Stars and Galaxies part 3
... with respect to more distant objects behind it. This is because your eyes are separated from each other by a few inches - so each eye sees the finger in front of you from a slightly different angle. The amount your finger seems to shift is called its "parallax". ...
... with respect to more distant objects behind it. This is because your eyes are separated from each other by a few inches - so each eye sees the finger in front of you from a slightly different angle. The amount your finger seems to shift is called its "parallax". ...
Motions of the Celestial Sphere
... Descriptions of Celestial Sphere • Zenith-directly overhead • Meridian – imaginary line running north & south through the zenith • Horizon – where the sky appears to intersect the ground. • Altitude – height of a star above horizon (degrees). The sky appear like a dome overhead. ...
... Descriptions of Celestial Sphere • Zenith-directly overhead • Meridian – imaginary line running north & south through the zenith • Horizon – where the sky appears to intersect the ground. • Altitude – height of a star above horizon (degrees). The sky appear like a dome overhead. ...
a star is born reading
... years. It will take that long to cool off. As it cools, it will become a white dwarf. Once it stops glowing, it will become a black dwarf. There are no known black dwarfs in our universe. Blue giant stars are very bright and very hot. They burn fuel very quickly. It runs out in ten thousand to 100 t ...
... years. It will take that long to cool off. As it cools, it will become a white dwarf. Once it stops glowing, it will become a black dwarf. There are no known black dwarfs in our universe. Blue giant stars are very bright and very hot. They burn fuel very quickly. It runs out in ten thousand to 100 t ...
www.NewYorkScienceTeacher.org/review
... b. 22.2 years d. 11.4 years What causes the dark bands observed in a solar spectrum? a. the emission of specific elements b. different chemical elements which absorb light at specific wavelengths c. highly compressed, glowing gas d. warmer gas in front of a source that emits a continuous spectrum Th ...
... b. 22.2 years d. 11.4 years What causes the dark bands observed in a solar spectrum? a. the emission of specific elements b. different chemical elements which absorb light at specific wavelengths c. highly compressed, glowing gas d. warmer gas in front of a source that emits a continuous spectrum Th ...
Life Cycle of a Star
... temperature of each star by its outer most layer or its photosphere. O stars, which are the hottest of the seven categories, are blue in color. M stars, which are the coolest, are red. Within the range of this spectrum, there are yellow or orange stars (like our sun which is a G star) and white star ...
... temperature of each star by its outer most layer or its photosphere. O stars, which are the hottest of the seven categories, are blue in color. M stars, which are the coolest, are red. Within the range of this spectrum, there are yellow or orange stars (like our sun which is a G star) and white star ...
proper motion
... will last only 30 million years. A star with 0.25 solar masses can last 320 billion years. ...
... will last only 30 million years. A star with 0.25 solar masses can last 320 billion years. ...
Stellar Evolution 1 Star Formation 2 Nebulae
... tends to compress the star into a smaller volume), and gas pressure (which tends to expand the star into a larger volume. For the long middle period of a star’s life, these two opposing forces balance, and so the star is in a fairly constant state. The birth and death phases of a star’s life are typ ...
... tends to compress the star into a smaller volume), and gas pressure (which tends to expand the star into a larger volume. For the long middle period of a star’s life, these two opposing forces balance, and so the star is in a fairly constant state. The birth and death phases of a star’s life are typ ...
Star Maps and Constellations (pdf 3.7 Megs)
... anything to do with a crab, it's an alternative (older?) interpretation of the constellation. Often times the name of the star is Arabic, which will have to do then with an Arabic interpretation of the constellation.3 In fact you'll note that the majority of star names are Arabic in origin. Further, ...
... anything to do with a crab, it's an alternative (older?) interpretation of the constellation. Often times the name of the star is Arabic, which will have to do then with an Arabic interpretation of the constellation.3 In fact you'll note that the majority of star names are Arabic in origin. Further, ...
Apparent Magnitude
... gravitational field is so powerful that nothing can escape after having fallen past the event horizon. The name comes from the fact that even electromagnetic radiation is unable to escape, rendering the interior invisible. However, black holes can be detected if they interact with matter outside the ...
... gravitational field is so powerful that nothing can escape after having fallen past the event horizon. The name comes from the fact that even electromagnetic radiation is unable to escape, rendering the interior invisible. However, black holes can be detected if they interact with matter outside the ...
wk9 (part 1)
... to produce protons and neutrons, while matter and radiation continued to interact strongly B. The Universe was matter dominated at this epoch C. Protons and electrons formed stable hydrogen atoms for the first time at this epoch, and the matter in the Universe became mostly transparent to radiation ...
