The cosmic origin of fluorine and sulphur
... small white dwarf in the middle of the picture, and around it the elements the giant star has produced and expelled into its surroundings are clearly visible. In practice my result means that all the fluorine we come in contact with, including that in our toothpaste, likely has been formed like this ...
... small white dwarf in the middle of the picture, and around it the elements the giant star has produced and expelled into its surroundings are clearly visible. In practice my result means that all the fluorine we come in contact with, including that in our toothpaste, likely has been formed like this ...
diy astronomy - American Museum of Natural History
... Astronomical data are archived in large on-line databases; real images of any part of the sky can be easily obtained from the Internet. • Astrometry is a technique that astronomers use to measure the position or change in position of objects in the sky. They can use it to calculate how fast stars m ...
... Astronomical data are archived in large on-line databases; real images of any part of the sky can be easily obtained from the Internet. • Astrometry is a technique that astronomers use to measure the position or change in position of objects in the sky. They can use it to calculate how fast stars m ...
The physics of star formation - Yale Astronomy
... is of central importance in astrophysics to understand how stars form and what determines their properties. The generally accepted view that stars form by the gravitational condensation of diffuse matter in space is very old, indeed almost as old as the concept of universal gravitational attraction ...
... is of central importance in astrophysics to understand how stars form and what determines their properties. The generally accepted view that stars form by the gravitational condensation of diffuse matter in space is very old, indeed almost as old as the concept of universal gravitational attraction ...
the evolution of planetary systems with time
... disks provide torques that influence orbital elements, and turbulent fluctuations act on young planets. Over longer time scales, solar systems are affected by tidal forces from both stars and planets, and by general relativistic corrections that lead to orbital precession. Another classic problem in ...
... disks provide torques that influence orbital elements, and turbulent fluctuations act on young planets. Over longer time scales, solar systems are affected by tidal forces from both stars and planets, and by general relativistic corrections that lead to orbital precession. Another classic problem in ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... population implies that star formation occurred in Crater perhaps as recently as 400 Myr ago. No globular cluster has ever accomplished the feat of prolonging its star formation by several Gyr. Therefore, if our hypothesis that the blue bright stars in Crater are blue loop giants is correct, the new ...
... population implies that star formation occurred in Crater perhaps as recently as 400 Myr ago. No globular cluster has ever accomplished the feat of prolonging its star formation by several Gyr. Therefore, if our hypothesis that the blue bright stars in Crater are blue loop giants is correct, the new ...
Antares Palette - RASC Kingston Centre
... what we want to focus on?” We asked ourselves “What will we be remembered for ten years from now? What is our legacy?” We scheduled at least one visit by a Board member to each Centre throughout the coming months. The subject of our finances (an important topic!) gave us much room for cogitation—Sho ...
... what we want to focus on?” We asked ourselves “What will we be remembered for ten years from now? What is our legacy?” We scheduled at least one visit by a Board member to each Centre throughout the coming months. The subject of our finances (an important topic!) gave us much room for cogitation—Sho ...
12C13C1414N21312C/13C3he43He/4He Sub-surface
... While the envelope convection zones may, at first glance, be negligible for the internal evolution of hot massive stars, they may cause observable phenomena at the stellar surface. The reason is that the zones are located very close to the photosphere for some mass interval (see below). Here, we wil ...
... While the envelope convection zones may, at first glance, be negligible for the internal evolution of hot massive stars, they may cause observable phenomena at the stellar surface. The reason is that the zones are located very close to the photosphere for some mass interval (see below). Here, we wil ...
bode elert johann
... of the second edition, he must regard Halley’s publication of 1712 as the first. The catalogue lists 3175 stars. They are arranged by constellation, starting with Cassiopeia (see Figure 3). The first column, headed “Fl. No”, gives the correct Flamsteed number. The positions (right ascension, declina ...
... of the second edition, he must regard Halley’s publication of 1712 as the first. The catalogue lists 3175 stars. They are arranged by constellation, starting with Cassiopeia (see Figure 3). The first column, headed “Fl. No”, gives the correct Flamsteed number. The positions (right ascension, declina ...
Non-thermal hard X-ray emission from stellar coronae
... and gravitational torques ⇒ inhibited sedimentation of solids ⇒ planetary formation in dead zones only? When formed, planetesimals undergo random walks, rather than simple migration Close-in gaseous planets have magnetosphere which interact with the stellar one ⇒ enhanced activity Planet atmospheres ...
... and gravitational torques ⇒ inhibited sedimentation of solids ⇒ planetary formation in dead zones only? When formed, planetesimals undergo random walks, rather than simple migration Close-in gaseous planets have magnetosphere which interact with the stellar one ⇒ enhanced activity Planet atmospheres ...
Baryons at Low Densities: The Stellar Halos around Galaxies
... clusters) survey. The high angular resolution of the Hubble Space Telescope (HST) allows the detection of single stars in halos at larger distances and in denser regions — hence investigating the transition regions between the disc and halo. All MW-like galaxies observed by GHOSTS have extended stel ...
... clusters) survey. The high angular resolution of the Hubble Space Telescope (HST) allows the detection of single stars in halos at larger distances and in denser regions — hence investigating the transition regions between the disc and halo. All MW-like galaxies observed by GHOSTS have extended stel ...
Hands-On Activities
... meteor: The visible event that occurs when a meteoroid or asteroid enters Earth's atmosphere and becomes brightly visible. Milky Way: The galaxy which is the home of our Solar System together with at least 200 billion other stars and their planets. nova: A cataclysmic nuclear explosion caused by the ...
