Chapter 1 Telescopes 1.1 Lenses
... the diameter of the objective of a telescope, the greater the number of stars that can be seen. Planets and other astronomical objects in the solar system are magnified using a telescope (unlike stars which are point objects and are seen through telescopes as point images no matter how large the mag ...
... the diameter of the objective of a telescope, the greater the number of stars that can be seen. Planets and other astronomical objects in the solar system are magnified using a telescope (unlike stars which are point objects and are seen through telescopes as point images no matter how large the mag ...
Molecular Cloud www.AssignmentPoint.com A molecular cloud
... of the volume of the interstellar medium (ISM), yet it is also the densest part of the medium, comprising roughly half of the total gas mass interior to the Sun's galactic orbit. The bulk of the molecular gas is contained in a ring between 3.5 and 7.5 kiloparsecs (11,000 and 24,000 light-years) from ...
... of the volume of the interstellar medium (ISM), yet it is also the densest part of the medium, comprising roughly half of the total gas mass interior to the Sun's galactic orbit. The bulk of the molecular gas is contained in a ring between 3.5 and 7.5 kiloparsecs (11,000 and 24,000 light-years) from ...
... the finite speed of light to measure distances. However, stars are so far away and such poor reflectors that this approach is impractical (though it is used to determine distances to planets in our solar system). The question of measuring star distances has occupied astronomers at least since the ti ...
Astrophysics Pristine CNO abundances from Magellanic Cloud B stars
... Large Magellanic Cloud (LMC). Apart from H ii regions, unevolved OB-type stars are currently the only accessible source of present-day CNO abundances for the MCs not altered by stellar evolution. Using UVES on the VLT, we obtained spectra of sufficient resolution (R = 20 000) and signal-to-noise (S/ ...
... Large Magellanic Cloud (LMC). Apart from H ii regions, unevolved OB-type stars are currently the only accessible source of present-day CNO abundances for the MCs not altered by stellar evolution. Using UVES on the VLT, we obtained spectra of sufficient resolution (R = 20 000) and signal-to-noise (S/ ...
Evolved, single, slowly rotating... but magnetically active
... with the F3KB CCD. The CFHT spectra were obtained with the Gecko coudé spectrograph and the Loral 20482 CCD (15 µ pixels) with an effective resolving power of 120,000 at 6710 Å. The signal-to-noise ratio of these spectra is 500:1. Representative plots of the wavelength regions of interest are show ...
... with the F3KB CCD. The CFHT spectra were obtained with the Gecko coudé spectrograph and the Loral 20482 CCD (15 µ pixels) with an effective resolving power of 120,000 at 6710 Å. The signal-to-noise ratio of these spectra is 500:1. Representative plots of the wavelength regions of interest are show ...
Tasks - ESA Science
... Observatories in Chile have presented ever deeper and more spectacular views of the Universe. However, Hubble and the ESO telescopes have not just provided stunning new images, they are also invaluable tools for astronomers. The telescopes have excellent spatial/angular resolution (image sharpness) ...
... Observatories in Chile have presented ever deeper and more spectacular views of the Universe. However, Hubble and the ESO telescopes have not just provided stunning new images, they are also invaluable tools for astronomers. The telescopes have excellent spatial/angular resolution (image sharpness) ...
Starwalk Manual En
... The Search feature allows you to switch between the following categories: • Stars and constellations • Solar system - includes planets, the Moon, the Sun, meteor showers, dwarf planets, asteroids, comets • Deep space – includes clusters, nebulas, galaxies, clouds • Satellites Each category has a lis ...
... The Search feature allows you to switch between the following categories: • Stars and constellations • Solar system - includes planets, the Moon, the Sun, meteor showers, dwarf planets, asteroids, comets • Deep space – includes clusters, nebulas, galaxies, clouds • Satellites Each category has a lis ...
Galaxies - WordPress.com
... ones with large, bright nuclei of stars and tightly wound spiral arms, to ones with very small, dim nuclei and open sprawling arms. The Andromeda Galaxy is also a spiral galaxy. ...
... ones with large, bright nuclei of stars and tightly wound spiral arms, to ones with very small, dim nuclei and open sprawling arms. The Andromeda Galaxy is also a spiral galaxy. ...
THE ABSOLUTE MAGNITUDE OF RR LYRAE - Cosmos
... stars with larger relative errors have brighter luminosities, i.e., have smaller parallaxes, appears clearly when the true parallax is small, compared with error of parallax. Similarly the distant stars have too faint luminosities, i.e., have too large parallaxes, mainly because the true parallax is ...
... stars with larger relative errors have brighter luminosities, i.e., have smaller parallaxes, appears clearly when the true parallax is small, compared with error of parallax. Similarly the distant stars have too faint luminosities, i.e., have too large parallaxes, mainly because the true parallax is ...
Chapter 1: Introduction to Wide
... Pan, I discovered, to my joy and astonishment, that my initial images had turned out well. With a maximum aperture of f/4.5, I had succeeded in recording Jupiter with that first one-second snap. In fact, seemingly hundreds of stars piled up on the longer-exposed negatives, and I could clearly trace ...
... Pan, I discovered, to my joy and astonishment, that my initial images had turned out well. With a maximum aperture of f/4.5, I had succeeded in recording Jupiter with that first one-second snap. In fact, seemingly hundreds of stars piled up on the longer-exposed negatives, and I could clearly trace ...
Starfarer
... function is to indicate points on the horizon’s rim, and these points remain fixed regardless of whether the stars marking them are currently in the appropriate position or not visible at all. One limitation is that it cannot be used during daylight or when clouds obscure the stars. And since the co ...
... function is to indicate points on the horizon’s rim, and these points remain fixed regardless of whether the stars marking them are currently in the appropriate position or not visible at all. One limitation is that it cannot be used during daylight or when clouds obscure the stars. And since the co ...
