Earth in space
... expanding so that objects (galaxies) move away from one another The galaxies aren’t expanding…just the spaces between them ...
... expanding so that objects (galaxies) move away from one another The galaxies aren’t expanding…just the spaces between them ...
Photometric analysis of the globular cluster NGC5466
... bright blue stars are identified. Most of the open clusters lay in the Galactic disc and have a large quantity of interstellar medium. Globular clusters, instead, are characterized by a spherical shape, due to tight gravitational bounds. They present a high star density, which decreases as the dista ...
... bright blue stars are identified. Most of the open clusters lay in the Galactic disc and have a large quantity of interstellar medium. Globular clusters, instead, are characterized by a spherical shape, due to tight gravitational bounds. They present a high star density, which decreases as the dista ...
Our Star - the Sun
... Mass-Luminosity Relation for MainSequence Stars • Main sequence stars are stars like the Sun but with different masses • The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its lu ...
... Mass-Luminosity Relation for MainSequence Stars • Main sequence stars are stars like the Sun but with different masses • The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its lu ...
BrainPOP - The Science Spot
... pulls the clouds together causing clumps to form. If the clump is large enough, the __________ caused by gravity inside a ____________ begins to generate _________. 2. The heat and pressure builds until __________ __________ reactions begin to take place inside the core. Gravity pulls _____________ ...
... pulls the clouds together causing clumps to form. If the clump is large enough, the __________ caused by gravity inside a ____________ begins to generate _________. 2. The heat and pressure builds until __________ __________ reactions begin to take place inside the core. Gravity pulls _____________ ...
SECTION 30.2 Measuring the Stars 1. Constellations are a. the
... c. measuring the position of the visible star in the pair and noting shifts as it orbits the center of mass between it and the unseen companion star. d. examining the stars’ absorption spectra. 5. When estimating the distance of stars from Earth, astronomers use the fact that nearby stars shift in p ...
... c. measuring the position of the visible star in the pair and noting shifts as it orbits the center of mass between it and the unseen companion star. d. examining the stars’ absorption spectra. 5. When estimating the distance of stars from Earth, astronomers use the fact that nearby stars shift in p ...
Sample Midterm - IUPUI Physics
... c) have a main sequence that for some given B-V has a brighter apparent brightness d) have a main sequence that for some given B-V has a dimmer apparent brightness 16. A cluster of stars which is further away will: a) have a bluer turn off point b) have a redder turn off point c) have a main sequenc ...
... c) have a main sequence that for some given B-V has a brighter apparent brightness d) have a main sequence that for some given B-V has a dimmer apparent brightness 16. A cluster of stars which is further away will: a) have a bluer turn off point b) have a redder turn off point c) have a main sequenc ...
formation1
... • As the comet approaches the Sun it starts to grow a tail. Often times two distinct tails. One composed of gas molecules and one composed of dust. ...
... • As the comet approaches the Sun it starts to grow a tail. Often times two distinct tails. One composed of gas molecules and one composed of dust. ...
Unit 1: Earth History 1. Distinguish among eons
... 4. Explain the factors that determine if a planet will have a strong magnetic field/atmosphere? 5. Explain Kepler’s Laws. Calculate a planets period of rotation (using GRASS). 6. Compare and contr ...
... 4. Explain the factors that determine if a planet will have a strong magnetic field/atmosphere? 5. Explain Kepler’s Laws. Calculate a planets period of rotation (using GRASS). 6. Compare and contr ...
The Sun - Hicksville Public Schools
... outshine the entire galaxy, before fading from view over several weeks or months. During this short interval, a supernova can radiate as much energy as the Sun would emit over 10 billion years. The explosion expels much or all of a star's material at high velocity, driving a shock wave into the surr ...
... outshine the entire galaxy, before fading from view over several weeks or months. During this short interval, a supernova can radiate as much energy as the Sun would emit over 10 billion years. The explosion expels much or all of a star's material at high velocity, driving a shock wave into the surr ...
Introduction to Stars: Their Properties
... Define brightness (see text), apparent magnitude, absolute magnitude. ...
... Define brightness (see text), apparent magnitude, absolute magnitude. ...
Stars - PAMS-Doyle
... • The nearest galaxy to ours is called the "Sagittarius Dwarf" and it is about 60 000 light years away from our own galaxy (the Milky Way). Assuming we can get a vehicle to reach the speed of light, it would take 60 000 years for a vehicle to travel to this galaxy. • Given current technology, it is ...
... • The nearest galaxy to ours is called the "Sagittarius Dwarf" and it is about 60 000 light years away from our own galaxy (the Milky Way). Assuming we can get a vehicle to reach the speed of light, it would take 60 000 years for a vehicle to travel to this galaxy. • Given current technology, it is ...
