is not a coincidence that there are young, blue stars near this dark cloud • Stars are forming in these dense clouds of dust and gas ...
... through interstellar clouds (explaining the reddened stars at the edge of the cloud) • If there is enough dust, everything can be blocked, causing dark patches • It is not a coincidence that there are young, blue stars near this dark cloud • Stars are forming in these dense clouds of dust and gas ...
Chapter 13
... • Most luminous yellow giants on an H-R diagram are aging high-mass stars • Less luminous yellow giants are low-mass stars that have completed their first red giant stage • Regardless of mass, many yellow giants pulsate in size and luminosity ...
... • Most luminous yellow giants on an H-R diagram are aging high-mass stars • Less luminous yellow giants are low-mass stars that have completed their first red giant stage • Regardless of mass, many yellow giants pulsate in size and luminosity ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... elements to burn at even higher temperatures, and causing sun-like stars to grow into red giants. Even though the cores of both hydrogen-burning and helium-burning stars have consistent, steady energy outputs, our sun's overall brightness varies by just ~0.1%, while red giants can have their brightn ...
... elements to burn at even higher temperatures, and causing sun-like stars to grow into red giants. Even though the cores of both hydrogen-burning and helium-burning stars have consistent, steady energy outputs, our sun's overall brightness varies by just ~0.1%, while red giants can have their brightn ...
File
... The Helix Nebula (see figure, bottom) is so close to us that it covers about half the apparent diameter in the sky as the full moon, though it is much fainter. Each planetary-nebula stage in the life of a Sun-like star lasts only about 50,000 years; after that time, the nebula spreads out and fades ...
... The Helix Nebula (see figure, bottom) is so close to us that it covers about half the apparent diameter in the sky as the full moon, though it is much fainter. Each planetary-nebula stage in the life of a Sun-like star lasts only about 50,000 years; after that time, the nebula spreads out and fades ...
AST1100 Lecture Notes
... just enough information in order to be able to use it for the estimation of distances. In the lectures on stellar evolution, you will get more details. There are many different versions of the HR-diagram. In this lecture we will study the HR-diagram as a plot with surface temperature of stars on the ...
... just enough information in order to be able to use it for the estimation of distances. In the lectures on stellar evolution, you will get more details. There are many different versions of the HR-diagram. In this lecture we will study the HR-diagram as a plot with surface temperature of stars on the ...
Hypervelocity Globular: A beacon of merging clusters Oleg Gnedin with Alexey Vikhlinin
... for BH mass ratio 1:10 to 1:3 To achieve the observed offset of 2300 km/s, HVGC needs to have come within d = 2-6 pc of M87 BH To survive tidal field of BH at distance d, HVGC needs to have minimum average density 4e9 Msun/pc3 d(pc)-3 (Misgeld & Hilker 2011) ...
... for BH mass ratio 1:10 to 1:3 To achieve the observed offset of 2300 km/s, HVGC needs to have come within d = 2-6 pc of M87 BH To survive tidal field of BH at distance d, HVGC needs to have minimum average density 4e9 Msun/pc3 d(pc)-3 (Misgeld & Hilker 2011) ...
PPT - Yale University
... The assumed ‘viscosity’ is problematic because all known transport mechanisms depend in some way on external circumstances (e.g. ionization). A very large disk is needed and transport times are very long (103 to 106 rotation periods) because disks are fragile and cannot sustain a large torque. ...
... The assumed ‘viscosity’ is problematic because all known transport mechanisms depend in some way on external circumstances (e.g. ionization). A very large disk is needed and transport times are very long (103 to 106 rotation periods) because disks are fragile and cannot sustain a large torque. ...
DSLR Photometry
... Des says in theory it is advisable to also construct master flat field frames in order to remove the effects of the edge distortions of lens. Des has found, however, that the field of view of a DSLR is so wide that a flat field is not required, if you are using high quality lenses, provided the targ ...
... Des says in theory it is advisable to also construct master flat field frames in order to remove the effects of the edge distortions of lens. Des has found, however, that the field of view of a DSLR is so wide that a flat field is not required, if you are using high quality lenses, provided the targ ...
12-1 MAIN-SEQUENCE STARS
... because of internal processes and not because they are member of eclipsing binaries. The Cepheid and RR Lyrae variable stars provide evidence that stars evolve. These intrinsic variable stars lie in an instability strip in the H–R diagram; they contain a layer in their ...
... because of internal processes and not because they are member of eclipsing binaries. The Cepheid and RR Lyrae variable stars provide evidence that stars evolve. These intrinsic variable stars lie in an instability strip in the H–R diagram; they contain a layer in their ...
