Postgraduate Seminar Series Small Angle Neutron scattering on the anisotropic superconductor CaC6.
... A Cataclysmic Variable (CV) is a binary star system where two stars orbit each other around their centre of mass. The primary is the more massive star of the system and will have evolved into a white dwarf (compact degenerate star), while the secondary is still a main sequence star (fusing hydrogen) ...
... A Cataclysmic Variable (CV) is a binary star system where two stars orbit each other around their centre of mass. The primary is the more massive star of the system and will have evolved into a white dwarf (compact degenerate star), while the secondary is still a main sequence star (fusing hydrogen) ...
astrocoursespring2012lec5-1-1
... appear smaller and fainter. When a telescope probes about 5 billion light years into look-back time, it can detect only the brightest galaxies, giant, elliptical galaxies – because spiral galaxies similar to the Milky Way are too dim to be seen at that distance ...
... appear smaller and fainter. When a telescope probes about 5 billion light years into look-back time, it can detect only the brightest galaxies, giant, elliptical galaxies – because spiral galaxies similar to the Milky Way are too dim to be seen at that distance ...
LAB #6 - GEOCITIES.ws
... regions. Thus a high B magnitude compared to the star’s V magnitude means that an object is giving off very LITTLE blue light compared to the total amount of light it is giving off (recall that magnitudes are a “backwards” scale). If this is the case, the (B-V) index is a POSITIVE number, and it ind ...
... regions. Thus a high B magnitude compared to the star’s V magnitude means that an object is giving off very LITTLE blue light compared to the total amount of light it is giving off (recall that magnitudes are a “backwards” scale). If this is the case, the (B-V) index is a POSITIVE number, and it ind ...
Stellar Evolution Lab
... Stage 1- Stars are born in clouds of gas and dust called Nebulas. Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will ...
... Stage 1- Stars are born in clouds of gas and dust called Nebulas. Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will ...
How Is a Star`s Color Related to Its Temperature? - d
... On a clear night you have surely noticed that some stars are brighter than others. But stars also have different colors. Rigel is blue, and Betelgeuse is red. Capella and our sun are yellow. In this activity you will make your own HertzsprungRussell diagram. You will see how star brightness, color, ...
... On a clear night you have surely noticed that some stars are brighter than others. But stars also have different colors. Rigel is blue, and Betelgeuse is red. Capella and our sun are yellow. In this activity you will make your own HertzsprungRussell diagram. You will see how star brightness, color, ...
Introduction to Galaxies and Cosmology Exercises 2
... b) What would the period of the Earth’s revolution around the Sun be? 7. For every mass m which is swallowed by a black hole (via an accretion disk, say), an amount of energy νmc2 is liberated, where ν is the efficiency of the process. A value of ν = 0.1 is realistic. At what rate Ṁ would a superma ...
... b) What would the period of the Earth’s revolution around the Sun be? 7. For every mass m which is swallowed by a black hole (via an accretion disk, say), an amount of energy νmc2 is liberated, where ν is the efficiency of the process. A value of ν = 0.1 is realistic. At what rate Ṁ would a superma ...
Nights of the Heavenly G With
... the Pleiades and the Hyades. How do you know that the Hyades is an older cluster just by looking at it? There are at least two other good clusters in Taurus, NGC-1647 and NGC-1746. Have you ever observed them? 8. Finally, enjoy the sweep down though Orion's belt. Your binoculars will show that thes ...
... the Pleiades and the Hyades. How do you know that the Hyades is an older cluster just by looking at it? There are at least two other good clusters in Taurus, NGC-1647 and NGC-1746. Have you ever observed them? 8. Finally, enjoy the sweep down though Orion's belt. Your binoculars will show that thes ...
Chapter 28 Stars and Galaxies Reading Guide
... 16. We are not able to visit distant stars, yet we can determine how far away they are. How do parallax and math help us do this? A nearby star's apparent movement against the background of more distant stars as the Earth revolves around the Sun is referred to as stellar parallax. Nearby objects hav ...
... 16. We are not able to visit distant stars, yet we can determine how far away they are. How do parallax and math help us do this? A nearby star's apparent movement against the background of more distant stars as the Earth revolves around the Sun is referred to as stellar parallax. Nearby objects hav ...
The Ultraluminous X-ray Source in Holmberg IX and its Environment
... IX, a dwarf galaxy near M81. The ULX has an average X-ray luminosity of some 1040 erg/s. It is located in a huge (400pc × 300pc) ionized nebula being much larger than normal supernova remnants. From the observed emission lines (widths and ratios) we find that the structure is due to collisional excit ...
... IX, a dwarf galaxy near M81. The ULX has an average X-ray luminosity of some 1040 erg/s. It is located in a huge (400pc × 300pc) ionized nebula being much larger than normal supernova remnants. From the observed emission lines (widths and ratios) we find that the structure is due to collisional excit ...
Chapter 12
... stars. The preceding chapter told us how stars form, and the next chapter tells us how stars die. This chapter is the heart of the story—how stars live. As always, we accept nothing at face value. We expect theory to be supported by evidence. We expect carefully constructed models to help us underst ...
... stars. The preceding chapter told us how stars form, and the next chapter tells us how stars die. This chapter is the heart of the story—how stars live. As always, we accept nothing at face value. We expect theory to be supported by evidence. We expect carefully constructed models to help us underst ...
