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NexStar GT - Celestron
... automated technology. Simple and friendly to use, the NexStar is up and running after locating just two alignment stars. It’s the perfect combination of power and portability. If you are new to astronomy, you may wish to start off by using the NexStar's built-in Sky Tour feature, which commands the ...
... automated technology. Simple and friendly to use, the NexStar is up and running after locating just two alignment stars. It’s the perfect combination of power and portability. If you are new to astronomy, you may wish to start off by using the NexStar's built-in Sky Tour feature, which commands the ...
20+ queries:
... (10,000 square degrees) to about ½ arcsecond resolution using a modern ground-based telescope [SDSS]. It will characterize about 200M objects in 5 optical bands, and will measure the spectra of a million objects. The first year’s data is now public. The raw data gathered by the SDSS telescope at Apa ...
... (10,000 square degrees) to about ½ arcsecond resolution using a modern ground-based telescope [SDSS]. It will characterize about 200M objects in 5 optical bands, and will measure the spectra of a million objects. The first year’s data is now public. The raw data gathered by the SDSS telescope at Apa ...
The cosmological significance of high
... dkpc is the distance to Complex H in kiloparsecs. A typical H II region of diameter 50 pc would subtend an angle of 6.′ 4 at the nominal distance of 27 kpc to Complex H, and would thus be resolved easily by MSX. Ultracompact H II regions (less than 2 pc in diameter), however, would show up as point ...
... dkpc is the distance to Complex H in kiloparsecs. A typical H II region of diameter 50 pc would subtend an angle of 6.′ 4 at the nominal distance of 27 kpc to Complex H, and would thus be resolved easily by MSX. Ultracompact H II regions (less than 2 pc in diameter), however, would show up as point ...
supernova remnants: a link between massive stars and the
... (BSG) and became the prototype of the SN 1987Alike class. Models show that the progenitor could have been a ∼ 18M star in which the envelope mass is greater than the core mass, although there has been some mass loss (Chevalier 2005). The BSG circumstellar medium is complex, as can be seen from the ...
... (BSG) and became the prototype of the SN 1987Alike class. Models show that the progenitor could have been a ∼ 18M star in which the envelope mass is greater than the core mass, although there has been some mass loss (Chevalier 2005). The BSG circumstellar medium is complex, as can be seen from the ...
chapter 24 instructor notes
... Milky Way consists of “innumerable” faint stars. In 1718 Halley discovered the proper motions of Arcturus, Sirius, and Aldebaran, and by 1760 Mayer had published proper motions for some 80 stars based upon comparisons of their recorded positions. His results established that the Sun and stars are no ...
... Milky Way consists of “innumerable” faint stars. In 1718 Halley discovered the proper motions of Arcturus, Sirius, and Aldebaran, and by 1760 Mayer had published proper motions for some 80 stars based upon comparisons of their recorded positions. His results established that the Sun and stars are no ...
Magnitudes lesson plan
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
Module3: Life of a Star
... No matter whether it is a Type Ia or Type II supernova, the enormous explosions from these stars ejects material into the surroundings at very high velocities, sweeping up the surrounding interstellar gas into a shell or a giant bubble. This is known as a supernova remnant. The ejected material and ...
... No matter whether it is a Type Ia or Type II supernova, the enormous explosions from these stars ejects material into the surroundings at very high velocities, sweeping up the surrounding interstellar gas into a shell or a giant bubble. This is known as a supernova remnant. The ejected material and ...
TOPS: Toward Other Planetary
... as soon as possible. This phase is centered on a ground-based observing program, coupled with elements that will prepare for future space missions. The mid-term goals of the TOPS Program require the capability to discover and study planets with masses as low as those of Uranus and Neptune around 100 ...
... as soon as possible. This phase is centered on a ground-based observing program, coupled with elements that will prepare for future space missions. The mid-term goals of the TOPS Program require the capability to discover and study planets with masses as low as those of Uranus and Neptune around 100 ...
