Astronomy Report Southern Cross Authors Maria Constanza Pavez
... and 2.1 it is situated in 21st place in a ranking of all the stars ordered by magnitude. These stars of a white-bluish colour, are located at a distance of approximately 296 light years and its temperature is between 10.000 and 30.000 degrees Celsius. The luminosity of these stars in relation to our ...
... and 2.1 it is situated in 21st place in a ranking of all the stars ordered by magnitude. These stars of a white-bluish colour, are located at a distance of approximately 296 light years and its temperature is between 10.000 and 30.000 degrees Celsius. The luminosity of these stars in relation to our ...
ASTR3007/4007/6007, Class 1: Observing the Stars 23 February
... corresponds to getting redder, and moving left corresponds to getting bluer. The value of J − K is our proxy for temperature. The first thing to notice about the diagram is that the stars do not fall anything like randomly on it. The great majority of them fall along a single fat line from bright an ...
... corresponds to getting redder, and moving left corresponds to getting bluer. The value of J − K is our proxy for temperature. The first thing to notice about the diagram is that the stars do not fall anything like randomly on it. The great majority of them fall along a single fat line from bright an ...
Stars and Their Characteristics
... though it is not nearly as hot. When a temperature of about 27,000,000°F is reached, nuclear fusion begins. This is the nuclear reaction in which hydrogen atoms are converted to helium atoms plus energy. This energy (radiation) production prevents further contraction of the star. The protostar i ...
... though it is not nearly as hot. When a temperature of about 27,000,000°F is reached, nuclear fusion begins. This is the nuclear reaction in which hydrogen atoms are converted to helium atoms plus energy. This energy (radiation) production prevents further contraction of the star. The protostar i ...
Hertzsprung-Russell Diagrams
... The Hertzsprung -Russell (H-R) Diagram is a graph that plots stars color (spectral type or surface temperature) vs. its luminosity (intrinsic brightness or absolute magnitude). On it, astronomers plot stars' color, temperature, luminosity, spectral type, and evolutionary stage. There are 3 very diff ...
... The Hertzsprung -Russell (H-R) Diagram is a graph that plots stars color (spectral type or surface temperature) vs. its luminosity (intrinsic brightness or absolute magnitude). On it, astronomers plot stars' color, temperature, luminosity, spectral type, and evolutionary stage. There are 3 very diff ...
Making Visual Estimates
... Telescope Simulator Example Select slides from the Telescope Simulator presentation found on the AAVSO website and created by Chuck Pullen ...
... Telescope Simulator Example Select slides from the Telescope Simulator presentation found on the AAVSO website and created by Chuck Pullen ...
Constellations, Looking Far Away, and Stars/Stellar Evolution
... Read aloud. The graph of how the temperatures and luminosities of stars are related is known as the Hertzsprung-Russell or H-R diagram. From this graph, we can also get an estimate of the size of a star, its radius. Astronomers worked with this graph long before they knew why stars varied in this wa ...
... Read aloud. The graph of how the temperatures and luminosities of stars are related is known as the Hertzsprung-Russell or H-R diagram. From this graph, we can also get an estimate of the size of a star, its radius. Astronomers worked with this graph long before they knew why stars varied in this wa ...
Triangulation Trigonometric Parallax
... • A spectrum also can reveal a star’s composition, temperature, luminosity, velocity in space, rotation speed, and other properties • On certain occasions, it may reveal mass and ...
... • A spectrum also can reveal a star’s composition, temperature, luminosity, velocity in space, rotation speed, and other properties • On certain occasions, it may reveal mass and ...
description
... Sometimes when you look up at the night sky, it can be very intimidating trying to make out anything except a whole bunch of scattered stars. Hopefully, this next activity will give you a better idea of which direction to start looking and help you map out the night sky. So when someone asks you whe ...
... Sometimes when you look up at the night sky, it can be very intimidating trying to make out anything except a whole bunch of scattered stars. Hopefully, this next activity will give you a better idea of which direction to start looking and help you map out the night sky. So when someone asks you whe ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... the greatest discovery in the history of astronomy since Galileo first turned a telescope to the heavens. The galaxies, previously believed to float serenely in the void, are in fact hurtling apart at an incredible speed: the universe is expanding. This stunning discovery was the culmination of a de ...
... the greatest discovery in the history of astronomy since Galileo first turned a telescope to the heavens. The galaxies, previously believed to float serenely in the void, are in fact hurtling apart at an incredible speed: the universe is expanding. This stunning discovery was the culmination of a de ...
Chapter 12
... • A spectrum also can reveal a star’s composition, temperature, luminosity, velocity in space, rotation speed, and other properties • On certain occasions, it may reveal mass and ...
... • A spectrum also can reveal a star’s composition, temperature, luminosity, velocity in space, rotation speed, and other properties • On certain occasions, it may reveal mass and ...
S T A R S
... Another scattered band exists in an inclined elliptical orbit and extends out to about 200AU. These are more than another asteroid belt as is between Mars and Jupiter. EKOs have a combined mass in the order of 300 times the total mass of all asteroids. They have a very diverse range of colours, surf ...
