The Night Sky May 2016 - Bridgend Astronomical Society
... arc seconds away which is also a double star! Pollux is a red giant star of spectral class K0. The planet Pluto was discovered close to delta Geminorum by Clyde Tombaugh in 1930. The variable star shown to the lower right of delta Geminorum is a Cepheid variable, changing its brightness from 3.6 to ...
... arc seconds away which is also a double star! Pollux is a red giant star of spectral class K0. The planet Pluto was discovered close to delta Geminorum by Clyde Tombaugh in 1930. The variable star shown to the lower right of delta Geminorum is a Cepheid variable, changing its brightness from 3.6 to ...
Test#4
... PH109 Exploring the Universe, Test #4, Spring 2012 Please indicate the best answer to the following question on the answer sheet provided. 1. What kind of galaxy do we live in? a) Spiral, b) elliptical, c) spherical, d) irregular 2. The size of our galaxy is about a) 3 light years, b) 100 thousand l ...
... PH109 Exploring the Universe, Test #4, Spring 2012 Please indicate the best answer to the following question on the answer sheet provided. 1. What kind of galaxy do we live in? a) Spiral, b) elliptical, c) spherical, d) irregular 2. The size of our galaxy is about a) 3 light years, b) 100 thousand l ...
Stars & Galaxies
... Absolute Magnitude: The brightness the star would have if it were at a standard distance from earth. The actual brightness of a star. ...
... Absolute Magnitude: The brightness the star would have if it were at a standard distance from earth. The actual brightness of a star. ...
type II supernova
... astronomical history is known as SN 1987A, and became visible, as the name suggests, on February 24, 1987. The explosion occurred in a nearby satellite galaxy of the Milky Way called the Large Magellanic Cloud, so named because it was not known to Europeans until Magellan voyaged south of the Equato ...
... astronomical history is known as SN 1987A, and became visible, as the name suggests, on February 24, 1987. The explosion occurred in a nearby satellite galaxy of the Milky Way called the Large Magellanic Cloud, so named because it was not known to Europeans until Magellan voyaged south of the Equato ...
(HR) Diagrams
... Five units of visual magnitude correspond to a hundred-fold difference in brightness. For example, a star with MV = 1.0 is 100 times brighter than one with MV = 6.0, as seen from the same distance. ...
... Five units of visual magnitude correspond to a hundred-fold difference in brightness. For example, a star with MV = 1.0 is 100 times brighter than one with MV = 6.0, as seen from the same distance. ...
Stars and Galaxies
... What would happen if an even more massive star would explode into a supernova leaving behind a core that is even more dense than a neutron star? Such gravitational forces would be so great that not even light could escape We call these black holes ...
... What would happen if an even more massive star would explode into a supernova leaving behind a core that is even more dense than a neutron star? Such gravitational forces would be so great that not even light could escape We call these black holes ...
The All-Seeing, All-Magnifying Eye
... pulsar-timing) by which we can detect terrestrial-type planets around Sunlike stars or close double-star systems. The brightening can be up to about one magnitude -- the star becomes about 3 times brighter. So far, to date, finding this “flash” is the only technique (other than photometric transits ...
... pulsar-timing) by which we can detect terrestrial-type planets around Sunlike stars or close double-star systems. The brightening can be up to about one magnitude -- the star becomes about 3 times brighter. So far, to date, finding this “flash” is the only technique (other than photometric transits ...
Stars and The Universe
... None Expected Outcomes for Students: Upon completion of the course, the student should be able to: ...
... None Expected Outcomes for Students: Upon completion of the course, the student should be able to: ...
EM Spectrum Notes - Biloxi Public Schools
... Term 1---EM Spectrum Notes blue shift objects moving towards Earth shorter wavelength ...
... Term 1---EM Spectrum Notes blue shift objects moving towards Earth shorter wavelength ...
Test #4 (Ch. 13-16) ASTR 10 You have 1 hour to take the exam, and
... You have 1 hour to take the exam, and you can keep your copy of the test once you’re done. A list of answers to this exam will post to the course website next week, so you can have feedback on the exam before the final. 1. Which two processes can generate energy to help a star maintain its internal ...
... You have 1 hour to take the exam, and you can keep your copy of the test once you’re done. A list of answers to this exam will post to the course website next week, so you can have feedback on the exam before the final. 1. Which two processes can generate energy to help a star maintain its internal ...
What have we learned?
... • How were neutron stars discovered? – Beams of radiation from a rotating neutron star sweep through space like lighthouse beams, making them appear to pulse. – Observations of these pulses were the first evidence for neutron stars. ...
... • How were neutron stars discovered? – Beams of radiation from a rotating neutron star sweep through space like lighthouse beams, making them appear to pulse. – Observations of these pulses were the first evidence for neutron stars. ...
EM Spectrum Notes 2015-2016
... EM Spectrum Notes 2015-2016 blue shift objects moving towards Earth shorter wavelength ...
... EM Spectrum Notes 2015-2016 blue shift objects moving towards Earth shorter wavelength ...
