EarthComm_c1s9
... some astronomers think that a supernova some five billion years ago may have started the development of the Sun and the planets. The Creation of Elements Through Stellar Processes As you read, nuclear fusion in a star begins in its core. The size of the core depends on the mass of the star. In a sta ...
... some astronomers think that a supernova some five billion years ago may have started the development of the Sun and the planets. The Creation of Elements Through Stellar Processes As you read, nuclear fusion in a star begins in its core. The size of the core depends on the mass of the star. In a sta ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... Why does the disk of our galaxy appear blue? (a) all the red starlight is scattered out of our view. (b) the blue light is recombination radiation from HII regions. (c) the blue light is emission from elements in the interstellar medium heavier than hydrogen. (d) it is illuminated by the Magellanic ...
... Why does the disk of our galaxy appear blue? (a) all the red starlight is scattered out of our view. (b) the blue light is recombination radiation from HII regions. (c) the blue light is emission from elements in the interstellar medium heavier than hydrogen. (d) it is illuminated by the Magellanic ...
Navigating the Night Sky – Teacher Guide Argos Online Subject
... • Identify limitations of the map: o Do the constellations near the horizon on the star map look like the constellations in the sky? If not, how do they look different? -If you are using the star maps in Stardate Magazine, the answer is obviously No. If you are using the star maps from Starmaps.com, ...
... • Identify limitations of the map: o Do the constellations near the horizon on the star map look like the constellations in the sky? If not, how do they look different? -If you are using the star maps in Stardate Magazine, the answer is obviously No. If you are using the star maps from Starmaps.com, ...
Understanding the H-R Diagram
... Polaris is a blue-green Cepheid variable star (its size brightness changes periodically, with period of 3.969778 days; it varies between mag 1.92 and 2.07). Polaris has a relatively dim companion star (9th magnitude). Polaris' distance from Earth has been estimated to be from 360 to 820 light years. ...
... Polaris is a blue-green Cepheid variable star (its size brightness changes periodically, with period of 3.969778 days; it varies between mag 1.92 and 2.07). Polaris has a relatively dim companion star (9th magnitude). Polaris' distance from Earth has been estimated to be from 360 to 820 light years. ...
Virtual HR Diagram Lab
... Draw an arrow showing the direction of increasing mass for main sequence stars on the diagram. Label it M. (Note: this arrow only applies to main sequence stars, but that is over 90% of stars.) ...
... Draw an arrow showing the direction of increasing mass for main sequence stars on the diagram. Label it M. (Note: this arrow only applies to main sequence stars, but that is over 90% of stars.) ...
Picture: Alnitak is the left-hand star in Orion`s Belt. Image: NASA
... absorption bands of carbon-containing molecules; the Swan bands of C2 are especially prominent, with absorption by CN, CH, C3, SiC2, and CaII present to varying degrees, with often a strong sodium D line. Carbon stars, also known as C stars, have carbon/oxygen ratios that are typically four to five ...
... absorption bands of carbon-containing molecules; the Swan bands of C2 are especially prominent, with absorption by CN, CH, C3, SiC2, and CaII present to varying degrees, with often a strong sodium D line. Carbon stars, also known as C stars, have carbon/oxygen ratios that are typically four to five ...
![31 — Main-Sequence Stars [Revision : 1.1]](http://s1.studyres.com/store/data/015926256_1-97d746cbe97ccc13b433136b208bf071-300x300.png)
31 — Main-Sequence Stars [Revision : 1.1]
... Core contracts somewhat to make these changes Faster nuclear burning occurs Luminosity increases ...
... Core contracts somewhat to make these changes Faster nuclear burning occurs Luminosity increases ...
MilkyWay
... • Surveys of Giant Molecular Clouds (GMCs) are likely to trace the spiral arms since these are sites of star formation • positions interior to Sun’s orbit in Galaxy have some distance ambiguity •Less distance ambiguity outside of Solar orbit, and better evidence of arm-like morphology ...
... • Surveys of Giant Molecular Clouds (GMCs) are likely to trace the spiral arms since these are sites of star formation • positions interior to Sun’s orbit in Galaxy have some distance ambiguity •Less distance ambiguity outside of Solar orbit, and better evidence of arm-like morphology ...
The Milky Way Galaxy
... • Surveys of Giant Molecular Clouds (GMCs) are likely to trace the spiral arms since these are sites of star formation • positions interior to Sun’s orbit in Galaxy have some distance ambiguity •Less distance ambiguity outside of Solar orbit, and better evidence of arm-like morphology ...
... • Surveys of Giant Molecular Clouds (GMCs) are likely to trace the spiral arms since these are sites of star formation • positions interior to Sun’s orbit in Galaxy have some distance ambiguity •Less distance ambiguity outside of Solar orbit, and better evidence of arm-like morphology ...
Triangulation Trigonometric Parallax
... – For stars of a given temperature, the larger the radius, the larger the luminosity – Therefore, as one moves up the H-R diagram, a star’s radius must become bigger – On the other hand, for a given luminosity, the larger the radius, the smaller the temperature – Therefore, as one moves right on the ...
... – For stars of a given temperature, the larger the radius, the larger the luminosity – Therefore, as one moves up the H-R diagram, a star’s radius must become bigger – On the other hand, for a given luminosity, the larger the radius, the smaller the temperature – Therefore, as one moves right on the ...
Study Guide Ch10,11 and 12
... 2. How is the mass of the Milky Way measured, and how does this lead to the concept of dark matter? 3. How are the spiral arms of the Milky Way detected, and what is their nature? 4. Discuss the reason for the differences between population I and population II stars. 5. Describe the characteristics ...
