Lecture 1 Coordinate Systems - Department of Physics & Astronomy
... and you, my friend, are dead wrong.. ...
... and you, my friend, are dead wrong.. ...
Science performance of Gaia, ESA`s space
... Gaia will be launched from the European Space port in French Guiana by a Soyuz-STB/Fregat launch vehicle. Initially, the Fregat-Gaia composite will be placed in a lowaltitude parking orbit, after which a Fregat boost will inject the spacecraft into its transfer trajectory towards the second Lagrange ...
... Gaia will be launched from the European Space port in French Guiana by a Soyuz-STB/Fregat launch vehicle. Initially, the Fregat-Gaia composite will be placed in a lowaltitude parking orbit, after which a Fregat boost will inject the spacecraft into its transfer trajectory towards the second Lagrange ...
File
... H-R Diagrams • Just prior to World War I (1911 – 1913), two astronomers working separately had the same idea. They both determined a way to classify stars by both their temperature and absolute magnitude at the same time. ...
... H-R Diagrams • Just prior to World War I (1911 – 1913), two astronomers working separately had the same idea. They both determined a way to classify stars by both their temperature and absolute magnitude at the same time. ...
High Mass Stellar Evolution
... activate the controls. Along the bottom of the frame is a scale with a blue circle showing how far you are from the center of the black hole. The three line segments extending from the circle show the current field of view. Your left and right keyboard arrows should change the distance, and your up ...
... activate the controls. Along the bottom of the frame is a scale with a blue circle showing how far you are from the center of the black hole. The three line segments extending from the circle show the current field of view. Your left and right keyboard arrows should change the distance, and your up ...
STAR FORMATION (Ch. 19)
... called Sher 25. The star has a unique circumstellar ring of glowing gas that is a galactic twin to the famous ring around the supernova 1987A--see the image of SN 1987A in the next chapter. Near the center of the view is a so-called starburst cluster dominated by young, hot Wolf-Rayet stars and earl ...
... called Sher 25. The star has a unique circumstellar ring of glowing gas that is a galactic twin to the famous ring around the supernova 1987A--see the image of SN 1987A in the next chapter. Near the center of the view is a so-called starburst cluster dominated by young, hot Wolf-Rayet stars and earl ...
SSG Coordinators will be at the Cronan Ranch observing site at 5
... distant, M31 is one of the most distant objects visible to the unaided eye. The galaxy is tilted about 30 to our line of sight. With about 300 billion stars spread across a 130,000 light year disk, this is an object worth spending some time with. Of interest is that M31 is approaching us at about 1 ...
... distant, M31 is one of the most distant objects visible to the unaided eye. The galaxy is tilted about 30 to our line of sight. With about 300 billion stars spread across a 130,000 light year disk, this is an object worth spending some time with. Of interest is that M31 is approaching us at about 1 ...
Chapter 16
... mention his own life and career paths. • Kepler had originally planned on becoming a priest, but was drawn into the world of science. • Furthermore, he was of the Lutheran faith, which caused him many problems throughout his life, since Germany was part of the Holy Roman Empire until its dissolution ...
... mention his own life and career paths. • Kepler had originally planned on becoming a priest, but was drawn into the world of science. • Furthermore, he was of the Lutheran faith, which caused him many problems throughout his life, since Germany was part of the Holy Roman Empire until its dissolution ...
Characteristics of Stars
... Characteristics of Stars Use the following H-R diagram to answer questions 1-3. Write your answers in the spaces provided. ...
... Characteristics of Stars Use the following H-R diagram to answer questions 1-3. Write your answers in the spaces provided. ...
Oscillating White Dwarf Stars Background on White Dwarfs
... • In 1979 McGraw and collaborators discovered pulsations in the WD PG 1159-035 that showed multi-periodic variations like in ZZ Ceti stars, but it was much hotter T~150000 K • Post Asymptotic giant branch (AGB). A violent mixing event is induced by a helium flash in the post-AGB phase produces an en ...
... • In 1979 McGraw and collaborators discovered pulsations in the WD PG 1159-035 that showed multi-periodic variations like in ZZ Ceti stars, but it was much hotter T~150000 K • Post Asymptotic giant branch (AGB). A violent mixing event is induced by a helium flash in the post-AGB phase produces an en ...
Document
... parallax (p) of 1 arc second. 1 parsec = 3.26 light years. Also d = 1/p Closest star, Proxima centauri, p = 0.772 arc seconds. Hence distance ‘d’ in parsec is d = 1/p = 1/0.772 = 1.3 parsec = 4.2 light years ...
... parallax (p) of 1 arc second. 1 parsec = 3.26 light years. Also d = 1/p Closest star, Proxima centauri, p = 0.772 arc seconds. Hence distance ‘d’ in parsec is d = 1/p = 1/0.772 = 1.3 parsec = 4.2 light years ...
HR Diagram Activity
... 4. Shade other color columns as follows: Stars up to 5,000°C are orange-red; up to 6,000°C yellow; 6000°C to 10,000°C are white (don’t shade); up to 20,000°C blue-white, and up to 40,000°C blue. 5. Look for patterns in your graph. Compare it to the H-R diagram supplied by your teacher. 6. Label the ...
