The Galactic evolution of phosphorus
... Fig. 2. [P/Fe] as a function of the metallicity, [Fe/H]. The dimension of the symbols reflects the average line-to-line scatter of 0.045 dex. The error bars are the sum under quadrature of the uncertainties of P (the linear sum of line-to-line scatter and the systematic uncertainty) and of Fe, the l ...
... Fig. 2. [P/Fe] as a function of the metallicity, [Fe/H]. The dimension of the symbols reflects the average line-to-line scatter of 0.045 dex. The error bars are the sum under quadrature of the uncertainties of P (the linear sum of line-to-line scatter and the systematic uncertainty) and of Fe, the l ...
James`s 5-Page Final Exam Review
... a. Asteroid. We’ve discovered an asteroid that orbits at a semimajor axis of 2 AU. i. What is this asteroid’s orbital period? ...
... a. Asteroid. We’ve discovered an asteroid that orbits at a semimajor axis of 2 AU. i. What is this asteroid’s orbital period? ...
A search for a new class of pulsating DA white dwarf stars in the DB
... observable amplitudes. There have been few searches for pulsation in DA white dwarfs of this temperature. Therefore, we have begun a survey to try to find the predicted new class of pulsating stars, stars that have DA atmospheres, but are structurally close to the known DBV (DB variable) pulsating s ...
... observable amplitudes. There have been few searches for pulsation in DA white dwarfs of this temperature. Therefore, we have begun a survey to try to find the predicted new class of pulsating stars, stars that have DA atmospheres, but are structurally close to the known DBV (DB variable) pulsating s ...
in BRIGHTEST STARS
... In order for us to see it at its enormous distance, Deneb must also be tremendously bright and energetic. Among the 20 brightest stars, only Rigel in Orion surpasses Deneb in intrinsic brightness. Deneb is an A2Ia star, which says that it is white hot (A2) and a supergiant star (Ia). Prof. James Kal ...
... In order for us to see it at its enormous distance, Deneb must also be tremendously bright and energetic. Among the 20 brightest stars, only Rigel in Orion surpasses Deneb in intrinsic brightness. Deneb is an A2Ia star, which says that it is white hot (A2) and a supergiant star (Ia). Prof. James Kal ...
Wide-eyed Telescope Finds its First Transiting
... Finding planets that pass in front of their parent stars is so important to understanding how planets form that the European Space Agency will shortly launch the €35M COROT satellite to find them. But a team of UK, French and Swiss astronomers is already paving the way from the ground, with today’s ...
... Finding planets that pass in front of their parent stars is so important to understanding how planets form that the European Space Agency will shortly launch the €35M COROT satellite to find them. But a team of UK, French and Swiss astronomers is already paving the way from the ground, with today’s ...
Wide-eyed Telescope Finds its First Transiting
... Finding planets that pass in front of their parent stars is so important to understanding how planets form that the European Space Agency will shortly launch the €35M COROT satellite to find them. But a team of UK, French and Swiss astronomers is already paving the way from the ground, with today’s ...
... Finding planets that pass in front of their parent stars is so important to understanding how planets form that the European Space Agency will shortly launch the €35M COROT satellite to find them. But a team of UK, French and Swiss astronomers is already paving the way from the ground, with today’s ...
chapter 2 - Test Bank 1
... 1. How does the elliptical shape of Earth’s orbit affect the seasons? In the critical analysis of an idea, it can be helpful to exaggerate the importance of a single factor. Doing so not only reveals the effect of that factor but can also reveal the inner workings of the process itself. Earth’s orbi ...
... 1. How does the elliptical shape of Earth’s orbit affect the seasons? In the critical analysis of an idea, it can be helpful to exaggerate the importance of a single factor. Doing so not only reveals the effect of that factor but can also reveal the inner workings of the process itself. Earth’s orbi ...
Open Cluster Photometry: Part II
... This site has collected almost all the available data on open clusters and you can call up a plot showing the cluster you have measured. You can scale this plot to show the stars you see in your image, and then, by just clicking on a particular star, get it’s published values of V and (B-V) – provid ...
... This site has collected almost all the available data on open clusters and you can call up a plot showing the cluster you have measured. You can scale this plot to show the stars you see in your image, and then, by just clicking on a particular star, get it’s published values of V and (B-V) – provid ...
october 2008 - Mahoning Valley Astronomical Society
... near the lander. These dusty whirlwinds had been expected but none had been seen until now. A total of 29 images were taken at the time and at least six dust devils were recorded. They ranged in size from 7 foot in diameter to 16 foot. The swirling winds pose no threat to the lander as it is very ri ...
... near the lander. These dusty whirlwinds had been expected but none had been seen until now. A total of 29 images were taken at the time and at least six dust devils were recorded. They ranged in size from 7 foot in diameter to 16 foot. The swirling winds pose no threat to the lander as it is very ri ...
printer-friendly version of benchmark
... stars are large enough and bright enough that we detect them with our naked eye to distances as far as 2000 light years (http://www.uwgb.edu/dutchs/CosmosNotes/distance.htm). Figure 4 is a chart of some of the nearest stars to Earth. After the Sun, Proxima Centauri is closest to Earth at 4.2 light ...
