Neil F. Comins - Kuwait Life Sciences Company
... concepts for students who learn in different ways. • helping students compare their beliefs with the findings of modern science and understand why the scientific view is correct. • using analogies from everyday life to make cosmic phenomena more concrete. • presenting the observations and underlying ...
... concepts for students who learn in different ways. • helping students compare their beliefs with the findings of modern science and understand why the scientific view is correct. • using analogies from everyday life to make cosmic phenomena more concrete. • presenting the observations and underlying ...
PDF format
... a) the recycling of stellar material from stars into the interstellar medium which then forms new stars b) the transfer of material from one star through an accretion disk to another star in a binary star system c) the shockwave from a supernova triggering gas clouds to condense into new stars d) ...
... a) the recycling of stellar material from stars into the interstellar medium which then forms new stars b) the transfer of material from one star through an accretion disk to another star in a binary star system c) the shockwave from a supernova triggering gas clouds to condense into new stars d) ...
Rotation Curves:
... • Half of all disk galaxies show a central bar which contains up to 1/3 of the total light • Bars are almost as flat as surrounding disks – how do we know this? • S0 galaxies also have bars – a bar can persist in the absence of gas • Bar patterns are not static, they rotate with a pattern speed, but ...
... • Half of all disk galaxies show a central bar which contains up to 1/3 of the total light • Bars are almost as flat as surrounding disks – how do we know this? • S0 galaxies also have bars – a bar can persist in the absence of gas • Bar patterns are not static, they rotate with a pattern speed, but ...
Document
... when E. C. Pickering and Annie Cannon began to analyse the emission spectra of the visible stars. The stars they examined were placed into several ‘spectral classes’, each class being designated by a letter of the alphabet. Eventually the number of spectral classes was reduced to seven, the letters ...
... when E. C. Pickering and Annie Cannon began to analyse the emission spectra of the visible stars. The stars they examined were placed into several ‘spectral classes’, each class being designated by a letter of the alphabet. Eventually the number of spectral classes was reduced to seven, the letters ...
Document
... • The uncertainties in the f value is what limits you in practice. These depend on laboratory measurements, and for many lines poor values are known. • A differential analysis is usually employed. That is the ratio of abundances between stars (best if they have the same effective temperature). In th ...
... • The uncertainties in the f value is what limits you in practice. These depend on laboratory measurements, and for many lines poor values are known. • A differential analysis is usually employed. That is the ratio of abundances between stars (best if they have the same effective temperature). In th ...
Star Trek ObservING List - Adirondack astronomy retreat
... It is said that Epsilon Eridani really has a planet. It was discovered by a man named W. Cochran on August 7th, 2000. His name is a real coincidence because a man named Zefram Cochrane, according to Star Trek TNG First Contact movie and TOS episode Metamorphosis, was the inventor of the warp drive w ...
... It is said that Epsilon Eridani really has a planet. It was discovered by a man named W. Cochran on August 7th, 2000. His name is a real coincidence because a man named Zefram Cochrane, according to Star Trek TNG First Contact movie and TOS episode Metamorphosis, was the inventor of the warp drive w ...
VISIBLE STARS AS APPARENT OBSERVATIONAL EVIDENCE IN
... be visible to us with the magnitude with which it appears to us; this in turn would mean a size many thousands of times bigger than the sun itself, which they regard as the greatest absurdity. However, my calculations show me that this business proceeds very differently, namely that taking an averag ...
... be visible to us with the magnitude with which it appears to us; this in turn would mean a size many thousands of times bigger than the sun itself, which they regard as the greatest absurdity. However, my calculations show me that this business proceeds very differently, namely that taking an averag ...
Coordinate Systems - AST 114, Astronomy Lab II for Spring 2017!
... The ecliptic is the apparent path of the Sun, Moon, and planets as seen from the Earth. In another sense, the ecliptic is the path of the Earth’s orbit projected onto the sky. The orbits of the Earth and most of the other planets move in a relatively flat plane around the Sun. ...
... The ecliptic is the apparent path of the Sun, Moon, and planets as seen from the Earth. In another sense, the ecliptic is the path of the Earth’s orbit projected onto the sky. The orbits of the Earth and most of the other planets move in a relatively flat plane around the Sun. ...
Slide 1
... core dies, gravity crushes down, but it crushes even harder than electron degeneracy pressure. As the electrons overlap, they merge with the protons to turn into neutrons. The neutrons all crush together, at which point their neutron pressure is enough to stop the collapse from gravity. ...
... core dies, gravity crushes down, but it crushes even harder than electron degeneracy pressure. As the electrons overlap, they merge with the protons to turn into neutrons. The neutrons all crush together, at which point their neutron pressure is enough to stop the collapse from gravity. ...
Are Gamma-Ray Bursts good Star Formation Indicators?
... is hard to study directly, and uncertainty about the star formation occurring at very high redshifts (z>5). In the latter case, because galaxies (and quasars) are faint and few at high-z, traditional methods become ever more difficult to apply. ...
... is hard to study directly, and uncertainty about the star formation occurring at very high redshifts (z>5). In the latter case, because galaxies (and quasars) are faint and few at high-z, traditional methods become ever more difficult to apply. ...
night watch - Warren Astronomical Society
... would pass near a 15th magnitude star in 1965, and so the passage was observed very closely by several observatories to see if the star would be occulted. We knew the orbital path of Pluto in the sky very accurately, but since a planet’s gravity acts as though it were concentrated at the center of t ...
