The Mathematics of the Longitude
... In the ancient times, lunar eclipse was used as a clock for determining longitude. However, lunar eclipses are rare. Hence it is of no use to ships. Later, Jupiter's moon's eclipse was also used as a celestial clock for determining longitude. Unlike lunar eclipse, Jupiter's moon experienced a lot of ...
... In the ancient times, lunar eclipse was used as a clock for determining longitude. However, lunar eclipses are rare. Hence it is of no use to ships. Later, Jupiter's moon's eclipse was also used as a celestial clock for determining longitude. Unlike lunar eclipse, Jupiter's moon experienced a lot of ...
Finding KBO Flyby Targets for New Horizons
... the densest sections of the Milky Way until shortly before the Pluto encounter. Because candidate targets must be observed for 2-3 years to determine a good orbit, targets for the 2015 Pluto flyby trajectory must be identified by about 2012, while the search area is still deep in the Milky Way, thou ...
... the densest sections of the Milky Way until shortly before the Pluto encounter. Because candidate targets must be observed for 2-3 years to determine a good orbit, targets for the 2015 Pluto flyby trajectory must be identified by about 2012, while the search area is still deep in the Milky Way, thou ...
Solar Math - GLORIA Project
... with problems and examples demonstrating its applications in everyday life. Space Math offers math applications through one of the strongest motivators-Space. Technology makes it possible for students to experience the value of math, instead of just reading about it. Technology is essential to mathe ...
... with problems and examples demonstrating its applications in everyday life. Space Math offers math applications through one of the strongest motivators-Space. Technology makes it possible for students to experience the value of math, instead of just reading about it. Technology is essential to mathe ...
Reassessing the formation of the inner Oort cloud
... We re-examine the formation of the inner Oort comet cloud while the Sun was in its birth cluster with the aid of numerical simulations. This work is a continuation of an earlier study (Brasser et al., 2006) with several substantial modifications. First, the system consisting of stars, planets and co ...
... We re-examine the formation of the inner Oort comet cloud while the Sun was in its birth cluster with the aid of numerical simulations. This work is a continuation of an earlier study (Brasser et al., 2006) with several substantial modifications. First, the system consisting of stars, planets and co ...
Cassiopeia Kelly Pearce
... M52, The Scorpion The second Messier object in the constellation of Cassiopeia is M103, which has been variably measured to be between 9 and 25 million years in age (SEDS, M103, 2010). M103 is one of the more remote clusters in the Messier series measuring between about 8,000 and 9,500 light years a ...
... M52, The Scorpion The second Messier object in the constellation of Cassiopeia is M103, which has been variably measured to be between 9 and 25 million years in age (SEDS, M103, 2010). M103 is one of the more remote clusters in the Messier series measuring between about 8,000 and 9,500 light years a ...
Chapter 12: Surveying the Stars 12.1 Properties of Stars How do we
... Thought Question How would the apparent brightness of Alpha Centauri change if it were three times farther away? A. It would be only 1/3 as bright. B. It would be only 1/6 as bright. C. It would be only 1/9 as bright. D. It would be three times as bright. So how far away are these stars? © 2015 ...
... Thought Question How would the apparent brightness of Alpha Centauri change if it were three times farther away? A. It would be only 1/3 as bright. B. It would be only 1/6 as bright. C. It would be only 1/9 as bright. D. It would be three times as bright. So how far away are these stars? © 2015 ...
Galaxies and their properties
... stellar halos. The Milky Way contains a halo of old, metal-poor stars with a density distribution that falls off as a power law, ρ ∝ r−α and α ∼ 3. Detection of stellar halos in other galaxies is extremely difficult, but was done in recent years. These halos form as a result of a stellar stream asso ...
... stellar halos. The Milky Way contains a halo of old, metal-poor stars with a density distribution that falls off as a power law, ρ ∝ r−α and α ∼ 3. Detection of stellar halos in other galaxies is extremely difficult, but was done in recent years. These halos form as a result of a stellar stream asso ...
Life of a Star - University of Texas Astronomy Home Page
... SOL: Yes, it’s amazing how the core changes in such short time. But its fusion days were limited. The hydrogen shell dumped helium ash onto the helium fusion shell. Then the helium shell dumped its carbon ash into the carbon core. This core continued to contract, which shrank the outer shells. And t ...
... SOL: Yes, it’s amazing how the core changes in such short time. But its fusion days were limited. The hydrogen shell dumped helium ash onto the helium fusion shell. Then the helium shell dumped its carbon ash into the carbon core. This core continued to contract, which shrank the outer shells. And t ...
Stellar evolution - Statistical Physics Group
... millions of years so that direct observation of its present evolution is ruled out. There are indeed observable variations, both regular and catastrophic, in the properties of some stars (Cepheid variables, novae and supernovae for example) but it is by no means apparent that we are observing normal ...
... millions of years so that direct observation of its present evolution is ruled out. There are indeed observable variations, both regular and catastrophic, in the properties of some stars (Cepheid variables, novae and supernovae for example) but it is by no means apparent that we are observing normal ...
What are Messier Objects? - Bowling Green State University
... Throughout the night as the earth rotates our sky changes, and so does the sky where we stand. The information that continues is the results of a Messier marathon. How many Messier objects can you see in one night? The answer is you never know for sure. If you ask yourself that question everyday, yo ...
... Throughout the night as the earth rotates our sky changes, and so does the sky where we stand. The information that continues is the results of a Messier marathon. How many Messier objects can you see in one night? The answer is you never know for sure. If you ask yourself that question everyday, yo ...
