Star Clusters - Caltech Astronomy
... to the difference in distance modulus between the two. There may also be additional shifts in magnitude and color index resulting from interstellar absorption. The general procedure is to apply the effects of absorption, if known, and then slide the diagrams of the two clusters until they match, acc ...
... to the difference in distance modulus between the two. There may also be additional shifts in magnitude and color index resulting from interstellar absorption. The general procedure is to apply the effects of absorption, if known, and then slide the diagrams of the two clusters until they match, acc ...
Ch 33) Astrophysics and Cosmology
... For specifying distances to the Sun and Moon, we usually use meters or kilometers, but we could specify them in terms of light seconds or minutes. The Earth–Moon distance is 384,000 km, which is 1.28 light-seconds. The Earth–Sun distance is 1.50 * 1011 m, or 150,000,000 km; this is equal to 8.3 ligh ...
... For specifying distances to the Sun and Moon, we usually use meters or kilometers, but we could specify them in terms of light seconds or minutes. The Earth–Moon distance is 384,000 km, which is 1.28 light-seconds. The Earth–Sun distance is 1.50 * 1011 m, or 150,000,000 km; this is equal to 8.3 ligh ...
instruction manual - NexStar Resource Site
... the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your StarSeeker, so you should keep this manual handy until you h ...
... the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your StarSeeker, so you should keep this manual handy until you h ...
Early Star-Forming Galaxies
... Rodighiero used Herschel ’s far-infrared camera to look for galaxies hidden from visible-light observations because of their intervening dust. This allowed the astronomers to assemble a more complete picture of star birth than ever before. The team targeted two well-known regions of the sky that ha ...
... Rodighiero used Herschel ’s far-infrared camera to look for galaxies hidden from visible-light observations because of their intervening dust. This allowed the astronomers to assemble a more complete picture of star birth than ever before. The team targeted two well-known regions of the sky that ha ...
NAS biographical memoir of Martin Schwarzschild
... to burn its nuclear fuel through a sequence of phases: main sequence (like the sun) to red giant (like our neighbor Arcturus) to degenerate dwarf (like another neighbor, Sirius B). By now there have been innumerable quantitative tests of the theory. And it works! A normal star of mass similar to tha ...
... to burn its nuclear fuel through a sequence of phases: main sequence (like the sun) to red giant (like our neighbor Arcturus) to degenerate dwarf (like another neighbor, Sirius B). By now there have been innumerable quantitative tests of the theory. And it works! A normal star of mass similar to tha ...
The Marine Sextant
... • A sextant is used to determine the sextant altitude (hs) of a celestial body. • First, we have to decide which stars to observe; this is done using a Rude Starfinder or other methods. • When making an observation, the star should look as shown in the next slide... ...
... • A sextant is used to determine the sextant altitude (hs) of a celestial body. • First, we have to decide which stars to observe; this is done using a Rude Starfinder or other methods. • When making an observation, the star should look as shown in the next slide... ...
Formation and Detectability of Terrestrial Planets around
... The initial conditions of the circumstellar disk in our simulations mimic conditions at the onset of the chaotic growth phase of terrestrial planet formation (Kokubo & Ida 1998; Kenyon & Bromley 2006) in which collisions of isolated embryos, protoplanets of approximately lunar mass, dominate the evo ...
... The initial conditions of the circumstellar disk in our simulations mimic conditions at the onset of the chaotic growth phase of terrestrial planet formation (Kokubo & Ida 1998; Kenyon & Bromley 2006) in which collisions of isolated embryos, protoplanets of approximately lunar mass, dominate the evo ...
offprint - UW-Madison Astronomy - University of Wisconsin–Madison
... stellar structure and also how stars evolve in time. This framework strives to include stars of all types, e.g., low-metallicity stars of the early universe, massive stars that will become supernovae, low-mass brown dwarfs as well as stars like our Sun. As a basic rule, our understanding is stronges ...
... stellar structure and also how stars evolve in time. This framework strives to include stars of all types, e.g., low-metallicity stars of the early universe, massive stars that will become supernovae, low-mass brown dwarfs as well as stars like our Sun. As a basic rule, our understanding is stronges ...
HWWS 2010 - Monash University
... demonstrating that the supernova blast may not always disrupt the system • Should the stellar companion subsequently evolve to fill its Roche lobe, accretion will commence (also via stellar winds) • Accreted gas is heated by liberated gravitational potential energy to ~107 K or so -> X-ray emission ...
... demonstrating that the supernova blast may not always disrupt the system • Should the stellar companion subsequently evolve to fill its Roche lobe, accretion will commence (also via stellar winds) • Accreted gas is heated by liberated gravitational potential energy to ~107 K or so -> X-ray emission ...
- National Optical Astronomy Observatory
... the more massive nickel particles, and the nickel had no other outside force causing its motion, then the transfer of energy would result in the nickel moving with less speed than the Iron. If the data is accurate then there must be an unknown mechanism for the nickels particle’s flow. The data may ...
... the more massive nickel particles, and the nickel had no other outside force causing its motion, then the transfer of energy would result in the nickel moving with less speed than the Iron. If the data is accurate then there must be an unknown mechanism for the nickels particle’s flow. The data may ...
Supernovae, Neutrinos, and the Chirality of the Amino Acids
... the laboratory [52, 53]. A subsequent study [54] confirmed the possibility of autocatalysis, and did so in an environment that was relevant to amino acid autocatalysis. Ref. [55] showed that the amino acid enantiomerism could be amplified by successive evaporations to precipitate the racemate, with ...
... the laboratory [52, 53]. A subsequent study [54] confirmed the possibility of autocatalysis, and did so in an environment that was relevant to amino acid autocatalysis. Ref. [55] showed that the amino acid enantiomerism could be amplified by successive evaporations to precipitate the racemate, with ...
Testing - uwyo.edu
... • Contraction stops when the energy released by core fusion balances energy radiated from the surface—the star is now a main-sequence star. © 2010 Pearson Education, Inc. ...
... • Contraction stops when the energy released by core fusion balances energy radiated from the surface—the star is now a main-sequence star. © 2010 Pearson Education, Inc. ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.