... meteor: The visible event that occurs when a meteoroid or asteroid enters Earth's atmosphere and becomes brightly visible. Milky Way: The galaxy which is the home of our Solar System together with at least 200 billion other stars and their planets. nova: A cataclysmic nuclear explosion caused by the ...
The Life Cycle of Stars: Supernovae in Starbursts by Jason Kezwer
... Table 2.5 Comparison of WIRCam and 2MASS Arp 220 photometry, including filter specifications. The bandwidth of each filer is denoted by ∆λ. Note that even though the filters are not identical, agreement within errors is found. The uncertainty quoted in the WIRCam data is systematic and due to the sp ...
... Table 2.5 Comparison of WIRCam and 2MASS Arp 220 photometry, including filter specifications. The bandwidth of each filer is denoted by ∆λ. Note that even though the filters are not identical, agreement within errors is found. The uncertainty quoted in the WIRCam data is systematic and due to the sp ...
Binarity in carbon-enhanced metal-poor stars
... The large class of CEMP-s stars is thought to obtain their overabundant carbon and s-process elements from a companion star that has gone through the asymptotic giant branch (AGB) phase and deposited large amounts of newly formed carbon and s-process material on its neighbour. Strong evidence in fav ...
... The large class of CEMP-s stars is thought to obtain their overabundant carbon and s-process elements from a companion star that has gone through the asymptotic giant branch (AGB) phase and deposited large amounts of newly formed carbon and s-process material on its neighbour. Strong evidence in fav ...
Dynamical properties of a large young disk galaxy at z=2.03⋆
... the HI velocity field with radio aperture synthesis. Integral field spectroscopy thus presents a major improvement over slit spectroscopy, provided significant resolution over the rotating disk is achieved. Recently, Förster Schreiber et al. (2006) and Bouché et al. (2007) used SINFONI to obtain t ...
... the HI velocity field with radio aperture synthesis. Integral field spectroscopy thus presents a major improvement over slit spectroscopy, provided significant resolution over the rotating disk is achieved. Recently, Förster Schreiber et al. (2006) and Bouché et al. (2007) used SINFONI to obtain t ...
Spring 2015 Mercury - Astronomical Society of the Pacific
... The Eagle Nebula wasn’t new to astronomers. Telescopic observations of M16 go back to 1745 when the Swiss astronomer JeanPhilippe de Chéseaux discovered it as a star cluster. Charles Messier observed it in 1764 and noted a nebula surrounding the cluster. Using a much more powerful telescope, Caroli ...
... The Eagle Nebula wasn’t new to astronomers. Telescopic observations of M16 go back to 1745 when the Swiss astronomer JeanPhilippe de Chéseaux discovered it as a star cluster. Charles Messier observed it in 1764 and noted a nebula surrounding the cluster. Using a much more powerful telescope, Caroli ...
The physics of star formation
... Star formation occurs as a result of the action of gravity on a wide range of scales, and different mechanisms may be important on different scales, depending on the forces opposing gravity. On galactic scales, the tendency of interstellar matter to condense under gravity into star-forming clouds is ...
... Star formation occurs as a result of the action of gravity on a wide range of scales, and different mechanisms may be important on different scales, depending on the forces opposing gravity. On galactic scales, the tendency of interstellar matter to condense under gravity into star-forming clouds is ...
Pluto Reading
... Pluto is a dwarf planet (or plutoid) that usually orbits past the orbit of Neptune. It was classified as a dwarf planet in 2006; before that it was considered to be a planet, the smallest planet in our solar system. There are many other dwarf planets in our Solar System. Pluto is smaller than a lot ...
... Pluto is a dwarf planet (or plutoid) that usually orbits past the orbit of Neptune. It was classified as a dwarf planet in 2006; before that it was considered to be a planet, the smallest planet in our solar system. There are many other dwarf planets in our Solar System. Pluto is smaller than a lot ...
pvb-based star compositions
... as a possible constituent in pyrotechnic compositions came via the research that Richard Harrison and I were making into the crackle phenomenon, as reported in the September 2015 issue of AFN. Once its name came up, we began to hear of rumours that PVB was being used in both China and Malta, so I de ...
... as a possible constituent in pyrotechnic compositions came via the research that Richard Harrison and I were making into the crackle phenomenon, as reported in the September 2015 issue of AFN. Once its name came up, we began to hear of rumours that PVB was being used in both China and Malta, so I de ...
The science case for - Astrophysics
... some of which will perhaps unite astrophysics with elementary particle physics in a new approach to the nature of matter. Some discoveries, made using relatively modest technologies, will require vast increases in technology to take the next step to direct study. Each new generation of facilities is ...
... some of which will perhaps unite astrophysics with elementary particle physics in a new approach to the nature of matter. Some discoveries, made using relatively modest technologies, will require vast increases in technology to take the next step to direct study. Each new generation of facilities is ...
The Gould Belt
... is mostly interpreted as a common expansion of the stellar system [8,9] and only a small fraction of it (≈1.5 km/s) can be explained as a red shift of spectrum lines owing to the gravitation of massive stars in accordance with the theory of relativity. Second, it was shown that the residual velociti ...
... is mostly interpreted as a common expansion of the stellar system [8,9] and only a small fraction of it (≈1.5 km/s) can be explained as a red shift of spectrum lines owing to the gravitation of massive stars in accordance with the theory of relativity. Second, it was shown that the residual velociti ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.