Star Questions 2008 - Fort Thomas Independent Schools
... brightness of the star as seen from 10 parsecs from the Earth, the apparent brightness or magnitude is the brightness of the star as seen from the Earth. 7. What is the H-R Diagram? A graph showing the relationship of star absolute magnitude, luminosity, color, spectral class and temperature. The ma ...
... brightness of the star as seen from 10 parsecs from the Earth, the apparent brightness or magnitude is the brightness of the star as seen from the Earth. 7. What is the H-R Diagram? A graph showing the relationship of star absolute magnitude, luminosity, color, spectral class and temperature. The ma ...
Chapter 17
... A. Because they formed early, not losing their angular momentum. B. Because they formed late out of dark matter. C. Because they were captured after the galaxy evolved. D. Because they were ejected from the spiral arms. 24. We can verify the Sun's estimated position in our galaxy by: A. comparing it ...
... A. Because they formed early, not losing their angular momentum. B. Because they formed late out of dark matter. C. Because they were captured after the galaxy evolved. D. Because they were ejected from the spiral arms. 24. We can verify the Sun's estimated position in our galaxy by: A. comparing it ...
Star Gazing
... region to the right of the sun (spring sunset). Use fist method (arm outstretched) to measure 30o (3 fist lengths) to the right/north of sunset now. • Specific directions on website for what you need to write down. • Turn in the picture with details listed in the ...
... region to the right of the sun (spring sunset). Use fist method (arm outstretched) to measure 30o (3 fist lengths) to the right/north of sunset now. • Specific directions on website for what you need to write down. • Turn in the picture with details listed in the ...
Measuring the Stars
... The spectroscopic parallax calculation can be misleading if the star is not on the main sequence. The width of spectral lines can be used to define luminosity classes: ...
... The spectroscopic parallax calculation can be misleading if the star is not on the main sequence. The width of spectral lines can be used to define luminosity classes: ...
Chapter11
... contracting star and gives it stability? We can understand this phenomenon because we understand some of the basic laws of physics. ...
... contracting star and gives it stability? We can understand this phenomenon because we understand some of the basic laws of physics. ...
The Milky Way Galaxy
... These were found at great distances above and below the plane of the Galaxy, where extinction effects are much less than that found along the Milky Way ...
... These were found at great distances above and below the plane of the Galaxy, where extinction effects are much less than that found along the Milky Way ...
Stars
... shift (lecture 2B) due to its orbital motion. – Double-line – see lines from both stars – Single-line – see only one set of lines ...
... shift (lecture 2B) due to its orbital motion. – Double-line – see lines from both stars – Single-line – see only one set of lines ...
Lecture11
... collapse further, until it becomes ~30% larger than the present Solar radius (but still much less massive). The protostar continues to accrete material from the infalling cloud. ...
... collapse further, until it becomes ~30% larger than the present Solar radius (but still much less massive). The protostar continues to accrete material from the infalling cloud. ...
Spectroscopy, the Doppler Shift and Masses of Binary Stars
... those on the right by 2.6 . The two pairs are separated by about 208 (13,000 AU separation, 0.16 ly between the two pairs, all about 162 ly distant). Each pair would be about as bright as the quarter moon viewed from the other. ...
... those on the right by 2.6 . The two pairs are separated by about 208 (13,000 AU separation, 0.16 ly between the two pairs, all about 162 ly distant). Each pair would be about as bright as the quarter moon viewed from the other. ...
Our Place In the Universe
... Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. Because looking 15 billion lightyears away means looking to a time before the universe existed. ...
... Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. Because looking 15 billion lightyears away means looking to a time before the universe existed. ...
Things to know: This meant as a guide to what you should know. I
... What unusual distortions in time and space are experienced when one moves at speeds near the speed of light? What is gravity in Einstein’s general theory of relativity? What is all matter made of (what are leptons, baryons, quarks)? What is the evidence for the big bang? What is the cosmic microwave ...
... What unusual distortions in time and space are experienced when one moves at speeds near the speed of light? What is gravity in Einstein’s general theory of relativity? What is all matter made of (what are leptons, baryons, quarks)? What is the evidence for the big bang? What is the cosmic microwave ...
Beyond the Solar System Homework for Geology 8
... B. Red giant E. White dwarf 4. The distance to nearby stars can be determined from: A. Fluorescence. D. Stellar parallax. B. Stellar mass. E. Emission nebulae. C. Stellar distances cannot be measured directly 5. Hubble's law states that galaxies are receding from us at a speed that is proportional t ...
... B. Red giant E. White dwarf 4. The distance to nearby stars can be determined from: A. Fluorescence. D. Stellar parallax. B. Stellar mass. E. Emission nebulae. C. Stellar distances cannot be measured directly 5. Hubble's law states that galaxies are receding from us at a speed that is proportional t ...
printer-friendly sample test questions
... Which of the four objects, 1-4, is moving with the fastest speed? A. Object 1 B. Object 2 C. Object 3 D. Object 4 ...
... Which of the four objects, 1-4, is moving with the fastest speed? A. Object 1 B. Object 2 C. Object 3 D. Object 4 ...
RR animation
... • Stars that exhibit pulsation periods on the order of a few days to months, are 4–20 times more massive than the Sun, and up to 100,000 times more luminous. • Cepheids are supergiants of spectral class F6 – K2 and their radii change by several million km (30%) in the process. • There exists a well- ...
