Lecture 1
... star (Star A), out to the Distant Stars. Which of the distant stars would appear closest to Star A in your night sky in January. Circle this distant star and label it Jan. Repeat Question 1 for July and label the distant star “July”. In the box below, the same distant stars are shown as you would se ...
... star (Star A), out to the Distant Stars. Which of the distant stars would appear closest to Star A in your night sky in January. Circle this distant star and label it Jan. Repeat Question 1 for July and label the distant star “July”. In the box below, the same distant stars are shown as you would se ...
Key Stage 2: Teacher`s Pack
... 8. The rotational period of a star is the time it takes to spin around once. The Crab pulsar spins on its axis 30 times a second. What is its rotational period? Period = 1 / frequency = 1/30 = 0.033 seconds 9. This shows one way of finding exoplanets. The amount of light from the star is being measu ...
... 8. The rotational period of a star is the time it takes to spin around once. The Crab pulsar spins on its axis 30 times a second. What is its rotational period? Period = 1 / frequency = 1/30 = 0.033 seconds 9. This shows one way of finding exoplanets. The amount of light from the star is being measu ...
1B11 Foundations of Astronomy Star names and magnitudes
... escape velocity exceeds the speed of light • Supernova – when a massive star at the end of its normal stellar evolution explodes to form a neutron star or black hole ...
... escape velocity exceeds the speed of light • Supernova – when a massive star at the end of its normal stellar evolution explodes to form a neutron star or black hole ...
Astronomy 112: Physics of Stars Problem set 2: Due April 29 1. Time
... 1. Time scales: Assume, as empirically determined for binary star systems, that the radius of main sequence stars scales approximately as M2/3 . Also assume that the mass-luminosity relation found on the main sequence, i.e., L ∝ M 3 , is valid for stars somewhat above the main sequence experiencing ...
... 1. Time scales: Assume, as empirically determined for binary star systems, that the radius of main sequence stars scales approximately as M2/3 . Also assume that the mass-luminosity relation found on the main sequence, i.e., L ∝ M 3 , is valid for stars somewhat above the main sequence experiencing ...
Heliocentric model
... moons of Jupiter (Galilean Moons). – The fact that bodies could orbit other planets supported heliocentric view. ...
... moons of Jupiter (Galilean Moons). – The fact that bodies could orbit other planets supported heliocentric view. ...
General - Friends of APOD
... Explanation: Spiral galaxy NGC 1097 shines in southern skies, about 45 million light–years away in the chemical constellation Fornax. Its blue spiral arms are mottled with pinkish star forming regions in this colorful galaxy portrait. They seem to have wrapped around a small companion galaxy below a ...
... Explanation: Spiral galaxy NGC 1097 shines in southern skies, about 45 million light–years away in the chemical constellation Fornax. Its blue spiral arms are mottled with pinkish star forming regions in this colorful galaxy portrait. They seem to have wrapped around a small companion galaxy below a ...
The Turbulent Birth of Stars and Planets - Max-Planck
... latter scenario. Near the outer edge of the large gap in the disk around T Chamaeleontis, they found what could be an orbiting body. It is located about a billion kilometers away from its central star, a distance comparable to that between Jupiter and the Sun. But these observations are at the limit ...
... latter scenario. Near the outer edge of the large gap in the disk around T Chamaeleontis, they found what could be an orbiting body. It is located about a billion kilometers away from its central star, a distance comparable to that between Jupiter and the Sun. But these observations are at the limit ...
The Sun and the Stars
... Wolf Rayet, W or WR – mostly He atmos. - dying supergiants with fast stellar winds subtypes WC, WN or WO (for Carbon, Nitrogen and Oxygen) (Possible GRB/Hypernovae progenitors) Carbon stars, C (originally R and N classification), red-giants/supergiants near end of lives with excess, Carbon in atmosp ...
... Wolf Rayet, W or WR – mostly He atmos. - dying supergiants with fast stellar winds subtypes WC, WN or WO (for Carbon, Nitrogen and Oxygen) (Possible GRB/Hypernovae progenitors) Carbon stars, C (originally R and N classification), red-giants/supergiants near end of lives with excess, Carbon in atmosp ...
Discovering The Universe for Yourself
... • Are stars still present in the sky during the day time? – Yes, we just can’t see them because their dim light is overwhelmed by the brightness of the sun during the day. ...
... • Are stars still present in the sky during the day time? – Yes, we just can’t see them because their dim light is overwhelmed by the brightness of the sun during the day. ...
