Eye in the sky - Academy of Science of South Africa
... SALT is an exciting work environment because of the constant need to innovate and come up with new and more efficient solutions to problems ranging from the mechanical and electronic, to optical and software engineering, and obviously astronomical. Professionals from these various fields, as well as ...
... SALT is an exciting work environment because of the constant need to innovate and come up with new and more efficient solutions to problems ranging from the mechanical and electronic, to optical and software engineering, and obviously astronomical. Professionals from these various fields, as well as ...
Neutron Stars
... neutron star compresses at least 1.4M into a sphere only about 10-16 km across. This material is crushed together so tightly that gravity overcomes the repulsive force between negatively charged electrons and positively charged protons. The resulting structure of the star is complex, with a solid c ...
... neutron star compresses at least 1.4M into a sphere only about 10-16 km across. This material is crushed together so tightly that gravity overcomes the repulsive force between negatively charged electrons and positively charged protons. The resulting structure of the star is complex, with a solid c ...
Description of Pictures In the Dome
... cultures and traditions. The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the al ...
... cultures and traditions. The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the al ...
Spectroscopy: Unlocking the Secrets of Star Light
... Light entering a spectrograph can be split or dispersed into a spectrum by one of two means, using a prism or a diffraction grating. When Newton split light into a spectrum in the 1660s he used a glass prism. School students often use perspex prisms from ray box kits to disperse or "split" white lig ...
... Light entering a spectrograph can be split or dispersed into a spectrum by one of two means, using a prism or a diffraction grating. When Newton split light into a spectrum in the 1660s he used a glass prism. School students often use perspex prisms from ray box kits to disperse or "split" white lig ...
06_Testbank - Lick Observatory
... 5) Which of the following statements best describes the two principal advantages of telescopes over eyes? A) Telescopes can collect far more light with far better angular resolution. B) Telescopes can collect far more light with far greater magnification. C) Telescopes have much more magnification ...
... 5) Which of the following statements best describes the two principal advantages of telescopes over eyes? A) Telescopes can collect far more light with far better angular resolution. B) Telescopes can collect far more light with far greater magnification. C) Telescopes have much more magnification ...
Spectroscopy: Unlocking the Secrets of Star Light
... Light entering a spectrograph can be split or dispersed into a spectrum by one of two means, using a prism or a diffraction grating. When Newton split light into a spectrum in the 1660s he used a glass prism. School students often use perspex prisms from ray box kits to disperse or "split" white lig ...
... Light entering a spectrograph can be split or dispersed into a spectrum by one of two means, using a prism or a diffraction grating. When Newton split light into a spectrum in the 1660s he used a glass prism. School students often use perspex prisms from ray box kits to disperse or "split" white lig ...
Galaxies - cloudfront.net
... billions of stars. Galaxies are divided into three types according to shape: spiral, elliptical, and irregular galaxies. • Spiral galaxies spin and appear as a rotating disk of stars and dust, with a bulge in the middle. Several spiral arms reach outward from the central bulge like the arms of a pin ...
... billions of stars. Galaxies are divided into three types according to shape: spiral, elliptical, and irregular galaxies. • Spiral galaxies spin and appear as a rotating disk of stars and dust, with a bulge in the middle. Several spiral arms reach outward from the central bulge like the arms of a pin ...
A Radial Velocity Search for Extra-Solar Planets Using an Iodine
... which many basic questions remain to be answered. Is planet formation a common or rare phenomenon? Is it a natural extension of the star formation process or is a different mechanism involved? Unlike most stars, the Sun is not found in a binary system. Is its single status related to the fact that i ...
... which many basic questions remain to be answered. Is planet formation a common or rare phenomenon? Is it a natural extension of the star formation process or is a different mechanism involved? Unlike most stars, the Sun is not found in a binary system. Is its single status related to the fact that i ...
Red supergiants and the past of Cygnus OB2
... main star-forming sites have been shifting with time. The study of this older component is made difficult by the effects of stellar evolution, and in particular by the fact that its most massive components have already disappeared as supernovae. A thus far unexplored probe of the massive star format ...
... main star-forming sites have been shifting with time. The study of this older component is made difficult by the effects of stellar evolution, and in particular by the fact that its most massive components have already disappeared as supernovae. A thus far unexplored probe of the massive star format ...
There are 88 constellations in the sky around the Earth. 12 are the
... Taurus, and the Square of Pegasus. About 2000 years ago, the vernal equinox (the place the Sun rose on the first day of spring) was in the constellation Aries. Due to wobbling of the earth's axis, this is no longer the case, but Aries is still regarded as the first constellation in the zodiac. Star ...
... Taurus, and the Square of Pegasus. About 2000 years ago, the vernal equinox (the place the Sun rose on the first day of spring) was in the constellation Aries. Due to wobbling of the earth's axis, this is no longer the case, but Aries is still regarded as the first constellation in the zodiac. Star ...
Test 3 Review Clicker Questions
... a) cannot explain how the Sun is stable. b) detect only one-third the number of neutrinos expected by theory. c) cannot detect neutrinos easily. d) are unable to explain how neutrinos oscillate between other types. e) cannot create controlled fusion ...
... a) cannot explain how the Sun is stable. b) detect only one-third the number of neutrinos expected by theory. c) cannot detect neutrinos easily. d) are unable to explain how neutrinos oscillate between other types. e) cannot create controlled fusion ...
Betelgeuse: an unauthorized biography
... Betelgeuse is a Long Period Variable. The visible magnitude has been observed to vary by about 0.6 to 1.1 (with occasional smaller and larger – 1.2 mag – excursions) and the radial velocity of individual spectral lines can vary by up to about 10 km s–1. The variations appear random on timescales of ...
