Reach_for_the_stars_final_questions.doc
... _____________________________________________________________________________________________________ 5. What does the H_R diagram plot? (2 pt) _____________________________________________________________________________________________________ 6. Antares emits a large portion of its energy in what ...
... _____________________________________________________________________________________________________ 5. What does the H_R diagram plot? (2 pt) _____________________________________________________________________________________________________ 6. Antares emits a large portion of its energy in what ...
Superwind - The University of Sydney
... The team includes scientists from the Universities of Manchester, Sydney, ParisDiderot, Oxford and Macquarie University, New South Wales. They used the Very Large Telescope in Chile, operated by the European Southern Observatory. At the resolution used by the scientists, one could, from the UK, dist ...
... The team includes scientists from the Universities of Manchester, Sydney, ParisDiderot, Oxford and Macquarie University, New South Wales. They used the Very Large Telescope in Chile, operated by the European Southern Observatory. At the resolution used by the scientists, one could, from the UK, dist ...
Synthetic color-magnitude diagrams: the ingredients
... two stellar masses and its luminosity depends on the mass ratio q=M2/M1 ü The equal-mass binaries form a sequence running almost parallel to the MS, and ~0.75mag brighter; ü When the masses of the two components are different, the binary will appear redder and brighter than the primary and popul ...
... two stellar masses and its luminosity depends on the mass ratio q=M2/M1 ü The equal-mass binaries form a sequence running almost parallel to the MS, and ~0.75mag brighter; ü When the masses of the two components are different, the binary will appear redder and brighter than the primary and popul ...
STEM for TY Teachers
... diameter is about 100 times bigger than it was originally, and has become cooler (the surface temperature is under 6,500 K). They are frequently orange in colour. Betelgeuse is a red giant. It is about 20 times as massive as the Sun, but about 14,000 times brighter than the Sun, and about ...
... diameter is about 100 times bigger than it was originally, and has become cooler (the surface temperature is under 6,500 K). They are frequently orange in colour. Betelgeuse is a red giant. It is about 20 times as massive as the Sun, but about 14,000 times brighter than the Sun, and about ...
Astronomy Unit 4 Galaxies
... 34. The redshift caused by the expansion of the universe. ______________________ 35. Hubble’s Constant tells astronomers how _______________ the universe is expanding. 36. The approximate age of the universe determined by using Hubble’s Constant. __________________________________ 37. The distribut ...
... 34. The redshift caused by the expansion of the universe. ______________________ 35. Hubble’s Constant tells astronomers how _______________ the universe is expanding. 36. The approximate age of the universe determined by using Hubble’s Constant. __________________________________ 37. The distribut ...
3.6 spectral classes
... Nearby stars appear to shift back and forth relative to more distant stars as Earth revolves around the Sun. The apparent change in a star’s position observed when the star is sighted from opposite sides of Earth’s orbit is called stellar parallax ...
... Nearby stars appear to shift back and forth relative to more distant stars as Earth revolves around the Sun. The apparent change in a star’s position observed when the star is sighted from opposite sides of Earth’s orbit is called stellar parallax ...
Document
... a. Which star is the hottest? Achernar Coolest? GL 725A b. Which star looks most red? GL 725A Most blue? Achernar c. Which star is the most luminous? Canopus Least luminous? GL 725A d. Which star appears the brightest? Canopus Faintest? GL 725A e. Which star’s spectrum shows the strongest Balmer lin ...
... a. Which star is the hottest? Achernar Coolest? GL 725A b. Which star looks most red? GL 725A Most blue? Achernar c. Which star is the most luminous? Canopus Least luminous? GL 725A d. Which star appears the brightest? Canopus Faintest? GL 725A e. Which star’s spectrum shows the strongest Balmer lin ...
Lecture10
... To determine stellar mases we rely on binary star systems. As seen from Earth, the two stars that make up this binary system are separated by less than 1/3 arcsecond. For simplicity, the diagram shows one star as remaining stationary; in reality, both stars move around their common center of mass ...
... To determine stellar mases we rely on binary star systems. As seen from Earth, the two stars that make up this binary system are separated by less than 1/3 arcsecond. For simplicity, the diagram shows one star as remaining stationary; in reality, both stars move around their common center of mass ...
jodrell_bank_wms - Faulkes Telescope Project
... green and red filters in turn. The three images are then combined to produce the colour image. ...
... green and red filters in turn. The three images are then combined to produce the colour image. ...
Star formation jeopardy
... Type G2 star, middle of HR diagram-average size and luminosity, end of life will be white dwarf, only known star to support a planet with life. Why is our star (the sun) frequently referred to as an “average” star? Compare the important physical characteristics of the Sun with the most common types ...
... Type G2 star, middle of HR diagram-average size and luminosity, end of life will be white dwarf, only known star to support a planet with life. Why is our star (the sun) frequently referred to as an “average” star? Compare the important physical characteristics of the Sun with the most common types ...
The Life Cycle of Stars Webquest
... 1. In this webquest, you will learn how to identify stars by their magnitude, color, temperature, and spectral class. 2. You will investigate the process of nuclear fusion explained by Einstein's famous equation E = MC2 and learn how mass in the form of hydrogen atoms is converted to helium and caus ...
... 1. In this webquest, you will learn how to identify stars by their magnitude, color, temperature, and spectral class. 2. You will investigate the process of nuclear fusion explained by Einstein's famous equation E = MC2 and learn how mass in the form of hydrogen atoms is converted to helium and caus ...
chapter9
... absorbed by interstellar clouds Red light can more easily penetrate the cloud, but is still absorbed to some extent ...
