Penn State Astronomy 11 Laboratory
... Space has been left at the bottom as your instructor may suggest other objects, such as planets or comets, which are only visible at special times. Also note that the shapes of these constellations are subject to interpretation. The constellation of Ursa Major has been identified both as a large an ...
... Space has been left at the bottom as your instructor may suggest other objects, such as planets or comets, which are only visible at special times. Also note that the shapes of these constellations are subject to interpretation. The constellation of Ursa Major has been identified both as a large an ...
Chapter 17 Star Stuff Agenda How does a star`s mass affect nuclear
... Planetary Nebulae • Double-shell burning ends with a pulse that ejects the H and He into space as a planetary nebula • The core left behind becomes a white dwarf ...
... Planetary Nebulae • Double-shell burning ends with a pulse that ejects the H and He into space as a planetary nebula • The core left behind becomes a white dwarf ...
PPTX
... • Present-day spectra show that star is hot again, with high-excitation emission including C IV. Current Teff ~ 95000 K • V605 Aql was a hot WD that underwent a ...
... • Present-day spectra show that star is hot again, with high-excitation emission including C IV. Current Teff ~ 95000 K • V605 Aql was a hot WD that underwent a ...
How to Directly Image a Habitable Planet Around Alpha Centauri
... contrast space telescopes (blue region in Figure 1) appear to be necessary. High contrast space telescopes in the 1 - 2.4m size range are realistic for launch in the 2020 decade, such as NASA’s planned WFIRST-AFTA mission [1], as well as the Exo-C and Exo-S concept studies [2, 3]. Such telescopes ca ...
... contrast space telescopes (blue region in Figure 1) appear to be necessary. High contrast space telescopes in the 1 - 2.4m size range are realistic for launch in the 2020 decade, such as NASA’s planned WFIRST-AFTA mission [1], as well as the Exo-C and Exo-S concept studies [2, 3]. Such telescopes ca ...
Neutron Stars and Black Holes
... 16. Which of the following describes the gravitational red shift? a. The reddening of starlight by interstellar dust grains. b. A reduction in the energy of photons as they move away from objects. c. The angular change in a star's position when observed during a solar eclipse. d. The alternating Dop ...
... 16. Which of the following describes the gravitational red shift? a. The reddening of starlight by interstellar dust grains. b. A reduction in the energy of photons as they move away from objects. c. The angular change in a star's position when observed during a solar eclipse. d. The alternating Dop ...
The Magnitude System
... The Magnitude System The magnitude system is invented by Hipparchus in 120 BC, and is still used today, although the magnitude scale itself is not a meaningful “physical quantity” (it is just a scale). Initially this system was arbitrary because Hipparchus decided that all the brightest and most bea ...
... The Magnitude System The magnitude system is invented by Hipparchus in 120 BC, and is still used today, although the magnitude scale itself is not a meaningful “physical quantity” (it is just a scale). Initially this system was arbitrary because Hipparchus decided that all the brightest and most bea ...
2. The Anatomy of Stellar Life and Death
... electrons and nuclei. As the number of particles decreases the pressure provided by their constant movement within the core decreases, and the core is forced to contract to compensate. Gases that contract heat up, and so throughout the main sequence the temperature in the core of a star increases. T ...
... electrons and nuclei. As the number of particles decreases the pressure provided by their constant movement within the core decreases, and the core is forced to contract to compensate. Gases that contract heat up, and so throughout the main sequence the temperature in the core of a star increases. T ...
November, 2015 - The Baton Rouge Astronomical Society
... stars with a separation of 1.8 arc-seconds, and an orbital period of 933 years. Fum al Samakah (Beta Psc), “Mouth of the Fish”, mag. 4.48, 23 03 52.61 +03 49 12.3, is a blue-white, main sequence star. Simmah (Gamma Psc), mag. 3.70, 23 17 09.49 +03 16 56.1, is a yellow giant star, is in the asterism ...
... stars with a separation of 1.8 arc-seconds, and an orbital period of 933 years. Fum al Samakah (Beta Psc), “Mouth of the Fish”, mag. 4.48, 23 03 52.61 +03 49 12.3, is a blue-white, main sequence star. Simmah (Gamma Psc), mag. 3.70, 23 17 09.49 +03 16 56.1, is a yellow giant star, is in the asterism ...