... Another scattered band exists in an inclined elliptical orbit and extends out to about 200AU. These are more than another asteroid belt as is between Mars and Jupiter. EKOs have a combined mass in the order of 300 times the total mass of all asteroids. They have a very diverse range of colours, surf ...
1. This question is about some of the properties of Barnard`s star
... Deduce that the distance of Barnard’s star from the Sun is 5.94 ly. ...
... Deduce that the distance of Barnard’s star from the Sun is 5.94 ly. ...
The Milky Way - University of North Texas
... b. Objects below this mass can only form in HI clouds. c. Objects below this mass are not hot enough to fuse normal hydrogen. d. They form too slowly and hot stars nearby clear the gas and dust quickly. e. Our telescopes do not have enough light gathering power to detect dim objects. ...
... b. Objects below this mass can only form in HI clouds. c. Objects below this mass are not hot enough to fuse normal hydrogen. d. They form too slowly and hot stars nearby clear the gas and dust quickly. e. Our telescopes do not have enough light gathering power to detect dim objects. ...
Galaxies - Indiana University Astronomy
... Using the same website as above, click on “spectrum” for the two galaxies whose distances you measured. The optical spectrum of the galaxy is shown at the top of the spectrum page. Shown are many different spectral features, including absorption lines and emission lines, superimposed on continuum em ...
... Using the same website as above, click on “spectrum” for the two galaxies whose distances you measured. The optical spectrum of the galaxy is shown at the top of the spectrum page. Shown are many different spectral features, including absorption lines and emission lines, superimposed on continuum em ...
10 New Constellations
... night sky for a couple of weeks. Mirfak Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a th ...
... night sky for a couple of weeks. Mirfak Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a th ...
Lecture 3
... Hydrogen lines in the visible part of the spectrum (known as the Balmer Series) are created when a photon is absorbed by bouncing an electron from the 1st excited level to a higher excited level. • Photons with just the right energy to move an electron from the 1st excited state to the 2nd excited s ...
... Hydrogen lines in the visible part of the spectrum (known as the Balmer Series) are created when a photon is absorbed by bouncing an electron from the 1st excited level to a higher excited level. • Photons with just the right energy to move an electron from the 1st excited state to the 2nd excited s ...
Understanding the H-R Diagram
... Most stars fall into the Main Sequence range, including our sun. They are stable and remain at this stage for about 5 billion years. However, when stars begin to die they become giants and supergiants and they have used up their supply of hydrogen used in the process of nuclear fusion. The core of t ...
... Most stars fall into the Main Sequence range, including our sun. They are stable and remain at this stage for about 5 billion years. However, when stars begin to die they become giants and supergiants and they have used up their supply of hydrogen used in the process of nuclear fusion. The core of t ...
Unit 3 - Lesson 8.9 Life of Stars Challenge
... These coloured Super Giants have luminosities often 1,000,000X greater than the Sun The explosive death of a star A cloud of hydrogen gas and dust in space. When the gravitational and pressure forces within the initial cloud become unbalanced, the cloud collapses and breaks into small fragments. The ...
... These coloured Super Giants have luminosities often 1,000,000X greater than the Sun The explosive death of a star A cloud of hydrogen gas and dust in space. When the gravitational and pressure forces within the initial cloud become unbalanced, the cloud collapses and breaks into small fragments. The ...
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 ...
Stars change over their life cycles.
... Betelgeuse (BEET-uhl-JOOZ) is more than 600 times greater in diameter than the Sun. If Betelgeuse replaced the Sun, it would fill space in our solar system well beyond Earth’s orbit. Because giant and supergiant stars have such huge surface areas to give off light, they are very bright. Betelgeuse i ...
... Betelgeuse (BEET-uhl-JOOZ) is more than 600 times greater in diameter than the Sun. If Betelgeuse replaced the Sun, it would fill space in our solar system well beyond Earth’s orbit. Because giant and supergiant stars have such huge surface areas to give off light, they are very bright. Betelgeuse i ...
Constellation ARA
... Arae. Its estimated age is 3 million years, has a visual magnitude of 5.2, is 15' in diameter, and lies approximately 4,300 light years from Earth. The two hottest stars in the cluster are responsible for the illumination of NGC 6188, an emission nebula also located in Ara constellation. NGC 6379 is ...
... Arae. Its estimated age is 3 million years, has a visual magnitude of 5.2, is 15' in diameter, and lies approximately 4,300 light years from Earth. The two hottest stars in the cluster are responsible for the illumination of NGC 6188, an emission nebula also located in Ara constellation. NGC 6379 is ...
stars and beyond - Math/Science Nucleus
... A galaxy is a large scale aggregate of stars, plus some gas, dust, and possibly solar systems, which are held together by gravity. A globular cluster is a roughly spherical group of hundreds of thousands to millions stars, also held together by gravity. Globular clusters seem to be made of very old ...
... A galaxy is a large scale aggregate of stars, plus some gas, dust, and possibly solar systems, which are held together by gravity. A globular cluster is a roughly spherical group of hundreds of thousands to millions stars, also held together by gravity. Globular clusters seem to be made of very old ...