4550-15Lecture35
... ephemeral streams now. To attain the necessary temperatures, Mars must have had CO2 pressures at its surface of 5 to 10 atm. This early atmosphere has been lost, a consequence of lower gravity and the lack of a geomagnetic field that prevents erosion of the atmosphere by the solar wind. Thus the dep ...
... ephemeral streams now. To attain the necessary temperatures, Mars must have had CO2 pressures at its surface of 5 to 10 atm. This early atmosphere has been lost, a consequence of lower gravity and the lack of a geomagnetic field that prevents erosion of the atmosphere by the solar wind. Thus the dep ...
Lesson 4. Wiens and Stefans Laws
... Questions 1. The peak intensity of thermal radiation from the Sun is at a wavelength of 500 nm, calculate the surface temperature of the Sun. 2. A star has a power output of 6.0 x 1028 W and a surface temperature of 3400K, calculate its radius and the ratio to the Sun’s radius (rsun = 7 x 108 m) ...
... Questions 1. The peak intensity of thermal radiation from the Sun is at a wavelength of 500 nm, calculate the surface temperature of the Sun. 2. A star has a power output of 6.0 x 1028 W and a surface temperature of 3400K, calculate its radius and the ratio to the Sun’s radius (rsun = 7 x 108 m) ...
Astronomical Observations (Fall 2004) Final Exam
... Astronomical Observations (Fall 2004) Final Exam 11 January, 2005 Tuesday 18:00~20:00 ...
... Astronomical Observations (Fall 2004) Final Exam 11 January, 2005 Tuesday 18:00~20:00 ...
Nova
... In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, called the Roche lobe, within which material is gravitationally bound to the star (see Figure 1). The Roche surface is, therefore, the surface along which the gravitational potential is comm ...
... In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, called the Roche lobe, within which material is gravitationally bound to the star (see Figure 1). The Roche surface is, therefore, the surface along which the gravitational potential is comm ...
6 - In the Beginning: Science and Genesis 1-11
... Seven of the eight planets of our solar system follow highly circular orbits, despite the fact that NASA must plan with great precision to put a satellite into a nearly circular orbit and have difficulty keeping it there very long. Modern theories predict our planets should have developed abnormali ...
... Seven of the eight planets of our solar system follow highly circular orbits, despite the fact that NASA must plan with great precision to put a satellite into a nearly circular orbit and have difficulty keeping it there very long. Modern theories predict our planets should have developed abnormali ...
Plotting Variable Stars on the H
... Orionis) are two prominent examples of LPV semiregular variable stars. These stars occupy a region of instability on the H-R diagram above the Mira variables and are generally spectral class K, M, C or S. Since stars are plotted on the H-R diagram by absolute magnitude and/or luminosity and surface ...
... Orionis) are two prominent examples of LPV semiregular variable stars. These stars occupy a region of instability on the H-R diagram above the Mira variables and are generally spectral class K, M, C or S. Since stars are plotted on the H-R diagram by absolute magnitude and/or luminosity and surface ...
Final Exam Review – December 2015
... 11. Which elements have properties most similar to Calcium (Ca)? ____________________________________________________ ...
... 11. Which elements have properties most similar to Calcium (Ca)? ____________________________________________________ ...
Falling Stars
... In a meteor storm, over 1,000 meteors blaze across the sky every hour. In 1833, people all over America woke up to see hundreds of stars falling every minute! All night, the sky was brightened by meteors that rocketed through the night by the thousands! Since no telescopes or fancy equipment were ne ...
... In a meteor storm, over 1,000 meteors blaze across the sky every hour. In 1833, people all over America woke up to see hundreds of stars falling every minute! All night, the sky was brightened by meteors that rocketed through the night by the thousands! Since no telescopes or fancy equipment were ne ...
The Parent Stars of New Extrasolar Planet System Candidates
... it is possible that an inward-migrating planet was accreted by the star, thus changing the stellar surface and explaining the odd abundances observed. Unlike Gliese 876, the two stars HR 810 and HR 7875 are very similar to the sun. They are each close to one solar mass and are slightly younger than ...
... it is possible that an inward-migrating planet was accreted by the star, thus changing the stellar surface and explaining the odd abundances observed. Unlike Gliese 876, the two stars HR 810 and HR 7875 are very similar to the sun. They are each close to one solar mass and are slightly younger than ...
Celestial Distances
... 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 to measure the lar ...
... 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 to measure the lar ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.