The Interstellar Medium
... Appears as a milky band arching over the sky. Milky Way from Latin: Via Lactea. Milk spilt when Hera was feeding Heracles. Akash Ganga. ...
... Appears as a milky band arching over the sky. Milky Way from Latin: Via Lactea. Milk spilt when Hera was feeding Heracles. Akash Ganga. ...
Exercise 7
... 10. How many Sun-like stars (remember, even if it's in the same spectral class as the Sun, it can't be part of a multiple-star system — except under certain circumstances!) are there on this model? What percentage of all the stars in the model are Sun-like? ...
... 10. How many Sun-like stars (remember, even if it's in the same spectral class as the Sun, it can't be part of a multiple-star system — except under certain circumstances!) are there on this model? What percentage of all the stars in the model are Sun-like? ...
Option E Sum Pages
... The basic features of the H-R can be found using the population of stars near enough for the parallax method for distance measurement. Making the assumption that stars far away have the same properties as those near us, we can measure the max which with Wiens law gives the temperature T and observe ...
... The basic features of the H-R can be found using the population of stars near enough for the parallax method for distance measurement. Making the assumption that stars far away have the same properties as those near us, we can measure the max which with Wiens law gives the temperature T and observe ...
Galaxies • Test 3 (New date) – Thurs, 9 April
... There is little light beyond 7 kpc. Where there is mass there is not necessarily light from stars & gas. Extrapolate M(R) is linear beyond visible part of ...
... There is little light beyond 7 kpc. Where there is mass there is not necessarily light from stars & gas. Extrapolate M(R) is linear beyond visible part of ...
Beyond Our Solar System
... – Its orbit carries it as close to the sun as 0.307 AU and as far away as 0.467 AU. – You can see this variation in the distance from Mercury to the sun in the figure. – Earth’s orbit is more circular, and its distance from the sun varies by only a few ...
... – Its orbit carries it as close to the sun as 0.307 AU and as far away as 0.467 AU. – You can see this variation in the distance from Mercury to the sun in the figure. – Earth’s orbit is more circular, and its distance from the sun varies by only a few ...
Stars, Galaxies, and the Universe
... one eye and then the other, your thumb will appear to move back and forth. Stars do the same thing, but our eyes are much too close to see the difference. If we take a picture while on one side of Earth's orbit, and then take another when we get to the opposite side of the orbit, then we have a ...
... one eye and then the other, your thumb will appear to move back and forth. Stars do the same thing, but our eyes are much too close to see the difference. If we take a picture while on one side of Earth's orbit, and then take another when we get to the opposite side of the orbit, then we have a ...
BML_V
... by turbulence and magnetic fields. This approach is followed by gALFA, as it explores the multitude of processes involved in our Galaxy's gas economy. The behaviour of the ISM is affected by large-scale turbulence, and by the presence of cosmic rays and magnetic fields, quite apart from the injectio ...
... by turbulence and magnetic fields. This approach is followed by gALFA, as it explores the multitude of processes involved in our Galaxy's gas economy. The behaviour of the ISM is affected by large-scale turbulence, and by the presence of cosmic rays and magnetic fields, quite apart from the injectio ...
26.5 Guided Notes
... 1. Existence of cosmic microwave background radiation 2. Red shift in the spectra of distant galaxies ...
... 1. Existence of cosmic microwave background radiation 2. Red shift in the spectra of distant galaxies ...
Can you write numbers in scientific notation
... How well do you know the characteristics of open clusters and globular clusters (e.g. number of stars, location in the Galaxy, types of stars in each, etc.)? What is the assumption we make about the formation of stars in a given cluster and what does that lead us to believe about the age and distanc ...
... How well do you know the characteristics of open clusters and globular clusters (e.g. number of stars, location in the Galaxy, types of stars in each, etc.)? What is the assumption we make about the formation of stars in a given cluster and what does that lead us to believe about the age and distanc ...
THE LIFE CYCLES OF STARS (3)
... immense distances we now know and partly for this reason they rejected the idea of the Earth going round the sun (heliocentric theory) because they could detect no parallactic shift in stellar positions. Later when the heliocentric theory was accepted it was realized that the stars were at immense b ...
... immense distances we now know and partly for this reason they rejected the idea of the Earth going round the sun (heliocentric theory) because they could detect no parallactic shift in stellar positions. Later when the heliocentric theory was accepted it was realized that the stars were at immense b ...
Groups of Stars
... from the motion of the other star. If one star passes in front of the other, blocking some of ...
... from the motion of the other star. If one star passes in front of the other, blocking some of ...
Class 28 (Jun 2) - Physics at Oregon State University
... stars to measure the distance to other galaxies. • A Cepheid’s luminosity is proportional to its period, so if we know how rapidly it brightens and dims, we know much energy it emits. • If we see a Cepheid in another galaxy, we measure its period, determine its luminosity, and calculate its distance ...
... stars to measure the distance to other galaxies. • A Cepheid’s luminosity is proportional to its period, so if we know how rapidly it brightens and dims, we know much energy it emits. • If we see a Cepheid in another galaxy, we measure its period, determine its luminosity, and calculate its distance ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.