... 4. Shade other color columns as follows: Stars up to 5,000°C are orange-red; up to 6,000°C yellow; 6000°C to 10,000°C are white (don’t shade); up to 20,000°C blue-white, and up to 40,000°C blue. 5. Look for patterns in your graph. Compare it to the H-R diagram supplied by your teacher. 6. Label the ...
F p = Fraction of good stars with planets
... Graphical The message consists of 1679 bits, arranged into 73 lines of 23 characters per line (these are both prime numbers, and may help the aliens decode the message). It consists, among other things, of the Arecibo telescope, our solar system, DNA, a stick figure of a human, and some of the bioc ...
... Graphical The message consists of 1679 bits, arranged into 73 lines of 23 characters per line (these are both prime numbers, and may help the aliens decode the message). It consists, among other things, of the Arecibo telescope, our solar system, DNA, a stick figure of a human, and some of the bioc ...
neutron star - Livonia Public Schools
... Star Color and Temperature • Color is a clue to a star’s temperature. ...
... Star Color and Temperature • Color is a clue to a star’s temperature. ...
How Old is the Universe?
... oldest rocks on the Earth are found to be about 3.8 billion years old. For the meteorites, the oldest are 4.56 billion years old. This very well determined age is the age of the Solar System. ...
... oldest rocks on the Earth are found to be about 3.8 billion years old. For the meteorites, the oldest are 4.56 billion years old. This very well determined age is the age of the Solar System. ...
Unit 3 - Section 9.1 2011 Distances in Space0
... The stars do not shift very little when viewed from 300,000,000 kilometers apart A circle has 360O and each degree can be divided into 60 minutes…called “minutes of arc” so they are distinguished from a minute of time. Moreover, each minute of arc contains 60 “seconds of arc.” A parsecond (…or p ...
... The stars do not shift very little when viewed from 300,000,000 kilometers apart A circle has 360O and each degree can be divided into 60 minutes…called “minutes of arc” so they are distinguished from a minute of time. Moreover, each minute of arc contains 60 “seconds of arc.” A parsecond (…or p ...
doc - EU-HOU
... 11. We have measured the amplitude W of the observed variation in the star’s radial velocity. The true rotation speed is larger than W, as can be seen in this figure, due to the possible inclination of the orbit to the line-of-sight, indicated by the angle i. Hence the true rotation speed of the sta ...
... 11. We have measured the amplitude W of the observed variation in the star’s radial velocity. The true rotation speed is larger than W, as can be seen in this figure, due to the possible inclination of the orbit to the line-of-sight, indicated by the angle i. Hence the true rotation speed of the sta ...
answers
... Stop at 1:08, where it says how do astrophysicists figure that out? After the table exercise below watch until 2:34 for a good review and introduction of parallax and standard candles and stop at 2:27. Watch the rest after the light investigations for another 2.5 minutes of Cepheid variable, type 1A ...
... Stop at 1:08, where it says how do astrophysicists figure that out? After the table exercise below watch until 2:34 for a good review and introduction of parallax and standard candles and stop at 2:27. Watch the rest after the light investigations for another 2.5 minutes of Cepheid variable, type 1A ...
Lecture Note
... Distances to the nearer stars can be determined by parallax, the apparent shift of a star against the background stars observed as the Earth moves along its orbit ...
... Distances to the nearer stars can be determined by parallax, the apparent shift of a star against the background stars observed as the Earth moves along its orbit ...
Constellations - Brown University Wiki
... 4)a) Set your planimeter for midnight January 1. Notice that the visible sky is identical to the one on February 1 at 10 p.m. and at March 2 at 8 p.m.. Prove that this is to be expected, by making a sketch of the rotating and orbiting earth. b) Rotate the disc from midnight January 1 forward, to la ...
... 4)a) Set your planimeter for midnight January 1. Notice that the visible sky is identical to the one on February 1 at 10 p.m. and at March 2 at 8 p.m.. Prove that this is to be expected, by making a sketch of the rotating and orbiting earth. b) Rotate the disc from midnight January 1 forward, to la ...
1 - UCSC Physics - University of California, Santa Cruz
... some of the most bizarre predictions of general relativity. The two pulsars in the J0737-3039 system are actually very far apart compared to their sizes. In a true scale model, if the pulsars were the sizes of marbles, they would be about 750 feet (225 meters) apart. Albert Einstein's 90-year-old ge ...
... some of the most bizarre predictions of general relativity. The two pulsars in the J0737-3039 system are actually very far apart compared to their sizes. In a true scale model, if the pulsars were the sizes of marbles, they would be about 750 feet (225 meters) apart. Albert Einstein's 90-year-old ge ...
Lecture 9
... • Each difference of five magnitudes represents a factor of 100 in brightness • A few objects have magnitudes less than 1 • Absolute magnitude describes stellar luminosities – Its what the stars apparent magnitude would be if it were 10 parsecs away ...
... • Each difference of five magnitudes represents a factor of 100 in brightness • A few objects have magnitudes less than 1 • Absolute magnitude describes stellar luminosities – Its what the stars apparent magnitude would be if it were 10 parsecs away ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.