First Ever STEREO Images of the Entire Sun NASA Deputy
... Majoris), continue nearly as far exactly straight onward, and there you are. M50 is magnitude 5.9, quite a bit fainter than M41's magnitude 4.5. In the same field with M50 is another, the fainter cluster: NGC 2343, a tougher catch at magnitude 6.7. · Before the start of dawn Wednesday morning, the a ...
... Majoris), continue nearly as far exactly straight onward, and there you are. M50 is magnitude 5.9, quite a bit fainter than M41's magnitude 4.5. In the same field with M50 is another, the fainter cluster: NGC 2343, a tougher catch at magnitude 6.7. · Before the start of dawn Wednesday morning, the a ...
Images from the Las Cumbres Observatory Global Telescope
... sequence dwarf. The star has an 11th mag. companion (B) and the brighter star in the system is suspected to be a very close binary itself, consisting of two stars separated by 0.1 arc-seconds. Acubens belongs to the spectral class A5m and has a luminosity of 23 times the Sun. Al Tarf – β Cancri (Bet ...
... sequence dwarf. The star has an 11th mag. companion (B) and the brighter star in the system is suspected to be a very close binary itself, consisting of two stars separated by 0.1 arc-seconds. Acubens belongs to the spectral class A5m and has a luminosity of 23 times the Sun. Al Tarf – β Cancri (Bet ...
The Family of Stars
... more luminous than star A, so star B must be further away. The flux received from both stars is the same, but star B is 100 times more luminous than star A, so star B must be further away. Both stars are equally luminous, but the flux received from star A is 5 times less than from star B, so star A ...
... more luminous than star A, so star B must be further away. The flux received from both stars is the same, but star B is 100 times more luminous than star A, so star B must be further away. Both stars are equally luminous, but the flux received from star A is 5 times less than from star B, so star A ...
20 pm - Starmap
... A compact globular cluster near the center of the Milky Way. Bright. Easy to find near ε-scorpii. ...
... A compact globular cluster near the center of the Milky Way. Bright. Easy to find near ε-scorpii. ...
Astronomy Unit Period
... d. age _________________________12. Astronomers use numbers to describe a star’s brightness. The larger the number, the ___ the star. _________________________ 13. How bright a star appears as seen from Earth is called ___ . _________________________ 14. How bright a star actually is at a distance o ...
... d. age _________________________12. Astronomers use numbers to describe a star’s brightness. The larger the number, the ___ the star. _________________________ 13. How bright a star appears as seen from Earth is called ___ . _________________________ 14. How bright a star actually is at a distance o ...
Lecture 19 The Milky Way Galaxy
... of stars: published the ‘Grindstone model’ – the Sun at the center of An irregularly shaped disc of stars ...
... of stars: published the ‘Grindstone model’ – the Sun at the center of An irregularly shaped disc of stars ...
Astrophysics 11 - HR Diagram
... • These stars are called white dwarfs and lie in the bottom right hand corner of the HR diagram. • White dwarfs are stars at the end of their lives, where all of their fusion reactions have stopped and are they are just cooling down. ...
... • These stars are called white dwarfs and lie in the bottom right hand corner of the HR diagram. • White dwarfs are stars at the end of their lives, where all of their fusion reactions have stopped and are they are just cooling down. ...
Naked Eye, Binocular, or Small Backyard Telescope Night Sky
... the Big Dipper (Ursa Major), which can be resolvable by eye in dark sights if you have very good eye sight, but they are certainly resolvable with binoculars. When pointing a telescope at ...
... the Big Dipper (Ursa Major), which can be resolvable by eye in dark sights if you have very good eye sight, but they are certainly resolvable with binoculars. When pointing a telescope at ...
Exercise 4
... (b) C > D > E > A > B (Largest m to smallest m, i.e. dimmest to brightest, i.e. least luminous to most luminous since the objects are at the same distance from the Earth) (c) B > A > E > D > C (Using m–M = 5 log d/10, the largest m-M corresponds the farthest star) ...
... (b) C > D > E > A > B (Largest m to smallest m, i.e. dimmest to brightest, i.e. least luminous to most luminous since the objects are at the same distance from the Earth) (c) B > A > E > D > C (Using m–M = 5 log d/10, the largest m-M corresponds the farthest star) ...
Here - Thanet Astronomy Group
... Thanet Astronomy Group Astronomy for Everyone in Plain English What to See, February 2014 ...
... Thanet Astronomy Group Astronomy for Everyone in Plain English What to See, February 2014 ...
ppt
... was embedded in enormous shell of stars… Emmanuel Kant (1755) suggested instead that the MW is a giant disk of stars. Kant also hypothesized that space was full of other, similar disks of stars (island universes). ...
... was embedded in enormous shell of stars… Emmanuel Kant (1755) suggested instead that the MW is a giant disk of stars. Kant also hypothesized that space was full of other, similar disks of stars (island universes). ...
c - Fsusd
... 18) A star’s absolute brightness is its brightness as seen from Earth. a) True b) False ...
... 18) A star’s absolute brightness is its brightness as seen from Earth. a) True b) False ...
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.