... to produce protons and neutrons, while matter and radiation continued to interact strongly B. The Universe was matter dominated at this epoch C. Protons and electrons formed stable hydrogen atoms for the first time at this epoch, and the matter in the Universe became mostly transparent to radiation ...
30-2 Directed Reading
... c. a hot, extremely dense core of matter leftover from an old star d. a cool, extremely dense core of matter leftover from a red giant _____ 23. Where are white dwarfs located on the H-R diagram? a. in the lower left b. in the lower right c. in the upper left d. in the upper right _____ 24. An explo ...
... c. a hot, extremely dense core of matter leftover from an old star d. a cool, extremely dense core of matter leftover from a red giant _____ 23. Where are white dwarfs located on the H-R diagram? a. in the lower left b. in the lower right c. in the upper left d. in the upper right _____ 24. An explo ...
Presentation for perspective graduate students 2006
... To determine stellar mases we rely on binary star systems. As seen from Earth, the two stars that make up this binary system are separated by less than 1/3 arcsecond. For simplicity, the diagram shows one star as remaining stationary; in reality, both stars move around their common center of mass ...
... To determine stellar mases we rely on binary star systems. As seen from Earth, the two stars that make up this binary system are separated by less than 1/3 arcsecond. For simplicity, the diagram shows one star as remaining stationary; in reality, both stars move around their common center of mass ...
Cosmic Distance Ladder
... distance from the Sun in terms of the distance of the Earth from the Sun, an accurate absolute value of this distance had not been calculated. Astronomical Unit (AU): The Earth-Sun distance = 150 Million km=1.5E13 cm ...
... distance from the Sun in terms of the distance of the Earth from the Sun, an accurate absolute value of this distance had not been calculated. Astronomical Unit (AU): The Earth-Sun distance = 150 Million km=1.5E13 cm ...
Astronomy 1 – Winter 2011
... To determine stellar mases we rely on binary star systems. As seen from Earth, the two stars that make up this binary system are separated by less than 1/3 arcsecond. For simplicity, the diagram shows one star as remaining stationary; in reality, both stars move around their common center of mass ...
... To determine stellar mases we rely on binary star systems. As seen from Earth, the two stars that make up this binary system are separated by less than 1/3 arcsecond. For simplicity, the diagram shows one star as remaining stationary; in reality, both stars move around their common center of mass ...
Dark Skies Above Downeast Maine
... during the early hours of January 3rd. The Quadrantids have a very small window for when the meteors peak, so be on the alert. The shower is good for 60 to 80 meteors per hour. It has bee ...
... during the early hours of January 3rd. The Quadrantids have a very small window for when the meteors peak, so be on the alert. The shower is good for 60 to 80 meteors per hour. It has bee ...
Questions for this book (Word format)
... 3. Why does the Sun produce neutrinos? When this book was written in 1985, there was only one solar neutrino detector, Ray Davis’ 37Cl-based Homestake experiment. What is the current state of solar neutrino detection, and what is the favoured interpretation? 4. What are the observed properties of a ...
... 3. Why does the Sun produce neutrinos? When this book was written in 1985, there was only one solar neutrino detector, Ray Davis’ 37Cl-based Homestake experiment. What is the current state of solar neutrino detection, and what is the favoured interpretation? 4. What are the observed properties of a ...
Reading the Stars
... 1. Examine color-magnitude diagrams of clusters of stars. Since a cluster of stars is a group of stars that were formed at the same time from the same cloud of gas and dust, we can learn a lot about the stars within that cluster. A color-magnitude diagram is a kind of H-R Diagram. The horizontal axi ...
... 1. Examine color-magnitude diagrams of clusters of stars. Since a cluster of stars is a group of stars that were formed at the same time from the same cloud of gas and dust, we can learn a lot about the stars within that cluster. A color-magnitude diagram is a kind of H-R Diagram. The horizontal axi ...
Introduction to the sky
... Just as we describe the location of a place on Earth by its latitude and longitude, we can specify the location of a star on the celestial sphere by its right ascension and declination. ...
... Just as we describe the location of a place on Earth by its latitude and longitude, we can specify the location of a star on the celestial sphere by its right ascension and declination. ...
Introduction to the sky
... Just as we describe the location of a place on Earth by its latitude and longitude, we can specify the location of a star on the celestial sphere by its right ascension and declination. ...
... Just as we describe the location of a place on Earth by its latitude and longitude, we can specify the location of a star on the celestial sphere by its right ascension and declination. ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.