... would pass near a 15th magnitude star in 1965, and so the passage was observed very closely by several observatories to see if the star would be occulted. We knew the orbital path of Pluto in the sky very accurately, but since a planet’s gravity acts as though it were concentrated at the center of t ...
How to Directly Image a Habitable Planet Around Alpha Centauri
... for forming planets in multi-star systems remains an open question. We know such planets can form because more than 60 circumstellar (as opposed to circumbinary) exoplanets have been found in binary star systems, including cases dynamically similar to Cen AB (such as Cep), i.e. where the stellar ...
... for forming planets in multi-star systems remains an open question. We know such planets can form because more than 60 circumstellar (as opposed to circumbinary) exoplanets have been found in binary star systems, including cases dynamically similar to Cen AB (such as Cep), i.e. where the stellar ...
Lec2015_22
... much higher masses under such conditions – “Top heavy” • If low mass stars were formed, they should be detectable today • If only high-mass stars formed, then no Population III now but study of extreme Population II stars could reveal much about enrichment processes Structure & Evolution of Stars ...
... much higher masses under such conditions – “Top heavy” • If low mass stars were formed, they should be detectable today • If only high-mass stars formed, then no Population III now but study of extreme Population II stars could reveal much about enrichment processes Structure & Evolution of Stars ...
Homework
... A newspaper article reported that astronomers claim people are made of stardust. What does this mean? Pick the answer that best matches what you think “being made of stardust” means. a. “Being made of stardust” is not intended to be taken literally. It means that nobody really knows where atoms come ...
... A newspaper article reported that astronomers claim people are made of stardust. What does this mean? Pick the answer that best matches what you think “being made of stardust” means. a. “Being made of stardust” is not intended to be taken literally. It means that nobody really knows where atoms come ...
AST 207 Test 3 23 November 2009
... a. (3 pts.) For this part only, assume that the mass inside of the radius 4 kpc is the same as the actual galaxy and there is no matter of any kind outside of the radius 4 kpc. Find the rotational velocity at 16 kpc. You must make clear how you found the numbers that you use. b. (1 pts.) In the inne ...
... a. (3 pts.) For this part only, assume that the mass inside of the radius 4 kpc is the same as the actual galaxy and there is no matter of any kind outside of the radius 4 kpc. Find the rotational velocity at 16 kpc. You must make clear how you found the numbers that you use. b. (1 pts.) In the inne ...
1. The catalogue structure
... We have partially processed this enormous body of material. First of all, it is very useful to indicate the location of the constellations mentioned in Ptolemy’s star catalogue geometrically. Let us use a modern map that specifies constellation boundaries for this end. In fig. 2.1. these boundaries ...
... We have partially processed this enormous body of material. First of all, it is very useful to indicate the location of the constellations mentioned in Ptolemy’s star catalogue geometrically. Let us use a modern map that specifies constellation boundaries for this end. In fig. 2.1. these boundaries ...
The Lyre of Orpheus - InteractiveStars.com
... Lyre is the most imaginative and creative of the signs. When they do, like Orpheus, they often strike a truly universal chord, which makes them fascinating to other people, for there can be something magical about them; a touch of other-worldly glamour which ensures that they will never lack friends ...
... Lyre is the most imaginative and creative of the signs. When they do, like Orpheus, they often strike a truly universal chord, which makes them fascinating to other people, for there can be something magical about them; a touch of other-worldly glamour which ensures that they will never lack friends ...
Assignment 3 - Physics Internal Website
... tion/spectral analysis is done by the computer program, Spectra also available on the same desktop. The calibration procedure is described briefly in Appendix A. The spectroscopy is quite flexible, though we will not use all the modes because they can be tedious to set up. Modes available include t ...
... tion/spectral analysis is done by the computer program, Spectra also available on the same desktop. The calibration procedure is described briefly in Appendix A. The spectroscopy is quite flexible, though we will not use all the modes because they can be tedious to set up. Modes available include t ...
Spectral Variations of Three RV Tauri Stars Donald K. Walter
... On the left and in blue is a plot of absolute magnitude as a function of Julian Date (JD) for AD Aql. T as a function of JD is shown in red. The lack of photometric data on and near the dates of our spectroscopic observations limited us to use of the absolute magnitude based on the luminosity class ...
... On the left and in blue is a plot of absolute magnitude as a function of Julian Date (JD) for AD Aql. T as a function of JD is shown in red. The lack of photometric data on and near the dates of our spectroscopic observations limited us to use of the absolute magnitude based on the luminosity class ...
7. When should I observe my target? How long can
... transits the meridian at midnight. • Sun is at RA = 0h on March 21 (spring equinox) • So objects are best observed around: ...
... transits the meridian at midnight. • Sun is at RA = 0h on March 21 (spring equinox) • So objects are best observed around: ...
The Dimensions Program - Asnuntuck Community College
... From telescopes, astronomers can find out many things about stars. In addition to the size and distance from the Earth, astronomers can also determine how bright they are, what they are made of, and approximately how much longer they will exist. When they do die out, astronomers can also tell how th ...
... From telescopes, astronomers can find out many things about stars. In addition to the size and distance from the Earth, astronomers can also determine how bright they are, what they are made of, and approximately how much longer they will exist. When they do die out, astronomers can also tell how th ...
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.