REGIONAL exam 2013
... 5. Each question is worth one point. Tiebreaker questions are indicated with a (T#) in which the number indicates the order of consultation in the event of a tie. Tiebreaker questions count toward the overall raw score, and are only used as tiebreakers when there is a tie. In such cases, (T1) will b ...
... 5. Each question is worth one point. Tiebreaker questions are indicated with a (T#) in which the number indicates the order of consultation in the event of a tie. Tiebreaker questions count toward the overall raw score, and are only used as tiebreakers when there is a tie. In such cases, (T1) will b ...
Powerpoint
... Also, squeezing of clouds initiates collapse within them => star formation. Bright young massive stars live and die in spiral arms. Emission nebulae mostly in spiral arms. So arms always contain same types of objects, but individual objects come and go. ...
... Also, squeezing of clouds initiates collapse within them => star formation. Bright young massive stars live and die in spiral arms. Emission nebulae mostly in spiral arms. So arms always contain same types of objects, but individual objects come and go. ...
VLT/FORS Surveys of Wolf-Rayet Stars beyond the
... The Initial Mass Function favours the formation of low- and intermediate-mass stars with respect to high-mass stars, for which the boundary is conventionally set at 8 M A – the division between stars ultimately forming a CO white dwarf or an iron core, the latter subsequently undergoing a core-colla ...
... The Initial Mass Function favours the formation of low- and intermediate-mass stars with respect to high-mass stars, for which the boundary is conventionally set at 8 M A – the division between stars ultimately forming a CO white dwarf or an iron core, the latter subsequently undergoing a core-colla ...
Astronomy (C) - North Carolina Science Olympiad
... galaxy of Milky Way As with 47 Tucanae, more than one population of stars visible Suggests that many globular clusters have rich history of interaction with galaxies & molecular clouds ...
... galaxy of Milky Way As with 47 Tucanae, more than one population of stars visible Suggests that many globular clusters have rich history of interaction with galaxies & molecular clouds ...
What we can measure
... and watch one orbit the other. These are called visual binaries. We need to be careful here, since some stars only appear to be close due to our perspective. These are called “optical doubles” and not real binary systems at all. We can tell the difference by watching these over time or by noting tha ...
... and watch one orbit the other. These are called visual binaries. We need to be careful here, since some stars only appear to be close due to our perspective. These are called “optical doubles” and not real binary systems at all. We can tell the difference by watching these over time or by noting tha ...
Red Giants - Faculty Web Pages
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
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.) ...
Beyond the Solar System By Patti Hutchison ANSWER THE
... the Milky Way, our galaxy. But wait, there's something even bigger than that- the universe! There are billions of galaxies in space. A galaxy is a group of stars, gas, and dust that are bound together by gravity. If you look into the sky on a dark night, you can see our galaxy, the Milky Way. It is ...
... the Milky Way, our galaxy. But wait, there's something even bigger than that- the universe! There are billions of galaxies in space. A galaxy is a group of stars, gas, and dust that are bound together by gravity. If you look into the sky on a dark night, you can see our galaxy, the Milky Way. It is ...
Stars, Galaxies, and the Universe Section 1 Section 1
... • Stars vary in size and mass. • Stars such as the sun are considered medium-sized stars. The sun has a diameter of 1,390,000 km. • Most of the stars you can see in the night sky are medium-sized stars. • Many stars also have about the same mass as the sun, however some stars may be more or less mas ...
... • Stars vary in size and mass. • Stars such as the sun are considered medium-sized stars. The sun has a diameter of 1,390,000 km. • Most of the stars you can see in the night sky are medium-sized stars. • Many stars also have about the same mass as the sun, however some stars may be more or less mas ...
Elliptical Galaxies
... •normal ellipticals can contain from 1 to 100 billion stars. •giant elliptical galaxies are found at the center of dense clusters of galaxies. •a giant elliptical galaxy may have 100 times as many stars as the biggest normal galaxies •Giant elliptical galaxies have grown and continue to grow by grav ...
