Test 1 - History of Astronomy and Planetary Motion - ppt
... Evidence of Rotation: Foucault’s Pendulum ...
... Evidence of Rotation: Foucault’s Pendulum ...
Stars part 2
... Stellar Formation and Life Cycle Stars are theorized to evolve through six stages of development… 1. Protostar Stage – the gravitational collapse of a gaseous cloud mass. • The collapse may be triggered by the passing of, the eruption of, or the explosion of a near-by star. • Energy production is d ...
... Stellar Formation and Life Cycle Stars are theorized to evolve through six stages of development… 1. Protostar Stage – the gravitational collapse of a gaseous cloud mass. • The collapse may be triggered by the passing of, the eruption of, or the explosion of a near-by star. • Energy production is d ...
Is the central binary system of the planetary nebula Henize 2
... interestingly, in the study by Weidmann and Gamen (2011) there are several PNe that show a wide He II 5412 Å absorption line with a weak emission feature in the center of the wide absorption line. This forms a spectral structure similar to that of Henize 2–428. The most noticeable examples of this ...
... interestingly, in the study by Weidmann and Gamen (2011) there are several PNe that show a wide He II 5412 Å absorption line with a weak emission feature in the center of the wide absorption line. This forms a spectral structure similar to that of Henize 2–428. The most noticeable examples of this ...
Chapter 1 Our Place in the Universe
... B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. ...
... B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. ...
The Milky Way Galaxy
... To determine the rotation curve of the Galaxy, we will introduce a more convenient coordinate system, called the Galactic coordinate system. Note that the plane of the solar system is not the same as the plane of the Milky Way disk, and the Earth itself is tipped with respect to the plane of the sol ...
... To determine the rotation curve of the Galaxy, we will introduce a more convenient coordinate system, called the Galactic coordinate system. Note that the plane of the solar system is not the same as the plane of the Milky Way disk, and the Earth itself is tipped with respect to the plane of the sol ...
Searching for Dwarf Galaxies and Population III Star
... images that reveal the most massive star-forming galaxies and proto-clusters of galaxies at z > 7. We will identify the most luminous at z ~ 7.7, where Lyman falls in an atmospheric window between night sky lines, and conduct a narrowband imaging search with IRMS. Using current state-of-the-art mo ...
... images that reveal the most massive star-forming galaxies and proto-clusters of galaxies at z > 7. We will identify the most luminous at z ~ 7.7, where Lyman falls in an atmospheric window between night sky lines, and conduct a narrowband imaging search with IRMS. Using current state-of-the-art mo ...
Explosion and remnants of massive stars
... etc) in more external layers. The total energy released by nuclear burning is of order 10 51 erg, which is sufficient to overcome the binding energy of the white dwarf in the explosion. Therefore no stellar remnant is left. The lightcurve of a Type Ia supernova is powered by the radioactive decay o ...
... etc) in more external layers. The total energy released by nuclear burning is of order 10 51 erg, which is sufficient to overcome the binding energy of the white dwarf in the explosion. Therefore no stellar remnant is left. The lightcurve of a Type Ia supernova is powered by the radioactive decay o ...
The Universe - Smithsonian Education
... Pluto is hardly dominant. If it were set down on the surface of Earth, it would barely cover India. The loss of Pluto had been offset by the discovery of planets outside of our solar system. Since the time of Galileo, when the Sun was found to be a star, astronomers have thought it likely that other ...
... Pluto is hardly dominant. If it were set down on the surface of Earth, it would barely cover India. The loss of Pluto had been offset by the discovery of planets outside of our solar system. Since the time of Galileo, when the Sun was found to be a star, astronomers have thought it likely that other ...
5 - White Dwarfs - University of Texas Astronomy
... then did the white dwarf form in the first place? The separation must have been large so that the progenitor of the white dwarf could form a well-developed core-envelope structure and become a red giant before mass transfer began. If the stars were very close together originally, the big star would ...
... then did the white dwarf form in the first place? The separation must have been large so that the progenitor of the white dwarf could form a well-developed core-envelope structure and become a red giant before mass transfer began. If the stars were very close together originally, the big star would ...
Wednesday, Oct. 22
... Pressure in a gas is caused by the particles in the gas bouncing off of the walls of its container. In a normal gas the speed of the particles is determined by the temperature. In a very dense gas of electrons, quantum mechanics provides an additional reason for the electrons to move. The uncertaint ...
... Pressure in a gas is caused by the particles in the gas bouncing off of the walls of its container. In a normal gas the speed of the particles is determined by the temperature. In a very dense gas of electrons, quantum mechanics provides an additional reason for the electrons to move. The uncertaint ...
Powerpoint Presentation (large file)
... neutron stars produce novae and bursters • Material from an ordinary star in a close binary can fall onto the surface of the companion white dwarf or neutron star to produce a surface layer in which thermonuclear reactions can explosively ignite • Explosive hydrogen fusion may occur in the surface l ...
... neutron stars produce novae and bursters • Material from an ordinary star in a close binary can fall onto the surface of the companion white dwarf or neutron star to produce a surface layer in which thermonuclear reactions can explosively ignite • Explosive hydrogen fusion may occur in the surface l ...