Einstein`s waves: a new tool to explore the Universe
... This sequence begins with the Chandra Deep Field-North, the deepest X-ray image ever taken. Black holes that are also found in submillimeter observations, indicating active star formation in their host galaxies, are then marked. The view then zooms onto one pair of particularly close black holes (kn ...
... This sequence begins with the Chandra Deep Field-North, the deepest X-ray image ever taken. Black holes that are also found in submillimeter observations, indicating active star formation in their host galaxies, are then marked. The view then zooms onto one pair of particularly close black holes (kn ...
Building galaxies Hunt, Leslie Kipp
... seventeenth century by Galileo with his telescope; this was the beginning of the study of galaxies as systems of stars. More than a hundred years later, the Swedish philosopher Emanuel Swedenborg conjectured that “There may be innumerable spheres of this kind or starry heavens in the finite universe ...
... seventeenth century by Galileo with his telescope; this was the beginning of the study of galaxies as systems of stars. More than a hundred years later, the Swedish philosopher Emanuel Swedenborg conjectured that “There may be innumerable spheres of this kind or starry heavens in the finite universe ...
The first focused hard X-ray images of the sun with
... the comparable FoM for RHESSI (1.2 cts s−1 cm−2), meaning a flare giving the same count rate as the background is a million times fainter for NuSTAR than for RHESSI. While interpreting this FoM in terms of the sensitivity of the two fundamentally different types of instruments is far from trivial, th ...
... the comparable FoM for RHESSI (1.2 cts s−1 cm−2), meaning a flare giving the same count rate as the background is a million times fainter for NuSTAR than for RHESSI. While interpreting this FoM in terms of the sensitivity of the two fundamentally different types of instruments is far from trivial, th ...
The Stars - Springer
... some basic astrophysics, and it will be basic! From this point on, we will be mentioning such topics as luminosity, spectral classification, and so on, so let’s begin by explaining in detail what is meant. It is no use, and indeed pointless, if certain details about a star are given without an expla ...
... some basic astrophysics, and it will be basic! From this point on, we will be mentioning such topics as luminosity, spectral classification, and so on, so let’s begin by explaining in detail what is meant. It is no use, and indeed pointless, if certain details about a star are given without an expla ...
Astronomy Astrophysics NGC 7419 as a template for red supergiant clusters &
... Context. The open cluster NGC 7419 is known to contain five red supergiants and a very high number of Be stars. However, there are conflicting reports about its age and distance that prevent a useful comparison with other clusters. Aims. We intend to obtain more accurate parameters for NGC 7419, usi ...
... Context. The open cluster NGC 7419 is known to contain five red supergiants and a very high number of Be stars. However, there are conflicting reports about its age and distance that prevent a useful comparison with other clusters. Aims. We intend to obtain more accurate parameters for NGC 7419, usi ...
StellarManual
... An incomplete sentence is presented that indicates the size and surface temperature a certain star has relative to the Sun. Students should determine how the stellar luminosity will compare with the Sun. Initially there is no equation displayed. Answer: Luminosity of a star is proportional to the sq ...
... An incomplete sentence is presented that indicates the size and surface temperature a certain star has relative to the Sun. Students should determine how the stellar luminosity will compare with the Sun. Initially there is no equation displayed. Answer: Luminosity of a star is proportional to the sq ...
Downloaded - Royal Society Open Science
... Decades of unsuccessful attempts to find planets around other Sun-like stars preceded the unexpected 1992 discovery of planetary bodies orbiting a pulsar [1,2]. The three planets around the millisecond pulsar PSR B1257+12 were the first confidently reported extrasolar planets to withstand enduring s ...
... Decades of unsuccessful attempts to find planets around other Sun-like stars preceded the unexpected 1992 discovery of planetary bodies orbiting a pulsar [1,2]. The three planets around the millisecond pulsar PSR B1257+12 were the first confidently reported extrasolar planets to withstand enduring s ...
2 Justification and benefits in joining TMT
... China has a rich and proud history in astronomy; Chinese civilisation kept the best record for comets, Sun spots, and supernovae in the world. For example, the supernovae Chinese record in the Song dynasty provides the best, accurate dating (in the year of 1054) of the supernovae explosion in the Cr ...
... China has a rich and proud history in astronomy; Chinese civilisation kept the best record for comets, Sun spots, and supernovae in the world. For example, the supernovae Chinese record in the Song dynasty provides the best, accurate dating (in the year of 1054) of the supernovae explosion in the Cr ...
a wide-field survey for variable stars
... formation. To further complicate the picture, infrared observations indicate that T Tauri itself is part of a multiple system and suggest that the associated Hind’s Nebula may also contain a very young stellar object. This remarkable color image spans about 4 light-years across, at the estimated dis ...
... formation. To further complicate the picture, infrared observations indicate that T Tauri itself is part of a multiple system and suggest that the associated Hind’s Nebula may also contain a very young stellar object. This remarkable color image spans about 4 light-years across, at the estimated dis ...
Astronomy 518 Astrometry Lecture
... This combined movement has short and long period components which are usually broken down into 'corrections' as. • luni-solar precession (period about 26,000 years) • planetary precession (shift of ecliptic due to orbits of planets) • nutation (major period 18.6 years and amplitude 9.5 arc-seconds) ...
... This combined movement has short and long period components which are usually broken down into 'corrections' as. • luni-solar precession (period about 26,000 years) • planetary precession (shift of ecliptic due to orbits of planets) • nutation (major period 18.6 years and amplitude 9.5 arc-seconds) ...