The Life Cycle of Stars
... It is red because it is cooler than it was in the main sequence star stage and it is a giant because the outer shell has expanded outward. In the core of the red giant, helium fuses into carbon. All stars evolve the same way up to the red giant phase. The amount of mass a star has determines which l ...
... It is red because it is cooler than it was in the main sequence star stage and it is a giant because the outer shell has expanded outward. In the core of the red giant, helium fuses into carbon. All stars evolve the same way up to the red giant phase. The amount of mass a star has determines which l ...
eta carinae – nature`s own hadron collider
... ETA CARINAE IS ONE OF THE MOST MASSIVE STARS KNOWN. IT IS AROUND 100 SOLAR MASSES. THE UPPER LIMIT OF STAR SIZE IS THOUGHT TO BE AROUND 150 SOLAR MASSES. BECAUSE OF ITS SIZE, AND THE HIGH ENERGIES PRODUCED BECAUSE OF GRAVITY, IT IS UNSTABLE. ...
... ETA CARINAE IS ONE OF THE MOST MASSIVE STARS KNOWN. IT IS AROUND 100 SOLAR MASSES. THE UPPER LIMIT OF STAR SIZE IS THOUGHT TO BE AROUND 150 SOLAR MASSES. BECAUSE OF ITS SIZE, AND THE HIGH ENERGIES PRODUCED BECAUSE OF GRAVITY, IT IS UNSTABLE. ...
Physics 6B Practice Questions
... encounters another filter whose transmission axis is at an angle of 34° to the first one. What percentage of the original sunlight intensity is transmitted through the second filter? a) ...
... encounters another filter whose transmission axis is at an angle of 34° to the first one. What percentage of the original sunlight intensity is transmitted through the second filter? a) ...
Astronomical Ideas Fall 2012 Homework 4 Solutions 1. Two stars
... massive stars that still burn H on the main sequence is a clock, because we know that the cluster needs to be old enough so that all of the more massive stars have already burned up all of their Hydrogen and left the main sequence. ...
... massive stars that still burn H on the main sequence is a clock, because we know that the cluster needs to be old enough so that all of the more massive stars have already burned up all of their Hydrogen and left the main sequence. ...
TRANSIT
... Had Vulcan existed, it would obviously have been near-impossible to see in normal circumstances, as it would have been permanently lost in the Sun’s glare. It was proposed that there might be two ways of finding it. One was that it could be seen during total solar eclipses; the other was that it wou ...
... Had Vulcan existed, it would obviously have been near-impossible to see in normal circumstances, as it would have been permanently lost in the Sun’s glare. It was proposed that there might be two ways of finding it. One was that it could be seen during total solar eclipses; the other was that it wou ...
Sparta High School
... What can astronomy tell us about the human race and planet Earth? Why spend the time and money? How do we know so much about distant space if we can’t travel there? How big is “big” and how long is a “long time”? Where are we located in the solar system, galaxy and universe? How do modern astronomer ...
... What can astronomy tell us about the human race and planet Earth? Why spend the time and money? How do we know so much about distant space if we can’t travel there? How big is “big” and how long is a “long time”? Where are we located in the solar system, galaxy and universe? How do modern astronomer ...
Powerpoint for today - Physics and Astronomy
... Infrared also allows you to see through dust. Dust is good at blocking visible light but infrared gets through better. ...
... Infrared also allows you to see through dust. Dust is good at blocking visible light but infrared gets through better. ...
Discovery of the Kuiper Belt
... from the speed, and then estimated the size from the brightness and the distance. We also calculated the number of similar objects to be found if we could continue our survey over the whole sky in the plane of the solar system. By the end of the night, we knew that we had found a solar system object ...
... from the speed, and then estimated the size from the brightness and the distance. We also calculated the number of similar objects to be found if we could continue our survey over the whole sky in the plane of the solar system. By the end of the night, we knew that we had found a solar system object ...
BBA IInd SEMESTER EXAMINATION 2008-09
... Answer any five of the following (limit your answer in 50 words). (4x5=20) What are orbital parameters required to determine a satellite’s orbit? Explain them. What is meant by look angles? Explain them with reference to a geostationary satellite and earth station. A satellite is moving in a highly ...
... Answer any five of the following (limit your answer in 50 words). (4x5=20) What are orbital parameters required to determine a satellite’s orbit? Explain them. What is meant by look angles? Explain them with reference to a geostationary satellite and earth station. A satellite is moving in a highly ...
The Final Flight of Atlantis - Westchester Amateur Astronomers
... So, later this year LIGO will be shut down so researchers can begin work on Advanced LIGO—a next generation detector 10 times more sensitive than its predecessor. “We’ll be monitoring a volume of space a thousand times greater than before,” says Cavaglia. “This will transform LIGO into a real observ ...
... So, later this year LIGO will be shut down so researchers can begin work on Advanced LIGO—a next generation detector 10 times more sensitive than its predecessor. “We’ll be monitoring a volume of space a thousand times greater than before,” says Cavaglia. “This will transform LIGO into a real observ ...
SPECTRAL ANALYSIS OF A NEWLY DISCOVERED HgMn STAR
... Ni (0.63 dex). We failed to identify more Hg II lines in the range from 5590 to 5840 Å due to the telluric lines. Telluric lines should be reduced to obtain more a precise mercury abundance. New observations at high resolution including 3500 to 4500 Å region may also help to improve the Hg overabund ...