Solaria Binaria - The Grazian Archive
... Stars can be conceived to have originated from electrical cavities in the structure of space. Space, to our mind, is an infinite electrical medium. It is electrical in that it is everywhere occupied by a charge, which, when it moves, assumes the character of electrons, that is, “negative” charge (se ...
... Stars can be conceived to have originated from electrical cavities in the structure of space. Space, to our mind, is an infinite electrical medium. It is electrical in that it is everywhere occupied by a charge, which, when it moves, assumes the character of electrons, that is, “negative” charge (se ...
MEarth
... orbital periods much longer than those detected by groundbased transit searches. Gould et al. (2003) point out that missions like COROT and Kepler are much more sensitive to M-dwarf habitable planets than to solar-type habitable planets, if they can be reliably monitor the M dwarfs to faint magnitud ...
... orbital periods much longer than those detected by groundbased transit searches. Gould et al. (2003) point out that missions like COROT and Kepler are much more sensitive to M-dwarf habitable planets than to solar-type habitable planets, if they can be reliably monitor the M dwarfs to faint magnitud ...
View the sky`s greatest nebula
... Our earthbound view is rather different. On a clear summer night in the Northern Hemisphere, the glow of the Milky Way stretches from Cassiopeia in the northeast to Scorpius in the south. From this vantage point, we’re looking along the galaxy’s rim. Toward Scorpius is the central part of the Milky ...
... Our earthbound view is rather different. On a clear summer night in the Northern Hemisphere, the glow of the Milky Way stretches from Cassiopeia in the northeast to Scorpius in the south. From this vantage point, we’re looking along the galaxy’s rim. Toward Scorpius is the central part of the Milky ...
PDF
... The X-ray study of pulsars continued with launch of the ROSAT in 1990 (Trümper 1983). Its large collecting area and high spatial resolution allowed detection of synchrotron nebulae, all with linear size of a few parsecs, around several Galactic radio pulsars, including PSRs B1706−44, B1951+32, and ...
... The X-ray study of pulsars continued with launch of the ROSAT in 1990 (Trümper 1983). Its large collecting area and high spatial resolution allowed detection of synchrotron nebulae, all with linear size of a few parsecs, around several Galactic radio pulsars, including PSRs B1706−44, B1951+32, and ...
Stellar Properties
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. ...
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. ...
Presentazione di PowerPoint
... Every channel map has been searched for emission above a conservative detection threshold (in the range 5-10 ) The detected maser spots have been fitted with two-dimensional elliptical Gaussians (intensities in the range: 0.3-17 Jy beam-1) A maser “feature” is considered real if it is detected in ...
... Every channel map has been searched for emission above a conservative detection threshold (in the range 5-10 ) The detected maser spots have been fitted with two-dimensional elliptical Gaussians (intensities in the range: 0.3-17 Jy beam-1) A maser “feature” is considered real if it is detected in ...
Spiral structure of the Third Galactic Quadrant and the solution to the
... to be younger than 100 million years. These are listed in Table 1 and plotted in Fig. 2 which represents the third quadrant of the Galactic plane seen from above. Also plotted, are the BPs detected in the backgrounds of several clusters. A strip about 1.5 kpc wide, extending from l=210o to l=260o , ...
... to be younger than 100 million years. These are listed in Table 1 and plotted in Fig. 2 which represents the third quadrant of the Galactic plane seen from above. Also plotted, are the BPs detected in the backgrounds of several clusters. A strip about 1.5 kpc wide, extending from l=210o to l=260o , ...
AAS205_poster - FUSE - Johns Hopkins University
... Summary: We have obtained Spitzer Space Telescope MIPS and IRAC infrared images of Kepler's supernova remnant. The images, taken within two months of the 400th anniversary of the sighting of the supernova, provide the most detailed information to date on the spatial distribution and character of the ...
... Summary: We have obtained Spitzer Space Telescope MIPS and IRAC infrared images of Kepler's supernova remnant. The images, taken within two months of the 400th anniversary of the sighting of the supernova, provide the most detailed information to date on the spatial distribution and character of the ...
