HR Diagram and Stellar Fusion
... How it all works • It gets bigger to increase its surface area and like a car radiator, that extra surface area is able to disperse the extra heat out into space. • It is now also a redder star because with that extra surface area, it becomes really quite good at getting rid of heat and while its c ...
... How it all works • It gets bigger to increase its surface area and like a car radiator, that extra surface area is able to disperse the extra heat out into space. • It is now also a redder star because with that extra surface area, it becomes really quite good at getting rid of heat and while its c ...
Crux The Southern Cross
... telescope appear as two dots. It is common for two stars to be locked together gravitationally to form a binary star system. Sometimes double stars may only appear close together from our vantage point on earth. If in reality they do not interact then we call this an optical double. It is possible, ...
... telescope appear as two dots. It is common for two stars to be locked together gravitationally to form a binary star system. Sometimes double stars may only appear close together from our vantage point on earth. If in reality they do not interact then we call this an optical double. It is possible, ...
Chapter 15 part 1
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
Powerpoint
... • Apparent brightness is as observed from Earth; depends on distance and absolute luminosity. ...
... • Apparent brightness is as observed from Earth; depends on distance and absolute luminosity. ...
Rotation in the ZAMS: Be and Bn stars
... rotating B stars that still had not attained the required properties to become fully-fledged Be stars. According to findings in Sect. 1., which are supported by those in Sect. 2., the relation shown in Fig. 3a should be straightened, so that ln N (Be)/ ln N (B) = constant. It has been shown in Zorec ...
... rotating B stars that still had not attained the required properties to become fully-fledged Be stars. According to findings in Sect. 1., which are supported by those in Sect. 2., the relation shown in Fig. 3a should be straightened, so that ln N (Be)/ ln N (B) = constant. It has been shown in Zorec ...
Nitrogen abundances in solar
... Work focus: non-LTE line formation, quantitative analysis Solar-type stars are valuable tracers of the chemical evolution of the Milky Way over cosmic history because of their longevity. They are numerous, accessible at high spectral resolution out to distances of several kpc with large telescopes, ...
... Work focus: non-LTE line formation, quantitative analysis Solar-type stars are valuable tracers of the chemical evolution of the Milky Way over cosmic history because of their longevity. They are numerous, accessible at high spectral resolution out to distances of several kpc with large telescopes, ...
Mass and composition determine most of the properties of a star
... across the street, which light would appear brighter? You cannot tell by looking in the sky how bright a star truly is. The farther away the star is, the less bright it will appear. ...
... across the street, which light would appear brighter? You cannot tell by looking in the sky how bright a star truly is. The farther away the star is, the less bright it will appear. ...
StarCharacteristics
... across the street, which light would appear brighter? You cannot tell by looking in the sky how bright a star truly is. The farther away the star is, the less bright it will appear. ...
... across the street, which light would appear brighter? You cannot tell by looking in the sky how bright a star truly is. The farther away the star is, the less bright it will appear. ...
The Northern sky - Visit Isle of Man
... distinct grouping in many cultures for thousands of years. The stars that make up the Plough are the seven brightest stars of the Ursa Major constellation. In the days before we had compasses to navigate, people consulted the night sky and used the stars to work out which way pointed north was. Find ...
... distinct grouping in many cultures for thousands of years. The stars that make up the Plough are the seven brightest stars of the Ursa Major constellation. In the days before we had compasses to navigate, people consulted the night sky and used the stars to work out which way pointed north was. Find ...
inaugural091112
... • Process is rapid: clouds consumed within few hundred million years • Yet we detect plenty of clouds: clouds exist • Some Unknown Unknown (UU) holds up the clouds ...
... • Process is rapid: clouds consumed within few hundred million years • Yet we detect plenty of clouds: clouds exist • Some Unknown Unknown (UU) holds up the clouds ...
Star formation and lifetimes
... Star A has a mass of 5 solar masses and Star B has a mass of 10 solar masses. How will the fusion rate of Star A compare to the fusion rate of Star B? 1. Star A’s fusion rate will be more than two times slower than that of Star B. 2. Star A’s fusion rate will be two times slower than that of Star B ...
... Star A has a mass of 5 solar masses and Star B has a mass of 10 solar masses. How will the fusion rate of Star A compare to the fusion rate of Star B? 1. Star A’s fusion rate will be more than two times slower than that of Star B. 2. Star A’s fusion rate will be two times slower than that of Star B ...
Unit 1
... hydrogen into helium is called its main sequence lifetime – Stars spend most of their lives on the main sequence – Lifetime depends on the star’s mass and luminosity • More luminous stars burn their energy more rapidly than less luminous stars. • High-mass stars are more luminous than low-mass stars ...
... hydrogen into helium is called its main sequence lifetime – Stars spend most of their lives on the main sequence – Lifetime depends on the star’s mass and luminosity • More luminous stars burn their energy more rapidly than less luminous stars. • High-mass stars are more luminous than low-mass stars ...