... 2. How is the mass of the Milky Way measured, and how does this lead to the concept of dark matter? 3. How are the spiral arms of the Milky Way detected, and what is their nature? 4. Discuss the reason for the differences between population I and population II stars. 5. Describe the characteristics ...
Document
... • Computer models provide a “fast-forward” look at the evolution of stars. • Stars begin as clouds of gas and dust, which collapse to form a stellar disk. This disk eventually becomes a star. • The star eventually runs out of nuclear fuel and dies. The manner of its death depends on its mass. ...
... • Computer models provide a “fast-forward” look at the evolution of stars. • Stars begin as clouds of gas and dust, which collapse to form a stellar disk. This disk eventually becomes a star. • The star eventually runs out of nuclear fuel and dies. The manner of its death depends on its mass. ...
Lecture 15
... Why do protostars rotate rather fast and end up surrounded by disks of material? A. The galaxy is rotating, so all the stars that form are rotating as well. B. If a cloud spins even a little bit, the spin increases as it contracts. C. The conservation of angular momentum causes this to occur. D. Al ...
... Why do protostars rotate rather fast and end up surrounded by disks of material? A. The galaxy is rotating, so all the stars that form are rotating as well. B. If a cloud spins even a little bit, the spin increases as it contracts. C. The conservation of angular momentum causes this to occur. D. Al ...
Planetarium Key Points
... The stars seem numberless and there are actually more than 2 billions of stars in the system we live in (Milky Way), but only 3000 stars are visible at naked eye What we see is NOT what it is actually, the response of our eye is logarithmic not linear All celestial objects seem at the same dis ...
... The stars seem numberless and there are actually more than 2 billions of stars in the system we live in (Milky Way), but only 3000 stars are visible at naked eye What we see is NOT what it is actually, the response of our eye is logarithmic not linear All celestial objects seem at the same dis ...
January 2016 - Newbury Astronomical Society
... Moon and planets appear to move across the sky. The constellations through which the ecliptic passes are known as the constellations of the ‘Zodiac’. Taurus is prominent in the south. The bright red star Aldebaran is located at the centre of Taurus. Up to the right is the Open Cluster M45 known as t ...
... Moon and planets appear to move across the sky. The constellations through which the ecliptic passes are known as the constellations of the ‘Zodiac’. Taurus is prominent in the south. The bright red star Aldebaran is located at the centre of Taurus. Up to the right is the Open Cluster M45 known as t ...
1. Introduction
... very many, stars pulsate in more complicated manners than the Cepheids. In many instances more than one mode of oscillation is excited simultaneously in a star; these modes may include both radial overtones, in addition to the fundamental, and nonradial modes, where the motion does not preserve sphe ...
... very many, stars pulsate in more complicated manners than the Cepheids. In many instances more than one mode of oscillation is excited simultaneously in a star; these modes may include both radial overtones, in addition to the fundamental, and nonradial modes, where the motion does not preserve sphe ...
Basic data of CoRoT-Exo-2b - tls
... TIFF (Uncompressed) decompressor are needed to see this picture. ...
... TIFF (Uncompressed) decompressor are needed to see this picture. ...
Measuring Motion, Doppler Effect—28 Oct Outline • Announcements
... – A single wavelength is seen on 1 Oct. – Two wavelengths are seen on 2 Oct – Separation of two wavelengths grows larger, then smaller. ...
... – A single wavelength is seen on 1 Oct. – Two wavelengths are seen on 2 Oct – Separation of two wavelengths grows larger, then smaller. ...
Stellar Structure - McMurry University
... The white dwarf can ignite the new matter and flare up as a nova. The white dwarf can accrete too much matter and detonate as a supernova type Ia. Either the white dwarf can ignite the new matter and flare up as a nova, or the white dwarf can accrete too much matter and detonate as a supernova type ...
... The white dwarf can ignite the new matter and flare up as a nova. The white dwarf can accrete too much matter and detonate as a supernova type Ia. Either the white dwarf can ignite the new matter and flare up as a nova, or the white dwarf can accrete too much matter and detonate as a supernova type ...
Solar and Lunar Eclipse, the Sky,_x000b_The Milky
... For example the Mansi believed that the Milky Way formed when God created a deer with six legs. Humans couldn’t catch the deer so they called upon the Forest Spirit for help. The Forest Spirit caught the deer and broke two of its legs so that humans could hunt it. The Milky Way represents the ski tr ...
... For example the Mansi believed that the Milky Way formed when God created a deer with six legs. Humans couldn’t catch the deer so they called upon the Forest Spirit for help. The Forest Spirit caught the deer and broke two of its legs so that humans could hunt it. The Milky Way represents the ski tr ...
AAVSO: Mu Cephei, October 2002 Variable Star Of The Month
... Mu Cep has expanded and cooled and is currently in its red supergiant phase of life. Like other red giants and supergiants, it is unstable and it pulsates. Right now the radial (in-and-out) pulsations are of a small-amplitude (about 1.67 mag), but eventually it will probably pulsate with a large-amp ...
... Mu Cep has expanded and cooled and is currently in its red supergiant phase of life. Like other red giants and supergiants, it is unstable and it pulsates. Right now the radial (in-and-out) pulsations are of a small-amplitude (about 1.67 mag), but eventually it will probably pulsate with a large-amp ...
1 Stars
... in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Cre ...
... in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Cre ...
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.