Atoms and Stars IST 3360 and IST 1990
... Danish nobleman and astronomer Built great observatories on his island Fights, duels, possibly died from being drunk, but also careful astronomical measurements • Convinced astronomy needed good measurements ...
... Danish nobleman and astronomer Built great observatories on his island Fights, duels, possibly died from being drunk, but also careful astronomical measurements • Convinced astronomy needed good measurements ...
Using color photometry to separate transiting exoplanets from false
... limitations of the radial velocity technique. Of the 59 candidates that were identified during the 2001 campaign of OGLEIII, 7 were considered too faint for follow-up observation and only 6 of the remaining candidates had radial velocity variations less than a few km s−1 and no sign of secondary tra ...
... limitations of the radial velocity technique. Of the 59 candidates that were identified during the 2001 campaign of OGLEIII, 7 were considered too faint for follow-up observation and only 6 of the remaining candidates had radial velocity variations less than a few km s−1 and no sign of secondary tra ...
The Interstellar Medium White Paper
... From a theoretical perspective, although the picture is becoming steadily clearer, there are many aspects of the dynamics of the Galactic nucleus and its outflow that we do not understand. It is still under debate, for instance, whether it has indeed been star formation (Crocker and Aharonian 2011) ...
... From a theoretical perspective, although the picture is becoming steadily clearer, there are many aspects of the dynamics of the Galactic nucleus and its outflow that we do not understand. It is still under debate, for instance, whether it has indeed been star formation (Crocker and Aharonian 2011) ...
P7 Further Physics
... When I look at these stars some appear brighter than others. This because they are either brighter stars or closer to me. For example, the star Antares is 10,000 times brighter than the sun but it is 500 light years away from me, so it is only the 15th brightest star in the night sky. ...
... When I look at these stars some appear brighter than others. This because they are either brighter stars or closer to me. For example, the star Antares is 10,000 times brighter than the sun but it is 500 light years away from me, so it is only the 15th brightest star in the night sky. ...
Understanding the Astrophysics of Galaxy Evolution: the role of
... Lyman Break galaxies (LBGs) to be isolated efficiently at redshifts ∼ 3, thus breaking the z = 1 redshift barrier that had dogged the field for many years. Spectroscopy then confirmed the redshifts and showed that LBGs had moderate mass (109 −1010 M⊙ ) and metallicity (0.3 solar), that they were for ...
... Lyman Break galaxies (LBGs) to be isolated efficiently at redshifts ∼ 3, thus breaking the z = 1 redshift barrier that had dogged the field for many years. Spectroscopy then confirmed the redshifts and showed that LBGs had moderate mass (109 −1010 M⊙ ) and metallicity (0.3 solar), that they were for ...
Hands On Astronomy
... surprised at how far apart the two objects are? What’s Going On? Most people are very surprised when they see the scaled size and distance between the earth and the moon. Studies of the astronomy misconceptions held by students (and even adults!) reveal that most people believe that the moon is much ...
... surprised at how far apart the two objects are? What’s Going On? Most people are very surprised when they see the scaled size and distance between the earth and the moon. Studies of the astronomy misconceptions held by students (and even adults!) reveal that most people believe that the moon is much ...
The Perseid Meteor Shower
... A meteor shower is worth watching. Perseid meteor showers are known for their regularity. Every year, around the 12th of August, people watch the Perseids. These falling stars have been seen for almost 2000 years. Every year, there is a good number of falling stars. It may be possible to see as many ...
... A meteor shower is worth watching. Perseid meteor showers are known for their regularity. Every year, around the 12th of August, people watch the Perseids. These falling stars have been seen for almost 2000 years. Every year, there is a good number of falling stars. It may be possible to see as many ...
Lab 2: An OpenGL Solar System
... how your application could look. The corresponding video can be found on the course homepage. ...
... how your application could look. The corresponding video can be found on the course homepage. ...
Edexcel GCE - The Student Room
... All quasars show large red shifts in the light received from them. This shows that they A ...
... All quasars show large red shifts in the light received from them. This shows that they A ...
Notes for Class 7, March 2
... o Present techniques best for planets close to star o So far, too close to star, too hot o If planets around other stars are common, maybe there will be some planets with the right conditions, and maybe some of them will have life ...
... o Present techniques best for planets close to star o So far, too close to star, too hot o If planets around other stars are common, maybe there will be some planets with the right conditions, and maybe some of them will have life ...
The Starry Messenger
... Surely it is a great thing to increase the numerous host of fixed stars previously visible to the unaided vision, adding countless more which have never before been seen, exposing these plainly to the eye in numbers ten times exceeding the old and familiar stars. It is a very beautiful thing, and mo ...
