PHYS3380_102815_bw - The University of Texas at Dallas
... XZ Tauri - young system with two stars orbiting each other - separated by about 6 billion kilometers (about the distance from the Sun to Pluto) - shows bubble of hot, glowing gas extending nearly 96 billion kilometers from this young star system. - appears much broader than the narrow jets seen in o ...
... XZ Tauri - young system with two stars orbiting each other - separated by about 6 billion kilometers (about the distance from the Sun to Pluto) - shows bubble of hot, glowing gas extending nearly 96 billion kilometers from this young star system. - appears much broader than the narrow jets seen in o ...
(BDA) Contribution To Space Weather Investigations
... produce high-speed solar wind streams (HSS). BDA can readily observe the coronal holes at all frequencies as depressions. • When HSS collide with the neighboring slow solar wind, they produce large-scale magnetized plasma structures known as the corotating interaction regions (CIRs). CIRs are respon ...
... produce high-speed solar wind streams (HSS). BDA can readily observe the coronal holes at all frequencies as depressions. • When HSS collide with the neighboring slow solar wind, they produce large-scale magnetized plasma structures known as the corotating interaction regions (CIRs). CIRs are respon ...
Problem 1. Marking scheme Lagrange Point
... 3. The solutions of the problems will be written down only on the answer sheets you receive on your desk. PLEASE WRITE ONLY ON THE PRINTED SIDE OF THE PAPER SHEET. DON’T USE THE REVERSE SIDE. The evaluator will not take into account what is written on the reverse of the answer sheet. 4. The draft sh ...
... 3. The solutions of the problems will be written down only on the answer sheets you receive on your desk. PLEASE WRITE ONLY ON THE PRINTED SIDE OF THE PAPER SHEET. DON’T USE THE REVERSE SIDE. The evaluator will not take into account what is written on the reverse of the answer sheet. 4. The draft sh ...
Testing the strong-field dynamics of general relativity with gravitional
... § But, let's assume that any deviation at large v/c will also show up at small v/c, ...
... § But, let's assume that any deviation at large v/c will also show up at small v/c, ...
134-Notes-a
... (Pro tip: the approximation of a year being approximately π × 107 s is actually not too bad, and it’s very easy to remember). As an order of magnitude estimate, the total distance all cars have ever driven is approximately 10 light years. Even more common than the light year is the parsec. A parsec ...
... (Pro tip: the approximation of a year being approximately π × 107 s is actually not too bad, and it’s very easy to remember). As an order of magnitude estimate, the total distance all cars have ever driven is approximately 10 light years. Even more common than the light year is the parsec. A parsec ...
10 Astrophysics (Option E)
... planets and their moons, asteroids and comets. When modelling gravity, we treated orbits as circular for simplicity, but in fact, the planets have slightly elliptical orbits. An ellipse is a flattened circle with two centres; one of these centres is the Sun. We know that for a satellite to have a ci ...
... planets and their moons, asteroids and comets. When modelling gravity, we treated orbits as circular for simplicity, but in fact, the planets have slightly elliptical orbits. An ellipse is a flattened circle with two centres; one of these centres is the Sun. We know that for a satellite to have a ci ...
Searching for stars in high-velocity clouds
... et al. (2002) have measured a metallicity of ≈0.5 solar for one compact HVC. They say that such a low metallicity is inconsistent with an origin for the gas inside the Milky Way. They suggest that it is associated with the Magellanic Clouds or Stream. If stars are associated with some HVCs then ther ...
... et al. (2002) have measured a metallicity of ≈0.5 solar for one compact HVC. They say that such a low metallicity is inconsistent with an origin for the gas inside the Milky Way. They suggest that it is associated with the Magellanic Clouds or Stream. If stars are associated with some HVCs then ther ...
Slide 1
... (a very short, woefully incomplete list) 1) How else do we know the brightnesses of stars? (how bright is a Cepheid, tests of stellar evolution code, distance to LMC, distance ladder…) 2) We’d like a volume limited sample of stars (in the largest possible volume (Sun’s nearest neighbors are well hid ...
... (a very short, woefully incomplete list) 1) How else do we know the brightnesses of stars? (how bright is a Cepheid, tests of stellar evolution code, distance to LMC, distance ladder…) 2) We’d like a volume limited sample of stars (in the largest possible volume (Sun’s nearest neighbors are well hid ...
32Brightness
... source, where discrete colors are absorbed by atoms – From emission and absorption lines, get composition of objects and also their temperature ...
... source, where discrete colors are absorbed by atoms – From emission and absorption lines, get composition of objects and also their temperature ...
