Stellar Characteristics and Evolution
... Flash. The spectral type and luminosity is not constant however, and some stars can evolve though a large spread of spectral types while in the Horizontal Branch. Eventually, the Helium in the core is exhausted and converted to carbon. The core becomes degenerate and collapses, and the star expands ...
... Flash. The spectral type and luminosity is not constant however, and some stars can evolve though a large spread of spectral types while in the Horizontal Branch. Eventually, the Helium in the core is exhausted and converted to carbon. The core becomes degenerate and collapses, and the star expands ...
27/04/2016 - Daphne`s Daily Quiz
... 6. In jewellery, what name is given to the flat plate at the bottom of a gem? A CULET 7. Which national park in New Zealand received UNESCO world heritage status, both on cultural and on natural grounds, and is the oldest National Park in New Zealand? ...
... 6. In jewellery, what name is given to the flat plate at the bottom of a gem? A CULET 7. Which national park in New Zealand received UNESCO world heritage status, both on cultural and on natural grounds, and is the oldest National Park in New Zealand? ...
Standard candles
... For distances which are too large to measure using parallax, astronomers use 'standard candles'. Light sources which are further away appear fainter because the light is spread out over a greater area. If we know how luminous a source really is, then we can estimate its distance from how bright it a ...
... For distances which are too large to measure using parallax, astronomers use 'standard candles'. Light sources which are further away appear fainter because the light is spread out over a greater area. If we know how luminous a source really is, then we can estimate its distance from how bright it a ...
Hot-plate model of stars March 14 − Observed properties of stars
... (companion of Sirius A) have about the same temperature. How can Sirius B be 10,000 times fainter? a. Sirius B is 100 times farther away. b. Sirius B is 100 times smaller c. Sirius A took away the mass d. Sirius A took away the light ...
... (companion of Sirius A) have about the same temperature. How can Sirius B be 10,000 times fainter? a. Sirius B is 100 times farther away. b. Sirius B is 100 times smaller c. Sirius A took away the mass d. Sirius A took away the light ...
Part B
... luminous electromagnetic events known to occur in the Universe. • First detected in 1967 by the Vela satellites, • Redshifts clarified their distance and combined with their luminosity connected them to the deaths of massive stars. ...
... luminous electromagnetic events known to occur in the Universe. • First detected in 1967 by the Vela satellites, • Redshifts clarified their distance and combined with their luminosity connected them to the deaths of massive stars. ...
Constellation Packet - Mr. Jenkins` Classroom
... was his mother was about to kill her when zeus intervened and sent both mother and son into the sky as the greater and lesser bears. The way zeus got the bears into the sky explains why their tails are so long, apparently zeus grabbed them by their tails and swung them around over his head and final ...
... was his mother was about to kill her when zeus intervened and sent both mother and son into the sky as the greater and lesser bears. The way zeus got the bears into the sky explains why their tails are so long, apparently zeus grabbed them by their tails and swung them around over his head and final ...
2011 - Edexcel
... 5 (a) The planet Saturn is well-known for its prominent ring system. Name two other planets that have ring systems. ...
... 5 (a) The planet Saturn is well-known for its prominent ring system. Name two other planets that have ring systems. ...
nebula - Harding University
... Some proposed that the stars surfaces pulsated this rapidly, but pulsations this rapid would cause the star to explode. Some astronomers proposed that the pulsating signal arose from the rotation of a star. Although most astronomers at that time believed that the majority of “dead” stars were white ...
... Some proposed that the stars surfaces pulsated this rapidly, but pulsations this rapid would cause the star to explode. Some astronomers proposed that the pulsating signal arose from the rotation of a star. Although most astronomers at that time believed that the majority of “dead” stars were white ...
File - YEAR 11 EBSS PHYSICS DETAILED STUDIES
... While not known at the time, this categorisation corresponded to the different temperatures, from O0 (hottest) to M9 (coolest). The reason for the changes between the classes was to do with some atoms becoming ionised at various temperature and at cooler temperature the light may not have sufficie ...
... While not known at the time, this categorisation corresponded to the different temperatures, from O0 (hottest) to M9 (coolest). The reason for the changes between the classes was to do with some atoms becoming ionised at various temperature and at cooler temperature the light may not have sufficie ...
A Collection of Curricula for the STARLAB Deep Sky Objects
... Nebulae absorb light from nearby stars and radiate it back into space. Most nebulae glow red, the color of hydrogen gas. The brightest nebula is the Orion Nebula (see slide #60) which can be seen with the unaided eye in a dark sky. Nebulae are very important in astronomy because they are the key to ...
