Powerpoint Review
... Imagine that you had a small candle and a big spotlight. If a friend held these about ten feet from you, which of these would be the brightest? The spotlight right? Now imagine the candle is ten feet from you and the spotlight is one mile away from you. Which one would be brighter? The candle would ...
... Imagine that you had a small candle and a big spotlight. If a friend held these about ten feet from you, which of these would be the brightest? The spotlight right? Now imagine the candle is ten feet from you and the spotlight is one mile away from you. Which one would be brighter? The candle would ...
Homework #7 (Ch. 19)
... 9. Chaisson Review and Discussion 19.17 What do star clusters and associations have to do with star formation? 10. Chaisson Review and Discussion 19.18 Compare and contrast the observed properties of open star clusters and globular star clusters. 11. Chaisson Review and Discussion 19.19 How can we ...
... 9. Chaisson Review and Discussion 19.17 What do star clusters and associations have to do with star formation? 10. Chaisson Review and Discussion 19.18 Compare and contrast the observed properties of open star clusters and globular star clusters. 11. Chaisson Review and Discussion 19.19 How can we ...
AST1100 Lecture Notes
... by the Sun, not the planets. The total mass of the planets only make up about one part in 1000 of the total mass of the solar system. If this is the normal ratio, and we have no reason to believe otherwise, then the planets can only explain a tiny part of the invisible matter. Brown dwarf stars (mor ...
... by the Sun, not the planets. The total mass of the planets only make up about one part in 1000 of the total mass of the solar system. If this is the normal ratio, and we have no reason to believe otherwise, then the planets can only explain a tiny part of the invisible matter. Brown dwarf stars (mor ...
Studying Variable stars using Small Telescopes Observational
... Rotating variables are normally late type stars with enhanced solar like magnetic activities such as dark spots, highly energetic flares, facular networks, chromospheric plages, emission from transition region and corona. ...
... Rotating variables are normally late type stars with enhanced solar like magnetic activities such as dark spots, highly energetic flares, facular networks, chromospheric plages, emission from transition region and corona. ...
Measuring the Properties of Stars - Sierra College Astronomy Home
... The sizes of a few very large stars have been measured directly by interferometry. Knowing the temperature of a star gives its energy emitted per square meter. Knowing the total energy emitted (from the absolute magnitude) one can then calculate the surface area of the star. From that the di ...
... The sizes of a few very large stars have been measured directly by interferometry. Knowing the temperature of a star gives its energy emitted per square meter. Knowing the total energy emitted (from the absolute magnitude) one can then calculate the surface area of the star. From that the di ...
The Stars education kit - Student activities 1-4
... apart because their distance from Earth varies. The ‘shape’ they form is only seen from Earth. The constellation of Orion forms the shape of a hunter and can be seen high in the night sky during summer (in the Southern Hemisphere). It is a constellation that contains two famous deep sky wonders – th ...
... apart because their distance from Earth varies. The ‘shape’ they form is only seen from Earth. The constellation of Orion forms the shape of a hunter and can be seen high in the night sky during summer (in the Southern Hemisphere). It is a constellation that contains two famous deep sky wonders – th ...
Lecture 9
... The Temp and Density get high enough for the triple-alpha reaction as a star approaches the tip of the RGB. Because the core is supported by electron degeneracy (with no temperature dependence) when the triple-alpha starts, there is no corresponding expansion of the core. So the temperature sky ...
... The Temp and Density get high enough for the triple-alpha reaction as a star approaches the tip of the RGB. Because the core is supported by electron degeneracy (with no temperature dependence) when the triple-alpha starts, there is no corresponding expansion of the core. So the temperature sky ...
phys-1600 - Dave Heppenstall
... • The intense cratering on the moon can be traced back to around 4 million years ago. • The Earth also experienced this large-scale cratering, but unlike the Earth, the moon did not experience the same type of reshaping and erosion that the Earth did. • If the moon ever did have an atmosphere due to ...
... • The intense cratering on the moon can be traced back to around 4 million years ago. • The Earth also experienced this large-scale cratering, but unlike the Earth, the moon did not experience the same type of reshaping and erosion that the Earth did. • If the moon ever did have an atmosphere due to ...
1 Stars
... For most of a star’s life, hydrogen atoms fuse to form helium atoms. A star like this is a main sequence star. The hotter a main sequence star is, the brighter it is. A star remains on the main sequence as long as it is fusing hydrogen to form helium. Our Sun has been a main sequence star for about ...
... For most of a star’s life, hydrogen atoms fuse to form helium atoms. A star like this is a main sequence star. The hotter a main sequence star is, the brighter it is. A star remains on the main sequence as long as it is fusing hydrogen to form helium. Our Sun has been a main sequence star for about ...
August Newsletter
... There are five August constellations right above us (in the southern hemisphere) and include some of the most spectacular and well-known objects in the sky. The centre of our Milky Way galaxy is located in the direction of Sagittarius and because of this Sagittarius contains more deep sky objects th ...
... There are five August constellations right above us (in the southern hemisphere) and include some of the most spectacular and well-known objects in the sky. The centre of our Milky Way galaxy is located in the direction of Sagittarius and because of this Sagittarius contains more deep sky objects th ...
File - YEAR 11 EBSS PHYSICS DETAILED STUDIES
... 1 parsec is the distance to a star that would show 1 arcsec of parallax. (206 265 AU) ...
... 1 parsec is the distance to a star that would show 1 arcsec of parallax. (206 265 AU) ...
Chemical Universe. - University of Texas Astronomy
... at the heart of the nebula, becomes a white dwarf — a ball of matter only about as big as Earth, but containing most of the star’s mass. It no longer produces energy through nuclear reactions, but shines through the heat built up during its long life. This will be the Sun’s fate. More massive stars, ...