Document
... • This apparent contradiction to our model of stellar evolution is known as the Algol Paradox. © 2004 Pearson Education Inc., publishing as Addison-Wesley ...
... • This apparent contradiction to our model of stellar evolution is known as the Algol Paradox. © 2004 Pearson Education Inc., publishing as Addison-Wesley ...
VISIBLE STARS AS APPARENT OBSERVATIONAL EVIDENCE IN
... the premise that, although the earth's motion in its annual orbit produces some curious and extremely large changes in the case of the planets, it does not cause any similar effects in the case of the fixed stars; they calculate that the stellar sphere would have to be so far away that a fixed star ...
... the premise that, although the earth's motion in its annual orbit produces some curious and extremely large changes in the case of the planets, it does not cause any similar effects in the case of the fixed stars; they calculate that the stellar sphere would have to be so far away that a fixed star ...
Document
... Men and women have looked up at the sky and wondered about the things they see up there for as long as humans have lived on our Earth. Long ago, the Sun and Moon were mysterious objects that could be seen in the day and night. But the planets and stars were even more mysterious probably because they ...
... Men and women have looked up at the sky and wondered about the things they see up there for as long as humans have lived on our Earth. Long ago, the Sun and Moon were mysterious objects that could be seen in the day and night. But the planets and stars were even more mysterious probably because they ...
A-level Physics (Specification A) Teacher guide Teacher guide
... In the first chapter, students see how some of the optics topics they have studied earlier in the specification are applied to the design of telescopes. The relative merits of the two basic methods – reflecting and refracting – are discussed as well as the influence the design of the telescopes has ...
... In the first chapter, students see how some of the optics topics they have studied earlier in the specification are applied to the design of telescopes. The relative merits of the two basic methods – reflecting and refracting – are discussed as well as the influence the design of the telescopes has ...
The Distances to the Stars
... Note that measuring such motions requires the existence of a fixed reference frame, provided by celestial objects whose motions are not detectable. Usually very distant stars will do, but for the most accurate astrometry astronomers use distant galaxies or quasars as reference points. Two thousand y ...
... Note that measuring such motions requires the existence of a fixed reference frame, provided by celestial objects whose motions are not detectable. Usually very distant stars will do, but for the most accurate astrometry astronomers use distant galaxies or quasars as reference points. Two thousand y ...
http://hcs.harvard.edu/~jus/0302/bester.pdf
... On July 4, 1054, a Chinese peasant and amateur astronomer may have looked up from his or her rice field to witness a spectacular stellar event. A bright object appeared suddenly and continued to shine its inexplicable light in the terrestrial sky for almost two years. The remnant of this explosion i ...
... On July 4, 1054, a Chinese peasant and amateur astronomer may have looked up from his or her rice field to witness a spectacular stellar event. A bright object appeared suddenly and continued to shine its inexplicable light in the terrestrial sky for almost two years. The remnant of this explosion i ...
Lecture 1 - Simon P Driver
... Exercise 1 • Calculate what coordinates were overhead at the date//me of your birth? • Path: – Calculate how many days your birthday is awer 21st March = N – Add 12h+24hxN/365.25 = Q Becaus ...
... Exercise 1 • Calculate what coordinates were overhead at the date//me of your birth? • Path: – Calculate how many days your birthday is awer 21st March = N – Add 12h+24hxN/365.25 = Q Becaus ...
Section 4 Formation of the Universe Chapter 19
... • An instrument called a spectrograph is used to break a star’s light into a spectrum. The spectrum of a star will vary depending on which elements are present. ...
... • An instrument called a spectrograph is used to break a star’s light into a spectrum. The spectrum of a star will vary depending on which elements are present. ...
Chapter 15
... Spiral arms appear bright (newly formed, massive stars!) against the dark sky background… but dark (gas and dust in dense, star-forming clouds) against the bright background of the large galaxy Chance coincidence of small spiral galaxy in front of a large background galaxy ...
... Spiral arms appear bright (newly formed, massive stars!) against the dark sky background… but dark (gas and dust in dense, star-forming clouds) against the bright background of the large galaxy Chance coincidence of small spiral galaxy in front of a large background galaxy ...
Chapter 12
... • Type I supernova is a carbon explosion, occurring when too much mass falls onto a white dwarf. • All heavy elements are formed in stellar cores or in supernovae. • Stellar evolution can be understood by observing star clusters. Copyright © 2010 Pearson Education, Inc. ...
... • Type I supernova is a carbon explosion, occurring when too much mass falls onto a white dwarf. • All heavy elements are formed in stellar cores or in supernovae. • Stellar evolution can be understood by observing star clusters. Copyright © 2010 Pearson Education, Inc. ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.