Ordinary Stars - Edgewood High School
... of 10,000 K and another a temperature of 5,000 K, how much more energy does the hotter star put out? ...
... of 10,000 K and another a temperature of 5,000 K, how much more energy does the hotter star put out? ...
Using a Planisphere - Amateur Observers` Society of New York
... Use the planisphere to plan your night of observing. You won’t find M13, the compact globular cluster in Hercules, at 8 PM on January 1st, but you will easily find M45, the spectacular open cluster in Taurus. Set your planisphere for the correct date and time using your red flashlight so your eyes s ...
... Use the planisphere to plan your night of observing. You won’t find M13, the compact globular cluster in Hercules, at 8 PM on January 1st, but you will easily find M45, the spectacular open cluster in Taurus. Set your planisphere for the correct date and time using your red flashlight so your eyes s ...
Magnitude scale theory
... The magnitudes of stars - theory How bright a star looks is given by its apparent magnitude. This is different from its absolute magnitude. The absolute magnitude of a star is defined as the apparent magnitude that it would have if placed at a distance of 10 parsecs from the Earth. Consider two star ...
... The magnitudes of stars - theory How bright a star looks is given by its apparent magnitude. This is different from its absolute magnitude. The absolute magnitude of a star is defined as the apparent magnitude that it would have if placed at a distance of 10 parsecs from the Earth. Consider two star ...
Galactic astronomy - Sierra College Astronomy Home Page
... infrared; – The most conspicuous type of bright emission nebula are HII regions. ...
... infrared; – The most conspicuous type of bright emission nebula are HII regions. ...
Mapping the Stars
... • It is an object that is so massive that even light cannot escape its gravity. • They form sometimes from the leftovers of a supernova that has collapsed. • How are black holes found by astronomers? • Sometimes gas or dust from a nearby star will spiral into the black hole and give off X rays to he ...
... • It is an object that is so massive that even light cannot escape its gravity. • They form sometimes from the leftovers of a supernova that has collapsed. • How are black holes found by astronomers? • Sometimes gas or dust from a nearby star will spiral into the black hole and give off X rays to he ...
Integrative Studies 410 Our Place in the Universe
... tend to be concentrated in the spiral arms • Radio frequency observations reveal the distribution of hydrogen (atomic) and molecular clouds ...
... tend to be concentrated in the spiral arms • Radio frequency observations reveal the distribution of hydrogen (atomic) and molecular clouds ...
Measuring the Stars
... mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space…” To be fair though, when confronted by the sheer enormity of the distances between the stars, better minds than the one responsible for the Guide's introduction have falte ...
... mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space…” To be fair though, when confronted by the sheer enormity of the distances between the stars, better minds than the one responsible for the Guide's introduction have falte ...
Outline - March 16, 2010 Interstellar Medium (ISM) Why should you
... HST Image of Beta Pictoris: note star itself has been blocked out ...
... HST Image of Beta Pictoris: note star itself has been blocked out ...
Review Questions for Chp 2
... 34. red shift in all galaxies moving away from each other 35. 13.7 billion years. 36. Refracting 37. Copernicus 38. 1500 yrs 39. Mass 40. Red 41. False 42. 3.0 x 108 meters/second 43. to magnify distant images 44. gamma ray, x-ray, UV ray 45. Gamma 46. Always present in the sky and Polaris is an ex ...
... 34. red shift in all galaxies moving away from each other 35. 13.7 billion years. 36. Refracting 37. Copernicus 38. 1500 yrs 39. Mass 40. Red 41. False 42. 3.0 x 108 meters/second 43. to magnify distant images 44. gamma ray, x-ray, UV ray 45. Gamma 46. Always present in the sky and Polaris is an ex ...
Life Cycle of Stars
... 2. If one of those clouds of dust and gas is massive enough, it’s own gravity causes it to start to collapse so it folds in on itself towards the center of that cloud it gets denser and denser and hotter and hotter 3. Eventually, the particles of that the gas and the dust are made of are brought so ...
... 2. If one of those clouds of dust and gas is massive enough, it’s own gravity causes it to start to collapse so it folds in on itself towards the center of that cloud it gets denser and denser and hotter and hotter 3. Eventually, the particles of that the gas and the dust are made of are brought so ...
Summer Triangle (Winter in the south hemisphere) Lyra
... The tale of the Lyre then passes to Orpheus. Apollo became entranced by the songs of the great musician Orpheus and gave him the instrument so that Orpheus could accompany his words. Orpheus is said to have been so grateful for the instrument that he would often seek a high mountain before sunrise, ...
... The tale of the Lyre then passes to Orpheus. Apollo became entranced by the songs of the great musician Orpheus and gave him the instrument so that Orpheus could accompany his words. Orpheus is said to have been so grateful for the instrument that he would often seek a high mountain before sunrise, ...
Astrophysics
... If galaxies are moving away from us, they must have been closer together millions of years ago. If Hubble’s graph is used, the origin of this movement = approx. 10 000 million years old ...
... If galaxies are moving away from us, they must have been closer together millions of years ago. If Hubble’s graph is used, the origin of this movement = approx. 10 000 million years old ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.