... • Stars that exhibit pulsation periods on the order of a few days to months, are 4–20 times more massive than the Sun, and up to 100,000 times more luminous. • Cepheids are supergiants of spectral class F6 – K2 and their radii change by several million km (30%) in the process. • There exists a well- ...
Objectives
... because of their small size – shine for billions of years before they cool completely and become a black dwarf. Sirius B is a white dwarf star shown next to a much brighter companion star, Sirius A. ...
... because of their small size – shine for billions of years before they cool completely and become a black dwarf. Sirius B is a white dwarf star shown next to a much brighter companion star, Sirius A. ...
The Interstellar Medium and Star Formation
... • Most stars form from large clouds of cold gas called Giant Molecular Clouds • Mostly molecular hydrogen H2 – contain other more complex molecules – contain dust which makes them opaque to optical and UV light ...
... • Most stars form from large clouds of cold gas called Giant Molecular Clouds • Mostly molecular hydrogen H2 – contain other more complex molecules – contain dust which makes them opaque to optical and UV light ...
Deep Space Mystery Note Form 2
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
Standard EPS Shell Presentation
... values for absolute brightness using a source of light called a standard ...
... values for absolute brightness using a source of light called a standard ...
Homework #7 (Ch. 19)
... mass, to be able to collapse than a cloud that is spinning slowly or not at all. Rapid spin also causes the cloud to flatten into a disk. Although most of the mass is still concentrated in the center, the material in the disk could form into planets. 4. Chaisson Review and Discussion 19.6 Why do sta ...
... mass, to be able to collapse than a cloud that is spinning slowly or not at all. Rapid spin also causes the cloud to flatten into a disk. Although most of the mass is still concentrated in the center, the material in the disk could form into planets. 4. Chaisson Review and Discussion 19.6 Why do sta ...
Stars: Binary Systems
... Getting the separation, a Although we can measure the period, P, directly, we need to know the distance to get the separation, a. Recall that, d(pc) = 1/P, where P is in arc seconds, which is based on the definition that 1 arc sec is the angular separation of the Earth-Sun system (1 AU ) at a dista ...
... Getting the separation, a Although we can measure the period, P, directly, we need to know the distance to get the separation, a. Recall that, d(pc) = 1/P, where P is in arc seconds, which is based on the definition that 1 arc sec is the angular separation of the Earth-Sun system (1 AU ) at a dista ...
binary stars - El Camino College
... Two-thirds of all stars are part of multiple star systems, where two or more stars are born at the same time from the same gas cloud. Only about 30% of all stars are single, like the Sun. The distances between companion stars ranges from less than 10 million miles (0.1 AU), to over 10,000 AU. Simila ...
... Two-thirds of all stars are part of multiple star systems, where two or more stars are born at the same time from the same gas cloud. Only about 30% of all stars are single, like the Sun. The distances between companion stars ranges from less than 10 million miles (0.1 AU), to over 10,000 AU. Simila ...
HR Diagram Practice Page
... 13. Which star is younger? Van Maanen’s Star or Wolf 359 14. Which star is middle-aged? Tau Ceti or Aldebaran 15. Which star is white dwarf? Procyon A or Procyon B 16. Which star is a red giant? Arcturus or Spica 17. Which star is a main sequence star? Sun or Polaris ...
... 13. Which star is younger? Van Maanen’s Star or Wolf 359 14. Which star is middle-aged? Tau Ceti or Aldebaran 15. Which star is white dwarf? Procyon A or Procyon B 16. Which star is a red giant? Arcturus or Spica 17. Which star is a main sequence star? Sun or Polaris ...
Beyond the Solar System Homework for Geology 8
... B. Red giant E. White dwarf 23. The final stage in the evolution of only the most massive stars is a: A. Black hole C. Black dwarf D. Main-sequence star B. Red giant E. White dwarf 24. A star that spins rapidly and emits pulsating radio waves is called a: A. Black hole C. Black dwarf D. Red giant B. ...
... B. Red giant E. White dwarf 23. The final stage in the evolution of only the most massive stars is a: A. Black hole C. Black dwarf D. Main-sequence star B. Red giant E. White dwarf 24. A star that spins rapidly and emits pulsating radio waves is called a: A. Black hole C. Black dwarf D. Red giant B. ...
PHYS 390 Lecture 31 - Kinematics of galaxies 31
... That the mass enclosed within Ro is about 1011 solar masses is at once both comforting and disturbing. Comforting, in that it is the correct order of magnitude, as the mass of visible matter in the Milky Way is about 1011 solar masses, as previously mentioned. However, not all of this mass lies with ...
... That the mass enclosed within Ro is about 1011 solar masses is at once both comforting and disturbing. Comforting, in that it is the correct order of magnitude, as the mass of visible matter in the Milky Way is about 1011 solar masses, as previously mentioned. However, not all of this mass lies with ...
PHYSICS 113 Practice Questions #2
... b. a small disk of gas and dust surrounding a single star that was recently formed c. a cloud o f gas and du st illuminated by th e light of newly form ed stars within it d. the remnant of a star that exploded several thousand years ago e. an illusion caused by activity in the Earth's upper atmosphe ...
... b. a small disk of gas and dust surrounding a single star that was recently formed c. a cloud o f gas and du st illuminated by th e light of newly form ed stars within it d. the remnant of a star that exploded several thousand years ago e. an illusion caused by activity in the Earth's upper atmosphe ...
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.