1 pracovni list HR diagram I EN
... 5 Construction of H–R diagram for distant stars Use the same procedure from exercise 4 to construct a H–R diagram for distant stars at distances from 100 pc to 400 pc. To obtain data from the HIPPARCOS Catalogue of Stars decide on the correct value of the parallax (Plx). Use the same scale of axes ...
... 5 Construction of H–R diagram for distant stars Use the same procedure from exercise 4 to construct a H–R diagram for distant stars at distances from 100 pc to 400 pc. To obtain data from the HIPPARCOS Catalogue of Stars decide on the correct value of the parallax (Plx). Use the same scale of axes ...
The Interstellar Medium and Star Formation
... pebbles, then rocks, then boulders, then planetesimals, then planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We ...
... pebbles, then rocks, then boulders, then planetesimals, then planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We ...
Stars: Their Life and Afterlife
... the rotation of the galactic spiral arms, or by more local events like compression of gas by a nearby supernova remnant or the collision of two clouds. Figure 2 shows a schematic view of a Giant Molecular Cloud, and how it can evolve while stars are forming within it. The cloud typically begins (Fig ...
... the rotation of the galactic spiral arms, or by more local events like compression of gas by a nearby supernova remnant or the collision of two clouds. Figure 2 shows a schematic view of a Giant Molecular Cloud, and how it can evolve while stars are forming within it. The cloud typically begins (Fig ...
September 3 and 5 slides
... reasons: (1) measurements of proper motions in M101 (Adrian von Maanen) lead to ludicrous rotation speeds if M101 were as big as the Milky Way; (2) comparison of brightness of SAndromedae in M31 with Nova Persei in the Milky Way ...
... reasons: (1) measurements of proper motions in M101 (Adrian von Maanen) lead to ludicrous rotation speeds if M101 were as big as the Milky Way; (2) comparison of brightness of SAndromedae in M31 with Nova Persei in the Milky Way ...
monkeyball_lifecycleofastar
... This is the stage when a red giant stops fusing helium and pushes the outer layers of itself outward a shown in the picture. When this happens all that is left is a solid dense core. At this point all life on earth would http://en.wikipedia.org/wik ...
... This is the stage when a red giant stops fusing helium and pushes the outer layers of itself outward a shown in the picture. When this happens all that is left is a solid dense core. At this point all life on earth would http://en.wikipedia.org/wik ...
Supernovae – the biggest bangs since the Big Bang
... If you know the apparent brightness of a star and you know the intrinsic brightness of the star, you can determine how far away the star is. During the 1990's two groups of astronomers endeavored to discover Type Ia supernovae as far away as possible. They found some objects so far away that their ...
... If you know the apparent brightness of a star and you know the intrinsic brightness of the star, you can determine how far away the star is. During the 1990's two groups of astronomers endeavored to discover Type Ia supernovae as far away as possible. They found some objects so far away that their ...
Part 2 - Aryabhat
... All stars shine but none do it like Sirius, the brightest star in the night sky. Aptly named, Sirius comes from the Greek word Seirius, meaning, "searing" or "scorching." Blazing at a visual magnitude of –1.42, it is twice as bright as any other star in our sky. Sirius resides in the constellation C ...
... All stars shine but none do it like Sirius, the brightest star in the night sky. Aptly named, Sirius comes from the Greek word Seirius, meaning, "searing" or "scorching." Blazing at a visual magnitude of –1.42, it is twice as bright as any other star in our sky. Sirius resides in the constellation C ...
Chapter 30 Notes
... All stars have dark line spectra. Dark line spectra- bands of color crossed by dark lines where the color is diminished or reduced The dark line spectrum tells us the star’s composition and temperature. Different elements have different spectrums. So depending on a star’s composition its spectrum wi ...
... All stars have dark line spectra. Dark line spectra- bands of color crossed by dark lines where the color is diminished or reduced The dark line spectrum tells us the star’s composition and temperature. Different elements have different spectrums. So depending on a star’s composition its spectrum wi ...
HW #02 Solutions
... solved below – you just have to look for them. Review Questions 1. Describe the procedure used to find distances to the nearby stars. The distance to the nearby stars is determined using stellar (trigonometric) parallax. The procedure is to take two pictures of the star 6 months apart, so the Earth ...
... solved below – you just have to look for them. Review Questions 1. Describe the procedure used to find distances to the nearby stars. The distance to the nearby stars is determined using stellar (trigonometric) parallax. The procedure is to take two pictures of the star 6 months apart, so the Earth ...
Option E Sum Pages
... The intensity values of starlight are extremely small and historically the intensity of stars was first described, based on mere visual observations, by dividing stars into a magnitude of class 1 (the brightest), magnitude 2 (not so bright) etc to magnitude 6 (just barely visible for the naked eye). ...
... The intensity values of starlight are extremely small and historically the intensity of stars was first described, based on mere visual observations, by dividing stars into a magnitude of class 1 (the brightest), magnitude 2 (not so bright) etc to magnitude 6 (just barely visible for the naked eye). ...
