Planets and Stars
... huge system of gases, dust, and stars. Our solar system is on the edge of the Milky Way galaxy. ...
... huge system of gases, dust, and stars. Our solar system is on the edge of the Milky Way galaxy. ...
The Milky Way - Houston Community College System
... difficult. To discover the properties of stars, astronomers have used their telescopes and spectrographs in clever ways to learn the secrets hidden in starlight. The result is a family portrait of the stars. In this chapter you will find answers to five important questions about stars: • How far awa ...
... difficult. To discover the properties of stars, astronomers have used their telescopes and spectrographs in clever ways to learn the secrets hidden in starlight. The result is a family portrait of the stars. In this chapter you will find answers to five important questions about stars: • How far awa ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... compostion. All of these can be measured from the spectrum of the star. For each of them, you will be comparing the flux at one wavelength to the flux at another wavelength. Although the value of the flux at any given wavelength depends on the distance you are from a given star, the ratio between fl ...
... compostion. All of these can be measured from the spectrum of the star. For each of them, you will be comparing the flux at one wavelength to the flux at another wavelength. Although the value of the flux at any given wavelength depends on the distance you are from a given star, the ratio between fl ...
The birth and life of stars
... Relatively young stars are metal-rich (Population I); ancient stars are metal-poor (Population II). ...
... Relatively young stars are metal-rich (Population I); ancient stars are metal-poor (Population II). ...
GEARS Workshop Monday - Georgia Southern University
... • Main sequence is the stage of existence where stars are fusing hydrogen to helium • Spend largest fraction of their existence doing this • More massive stars – short lived • Low mass stars – long lived ...
... • Main sequence is the stage of existence where stars are fusing hydrogen to helium • Spend largest fraction of their existence doing this • More massive stars – short lived • Low mass stars – long lived ...
The H-R Diagram
... but not including iron, and each reaction takes higher temperature and delivers less luminosity so it goes quicker. • Know H, He, C, and importance of Iron. ...
... but not including iron, and each reaction takes higher temperature and delivers less luminosity so it goes quicker. • Know H, He, C, and importance of Iron. ...
Classnotes 9_159 - University of Texas Astronomy
... charge. The proton has one unit of positive charge. The neutron, as its name implies, has no charge. A free (isolated) proton is stable -- experiments have shown that, if it decays, it lives at least 1033 years or so before decaying. A free neutron decays spontaneously in about 11 minutes. A neutro ...
... charge. The proton has one unit of positive charge. The neutron, as its name implies, has no charge. A free (isolated) proton is stable -- experiments have shown that, if it decays, it lives at least 1033 years or so before decaying. A free neutron decays spontaneously in about 11 minutes. A neutro ...
Stars: from Adolescence to Old Age
... Larger, more luminous stars will pulsate with longer periods than the smaller, fainter stars because gravity takes longer to pull the more extended outer layers of the larger stars back. ...
... Larger, more luminous stars will pulsate with longer periods than the smaller, fainter stars because gravity takes longer to pull the more extended outer layers of the larger stars back. ...
THE CHANGING SKY
... During the course of a night or a year, the stars appear to change their positions in the sky. This is not due to the stars moving through space, but rather the fact that the Earth is moving and we are moving with it. In this exercise, we will use the computer program Skyglobe 1 to investigate these ...
... During the course of a night or a year, the stars appear to change their positions in the sky. This is not due to the stars moving through space, but rather the fact that the Earth is moving and we are moving with it. In this exercise, we will use the computer program Skyglobe 1 to investigate these ...
charts_set_7
... Luminosity also called “absolute brightness”. How bright a star appears to us is the “apparent brightness”, which depends on its luminosity and distance from us: apparent brightness α luminosity / (distance)2 So we can determine luminosity if apparent brightness and distance are measured: luminosity ...
... Luminosity also called “absolute brightness”. How bright a star appears to us is the “apparent brightness”, which depends on its luminosity and distance from us: apparent brightness α luminosity / (distance)2 So we can determine luminosity if apparent brightness and distance are measured: luminosity ...
Stellar Temperature & Luminosity Student Page Purpose
... 1. If the peak in the black body curve of a star is at a longer wavelength than the peak wavelength for our Sun, how does the surface temperature of that star compare to our Sun’s surface temperature? 2. Which of the following events will have the largest effect on a star’s brightness — doubling its ...
... 1. If the peak in the black body curve of a star is at a longer wavelength than the peak wavelength for our Sun, how does the surface temperature of that star compare to our Sun’s surface temperature? 2. Which of the following events will have the largest effect on a star’s brightness — doubling its ...
Answer - OKBU.net
... find north? Locate the two _pointer__ stars on the bowl of the Big Dipper, follow these to the tip of the handle of the Little Dipper, which is __Polaris_ Stars appear to move ___counterclockwise__ around Polaris. Nature & Culture. Most cultures have recognized Orion's stars as a constellation (by s ...
... find north? Locate the two _pointer__ stars on the bowl of the Big Dipper, follow these to the tip of the handle of the Little Dipper, which is __Polaris_ Stars appear to move ___counterclockwise__ around Polaris. Nature & Culture. Most cultures have recognized Orion's stars as a constellation (by s ...
Masers and high mass star formation Claire Chandler
... Indeed, around the BN/KL region there is the well known outflow with an age of about 1000 years. It is possible that the outflow and the ejection of BN and I were result of the same ...
... Indeed, around the BN/KL region there is the well known outflow with an age of about 1000 years. It is possible that the outflow and the ejection of BN and I were result of the same ...
Photometric Surveys and Variable stars
... The MSTO of NGC 2301 lies around A0, so delta Scuti and gamma Doradus stars should be present. Perhaps some cluster Cepheids, too? ...
... The MSTO of NGC 2301 lies around A0, so delta Scuti and gamma Doradus stars should be present. Perhaps some cluster Cepheids, too? ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.