Nebulas & Stars
... is PKS-2349 which is only about 1500 million light years away from Earth Quasars can live for a very long time scientists say that quasars that were discovered around 35 ...
... is PKS-2349 which is only about 1500 million light years away from Earth Quasars can live for a very long time scientists say that quasars that were discovered around 35 ...
29.2 - Stars - s3.amazonaws.com
... Constellation stars • Astronomers use constellations to locate particular stars • Stars within a constellation are named according to apparent magnitude – Brightest star is labeled alpha – Next brightest beta and so on ...
... Constellation stars • Astronomers use constellations to locate particular stars • Stars within a constellation are named according to apparent magnitude – Brightest star is labeled alpha – Next brightest beta and so on ...
PLANETARY MOTION G. Iafrate(a) and M. Ramella(a) (a) INAF
... Within this use case you learn about Kepler's laws, a cornerstone of astronomy and a fundamental brick of both Newton's and Einstein's theories of gravitation. This use case is complemented by use cases 10 and 16 (at different levels of difficulty). If used in the classroom this advanced use case re ...
... Within this use case you learn about Kepler's laws, a cornerstone of astronomy and a fundamental brick of both Newton's and Einstein's theories of gravitation. This use case is complemented by use cases 10 and 16 (at different levels of difficulty). If used in the classroom this advanced use case re ...
Sample exam 2
... sentence/paragraph format or a drawing, depending on what is asked. 11. The Sun started off its trajectory on the Hertzsprung-Russell diagram by initially moving down and to the left as it organized into a protostar. Explain this behavior in terms of temperature and luminosity, and give a reason for ...
... sentence/paragraph format or a drawing, depending on what is asked. 11. The Sun started off its trajectory on the Hertzsprung-Russell diagram by initially moving down and to the left as it organized into a protostar. Explain this behavior in terms of temperature and luminosity, and give a reason for ...
Oscillating White Dwarf Stars Background on White Dwarfs
... The window function introduces alias frequencies (periods) into the amplitude spectrum. In the presence of noise an alias peak my be higher than the real peak. The result is you recover an alias frequency, or have additional frequencies that are artifacts of the window function. To minimize these ef ...
... The window function introduces alias frequencies (periods) into the amplitude spectrum. In the presence of noise an alias peak my be higher than the real peak. The result is you recover an alias frequency, or have additional frequencies that are artifacts of the window function. To minimize these ef ...
Introduction to the HR Diagram
... carbon. Most of these stars go through a Mira variable instability strip with a periodic light curve of ~80 - 1000 days. Stars that have evolved to the giant branch are commonly referred to as red giants. Eventually these red giants will shrug off a planetary nebula and leave a white dwarf core remn ...
... carbon. Most of these stars go through a Mira variable instability strip with a periodic light curve of ~80 - 1000 days. Stars that have evolved to the giant branch are commonly referred to as red giants. Eventually these red giants will shrug off a planetary nebula and leave a white dwarf core remn ...
Sirius Astronomer - Orange County Astronomers
... last year and President this year. For those of you that know me, I'm not a very talkative person, especially when it comes to written correspondence. I'm usually brief and to the point. So, if this letter seems short, have a good laugh because it’s probably twice as long as my usual letters. OCA is ...
... last year and President this year. For those of you that know me, I'm not a very talkative person, especially when it comes to written correspondence. I'm usually brief and to the point. So, if this letter seems short, have a good laugh because it’s probably twice as long as my usual letters. OCA is ...
Trainer`s Notes
... The planets in our solar system, starting from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was also considered a planet from 1930 until 2006 when the International Astronomer's Union (IAU) was prompted by the discovery Eris, a body larger than Pluto, to come ...
... The planets in our solar system, starting from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was also considered a planet from 1930 until 2006 when the International Astronomer's Union (IAU) was prompted by the discovery Eris, a body larger than Pluto, to come ...
Microlensing in NZ
... source stars Hence a few transit events should occur per year with free-floating planets and main sequence sources Duration is shorter, magnification is less, and the lens must be nearby for a mass measurement. Detection rate will be low - a challenge for LCOGT But can be done simultaneously while m ...
... source stars Hence a few transit events should occur per year with free-floating planets and main sequence sources Duration is shorter, magnification is less, and the lens must be nearby for a mass measurement. Detection rate will be low - a challenge for LCOGT But can be done simultaneously while m ...
Introductory Astrophysics
... 2 Phases of Moon due to shadows cast by Sun (Aristotle c 384-322 BC) * 3 Eclipses caused by Earth-Moon-Sun alignments (Aristotle) * 4 A moving Earth should cause parallax effects (Aristotle) * 5 Earth revolves around the Sun (Aristarchus 310-230 BC) * 6 Distance ratios between Earth, Moon, and Sun ( ...
... 2 Phases of Moon due to shadows cast by Sun (Aristotle c 384-322 BC) * 3 Eclipses caused by Earth-Moon-Sun alignments (Aristotle) * 4 A moving Earth should cause parallax effects (Aristotle) * 5 Earth revolves around the Sun (Aristarchus 310-230 BC) * 6 Distance ratios between Earth, Moon, and Sun ( ...
