November - LVAstronomy.com
... known as the Milky Way. We know this glow is the plane of our home galaxy and holds a multitude of open star clusters. Dozens of these galactic clusters are found in Cassiopeia. One of the finest, but often overlooked, is NGC-7789. Cassiopeia is one of the most recognized constellations. The constel ...
... known as the Milky Way. We know this glow is the plane of our home galaxy and holds a multitude of open star clusters. Dozens of these galactic clusters are found in Cassiopeia. One of the finest, but often overlooked, is NGC-7789. Cassiopeia is one of the most recognized constellations. The constel ...
Properties of Stars in general
... • Now, if we can find a binary system with a star of mass m in orbit around another star of unknown mass, we can deduce its mass too. • In this way, through observations of stellar binary systems we have been able to find the masses of stars of different types. • It turns out that the absolute brig ...
... • Now, if we can find a binary system with a star of mass m in orbit around another star of unknown mass, we can deduce its mass too. • In this way, through observations of stellar binary systems we have been able to find the masses of stars of different types. • It turns out that the absolute brig ...
Core Theme 2: Constellations
... member of this constellation is Aldebaran, an orangehued, spectral class K5 III giant star. Its name is from ان#$%& اal-dabarān, Arabic for 'the follower' (of the Pleiades). Bull’s eye. ...
... member of this constellation is Aldebaran, an orangehued, spectral class K5 III giant star. Its name is from ان#$%& اal-dabarān, Arabic for 'the follower' (of the Pleiades). Bull’s eye. ...
OTA System Report For June 4, 2009 8:30 AM
... magnitude determined is 14.004 . The star is 0.45 magnitudes dimmer, although close to the GSC2 1 sigma error, this value is approximately 1.5 1 sigma. The star has been matched to a single star. One can only assume it is dimmer than suspected and I recommend not using this star in the future. Natur ...
... magnitude determined is 14.004 . The star is 0.45 magnitudes dimmer, although close to the GSC2 1 sigma error, this value is approximately 1.5 1 sigma. The star has been matched to a single star. One can only assume it is dimmer than suspected and I recommend not using this star in the future. Natur ...
The magnitude scale
... The faintest object visible to the naked eye from a dark site has magnitude six. Sirius, the brightest star, has magnitude -1.4. The planets, Mercury, Venus, Mars, Jupiter and Saturn vary in brightness, but are generally quite bright - the brightest being Venus which can reach a magnitude of -4.4. ...
... The faintest object visible to the naked eye from a dark site has magnitude six. Sirius, the brightest star, has magnitude -1.4. The planets, Mercury, Venus, Mars, Jupiter and Saturn vary in brightness, but are generally quite bright - the brightest being Venus which can reach a magnitude of -4.4. ...
Stars and Galaxies part 3
... • Because the parallax angle gets increasingly small the further away the star is, parallax can only be used to calculate the distance to stars closer than 400 light-years away, and is most accurate for close stars. • FYI: Hipparcos was a satellite that operated between 1989 and 1993. Its purpose wa ...
... • Because the parallax angle gets increasingly small the further away the star is, parallax can only be used to calculate the distance to stars closer than 400 light-years away, and is most accurate for close stars. • FYI: Hipparcos was a satellite that operated between 1989 and 1993. Its purpose wa ...
1. absolute brightness -
... to their spectral characteristics. • They are classified according to the spectral lines observed, originally the amount of Hydrogen the lines seemed to indicate. • Today they are ranked in order of surface temperature. O, B, A, F, G, K, M from hottest to coolest. ...
... to their spectral characteristics. • They are classified according to the spectral lines observed, originally the amount of Hydrogen the lines seemed to indicate. • Today they are ranked in order of surface temperature. O, B, A, F, G, K, M from hottest to coolest. ...
The Electromagnetic Spectrum
... • Short wave radiation is produced by objects with…? • What is an emission spectrum? • What is an absorption spectrum? • Why do we know that Hydrogen and Helium are found on most stars? • How do we know that the Sun’s surface temperature is 5800 °K? • What is the Doppler Effect? What does it tell us ...
... • Short wave radiation is produced by objects with…? • What is an emission spectrum? • What is an absorption spectrum? • Why do we know that Hydrogen and Helium are found on most stars? • How do we know that the Sun’s surface temperature is 5800 °K? • What is the Doppler Effect? What does it tell us ...
Star Life Cycle
... Eventually this core collapses (in an instant). As the iron atoms are crushed together in this gravitational collapse, the core temperature rises to about 100 billion degrees. ...
... Eventually this core collapses (in an instant). As the iron atoms are crushed together in this gravitational collapse, the core temperature rises to about 100 billion degrees. ...
Diapositiva 1
... Explanation: Two famous New York City icons stand tall in the above photo. On the left looms the Statue of Liberty, a universal symbol of freedom, while on the right rises the Empire State Building, now the second largest building in the city. What's unique about this once-in-a-lifetime photograph, ...
... Explanation: Two famous New York City icons stand tall in the above photo. On the left looms the Statue of Liberty, a universal symbol of freedom, while on the right rises the Empire State Building, now the second largest building in the city. What's unique about this once-in-a-lifetime photograph, ...
DOC - Cool Cosmos
... The way stars live and die makes a lot of sense if you consider what a star really is. Simply put, a star is a large amount of gas and dust that is collapsing under the force of gravity. At first, this crush of gravity makes the inside of the star hot enough to ignite a nuclear explosion. This explo ...
... The way stars live and die makes a lot of sense if you consider what a star really is. Simply put, a star is a large amount of gas and dust that is collapsing under the force of gravity. At first, this crush of gravity makes the inside of the star hot enough to ignite a nuclear explosion. This explo ...
The Night Sky This Month - Usk Astronomical Society
... middle of September and the middle of October is a good time, this year, for observing Mercury. Venus is in the west in the evening twilight throughout the month and is unfavourable. Mars is just west of south at dusk throughout this month and is poorly placed for observation. In the first days of t ...
... middle of September and the middle of October is a good time, this year, for observing Mercury. Venus is in the west in the evening twilight throughout the month and is unfavourable. Mars is just west of south at dusk throughout this month and is poorly placed for observation. In the first days of t ...
Evolution Cycle of Stars
... temperature of a white dwarf is 8000C or more, but being smaller than the Sun their overall luminosity's are 1% of the Sun or less. • White dwarfs are the shrunken remains of normal stars, whose nuclear energy supplies have been used up. White dwarf consist of degenerate matter with a very high dens ...
... temperature of a white dwarf is 8000C or more, but being smaller than the Sun their overall luminosity's are 1% of the Sun or less. • White dwarfs are the shrunken remains of normal stars, whose nuclear energy supplies have been used up. White dwarf consist of degenerate matter with a very high dens ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.