... •normal ellipticals can contain from 1 to 100 billion stars. •giant elliptical galaxies are found at the center of dense clusters of galaxies. •a giant elliptical galaxy may have 100 times as many stars as the biggest normal galaxies •Giant elliptical galaxies have grown and continue to grow by grav ...
Hubble Space Telescope Image
... The Universe is filled with these star systems which themselves cluster together into larger systems. Earth & Space Science March 2015 ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. Earth & Space Science March 2015 ...
File
... (arms), usually a central bulge + dust are present as well. SB = barred-spiral galaxies -- are similar to spirals, but with the presence of a bar in the central regions. E = elliptical galaxies -- galaxies with smooth light distributions, biaxial profiles. Round to oval in shape. Irr = irregular gal ...
... (arms), usually a central bulge + dust are present as well. SB = barred-spiral galaxies -- are similar to spirals, but with the presence of a bar in the central regions. E = elliptical galaxies -- galaxies with smooth light distributions, biaxial profiles. Round to oval in shape. Irr = irregular gal ...
preliminary version - University of Exeter
... IC 348 we took data on 15 consecutive nights, and repeated the observations many times within a single night. By contrast, the survey of Cohen et al. 2004[2] has much lower temporal density, and many nights can elapse between observations. Because CTTs are erratically variable with time-scales of or ...
... IC 348 we took data on 15 consecutive nights, and repeated the observations many times within a single night. By contrast, the survey of Cohen et al. 2004[2] has much lower temporal density, and many nights can elapse between observations. Because CTTs are erratically variable with time-scales of or ...
The resolved stellar populations of M32 Monachesi, Antonela
... outer space through its stellar atmosphere. This radiation provides detailed information about the intrinsic properties of the emitting star. Stars are then classified according to the wavelength at which the radiation peaks, which also indicates their surface temperatures. On the other side, the ma ...
... outer space through its stellar atmosphere. This radiation provides detailed information about the intrinsic properties of the emitting star. Stars are then classified according to the wavelength at which the radiation peaks, which also indicates their surface temperatures. On the other side, the ma ...
S T A R S
... The twelve constellations in the Zodiac are Taurus, Aries, Pisces, Aquarius, Capricornus, Sagittarius, Scorpio, Libra, Virgo, Leo, Cancer and Gemini. Taurus ...
... The twelve constellations in the Zodiac are Taurus, Aries, Pisces, Aquarius, Capricornus, Sagittarius, Scorpio, Libra, Virgo, Leo, Cancer and Gemini. Taurus ...
Galaxies
... a) Cepheid Method: Using Period – Luminosity relation for Cepheid variables b) Type Ia Supernovae (collapse of an accreting white dwarf in a binary system): Type Ia Supernova have well known standard luminosity → Compare to apparent magnitude → Find its distance Both are “Standard-candle” methods: K ...
... a) Cepheid Method: Using Period – Luminosity relation for Cepheid variables b) Type Ia Supernovae (collapse of an accreting white dwarf in a binary system): Type Ia Supernova have well known standard luminosity → Compare to apparent magnitude → Find its distance Both are “Standard-candle” methods: K ...
PH607lec12
... One particular star, known as S2, orbits the Milky Way's centre so fast that it completed one full revolution within the 16-year period. Observing one complete orbit of S2 has been a crucial contribution to the high accuracy reached and to understanding this region. The scenarios invoked to explain ...
... One particular star, known as S2, orbits the Milky Way's centre so fast that it completed one full revolution within the 16-year period. Observing one complete orbit of S2 has been a crucial contribution to the high accuracy reached and to understanding this region. The scenarios invoked to explain ...
AST1100 Lecture Notes
... How do we measure the distance to distant objects in the universe? There are several methods available, most of which suffer from large uncertainties. Particularly the methods to measure the largest distances are often based on assumptions which have not been properly verified. Fortunately, we do ha ...