Lecture6
... clumpy, cool, dense clouds called `dark nebulae’ in or near molecular clouds (cool clouds with CO and H2 molecules). Bursts of protostar formation takes place when these dense regions are hit by high speed (`supersonic’, meaning speed faster than the sound speed) winds from a near-by supernova explo ...
... clumpy, cool, dense clouds called `dark nebulae’ in or near molecular clouds (cool clouds with CO and H2 molecules). Bursts of protostar formation takes place when these dense regions are hit by high speed (`supersonic’, meaning speed faster than the sound speed) winds from a near-by supernova explo ...
holiday lights - Denver Astronomical Society
... and just west of the waning Milky Way in Taurus. Greenish Uranus will be west of the meridian straight below the eastern side of the Great Square of Pegasus—almost exactly one square’s depth. Cetus the Sea Monster, often depicted as a whale, pokes his unassuming polygon head above the celestial equa ...
... and just west of the waning Milky Way in Taurus. Greenish Uranus will be west of the meridian straight below the eastern side of the Great Square of Pegasus—almost exactly one square’s depth. Cetus the Sea Monster, often depicted as a whale, pokes his unassuming polygon head above the celestial equa ...
pdf file with complementary illustrations / animations
... with a puzzle. How did they settle into orbits 100 times closer to their host stars than our own Jupiter is to the Sun? An international team of astronomers has announced this week1 the discovery of a newborn hot Jupiter, orbiting an infant sun — only 2 million years old, the stellar equivalent of a ...
... with a puzzle. How did they settle into orbits 100 times closer to their host stars than our own Jupiter is to the Sun? An international team of astronomers has announced this week1 the discovery of a newborn hot Jupiter, orbiting an infant sun — only 2 million years old, the stellar equivalent of a ...
Stellar Winds and Mass Loss
... The advantage is that they will from at large distances from the star, 104R*. CO J=1→0 lines are typically used The velocities at this range are much lower than the escape speed of the star, but they still indicate mass loss Knapp and Morris derived an expression for the CO mass loss rate in 1985 ...
... The advantage is that they will from at large distances from the star, 104R*. CO J=1→0 lines are typically used The velocities at this range are much lower than the escape speed of the star, but they still indicate mass loss Knapp and Morris derived an expression for the CO mass loss rate in 1985 ...
Celestial Distances
... Summary (cont’d) For distant stars that are not variable and don’t have a nearby variable star, use the temperature - luminosity relation of the H-R diagram. Does require some work to determine if the star is main sequence, dwarf, or giant. Later we will see the use of red shift and supernovae ...
... Summary (cont’d) For distant stars that are not variable and don’t have a nearby variable star, use the temperature - luminosity relation of the H-R diagram. Does require some work to determine if the star is main sequence, dwarf, or giant. Later we will see the use of red shift and supernovae ...
Distances of the Stars
... Luminosity Distance Relation A star’s luminosity, apparent brightness, and distance from the earth are related through the inverse square law. If any two of these quantities are known, the third can be calculated. ...
... Luminosity Distance Relation A star’s luminosity, apparent brightness, and distance from the earth are related through the inverse square law. If any two of these quantities are known, the third can be calculated. ...
The Final Flight of Atlantis - Westchester Amateur Astronomers
... inexpensive Meade Electronic Eyepiece, to shoot this image of the Sun. The scope was mounted on a Tech200/Giro-2 "track and train" drive. He captured a one-minute avi file using Deepsky Imaging on a netbook with an inexpensive USB-video adaptor. Larry ran the avi through Registax 5 to stack the imag ...
... inexpensive Meade Electronic Eyepiece, to shoot this image of the Sun. The scope was mounted on a Tech200/Giro-2 "track and train" drive. He captured a one-minute avi file using Deepsky Imaging on a netbook with an inexpensive USB-video adaptor. Larry ran the avi through Registax 5 to stack the imag ...
Stellar Evolution: the Death of Stars
... • AGB star is also called Carbon Star • AGB star has strong stellar wind, losing mass at very high rate • AGB star enriches interstellar medium with carbon, and some oxygen and nitrogen • Most of carbons in our body are likely from earlygeneration AGB stars nearby ...
... • AGB star is also called Carbon Star • AGB star has strong stellar wind, losing mass at very high rate • AGB star enriches interstellar medium with carbon, and some oxygen and nitrogen • Most of carbons in our body are likely from earlygeneration AGB stars nearby ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.