Learning Objectives - UNC Physics and Astronomy
... First, we are going to try to observe an asteroid with Skynet telescopes in different hemispheres, to measure its distance with parallax. Since asteroids (and planets) move across the sky quickly, the two telescopes will need to image the asteroid simultaneously. That way, any difference in the aste ...
... First, we are going to try to observe an asteroid with Skynet telescopes in different hemispheres, to measure its distance with parallax. Since asteroids (and planets) move across the sky quickly, the two telescopes will need to image the asteroid simultaneously. That way, any difference in the aste ...
CW9_MOST_GSphot_RK_v1
... suitability asa photometric comparison star for HD209458 and found based on 2 nights (each a few hours) that this Object is of delta Scuti nature and hence of no use in the context of their HD209458 study ...
... suitability asa photometric comparison star for HD209458 and found based on 2 nights (each a few hours) that this Object is of delta Scuti nature and hence of no use in the context of their HD209458 study ...
in search of antimatter in the universe
... But this is the brightness we would expect if the jet hits the ‘average star’. If we instead consider a much larger object, such as the gas shell of a supernova, then we obtain Figure 12. In this case, the emission line is just visible up to 600 parsecs, after which the brightness drops below 0.1 ph ...
... But this is the brightness we would expect if the jet hits the ‘average star’. If we instead consider a much larger object, such as the gas shell of a supernova, then we obtain Figure 12. In this case, the emission line is just visible up to 600 parsecs, after which the brightness drops below 0.1 ph ...
PowerPoint
... The Life of a 1 Solar Mass Star: 0.4 MSun < M < 4 MSun Example of how low mass stars will evolve on the ...
... The Life of a 1 Solar Mass Star: 0.4 MSun < M < 4 MSun Example of how low mass stars will evolve on the ...
Kepler423b: a half-Jupiter mass planet transiting a very old solar
... the current photospheric metallicity of Kepler-423. We derived a mass of M? = 0.85 ± 0.04 M a radius of R? = 0.95 ± 0.04 R and an age of t = 11 ± 2 Gyr (Table 5). Mass and radius imply a surface gravity of log g = 4.41 ± 0.04 (log10 cm s−2 ), which agrees with the spectroscopically derived value l ...
... the current photospheric metallicity of Kepler-423. We derived a mass of M? = 0.85 ± 0.04 M a radius of R? = 0.95 ± 0.04 R and an age of t = 11 ± 2 Gyr (Table 5). Mass and radius imply a surface gravity of log g = 4.41 ± 0.04 (log10 cm s−2 ), which agrees with the spectroscopically derived value l ...
The GL 569 Multiple System
... The proper motion of GL 569 A is µα = 275.95 and µδ = −122.12 mas yr−1 (HIPPARCOS). Thus, in the ∼20 years since the discovery by Forrest et al. (1988) of GL 569 B, the A component has moved ∼6′′ on the sky. Our February, 2005 NIRC-2 H- and K-band images showed the photocenter of GL 569 B 4.′′ 18 ± ...
... The proper motion of GL 569 A is µα = 275.95 and µδ = −122.12 mas yr−1 (HIPPARCOS). Thus, in the ∼20 years since the discovery by Forrest et al. (1988) of GL 569 B, the A component has moved ∼6′′ on the sky. Our February, 2005 NIRC-2 H- and K-band images showed the photocenter of GL 569 B 4.′′ 18 ± ...
Document
... The magnetic flux, accumulated on the horizon of an IBH because of accretion of interstellar matter, allows the Blandford–Znajeck mechanism to be activated. So, electron–positron jets can be launched. Such jets are feasible electron accelerator which, in molecular clouds, allows electron energy to b ...
... The magnetic flux, accumulated on the horizon of an IBH because of accretion of interstellar matter, allows the Blandford–Znajeck mechanism to be activated. So, electron–positron jets can be launched. Such jets are feasible electron accelerator which, in molecular clouds, allows electron energy to b ...
International Ultraviolet Explorer
![](https://en.wikipedia.org/wiki/Special:FilePath/International_Ultraviolet_Explorer.gif?width=300)
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.