Stars & Constellations
... found North, they could observe its height in the sky and hence work out their latitude (how far North / South they are). Now they know how far North they are + the direction they’re traveling ...
... found North, they could observe its height in the sky and hence work out their latitude (how far North / South they are). Now they know how far North they are + the direction they’re traveling ...
A rocky planet transiting a nearby low-mass star
... GJ 1132b’s average density resembles that of the Earth, and is well matched by a rock/iron bulk composition. A theoretical mass-radius curve21 for a two-layer planet composed of 75% magnesium silicate and 25% iron (by mass) is consistent with our estimates for GJ 1132b (Fig. 3). This model assumes t ...
... GJ 1132b’s average density resembles that of the Earth, and is well matched by a rock/iron bulk composition. A theoretical mass-radius curve21 for a two-layer planet composed of 75% magnesium silicate and 25% iron (by mass) is consistent with our estimates for GJ 1132b (Fig. 3). This model assumes t ...
Quiz 2 review sheet - Rice Space Institute
... until the Helium in their inner core is exhausted. When their helium in their inner core is used up, the core collapses again and starts burning Carbon into iron. The fusion in the core even goes deeper, changing Fe into heavier elements. But since iron is the most stable element, additional fusion ...
... until the Helium in their inner core is exhausted. When their helium in their inner core is used up, the core collapses again and starts burning Carbon into iron. The fusion in the core even goes deeper, changing Fe into heavier elements. But since iron is the most stable element, additional fusion ...
The Later Evolution of Low Mass Stars (< 8 solar masses)
... Eventually at greater than about 10 g cm electrons in the central part of the white dwarf start to move close to the speed of light. As the mass continues to grow, a larger fraction of the star is supported by relativistic electron degeneracy pressure. Consider the limit: ...
... Eventually at greater than about 10 g cm electrons in the central part of the white dwarf start to move close to the speed of light. As the mass continues to grow, a larger fraction of the star is supported by relativistic electron degeneracy pressure. Consider the limit: ...
Patterns in the Sky
... - Although we look at the constellation that our ancestors view, some of the component stars have moved. - Stars closer to our sun move faster then those located further away. ...
... - Although we look at the constellation that our ancestors view, some of the component stars have moved. - Stars closer to our sun move faster then those located further away. ...
Document
... Helium burning, often called the triple alpha process occurs above temperatures of 100,000,000 K. 8Be is unstable and decays back into He in 2.6 × 10–16 secs, but in the stellar interior a small equilibrium of 8Be exists. The 8Be ground state has almost exactly the energy of two alpha particles. In ...
... Helium burning, often called the triple alpha process occurs above temperatures of 100,000,000 K. 8Be is unstable and decays back into He in 2.6 × 10–16 secs, but in the stellar interior a small equilibrium of 8Be exists. The 8Be ground state has almost exactly the energy of two alpha particles. In ...
To know that planets etc. move in elliptical orbits around the Sun.
... To understand named terminology with respect to planetary orbits. ...
... To understand named terminology with respect to planetary orbits. ...
Document
... Meteorites as “fossils” of the earliest history of our Solar System Meteorites are also “fossils”, because they have preserved within them a record of the most ancient history of solar system material, a record not preserved in any other rocks. For example, dating of meteorites allows the determina ...
... Meteorites as “fossils” of the earliest history of our Solar System Meteorites are also “fossils”, because they have preserved within them a record of the most ancient history of solar system material, a record not preserved in any other rocks. For example, dating of meteorites allows the determina ...
February 2007
... Earth. Such planets would likely be rocky with atmospheres, and able to retain water. The 2.4meter, robotic, telescope will be dedicated every night to this planet search.” – http://exoplanets.org/telescope.ht ...
... Earth. Such planets would likely be rocky with atmospheres, and able to retain water. The 2.4meter, robotic, telescope will be dedicated every night to this planet search.” – http://exoplanets.org/telescope.ht ...
Lecture 5: The H-R diagram, standard candles and cosmic distances
... different spectral types • A spectroscopic binary has spectral lines that shift back and forth in wavelength due to the Doppler effect, as the orbits of the stars carry them first toward then away from the Earth • Analysis of these spectral shifts allows velocity and period to be derived, and henc ...
... different spectral types • A spectroscopic binary has spectral lines that shift back and forth in wavelength due to the Doppler effect, as the orbits of the stars carry them first toward then away from the Earth • Analysis of these spectral shifts allows velocity and period to be derived, and henc ...
3 Habitable Zones in Extrasolar Planetary Systems
... have to determine the habitable zone (HZ) for our solar system. The HZ of distances between a main sequence star and an Earth-like planet is roughly defined as the range of mean orbital radii which imply moderate planetary surface temperatures suitable for the development and subsistence of carbon-b ...
... have to determine the habitable zone (HZ) for our solar system. The HZ of distances between a main sequence star and an Earth-like planet is roughly defined as the range of mean orbital radii which imply moderate planetary surface temperatures suitable for the development and subsistence of carbon-b ...