October, 2006 - The Astronomical Society of Las Cruces
... As Far As the Eye Can See... Using Double Stars to Gauge Seeing Conditions Joseph Mancilla Double stars have a very practical use for both the visual observer and astrophotographer. At low powers of 70x and below the effects of bad seeing are not that noticeable, but at high powers they become very ...
... As Far As the Eye Can See... Using Double Stars to Gauge Seeing Conditions Joseph Mancilla Double stars have a very practical use for both the visual observer and astrophotographer. At low powers of 70x and below the effects of bad seeing are not that noticeable, but at high powers they become very ...
Galaxies
... d. a spherical component e. an accretion disk. 4. Our galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy a. rotates faster than expected in its outer region. b. rotates more slowly than expected in its outer region. c. rotates faster than expected in its inner r ...
... d. a spherical component e. an accretion disk. 4. Our galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy a. rotates faster than expected in its outer region. b. rotates more slowly than expected in its outer region. c. rotates faster than expected in its inner r ...
doc - Pocket Stars
... an improved fix from two or more LOPs. You can select from amongst the previously acquired observations by checking the associated checkbox. The results are shown in red text in the lower left corner. These include: ...
... an improved fix from two or more LOPs. You can select from amongst the previously acquired observations by checking the associated checkbox. The results are shown in red text in the lower left corner. These include: ...
Spiral Arms - Harry Kroto
... The spiral arms are regions where stars' and gas clouds' orbits bunch up closer to one another and the region becomes overdense. Stars go in and move out of the pattern, but the pattern persists and moves at its own rate. Since the region is overdense when gas clouds enter it they are compressed and ...
... The spiral arms are regions where stars' and gas clouds' orbits bunch up closer to one another and the region becomes overdense. Stars go in and move out of the pattern, but the pattern persists and moves at its own rate. Since the region is overdense when gas clouds enter it they are compressed and ...
Surface Gravity as a Diagnostic ... Youth Cameron Higby-Naquin Advisor: Eric Jensen
... star? We must , at this point, define a few terms. There is a point at which a collapsing cloudlet within a star-forming nebula becomes a star that we will call the birth. There is a also point at which that star has existed long enough that it has lost most of the properties characteristic of its b ...
... star? We must , at this point, define a few terms. There is a point at which a collapsing cloudlet within a star-forming nebula becomes a star that we will call the birth. There is a also point at which that star has existed long enough that it has lost most of the properties characteristic of its b ...
Intel® Shooting StarTM Drones Featured in First
... dependent on the animation needed and can range from hundreds of Intel Shooting Star drones or even more in the future. The first-of-its-kind Shooting Star drone meets all FCC technical specifications, but has not yet been authorized as required by the rules of the Federal Communications Commission. ...
... dependent on the animation needed and can range from hundreds of Intel Shooting Star drones or even more in the future. The first-of-its-kind Shooting Star drone meets all FCC technical specifications, but has not yet been authorized as required by the rules of the Federal Communications Commission. ...
Power Point - Astronomer`s Proposal Tools Team
... indicating the object is not a star is ignored for all faint (detectorspecific cutoffs) objects. This is due to the fact that the reason most of these objects have the flag set due to the poor S/N in the PSF. While this issue is important in determining if the object can be used as a guide star, it ...
... indicating the object is not a star is ignored for all faint (detectorspecific cutoffs) objects. This is due to the fact that the reason most of these objects have the flag set due to the poor S/N in the PSF. While this issue is important in determining if the object can be used as a guide star, it ...
Mergers of massive main sequence binaries
... we analyzed a grid of binary SMC models computed by De Mink et al. (2007) which allowed us to calculate the hydrogen fraction of the merger star, which we shall discuss in Sect. 3.3. We considered the third question by simulating a cluster of stars with SMC metallicity (Sect. 4) which formed instant ...
... we analyzed a grid of binary SMC models computed by De Mink et al. (2007) which allowed us to calculate the hydrogen fraction of the merger star, which we shall discuss in Sect. 3.3. We considered the third question by simulating a cluster of stars with SMC metallicity (Sect. 4) which formed instant ...
CPW
... • B is correct over A because like charges do in fact repel, not a^ract each other. If you did not know that like charges repel, you sAll could have go^en B over A, since if it were ...
... • B is correct over A because like charges do in fact repel, not a^ract each other. If you did not know that like charges repel, you sAll could have go^en B over A, since if it were ...
Luminosity of sun
... The boundary exerts force on the molecules (to change their direction), the molecules exert force on the boundary (Newton’s 3rd law). Lots of molecules bouncing off a boundary (like the wall of a balloon) and exerting force on its area → Pressure! ...
... The boundary exerts force on the molecules (to change their direction), the molecules exert force on the boundary (Newton’s 3rd law). Lots of molecules bouncing off a boundary (like the wall of a balloon) and exerting force on its area → Pressure! ...
Reassessing the formation of the inner Oort cloud
... that most embedded clusters have between 100 to 1 000 members. The cumulative distribution of the number of stars, N, has a best fit f = 0.637 log N − 1.045 i.e the distribution increases logarithmically with N (Adams, 2010). For most embedded clusters, the observed surface density is a constant (Al ...
... that most embedded clusters have between 100 to 1 000 members. The cumulative distribution of the number of stars, N, has a best fit f = 0.637 log N − 1.045 i.e the distribution increases logarithmically with N (Adams, 2010). For most embedded clusters, the observed surface density is a constant (Al ...
Neutron Stars PowerPoint
... ~ 1,837 times the mass of an electron Proton mass + Electron mass = Neutron mass ...
... ~ 1,837 times the mass of an electron Proton mass + Electron mass = Neutron mass ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.