... absorbed by interstellar clouds Red light can more easily penetrate the cloud, but is still absorbed to some extent ...
M = 5.5 - The Millstone
... Absolute Magnitude, we must have a measure of the stellar distance (by other means). Absolute magnitude, M, expresses the brightness of a star as it would be if it were placed 10 parsecs away. Since all stars would be placed at the same distance, absolute magnitudes show differences in actual lumino ...
... Absolute Magnitude, we must have a measure of the stellar distance (by other means). Absolute magnitude, M, expresses the brightness of a star as it would be if it were placed 10 parsecs away. Since all stars would be placed at the same distance, absolute magnitudes show differences in actual lumino ...
CONSTELLATION CEPHEUS, KING OF ETHIOPIA Cepheus is a
... Cepheus, King of Aethiopia in Greek mythology. He was deemed worthy of a place in the sky because he was fourth in descent from the nymph Io, one of the loves of Zeus – and having Zeus as a relative was always an advantage when it came to being commemorated among the constellations. It was one of th ...
... Cepheus, King of Aethiopia in Greek mythology. He was deemed worthy of a place in the sky because he was fourth in descent from the nymph Io, one of the loves of Zeus – and having Zeus as a relative was always an advantage when it came to being commemorated among the constellations. It was one of th ...
Document
... system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the faint star of an an unresolved binary system comprising a K ...
... system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the faint star of an an unresolved binary system comprising a K ...
Slide 1
... • What do we mean by a protogalactic cloud? • A. It is a cloud-like halo that surrounds the disks of spiral galaxies • B. It was a term used historically to refer to any galaxy • C. It is a cloud of hydrogen gas that we detect by looking at light from quasars • D. It is a cloud of matter that contra ...
... • What do we mean by a protogalactic cloud? • A. It is a cloud-like halo that surrounds the disks of spiral galaxies • B. It was a term used historically to refer to any galaxy • C. It is a cloud of hydrogen gas that we detect by looking at light from quasars • D. It is a cloud of matter that contra ...
review
... massive stars can continue to transform the nuclei of elements such as carbon, oxygen, etc. into heavier nuclei AND also generate excess energy, up to a limit beyond which no further energy-producing reactions can occur. The element that is produced when this limit is reached is • A. silicon. • B. o ...
... massive stars can continue to transform the nuclei of elements such as carbon, oxygen, etc. into heavier nuclei AND also generate excess energy, up to a limit beyond which no further energy-producing reactions can occur. The element that is produced when this limit is reached is • A. silicon. • B. o ...
Constituents of the Milky Way
... Tens of thousands to a million stars (i.e., the total mass of the cluster is large) Self-gravity strong enough to keep stars from wandering off About 13 billion years old, maybe older ...
... Tens of thousands to a million stars (i.e., the total mass of the cluster is large) Self-gravity strong enough to keep stars from wandering off About 13 billion years old, maybe older ...
Formation of Stars
... Stage 2: The cloud fragments collapse, warming very slowly, and the central density of each clump rises. Eventually the cloud core becomes opaque to UV and optical radiation. At the end of stage 2, the fragments are ~100 times the size of the solar system. Stage 3: The cloud fragment develops a ...
... Stage 2: The cloud fragments collapse, warming very slowly, and the central density of each clump rises. Eventually the cloud core becomes opaque to UV and optical radiation. At the end of stage 2, the fragments are ~100 times the size of the solar system. Stage 3: The cloud fragment develops a ...
Uranometria 2000.0`s Dark Nebulae Database
... observer and a bright nebula or a very dense star field, against which they can be seen silhouetted. Observationally, dark nebulae are among the most difficult deep-sky objects. The Coalsack, near the Southern Cross (Charts 198 and 209), is an example clearly visible to the unaided eye because it ha ...
... observer and a bright nebula or a very dense star field, against which they can be seen silhouetted. Observationally, dark nebulae are among the most difficult deep-sky objects. The Coalsack, near the Southern Cross (Charts 198 and 209), is an example clearly visible to the unaided eye because it ha ...
Astronomy Power Point
... • Brightness = the amount of light stars give off – This depends on its size and temperature – How bright it looks from Earth depends on distance and actual brightness • Apparent magnitude • Absolute magnitude ...
... • Brightness = the amount of light stars give off – This depends on its size and temperature – How bright it looks from Earth depends on distance and actual brightness • Apparent magnitude • Absolute magnitude ...
printer-friendly sample test questions
... Students know the Sun is a medium-sized star located in the Milky Way Galaxy, part of which can be seen as a glowing band of light spanning the clear night sky. W/S Answers to Sample Test Questions 2. C, DOK level 1 3. B, DOK level 1 4. C, DOK level 1 5. D, DOK level 1 6. A, DOK level 2 7. B, DOK le ...
... Students know the Sun is a medium-sized star located in the Milky Way Galaxy, part of which can be seen as a glowing band of light spanning the clear night sky. W/S Answers to Sample Test Questions 2. C, DOK level 1 3. B, DOK level 1 4. C, DOK level 1 5. D, DOK level 1 6. A, DOK level 2 7. B, DOK le ...
Exercise 8
... How accurate were you? Is the criterion or criteria you used a good way to find galaxy distances? ...
... How accurate were you? Is the criterion or criteria you used a good way to find galaxy distances? ...
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.