... How do we measure the distance to distant objects in the universe? There are several methods available, most of which suffer from large uncertainties. Particularly the methods to measure the largest distances are often based on assumptions which have not been properly verified. Fortunately, we do ha ...
Stars: Their Life and Afterlife
... showing the relationship between a star’s luminosity (Y-axis, using the visual magnitude scale) and its temperature or color (X-axis, using the spectral class scale). The first feature to notice in the HR diagram is how the stars form a stripe that goes from the lower-right towards the upper-left: t ...
... showing the relationship between a star’s luminosity (Y-axis, using the visual magnitude scale) and its temperature or color (X-axis, using the spectral class scale). The first feature to notice in the HR diagram is how the stars form a stripe that goes from the lower-right towards the upper-left: t ...
AST1100 Lecture Notes
... How do we measure the distance to distant objects in the universe? There are several methods available, most of which suffer from large uncertainties. Particularly the methods to measure the largest distances are often based on assumptions which have not been properly verified. Fortunately, we do ha ...
... How do we measure the distance to distant objects in the universe? There are several methods available, most of which suffer from large uncertainties. Particularly the methods to measure the largest distances are often based on assumptions which have not been properly verified. Fortunately, we do ha ...
DTU 8e Chap 11 Characterizing Stars
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. Th ...
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. Th ...
ASTR3007/4007/6007, Class 1: Observing the Stars 23 February
... as well as absorption lines. Emission lines are like absorption lines in reverse: they are upward spikes in the spectrum, where there is much more light at a given frequency than you would get from a blackbody. Emission lines appear when there is an excess of a certain species of atoms and molecules ...
... as well as absorption lines. Emission lines are like absorption lines in reverse: they are upward spikes in the spectrum, where there is much more light at a given frequency than you would get from a blackbody. Emission lines appear when there is an excess of a certain species of atoms and molecules ...
Lecture 4: Telescopes
... Light Gathering Power - proportional to the square of the size of the mirror (area of the light bucket) Limiting magnitude for a telescope is m = 2.7 + 5 log D Where D is telescope aperture in millimeters. Resolving Power - Smallest angular separation that the telescope can resolve 4.56 / diameter o ...
... Light Gathering Power - proportional to the square of the size of the mirror (area of the light bucket) Limiting magnitude for a telescope is m = 2.7 + 5 log D Where D is telescope aperture in millimeters. Resolving Power - Smallest angular separation that the telescope can resolve 4.56 / diameter o ...
Lesson 1 - The DK Foundation
... The challenge that all astrologers now face arises from the shift in the polar axis in 2012 that will make all our astrological tables inaccurate. Of course, that shift will have many other effects, but they are not our concern here, other than to acknowledge that the circumstances that will accompa ...
... The challenge that all astrologers now face arises from the shift in the polar axis in 2012 that will make all our astrological tables inaccurate. Of course, that shift will have many other effects, but they are not our concern here, other than to acknowledge that the circumstances that will accompa ...
Aries (constellation)
Aries is one of the constellations of the zodiac. It is located in the northern celestial hemisphere between Pisces to the west and Taurus to the east. The name Aries is Latin for ram, and its symbol is 20px (Unicode ♈), representing a ram's horns. It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation, ranking 39th overall size, with an area of 441 square degrees (1.1% of the celestial sphere).Although Aries came to represent specifically the ram whose fleece became the Golden Fleece of Ancient Greek mythology, it has represented a ram since late Babylonian times. Before that, the stars of Aries formed a farmhand. Different cultures have incorporated the stars of Aries into different constellations including twin inspectors in China and a porpoise in the Marshall Islands. Aries is a relatively dim constellation, possessing only four bright stars: Hamal (Alpha Arietis, second magnitude), Sheratan (Beta Arietis, third magnitude), Mesarthim (Gamma Arietis, fourth magnitude), and 41 Arietis (also fourth magnitude). The few deep-sky objects within the constellation are quite faint and include several pairs of interacting galaxies. Several meteor showers appear to radiate from Aries, including the Daytime Arietids and the Epsilon Arietids.