... at the heart of the nebula, becomes a white dwarf — a ball of matter only about as big as Earth, but containing most of the star’s mass. It no longer produces energy through nuclear reactions, but shines through the heat built up during its long life. This will be the Sun’s fate. More massive stars, ...
Powerpoint slides
... Surprisingly enough, the answer is eight feet, or approximately 20 CD diameters away. Galaxies are much closer together than stars, relative to their size. Do not be fooled, however; it is still very difficult to travel between them. You can ask another volunteer to be a photon of light traveling be ...
... Surprisingly enough, the answer is eight feet, or approximately 20 CD diameters away. Galaxies are much closer together than stars, relative to their size. Do not be fooled, however; it is still very difficult to travel between them. You can ask another volunteer to be a photon of light traveling be ...
Study Island
... 1. How does the mass of a toy car affect its speed down a ramp? 2. How does the position of the Sun, moons, planets and stars affect a person's personality traits and daily behavior patterns? 3. Which type of pan - copper, aluminum, or glass - heats up the quickest? 4. Which type of chemicals can re ...
... 1. How does the mass of a toy car affect its speed down a ramp? 2. How does the position of the Sun, moons, planets and stars affect a person's personality traits and daily behavior patterns? 3. Which type of pan - copper, aluminum, or glass - heats up the quickest? 4. Which type of chemicals can re ...
The Milky Way Galaxy
... If all the mass there really were only that of visible matter, its gravity would not be enough to retain the hot gas, which would evaporate rapidly. Since the gas is there, there must be more gravity, hence dark matter. ...
... If all the mass there really were only that of visible matter, its gravity would not be enough to retain the hot gas, which would evaporate rapidly. Since the gas is there, there must be more gravity, hence dark matter. ...
Chapter 12
... Temperature’s Effect on Spectra • Consequently, absorption lines will be present or absent depending on the presence or absence of an electron at the right energy level and this is very much dependent on temperature • Adjusting for temperature, a star’s composition can be found – interestingly, vir ...
... Temperature’s Effect on Spectra • Consequently, absorption lines will be present or absent depending on the presence or absence of an electron at the right energy level and this is very much dependent on temperature • Adjusting for temperature, a star’s composition can be found – interestingly, vir ...
Chapter 15
... the hydrogen fuel in its core to make helium. The helium is basically just sitting there, so it's not producing any energy. Instead, the core is shrinking and getting hotter. Before long, it'll get hot enough to ignite the helium, which will begin fusing together to make heavier elements. When that ...
... the hydrogen fuel in its core to make helium. The helium is basically just sitting there, so it's not producing any energy. Instead, the core is shrinking and getting hotter. Before long, it'll get hot enough to ignite the helium, which will begin fusing together to make heavier elements. When that ...
Progenitor and environment of the peculiar red nova V838 Mon
... B3V companion’s SED disappeared in the eclipse-like event in December 2006 (blue line) ...
... B3V companion’s SED disappeared in the eclipse-like event in December 2006 (blue line) ...
My Constellation
... glitters with an unusual metallic red while the entire region is bathed in a pale red nebula, lit from the same star. This red supergiant has a visual binary that just might be visible, depending on local conditions and the size of one's scope (see below). The star is estimated to be between 285 sun ...
... glitters with an unusual metallic red while the entire region is bathed in a pale red nebula, lit from the same star. This red supergiant has a visual binary that just might be visible, depending on local conditions and the size of one's scope (see below). The star is estimated to be between 285 sun ...
Interstellar medium, birth and life of stars
... The most massive pre–main-sequence stars take the shortest time to become main-sequence stars (O and B stars). In the final stages of pre–main-sequence contraction, when hydrogen fusion is about to begin in the core, the pre–main-sequence star may undergo vigorous chromospheric activity that eje ...
... The most massive pre–main-sequence stars take the shortest time to become main-sequence stars (O and B stars). In the final stages of pre–main-sequence contraction, when hydrogen fusion is about to begin in the core, the pre–main-sequence star may undergo vigorous chromospheric activity that eje ...
Star formation PowerPoint
... until it is in equilibrium. This is stage 7: The star has reached the main sequence and will remain there as long as it has hydrogen to fuse. ...
... until it is in equilibrium. This is stage 7: The star has reached the main sequence and will remain there as long as it has hydrogen to fuse. ...
Document
... drop the class. Try putting M = m…you get d = 10 parsecs …or take my word for it! This also means that if you know the distance to a star (d), and the apparent magnitude (which you can measure by the size of an image on a photograph), then you can use this equation to find distance... Example if you ...
... drop the class. Try putting M = m…you get d = 10 parsecs …or take my word for it! This also means that if you know the distance to a star (d), and the apparent magnitude (which you can measure by the size of an image on a photograph), then you can use this equation to find distance... Example if you ...
Stars, Galaxies, and the Universe Section 1 Distances to Stars
... • The apparent motion of stars, or motion as it appears from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear ...
... • The apparent motion of stars, or motion as it appears from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear ...
Astro 6590: Galaxies and the Universe Astro
... and about 10X as much by mass of dark matter. The stars and gas are about 70% hydrogen by mass and 25% helium, the rest being heavier elements (called "metals"). • Typical scales are: masses between 106 to 1012 M (1 solar mass is 2 x 1030 kg), and sizes ~ 1-100 kpc (1 pc = 3.1 x 1016 m). Galaxies t ...
... and about 10X as much by mass of dark matter. The stars and gas are about 70% hydrogen by mass and 25% helium, the rest being heavier elements (called "metals"). • Typical scales are: masses between 106 to 1012 M (1 solar mass is 2 x 1030 kg), and sizes ~ 1-100 kpc (1 pc = 3.1 x 1016 m). Galaxies t ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.