Stars, Galaxies & Universe
... • During nuclear fusion, what does hydrogen fuse into? • helium • What is graphed on the H-R diagram? • brightness & temperature ...
... • During nuclear fusion, what does hydrogen fuse into? • helium • What is graphed on the H-R diagram? • brightness & temperature ...
Part 1
... Procyon (parallax angle = 0.29”) Ross 780 (parallax angle = 0.21”) Regulus (parallax angle = 0.04”) Sirius (parallax angle = 0.38”) ...
... Procyon (parallax angle = 0.29”) Ross 780 (parallax angle = 0.21”) Regulus (parallax angle = 0.04”) Sirius (parallax angle = 0.38”) ...
STAR TYPES
... Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to ...
... Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to ...
Spectroscopy, the Doppler Shift and Masses of Binary Stars
... The stars on the left are separated by 2.3 about 140 AU; those on the right by 2.6 . The two pairs are separated by about 208 (13,000 AU separation, 0.16 ly between the two pairs, all about 162 ly distant). Each pair would be about as bright as the quarter moon viewed from the other. ...
... The stars on the left are separated by 2.3 about 140 AU; those on the right by 2.6 . The two pairs are separated by about 208 (13,000 AU separation, 0.16 ly between the two pairs, all about 162 ly distant). Each pair would be about as bright as the quarter moon viewed from the other. ...
H-R Diagram
... To identify the characteristics of a star from data in the diagram To classify a star by its position in the diagram To compare the life cycle stages of stars based on their positions in the diagram Background The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature ...
... To identify the characteristics of a star from data in the diagram To classify a star by its position in the diagram To compare the life cycle stages of stars based on their positions in the diagram Background The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature ...
Astronomy Webquest Part 1: Life of Stars: Go to http://www.odec.ca
... The smallest mass stars would be found in the ____________________________________. Click on right arrow. 9. What is the relationship between a star’s mass and its brightness (luminosity)?_______________________________ True or False: Different stars have different masses. Click on right arrow. 10. ...
... The smallest mass stars would be found in the ____________________________________. Click on right arrow. 9. What is the relationship between a star’s mass and its brightness (luminosity)?_______________________________ True or False: Different stars have different masses. Click on right arrow. 10. ...
every star in the cluster.
... For a young cluster: we expect to see some brighter blue stars, some intermediate yellow (sun-like) ones, and some fainter red ones – all of them recently formed ...
... For a young cluster: we expect to see some brighter blue stars, some intermediate yellow (sun-like) ones, and some fainter red ones – all of them recently formed ...
Constellation ProjectConstellation Project(es)
... 11. If you selected a constellation that is not in the “Stories of the Constellation” research on the internet your constellations story. If you still can not find it, write your own story for your ...
... 11. If you selected a constellation that is not in the “Stories of the Constellation” research on the internet your constellations story. If you still can not find it, write your own story for your ...
HR Diagram
... luminosity and surface temperature of the stars. This discovery would go on to be the foundation for the distance determination method of spectroscopic parallax. Early in the 20th century, two astronomers independently discovered a certain pattern that all stars seemed to follow. Ejnar Hertzsprung, ...
... luminosity and surface temperature of the stars. This discovery would go on to be the foundation for the distance determination method of spectroscopic parallax. Early in the 20th century, two astronomers independently discovered a certain pattern that all stars seemed to follow. Ejnar Hertzsprung, ...
General Introduction 1. Luminosity, Flux and Magnitude The
... Stellar evolution can be easily observed using the HR diagram. Clusters contain stars presumably formed at nearly the same time and all stars within the cluster are at nearly the same distance from the Sun. The most masive and luminous stars have relatively short lifetimes, so they should move off t ...
... Stellar evolution can be easily observed using the HR diagram. Clusters contain stars presumably formed at nearly the same time and all stars within the cluster are at nearly the same distance from the Sun. The most masive and luminous stars have relatively short lifetimes, so they should move off t ...
Chapter 19 Star Formation
... reached the main sequence and will remain there as long as it has hydrogen to fuse. ...
... reached the main sequence and will remain there as long as it has hydrogen to fuse. ...
Constellations
... The first on the list of Heracles' jobs was the task of killing the Nemean Lion, a giant beast that roamed the hills and the streets of the Peloponnesian villages, devouring whomever it met. The animal's skin was immune to iron, bronze, and stone and Heracles' arrows bounced off the lion. So Heracle ...
... The first on the list of Heracles' jobs was the task of killing the Nemean Lion, a giant beast that roamed the hills and the streets of the Peloponnesian villages, devouring whomever it met. The animal's skin was immune to iron, bronze, and stone and Heracles' arrows bounced off the lion. So Heracle ...
Star catalogue
A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians, and Arabs. Most modern catalogues are available in electronic format and can be freely downloaded from NASA's Astronomical Data Center.Completeness and accuracy is described by the weakest apparent magnitude V (largest number) and the accuracy of the positions.