Learning goals for Astronomy`s Final 2013
... 46. Explain the importance of the discovery of the cosmic background radiation (strong evidence that supports the model of the Big Bang) 47. Explain the importance of COBE’s discoveries, as well as WMAP and Planck(the inhomogeneity of the CMB) ...
... 46. Explain the importance of the discovery of the cosmic background radiation (strong evidence that supports the model of the Big Bang) 47. Explain the importance of COBE’s discoveries, as well as WMAP and Planck(the inhomogeneity of the CMB) ...
Astronomy 112: The Physics of Stars Class 14 Notes: The Main
... Of course this argument is a bit of a cheat: the way we got the homology argument in the first place is by assuming a particular scaling for the nuclear reaction rate with temperature ν, and, if the temperature gets too low, ν will change. Thus the limit is a bit more complicated. Nonetheless, this ...
... Of course this argument is a bit of a cheat: the way we got the homology argument in the first place is by assuming a particular scaling for the nuclear reaction rate with temperature ν, and, if the temperature gets too low, ν will change. Thus the limit is a bit more complicated. Nonetheless, this ...
Written Transcript of this video lesson
... So if we come back now that you understand a little bit about how force makes something move in a circle, here’s our star and it’s moving like this at some radius from the center of the galaxy. And one thing you probably learned in your elementary physics studies is that if we look at this star, it’ ...
... So if we come back now that you understand a little bit about how force makes something move in a circle, here’s our star and it’s moving like this at some radius from the center of the galaxy. And one thing you probably learned in your elementary physics studies is that if we look at this star, it’ ...
December 2011
... Way. If binoculars are used to sweep through Cassiopeia what looks like clouds of stars can be seen. These are the stars in the arms of our galaxy ‘The Milky Way’. Cassiopeia is circumpolar this means it is always visible in a clear night sky because it does not set below the horizon. It is also use ...
... Way. If binoculars are used to sweep through Cassiopeia what looks like clouds of stars can be seen. These are the stars in the arms of our galaxy ‘The Milky Way’. Cassiopeia is circumpolar this means it is always visible in a clear night sky because it does not set below the horizon. It is also use ...
Lithium abundances along the red giant branch: FLAMES
... agreed with the expected value for the difference in heliocentric correction, and the same shift was found for all spectra obtained at a given time. Therefore, we can exclude that these shifts are the result of orbital motion in a binary system. No other velocity shifts were found within the accuracy ...
... agreed with the expected value for the difference in heliocentric correction, and the same shift was found for all spectra obtained at a given time. Therefore, we can exclude that these shifts are the result of orbital motion in a binary system. No other velocity shifts were found within the accuracy ...
Distance Measures: Parallax
... this background? This is because the center of your eyes are a few centimeters apart from each other, so each eye as a different point of view. Because stars are SO far away, their parallaxes are most conveniently measured in seconds of arc (arc seconds). The angular size of your thumb held at arm’s ...
... this background? This is because the center of your eyes are a few centimeters apart from each other, so each eye as a different point of view. Because stars are SO far away, their parallaxes are most conveniently measured in seconds of arc (arc seconds). The angular size of your thumb held at arm’s ...
Distance Measures: Parallax
... this background? This is because the center of your eyes are a few centimeters apart from each other, so each eye as a different point of view. Because stars are SO far away, their parallaxes are most conveniently measured in seconds of arc (arc seconds). The angular size of your thumb held at arm’s ...
... this background? This is because the center of your eyes are a few centimeters apart from each other, so each eye as a different point of view. Because stars are SO far away, their parallaxes are most conveniently measured in seconds of arc (arc seconds). The angular size of your thumb held at arm’s ...
Notes for Class 7, March 2
... should answer this question with a core concept or idea, perhaps with dependent parts, and illustrated by referring to course experiences, such as labs and discussions, and materials, such as readings, notes, lab materials, and so on. A starting point is the “Course Description” section in the Sylla ...
... should answer this question with a core concept or idea, perhaps with dependent parts, and illustrated by referring to course experiences, such as labs and discussions, and materials, such as readings, notes, lab materials, and so on. A starting point is the “Course Description” section in the Sylla ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.