Stars
... 1. Begin their lives as clouds of dust and gas called nebulae 2. Gravity may cause the nebula to contract 3. Matter in the gas cloud will begin to condense into a dense region called a protostar 4. Protostar continues to condense, it heats up ...
... 1. Begin their lives as clouds of dust and gas called nebulae 2. Gravity may cause the nebula to contract 3. Matter in the gas cloud will begin to condense into a dense region called a protostar 4. Protostar continues to condense, it heats up ...
Star Life Cycle – Web Activity
... 32. Close the small box. Stars that are 10 to 20 solar masses go beyond burning hydrogen and helium and burn ________________. 33. When carbon burning is complete, a core can ultimately form __________ at its core. 34. Describe IN DETAIL the process that creates a neutron star. ...
... 32. Close the small box. Stars that are 10 to 20 solar masses go beyond burning hydrogen and helium and burn ________________. 33. When carbon burning is complete, a core can ultimately form __________ at its core. 34. Describe IN DETAIL the process that creates a neutron star. ...
Volcanoes and Igneous Activity Earth - Chapter 4
... Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients o ...
... Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients o ...
Ch. 19 (Starbirth)
... line, because stars of the same mass can have different compositions. Most important: Stars do not move along the main sequence! Once they reach it, they are in equilibrium, and do not move until their fuel begins to run out. ...
... line, because stars of the same mass can have different compositions. Most important: Stars do not move along the main sequence! Once they reach it, they are in equilibrium, and do not move until their fuel begins to run out. ...
Stefan-Boltzmann`s law Wien`s law
... Binary star is a stellar system consisting of two stars orbiting around their common center of mass. The ONLY way to find mass of the stars is when they are the part of binary stars. Knowing the period of the binary and the separation of the stars the total mass of the binary system can be calculate ...
... Binary star is a stellar system consisting of two stars orbiting around their common center of mass. The ONLY way to find mass of the stars is when they are the part of binary stars. Knowing the period of the binary and the separation of the stars the total mass of the binary system can be calculate ...
Luminosity Classes
... will be (because it has more surface area). Luminosity and the thickness of the absorption lines are combined to group stars into Lumniosity Classes. Luminosity Classes are combined with spectral class to describe Stars. The Sun is Class V so … The Sun is a “G2 V” star. ...
... will be (because it has more surface area). Luminosity and the thickness of the absorption lines are combined to group stars into Lumniosity Classes. Luminosity Classes are combined with spectral class to describe Stars. The Sun is Class V so … The Sun is a “G2 V” star. ...
Proficiency Step #5--
... dividing up the sky into “sectors” made things more manageable and easier to remember. The earliest references to the constellations were from the Middle-eastern Sky Myths of the 8th century BC, but the most complete early references can be found in the writings of the ancient Greek astronomer Erato ...
... dividing up the sky into “sectors” made things more manageable and easier to remember. The earliest references to the constellations were from the Middle-eastern Sky Myths of the 8th century BC, but the most complete early references can be found in the writings of the ancient Greek astronomer Erato ...
Distance, Size, and Temperature of a Star
... Because blue stars are large, and compact, they burn their fuel quickly, which gives them a very high temperature. These stars often run out of fuel in only 10,000 - 100,000 years. A blue giant is very bright. Like a lighthouse, they shine across a great distance. Even though blue giant stars are ra ...
... Because blue stars are large, and compact, they burn their fuel quickly, which gives them a very high temperature. These stars often run out of fuel in only 10,000 - 100,000 years. A blue giant is very bright. Like a lighthouse, they shine across a great distance. Even though blue giant stars are ra ...
EX - Uplift North Hills Prep
... (b) As the luminosity of the star is the energy used per second, stars with greater luminosity are at higher temperatures and will use up their fuel in shorter periods of time. The luminosity of a star is related to its mass by the relationship L ∝ M 3.5 . Therefore, increasing the mass raises the l ...
... (b) As the luminosity of the star is the energy used per second, stars with greater luminosity are at higher temperatures and will use up their fuel in shorter periods of time. The luminosity of a star is related to its mass by the relationship L ∝ M 3.5 . Therefore, increasing the mass raises the l ...
chapter 2
... In order to identify the stars in a constellation, Greek alphabetical letters have been used. The Greek alphabet is as follows. Eta Nu Tau Alpha Beta ...
... In order to identify the stars in a constellation, Greek alphabetical letters have been used. The Greek alphabet is as follows. Eta Nu Tau Alpha Beta ...
Stars and Galaxies
... • Prominences – solar storm, seen as huge bright arches/loops of gas • Solar Flares – solar storm, bright bursts of light on sun’s surface – Lasts less than 1 hour ...
... • Prominences – solar storm, seen as huge bright arches/loops of gas • Solar Flares – solar storm, bright bursts of light on sun’s surface – Lasts less than 1 hour ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.