Project 4: The HR diagram. Open clusters
... luminosity stars. These are the main sequence stars. Our Sun is one of them. There are a few stars that are not in this diagonal strip. There are some low temperature, high luminosity stars - these are called giants and supergiants. The reason they are so ...
... luminosity stars. These are the main sequence stars. Our Sun is one of them. There are a few stars that are not in this diagonal strip. There are some low temperature, high luminosity stars - these are called giants and supergiants. The reason they are so ...
Part 1: If a 10000 K blackbody has a wavelength of peak emission at
... Most students didn’t come close to providing this kind of answer even though it was the basis for the Homework 3 assignment of determining spectral types! A typical answer was something like this: “Astronomers measure the color and luminosity of a star to determine its spectral ...
... Most students didn’t come close to providing this kind of answer even though it was the basis for the Homework 3 assignment of determining spectral types! A typical answer was something like this: “Astronomers measure the color and luminosity of a star to determine its spectral ...
Young Stars
... •Lighter than 0.08 – they don’t get hot enough for fusion •Heavier than 150 – they burn so furiously they blow off ...
... •Lighter than 0.08 – they don’t get hot enough for fusion •Heavier than 150 – they burn so furiously they blow off ...
Chapter 8 - TeacherWeb
... A star life cycle: first stage: it is a ball of gas and dust. Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new s ...
... A star life cycle: first stage: it is a ball of gas and dust. Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new s ...
Early Spring Observing – Millstone News Night Sky
... The Beehive contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. We often find it, rather than the constellation it is found in (Cancer). From Wikipedia: The ...
... The Beehive contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. We often find it, rather than the constellation it is found in (Cancer). From Wikipedia: The ...
Lecture 10 - University of Minnesota
... The First Generation of Stars • Astronomers call elements other than hydrogen and helium “metals” – Metallicity is a measure of how much of something is made out of metals ...
... The First Generation of Stars • Astronomers call elements other than hydrogen and helium “metals” – Metallicity is a measure of how much of something is made out of metals ...
2.1 Introduction
... Figure 2.1 shows two examples of star clusters. Star clusters allow us to appreciate directly some of the physical properties of stars for the simple reasons that, to a first approximation, all the stars of a cluster: (i) are at the same distance from the Sun, and (ii) have the same age. NGC 265 (le ...
... Figure 2.1 shows two examples of star clusters. Star clusters allow us to appreciate directly some of the physical properties of stars for the simple reasons that, to a first approximation, all the stars of a cluster: (i) are at the same distance from the Sun, and (ii) have the same age. NGC 265 (le ...
File - YEAR 11 EBSS PHYSICS DETAILED STUDIES
... about losses as light travelled through gasses or dust clouds. We can also determine the size of a star by its spectrum. To do this we need to know its Luminosity, the amount of energy given off by each unit area, and an accurate surface temperature. ...
... about losses as light travelled through gasses or dust clouds. We can also determine the size of a star by its spectrum. To do this we need to know its Luminosity, the amount of energy given off by each unit area, and an accurate surface temperature. ...
Stars
... toward each other by gravity • Many stars orbit each other • More than 50% of stars occur in pairs or multiples. • Binary stars are used to determine the star property most difficult to calculate – It’s mass ...
... toward each other by gravity • Many stars orbit each other • More than 50% of stars occur in pairs or multiples. • Binary stars are used to determine the star property most difficult to calculate – It’s mass ...
Nov - Wadhurst Astronomical Society
... month it rises three hours before the Sun and is so bright it is impossible to confuse it with any other astronomical body. Mars still lies in a difficult position for observation from these latitudes. It is in the constellation of Ophiuchus at magnitude +1.2. As I described last month, the shallow ...
... month it rises three hours before the Sun and is so bright it is impossible to confuse it with any other astronomical body. Mars still lies in a difficult position for observation from these latitudes. It is in the constellation of Ophiuchus at magnitude +1.2. As I described last month, the shallow ...
Black Hole
... The surface gravity is so high that a 150 pound person would weigh a million tons. You would be squeezed flatter than a piece of paper. The fastest pulsar known has a period of 0.0014 s. The star spins 642 times per second. Dozens of such “millisecond pulsars” are known. More are being discovered. I ...
... The surface gravity is so high that a 150 pound person would weigh a million tons. You would be squeezed flatter than a piece of paper. The fastest pulsar known has a period of 0.0014 s. The star spins 642 times per second. Dozens of such “millisecond pulsars” are known. More are being discovered. I ...
Milky Way thin disk
... Age and metallicity • Bulge/bar stars are old: of order 10 Gyr • They are also metal-rich; more so than the disk near the Sun • However, so are inner disk stars ...
... Age and metallicity • Bulge/bar stars are old: of order 10 Gyr • They are also metal-rich; more so than the disk near the Sun • However, so are inner disk stars ...
Lecture02-ASTA01 - University of Toronto
... you only how bright the star is as seen from Earth. • It doesn’t reveal anything about a star’s true power output – because the star’s distance is not known! • There is an “absolute magnitude scale” where we assign magnitudes that the object would have if placed at a certain distance known as 10 par ...
... you only how bright the star is as seen from Earth. • It doesn’t reveal anything about a star’s true power output – because the star’s distance is not known! • There is an “absolute magnitude scale” where we assign magnitudes that the object would have if placed at a certain distance known as 10 par ...
Document
... Chemical composition and surface temperature Speed and direction of motion using the Doppler Effect If source of waves is moving towards us, their frequency is shifted upwards Stars moving towards us are called blue-shifted If source of waves is moving away from us, their frequency is shif ...
... Chemical composition and surface temperature Speed and direction of motion using the Doppler Effect If source of waves is moving towards us, their frequency is shifted upwards Stars moving towards us are called blue-shifted If source of waves is moving away from us, their frequency is shif ...
Stellar Evolution Chapter 12
... recent maximum can be used to predict the time of a future maximum. Suppose that you calculate the time of future maximum brightness and then make measurements to observe this maximum. After the correction for Earth's orbital position has been made, you find that the maximum occurred a few minutes l ...
... recent maximum can be used to predict the time of a future maximum. Suppose that you calculate the time of future maximum brightness and then make measurements to observe this maximum. After the correction for Earth's orbital position has been made, you find that the maximum occurred a few minutes l ...
Astronomy Webquest Part 1: Life of Stars: Go to http://www.odec.ca
... 1. Stars are born in _______________. When the clouds of interstellar dust and gas pull in gas and start to collapse, the increased heat will cause the atoms to fuse to helium and form ___________________. Click on next. 2. The longest stage of the star, covering almost ______% is in the ___________ ...
... 1. Stars are born in _______________. When the clouds of interstellar dust and gas pull in gas and start to collapse, the increased heat will cause the atoms to fuse to helium and form ___________________. Click on next. 2. The longest stage of the star, covering almost ______% is in the ___________ ...