... Nebulae absorb light from nearby stars and radiate it back into space. Most nebulae glow red, the color of hydrogen gas. The brightest nebula is the Orion Nebula (see slide #60) which can be seen with the unaided eye in a dark sky. Nebulae are very important in astronomy because they are the key to ...
Two Dissipating Exoplanet Atmospheres Taken from: Hubble
... When viewed from Earth, less than 10 percent of these Hot Jupiters orbit so that they pass in front of, or transit, their stars. During transit they measurably dim the brightness of the stars they cross. This data can be used to determine an exoplanet’s size. Astronomers can also study the chemical ...
... When viewed from Earth, less than 10 percent of these Hot Jupiters orbit so that they pass in front of, or transit, their stars. During transit they measurably dim the brightness of the stars they cross. This data can be used to determine an exoplanet’s size. Astronomers can also study the chemical ...
Astronomy 200 Problem Set No
... forms stars. Assume that 25% of the cloud’s mass goes into stars, a high but not unreasonable star formation efficiency. You may further assume this cloud only forms relatively high mass stars – M ≥ 3.0MSun up to a maximum mass of 30MSun . If the newly formed stars are distributed in mass according ...
... forms stars. Assume that 25% of the cloud’s mass goes into stars, a high but not unreasonable star formation efficiency. You may further assume this cloud only forms relatively high mass stars – M ≥ 3.0MSun up to a maximum mass of 30MSun . If the newly formed stars are distributed in mass according ...
White Dwarfs and Neutron Stars
... • Neutron stars can form powerful jets of matter and energy • Previously only thought possible with black holes • Binary system with neutron star gaining matter from white dwarf companion’s atmosphere in an accretion disk • Neutron star is tiny compared to white dwarf but is very dense and about 14 ...
... • Neutron stars can form powerful jets of matter and energy • Previously only thought possible with black holes • Binary system with neutron star gaining matter from white dwarf companion’s atmosphere in an accretion disk • Neutron star is tiny compared to white dwarf but is very dense and about 14 ...
charts_set_7
... Earth-orbit parallax using ground-based telescopes good for stars within 30 pc (1000 or so). Tiny volume of Milky Way galaxy. Other methods later. Our nearest stellar neighbors ...
... Earth-orbit parallax using ground-based telescopes good for stars within 30 pc (1000 or so). Tiny volume of Milky Way galaxy. Other methods later. Our nearest stellar neighbors ...
Chapter 09 - The Independent School
... parallax, nearby stars also show continuous motions across the sky. ...
... parallax, nearby stars also show continuous motions across the sky. ...
Magnitudes and Colours of Stars - Lincoln
... 3. When both mv and the distance are known, the absolute visual magnitude Mv is calculated. ...
... 3. When both mv and the distance are known, the absolute visual magnitude Mv is calculated. ...
H-R Diagram
... absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laboratory, you will construct an H-R diagram using data on the 20 stars that are nearest to our sun (Figure 21.1) and the ...
... absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laboratory, you will construct an H-R diagram using data on the 20 stars that are nearest to our sun (Figure 21.1) and the ...
The Helix Nebula • NGC 7293
... tentacles have been observed from ground-based telescopes for decades, but never have they been seen in such detail. They may actually lie in a disk encircling the hot star. The Helix, located 650 light-years away, is one of the closest planetary nebulae to Earth. This glowing gas cloud appears very ...
... tentacles have been observed from ground-based telescopes for decades, but never have they been seen in such detail. They may actually lie in a disk encircling the hot star. The Helix, located 650 light-years away, is one of the closest planetary nebulae to Earth. This glowing gas cloud appears very ...
Word
... while the bright blue star Rigel is in the hunter’s knee. (We’ll talk about the colors of stars later.) Also, take a look nearly overhead and you should be able to see the Pleiades star cluster. (You might have to wait for the sky to get darker a bit later.) This cluster was called the Seven Sisters ...
... while the bright blue star Rigel is in the hunter’s knee. (We’ll talk about the colors of stars later.) Also, take a look nearly overhead and you should be able to see the Pleiades star cluster. (You might have to wait for the sky to get darker a bit later.) This cluster was called the Seven Sisters ...
Globular Clusters Dynamic Lives The
... the more mass a star loses, the bluer it will appear. These astronomers have found that among the clusters of a given intermediate metallicity, the morphology of the horizontal branch depends on the cluster density and concentration, in the sense that denser and more concentrated clusters tend to ha ...
... the more mass a star loses, the bluer it will appear. These astronomers have found that among the clusters of a given intermediate metallicity, the morphology of the horizontal branch depends on the cluster density and concentration, in the sense that denser and more concentrated clusters tend to ha ...
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.