... Ni (0.63 dex). We failed to identify more Hg II lines in the range from 5590 to 5840 Å due to the telluric lines. Telluric lines should be reduced to obtain more a precise mercury abundance. New observations at high resolution including 3500 to 4500 Å region may also help to improve the Hg overabund ...
Physics 20 Concept 22 Orbits and Satellites
... As the speed of the horizontal projectile is increased, it will land further and further away from the starting point. For a flat Earth the projectile would always hit the ground; no matter how fast the projectile went, gravity would pull it down to the ground. However, since the Earth is round, the ...
... As the speed of the horizontal projectile is increased, it will land further and further away from the starting point. For a flat Earth the projectile would always hit the ground; no matter how fast the projectile went, gravity would pull it down to the ground. However, since the Earth is round, the ...
Putting a Whopper into Orbit
... Orbit is a word we hear quite often. Every time the Space Shuttle lifts off the launch pad, we hear it. Every time the Space Shuttle meets up with the International Space Station (ISS), we hear it. And every time a rocket launches a payload, we hear the word "orbit." It's a widely used term, but do ...
... Orbit is a word we hear quite often. Every time the Space Shuttle lifts off the launch pad, we hear it. Every time the Space Shuttle meets up with the International Space Station (ISS), we hear it. And every time a rocket launches a payload, we hear the word "orbit." It's a widely used term, but do ...
Astronomers classify stars according to their physical characteristics
... •A star’s _apparent_ brightness depends upon how bright it _actually is and its _distance_ from Earth. •A star’s actual brightness (or _absolute magnitude) usually depends on the star’s _size_ and temperature__. •Because stars with _more mass ___ have more __self _gravity, they tend to have _higher_ ...
... •A star’s _apparent_ brightness depends upon how bright it _actually is and its _distance_ from Earth. •A star’s actual brightness (or _absolute magnitude) usually depends on the star’s _size_ and temperature__. •Because stars with _more mass ___ have more __self _gravity, they tend to have _higher_ ...
Astronomy Final Study Guide – Name: **This will be the biggest test
... **This will be the biggest test we have taken this year. I recommend using this study guide wisely to analyze what you already know well. Ask your friends questions. Quiz each other. Ask me questions. There is no point in copying each other because this is not a homework assignment, but it will help ...
... **This will be the biggest test we have taken this year. I recommend using this study guide wisely to analyze what you already know well. Ask your friends questions. Quiz each other. Ask me questions. There is no point in copying each other because this is not a homework assignment, but it will help ...
binary stars - El Camino College
... fainter orange star, but still about 100 times brighter than our full Moon. The 2nd star would easily be visible in the day time and you could easily read by its light at night. From this fictional planet, tiny Proxima would be a deep red star four times fainter than the stars in the Big Dipper! Thr ...
... fainter orange star, but still about 100 times brighter than our full Moon. The 2nd star would easily be visible in the day time and you could easily read by its light at night. From this fictional planet, tiny Proxima would be a deep red star four times fainter than the stars in the Big Dipper! Thr ...
constellation wars
... • Primitive calendars predicting/planning harvest and planting seasons. Ancient cultures knew when certain stars appeared on the horizon before daybreak, it would be the beginning of spring ...
... • Primitive calendars predicting/planning harvest and planting seasons. Ancient cultures knew when certain stars appeared on the horizon before daybreak, it would be the beginning of spring ...
printer-friendly sample test questions
... D. Massive black holes are drawing galaxies away from Earth. 4. We know that nearly all galaxies are moving away from us because we A. watch them move across the sky, all in the same direction. B. see that their spectra are red-shifted relative to a rest position. C. observe a condensation trail beh ...
... D. Massive black holes are drawing galaxies away from Earth. 4. We know that nearly all galaxies are moving away from us because we A. watch them move across the sky, all in the same direction. B. see that their spectra are red-shifted relative to a rest position. C. observe a condensation trail beh ...
CHAPTER 10, Stellar Motions
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitational interactions with their stars. However, tech ...
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitational interactions with their stars. However, tech ...
Exercise set five
... each set of observations: Indicate the name of the person who took the data. Record as much information as you can about what star was used and from where it was observed. List the date and time of each occultation. ...
... each set of observations: Indicate the name of the person who took the data. Record as much information as you can about what star was used and from where it was observed. List the date and time of each occultation. ...
White Dwarf Stars Near The Earth
... Procyon B is the companion to Procyon, a bright first-magnitude star not far at all in the sky from Sirius. (Indeed, Sirius and Procyon are the luminaries of the adjacent constellations Canis Major and Canis Minor, respectively, otherwise known as the Big Dog and the Little Dog.) Procyon B orbits ve ...
... Procyon B is the companion to Procyon, a bright first-magnitude star not far at all in the sky from Sirius. (Indeed, Sirius and Procyon are the luminaries of the adjacent constellations Canis Major and Canis Minor, respectively, otherwise known as the Big Dog and the Little Dog.) Procyon B orbits ve ...
arXiv:0712.2297v1 [astro
... telescopes. Consequently, more than 66% of our target stars are fainter than V=8 mag. The observing scheme follows the standard practices implemented in precision radial velocity measurements with the iodine cell (Marcy & Butler 1992). The spectral data used for RV measurements are extracted from th ...
... telescopes. Consequently, more than 66% of our target stars are fainter than V=8 mag. The observing scheme follows the standard practices implemented in precision radial velocity measurements with the iodine cell (Marcy & Butler 1992). The spectral data used for RV measurements are extracted from th ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.