Additional Cosmology Images
... A cauldron of stars at the Galaxy's center. This dazzling infrared image from NASA's Spitzer Space Telescope shows hundreds of thousands of stars crowded into the swirling core of our spiral Milky Way. In visible-light pictures, this region cannot be seen at all because dust lying between Earth and ...
... A cauldron of stars at the Galaxy's center. This dazzling infrared image from NASA's Spitzer Space Telescope shows hundreds of thousands of stars crowded into the swirling core of our spiral Milky Way. In visible-light pictures, this region cannot be seen at all because dust lying between Earth and ...
OBJXlab-JCU_Alt
... many fields of science, discovery implies finding something that is hidden out of sight, such as digging up a fossil hidden under layers of clay, discovering the chemical structure of an enzyme, or traveling to the heart of the rainforest to photograph a previously unknown species of songbird. But h ...
... many fields of science, discovery implies finding something that is hidden out of sight, such as digging up a fossil hidden under layers of clay, discovering the chemical structure of an enzyme, or traveling to the heart of the rainforest to photograph a previously unknown species of songbird. But h ...
SBA_2 - Armagh Observatory
... key to success is increasing photon counts, and that having collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe tha ...
... key to success is increasing photon counts, and that having collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe tha ...
Bagnulo_2 - Armagh Observatory
... counts, and that having collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of ...
... counts, and that having collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of ...
Chapter 15
... shaped disturbances traveling through the disk of the galaxy that compressed gas and ...
... shaped disturbances traveling through the disk of the galaxy that compressed gas and ...
Stellar Physics
... introduction of the Properties of stars and the Stellar evolution topics as specified in the Rotational Motion and Astrophysics unit of the new Advanced Higher arrangements for physics. To see where each section corresponds to the Arrangements document, the headings and sub-headings correspond to th ...
... introduction of the Properties of stars and the Stellar evolution topics as specified in the Rotational Motion and Astrophysics unit of the new Advanced Higher arrangements for physics. To see where each section corresponds to the Arrangements document, the headings and sub-headings correspond to th ...
Physics 11 Fall 2012 Practice Problems 7 - Solutions
... planets outside the solar system. Since 1996, more than 100 planets have been detected orbiting stars other than the Sun. While the planets themselves cannot be seen directly, telescopes can detect the small periodic motion of the star as the star and planet orbit around their common center of mass. ...
... planets outside the solar system. Since 1996, more than 100 planets have been detected orbiting stars other than the Sun. While the planets themselves cannot be seen directly, telescopes can detect the small periodic motion of the star as the star and planet orbit around their common center of mass. ...
The Sky This Month Mar Apr 2015
... Mercury is in a poor morning apparition due to the shallow ecliptic, reaches superior conjunction on April 10th, and then moves into an excellent evening apparition starting after mid-April. It has a loose grouping with Mars and the young Moon (2% illum.) on April 19th. On April 22nd it approaches t ...
... Mercury is in a poor morning apparition due to the shallow ecliptic, reaches superior conjunction on April 10th, and then moves into an excellent evening apparition starting after mid-April. It has a loose grouping with Mars and the young Moon (2% illum.) on April 19th. On April 22nd it approaches t ...
Lecture 18
... Initial mass M0 = 10 Solar masses Final mass M= 10 x exp(109 / 4.5 x 107) = 4 x 1010 Solar masses Conclude: if the record breaking quasars at z > 6 have black hole masses of ~ 1010 Solar masses, and are being seen when the Universe was about 1 Gyr old, just enough time for them to have grown from sm ...
... Initial mass M0 = 10 Solar masses Final mass M= 10 x exp(109 / 4.5 x 107) = 4 x 1010 Solar masses Conclude: if the record breaking quasars at z > 6 have black hole masses of ~ 1010 Solar masses, and are being seen when the Universe was about 1 Gyr old, just enough time for them to have grown from sm ...
Document
... H-R diagrams are useful because they help astronomers categorize stars into groups: Main sequence stars, like the Sun, are in a very stable part of their life cycle. White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and bright and some can be seen witho ...
... H-R diagrams are useful because they help astronomers categorize stars into groups: Main sequence stars, like the Sun, are in a very stable part of their life cycle. White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and bright and some can be seen witho ...
Theory of the Infinite Universe
... Nuclear fusion occurs when two elements are fused together to form a heavier element. This process releases energy. Massive stars begin as a giant ball of burning hydrogen. Over time the compos ...
... Nuclear fusion occurs when two elements are fused together to form a heavier element. This process releases energy. Massive stars begin as a giant ball of burning hydrogen. Over time the compos ...
PDF format
... It is 11:59 pm on September 12. • At midnight the day increases by one • Crossing IDL westbound increases the day by one • Two minutes later it is 12:01 am on September 14. ...
... It is 11:59 pm on September 12. • At midnight the day increases by one • Crossing IDL westbound increases the day by one • Two minutes later it is 12:01 am on September 14. ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.