... Betelgeuse is a Long Period Variable. The visible magnitude has been observed to vary by about 0.6 to 1.1 (with occasional smaller and larger – 1.2 mag – excursions) and the radial velocity of individual spectral lines can vary by up to about 10 km s–1. The variations appear random on timescales of ...
A Star - Cloudy Nights
... A few stars in the sky are actually multiple star systems, which can have anywhere from three to ten stars orbiting around a common point. Most of the time, there will be two or three brighter stars, with the rest being extremely faint or extremely close to each other. Almaak, or Gamma Andromeda i ...
... A few stars in the sky are actually multiple star systems, which can have anywhere from three to ten stars orbiting around a common point. Most of the time, there will be two or three brighter stars, with the rest being extremely faint or extremely close to each other. Almaak, or Gamma Andromeda i ...
1 CHAPTER 18 SPECTROSCOPIC BINARY STARS 18.1
... that there are two stars from their spectra. In favourable circumstances, two distinct spectra can be seen. It might be that the spectral types of the two components are very different – perhaps a hot A-type star and a cool K-type star, and it is easy to recognize that there must be two stars there. ...
... that there are two stars from their spectra. In favourable circumstances, two distinct spectra can be seen. It might be that the spectral types of the two components are very different – perhaps a hot A-type star and a cool K-type star, and it is easy to recognize that there must be two stars there. ...
MPhil Thesis - Final - Suzanne Knight
... Theoretical predictions generally agree that a star will consume and destroy close-in, low mass planets as it ascends the red giant and asymptotic giant branch evolutionary tracks, but larger mass objects and those further out will survive.! A substellar companion detected around a white dwarf would ...
... Theoretical predictions generally agree that a star will consume and destroy close-in, low mass planets as it ascends the red giant and asymptotic giant branch evolutionary tracks, but larger mass objects and those further out will survive.! A substellar companion detected around a white dwarf would ...
Spectral Matching for Elemental Abundances of Evolved Stars of Globular Clusters
... k-means clustering using two groups of ω Cen stars. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k-means clustering using three groups for Marino et al. (2012) results of ω Cen stars. . . . . . . . . . . k-means clustering using three groups for the 221-star set of ω Cen stars. . . . . ...
... k-means clustering using two groups of ω Cen stars. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k-means clustering using three groups for Marino et al. (2012) results of ω Cen stars. . . . . . . . . . . k-means clustering using three groups for the 221-star set of ω Cen stars. . . . . ...
Quantifying the Uncertainty in the Orbits of Extrasolar Planets
... Recent detections of planets around other stars have spurred a wide range of research on planet formation and planetary system evolution. The first planet discovered around a solar type star, 51 Pegasi b, was in a surprisingly short period orbit (Mayor & Queloz 1995). Other early planets such as 70 ...
... Recent detections of planets around other stars have spurred a wide range of research on planet formation and planetary system evolution. The first planet discovered around a solar type star, 51 Pegasi b, was in a surprisingly short period orbit (Mayor & Queloz 1995). Other early planets such as 70 ...
Lecture 12: Evolution of the Galaxy
... heavy element mass fraction, Z, at the time of their birth. The youngest stars are therefore the most heavy-element rich, and the oldest ones (Population II stars) are the most deficient in heavy elements relative to the Sun. • Halo Population II stars have Z ~ 10-3 to 10-1 Z⊙ • Disk Population I st ...
... heavy element mass fraction, Z, at the time of their birth. The youngest stars are therefore the most heavy-element rich, and the oldest ones (Population II stars) are the most deficient in heavy elements relative to the Sun. • Halo Population II stars have Z ~ 10-3 to 10-1 Z⊙ • Disk Population I st ...
NSDL_WS_1_Astonomy
... We think Low mass (< 1 Msun) stars also puff out, and eventually become white dwarfs. We do know they are very long lived -- longer than the universe is old. ...
... We think Low mass (< 1 Msun) stars also puff out, and eventually become white dwarfs. We do know they are very long lived -- longer than the universe is old. ...
3. The MONS Telescope requirements
... Spacecraft jitter (attitude movements) will have a dramatic effect on the photometric precision if one does not design the instrument, telescope and platform carefully. This is because there will be small variations on the sensitivity of the CCD from pixel to pixel and even within each pixel. Most o ...
... Spacecraft jitter (attitude movements) will have a dramatic effect on the photometric precision if one does not design the instrument, telescope and platform carefully. This is because there will be small variations on the sensitivity of the CCD from pixel to pixel and even within each pixel. Most o ...
ABSTRACT Exoplanet Habitability and an Analysis of Gliese 436 b
... the moon. An exoplanet orbits in front of its host star as viewed from earth.8 A photon counting camera can then detect the decrease in perceived brightness from the host star.9 A light curve is then produced to show brightness over time.8 From this light curve, an exoplanet’s radius and density can ...
... the moon. An exoplanet orbits in front of its host star as viewed from earth.8 A photon counting camera can then detect the decrease in perceived brightness from the host star.9 A light curve is then produced to show brightness over time.8 From this light curve, an exoplanet’s radius and density can ...
GRB jets and their interaction with the progenitor star
... 10o and =10 is propagated through polytropic stars of varying mass and radius. The break-out time depends very mildly on the mass, so too the energy deposited into the star ...
... 10o and =10 is propagated through polytropic stars of varying mass and radius. The break-out time depends very mildly on the mass, so too the energy deposited into the star ...