... stars are large enough and bright enough that we detect them with our naked eye to distances as far as 2000 light years (http://www.uwgb.edu/dutchs/CosmosNotes/distance.htm). Figure 4 is a chart of some of the nearest stars to Earth. After the Sun, Proxima Centauri is closest to Earth at 4.2 light ...
Dennett-Thorpe-deBruyn,2002
... between the results obtained from observations of both days. This shows that to first order the assumption of a temporally ’frozen’ scintillation pattern is justified. Combining these we calculate the plasma velocity to be vRA = −32.5 ± 0.5, vDec = 15.5 ± 1 km/s (i.e. the plasma moves West and North ...
... between the results obtained from observations of both days. This shows that to first order the assumption of a temporally ’frozen’ scintillation pattern is justified. Combining these we calculate the plasma velocity to be vRA = −32.5 ± 0.5, vDec = 15.5 ± 1 km/s (i.e. the plasma moves West and North ...
Astrophysics * Glossary - Uplift Summit International
... distance), eventually there will be no stars • The universe is not unchanging in time, it is expanding. Hence the most distant stars/ galaxies are strongly red- shifted, out of the visible part of the spectrum. • Light from distant stars may not have reached us yet. █ Suggest two reasons how the Big ...
... distance), eventually there will be no stars • The universe is not unchanging in time, it is expanding. Hence the most distant stars/ galaxies are strongly red- shifted, out of the visible part of the spectrum. • Light from distant stars may not have reached us yet. █ Suggest two reasons how the Big ...
Teacher`s Guide - Cornell Science Inquiry Partnerships
... This activity makes an analogy between stars and humans, which are easier to relate to. By having students graph properties of populations of humans based on a “snapshot” in time (i.e., a photograph or a census) and seeing what they can infer about these populations and how they change, the activity ...
... This activity makes an analogy between stars and humans, which are easier to relate to. By having students graph properties of populations of humans based on a “snapshot” in time (i.e., a photograph or a census) and seeing what they can infer about these populations and how they change, the activity ...
Two new transiting extra-solar planets discovered with SuperWASP
... discovered with SuperWASP and SOPHIE A team of British, French and Swiss astronomers has just discovered two new transiting extra-solar planets. This double discovery was made using the British SuperWASP cameras at La Palma, Spain, and the new SOPHIE spectrograph at Haute-Provence, France. These two ...
... discovered with SuperWASP and SOPHIE A team of British, French and Swiss astronomers has just discovered two new transiting extra-solar planets. This double discovery was made using the British SuperWASP cameras at La Palma, Spain, and the new SOPHIE spectrograph at Haute-Provence, France. These two ...
Guidestar: February, 2015 - Houston Astronomical Society
... the data they had was misinterpreted. They confused the primary and the secondary star in some old data and the timing of the event was incorrect. I was doing some work to capture this event by making photometric measurements of the star during the period in which the eclipse was supposed to take pl ...
... the data they had was misinterpreted. They confused the primary and the secondary star in some old data and the timing of the event was incorrect. I was doing some work to capture this event by making photometric measurements of the star during the period in which the eclipse was supposed to take pl ...
Influence of the Gould Belt on Interstellar Extinction
... model of extinction within the nearest kiloparsec with a relative accuracy higher than that of the model by Arenou et al. (1992) is unlikely to be possible. To achieve a high accuracy of the extinction correction, it is more preferable to reveal specific absorbing clouds or to determine the individu ...
... model of extinction within the nearest kiloparsec with a relative accuracy higher than that of the model by Arenou et al. (1992) is unlikely to be possible. To achieve a high accuracy of the extinction correction, it is more preferable to reveal specific absorbing clouds or to determine the individu ...
PROBLEM SET #9 SOLUTIONS AST142 1. Quasar luminosity
... is accreting at the Eddington rate, and show that these two findings are consistent with one another. ...
... is accreting at the Eddington rate, and show that these two findings are consistent with one another. ...
Visual Measurements of the Multiple Star
... and standard deviation and mean error values less than 1.0. But the observed separation of ARN 8 AB-D was over 2.8 times larger than that of STT 269 AB-C. Team members found it more challenging to align the two stars on the linear scale before performing the drift method of position angle determinat ...
... and standard deviation and mean error values less than 1.0. But the observed separation of ARN 8 AB-D was over 2.8 times larger than that of STT 269 AB-C. Team members found it more challenging to align the two stars on the linear scale before performing the drift method of position angle determinat ...
The Formation of Stars and Solar Systems
... Molecular Clouds and many more smaller ones. Such clouds were first discovered in our Milky Way Galaxy with radio telescopes about 25 years ago. • Since the molecules in these clouds do not emit optical light, but do release light at radio wavelengths, radio telescopes are necessary to trace the mol ...
... Molecular Clouds and many more smaller ones. Such clouds were first discovered in our Milky Way Galaxy with radio telescopes about 25 years ago. • Since the molecules in these clouds do not emit optical light, but do release light at radio wavelengths, radio telescopes are necessary to trace the mol ...
The Mighty Hunter in the Winter Sky By Shannon Jackson
... appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other stars and constellations are moving. Polaris is marking the North Pole ...
... appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other stars and constellations are moving. Polaris is marking the North Pole ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.