... Surely it is a great thing to increase the numerous host of fixed stars previously visible to the unaided vision, adding countless more which have never before been seen, exposing these plainly to the eye in numbers ten times exceeding the old and familiar stars. It is a very beautiful thing, and mo ...
Early-type stars in the core of the young open cluster Westerlund 2
... is dominated by strong and broad H Balmer lines. Weak absorption lines of He λλ 4388, 4471, Mg λ 4481 and Si λ 4552 are also seen. The He λ 4471/Mg λ 4481 intensity ratio indicates a spectral type B8-A0. The appearance of some weak metallic lines favours an A0 classification, whilst ...
... is dominated by strong and broad H Balmer lines. Weak absorption lines of He λλ 4388, 4471, Mg λ 4481 and Si λ 4552 are also seen. The He λ 4471/Mg λ 4481 intensity ratio indicates a spectral type B8-A0. The appearance of some weak metallic lines favours an A0 classification, whilst ...
Protostellar/PMS Mass Infall Luminosity Problem
... However, this is still a rather poor indicator of age. ...
... However, this is still a rather poor indicator of age. ...
The Project Gutenberg EBook of History of Astronomy, by George
... surrounded and bounded by the heaven, which was a solid vault, or hemisphere, with its concavity turned downwards. The stars seemed to be fixed on this vault; the moon, and later the planets, were seen to crawl over it. It was a great step to look on the vault as a ...
... surrounded and bounded by the heaven, which was a solid vault, or hemisphere, with its concavity turned downwards. The stars seemed to be fixed on this vault; the moon, and later the planets, were seen to crawl over it. It was a great step to look on the vault as a ...
Planets Orbiting the Sun and Other Stars - Beck-Shop
... terrestrial planets and the region of the major planets. There are three main groupings, the Atens, the Amors and the Apollos. They are distinguished by their orbits. The Atens have a semi-major axis a < 1 AU and an aphelion greater than 0.988. This means they cross the orbit of Venus but lie within ...
... terrestrial planets and the region of the major planets. There are three main groupings, the Atens, the Amors and the Apollos. They are distinguished by their orbits. The Atens have a semi-major axis a < 1 AU and an aphelion greater than 0.988. This means they cross the orbit of Venus but lie within ...
Cosmic distance scales - Inside Mines
... • Classified as a function of luminosity / surface temperature • At various stages of life: giant, supergiant... • Dying or dead: white / brown dwarves, neutron stars, pulsars,... • Exploding: supernovae, novae, X-ray / gamma-ray bursts... • Nebulae – clouds of glowing gas / star birthplaces • Galax ...
... • Classified as a function of luminosity / surface temperature • At various stages of life: giant, supergiant... • Dying or dead: white / brown dwarves, neutron stars, pulsars,... • Exploding: supernovae, novae, X-ray / gamma-ray bursts... • Nebulae – clouds of glowing gas / star birthplaces • Galax ...
Exercise 11
... A similar shift is seen for all stars during the course of one year. Such small displacements are involved that the measurement of stellar parallax is most commonly done by photographing a field of stars at intervals of six months, and then measuring the relative positions of the stars with a micro ...
... A similar shift is seen for all stars during the course of one year. Such small displacements are involved that the measurement of stellar parallax is most commonly done by photographing a field of stars at intervals of six months, and then measuring the relative positions of the stars with a micro ...
Chapter 2
... So far, the night sky has been described as it would appear to someone at the Riverside Observatory. Actually, the sky would look about the same for other stargazers in most of the United States. For those observers, only a relatively small part of the sky is contained in the north circumpolar cap, ...
... So far, the night sky has been described as it would appear to someone at the Riverside Observatory. Actually, the sky would look about the same for other stargazers in most of the United States. For those observers, only a relatively small part of the sky is contained in the north circumpolar cap, ...
History of Astronomy
... astronomers did) as a circular plane, surrounded and bounded by the heaven, which was a solid vault, or hemisphere, with its concavity turned downwards. The stars seemed to be fixed on this vault; the moon, and later the planets, were seen to crawl over it. It was a great step to look on the vault a ...
... astronomers did) as a circular plane, surrounded and bounded by the heaven, which was a solid vault, or hemisphere, with its concavity turned downwards. The stars seemed to be fixed on this vault; the moon, and later the planets, were seen to crawl over it. It was a great step to look on the vault a ...
Galactic Nebulae
... Largest HII region – molecular cloud complex in inner part Of galaxy and one of closest to sun Cascade of star formation within M17 – open star cluster NGC6618 – obscured by gas and dust Over 100 massive hot O-B type stars embedded with M17 ...
... Largest HII region – molecular cloud complex in inner part Of galaxy and one of closest to sun Cascade of star formation within M17 – open star cluster NGC6618 – obscured by gas and dust Over 100 massive hot O-B type stars embedded with M17 ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.