Stars
... Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too close to be directly imaged - until 2 May 1996, when the NPOI produced the first image of Mizar A. That image was the highest angular resolution image ever made in optical astronomy. Since t ...
... Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too close to be directly imaged - until 2 May 1996, when the NPOI produced the first image of Mizar A. That image was the highest angular resolution image ever made in optical astronomy. Since t ...
2016-Semester Exam-FALL-Review
... What is plotted on the x-axis? What is plotted on the y-axis? What color are the hottest stars? What color are the coolest stars? What is the area where 90% of all stars in the sky are found called? Where is our sun located? Where are the hottest and brightest stars located? 35. What k ...
... What is plotted on the x-axis? What is plotted on the y-axis? What color are the hottest stars? What color are the coolest stars? What is the area where 90% of all stars in the sky are found called? Where is our sun located? Where are the hottest and brightest stars located? 35. What k ...
File
... Visible nebulae that you placed yellow labels are located nearby the Solar System and invisible nebulae (but seen in radio wavelength) that you placed silver labels are located far from our Solar System. Visible light emitted from far nebulae are absorbed by foreground gas and dust in the space and ...
... Visible nebulae that you placed yellow labels are located nearby the Solar System and invisible nebulae (but seen in radio wavelength) that you placed silver labels are located far from our Solar System. Visible light emitted from far nebulae are absorbed by foreground gas and dust in the space and ...
HR Diagram - Geneva 304
... 53. Why does nuclear fusion produce so much energy? 54. Explain why stars favor fusion reactions over fission reactions. 55. Describe what conditions are necessary for two nuclei to fuse. ...
... 53. Why does nuclear fusion produce so much energy? 54. Explain why stars favor fusion reactions over fission reactions. 55. Describe what conditions are necessary for two nuclei to fuse. ...
Star Classification Lab
... Using the information provided in Table 7–2 and colored pencils, shade in each temperature region of the Hertzsprung-Russell diagram with the correct star color. In bold letters, label the following regions of your Hertzsprung-Russell diagram: White Dwarfs, Red Dwarfs, Red Giants, Main Sequence Sta ...
... Using the information provided in Table 7–2 and colored pencils, shade in each temperature region of the Hertzsprung-Russell diagram with the correct star color. In bold letters, label the following regions of your Hertzsprung-Russell diagram: White Dwarfs, Red Dwarfs, Red Giants, Main Sequence Sta ...
Neutron Stars
... • Our atoms were once parts of stars that died more than 4.6 billion years ago, whose remains were swept up into the solar system when the Sun formed ...
... • Our atoms were once parts of stars that died more than 4.6 billion years ago, whose remains were swept up into the solar system when the Sun formed ...
insert - Athens
... WHAT IS A STAR? Stars are glowing, rotating balls of gas. Even though you may see thousands of stars, you are only seeing a small fraction of the stars in our universe. Scientists estimate that there are more than a thousand billion billion stars in our universe! However, almost all of them are too ...
... WHAT IS A STAR? Stars are glowing, rotating balls of gas. Even though you may see thousands of stars, you are only seeing a small fraction of the stars in our universe. Scientists estimate that there are more than a thousand billion billion stars in our universe! However, almost all of them are too ...
1117 Discussion Notes
... If most of the mass is located in the bulge, and you look at the total amount of mass within a disk star’s orbit, that total mass will not change much as you examine stars further and further away from the bulge. Your a is getting larger and larger, but the mass is not changing by much, so the only ...
... If most of the mass is located in the bulge, and you look at the total amount of mass within a disk star’s orbit, that total mass will not change much as you examine stars further and further away from the bulge. Your a is getting larger and larger, but the mass is not changing by much, so the only ...
File - Adopt A Constellation
... • Constellations - A pattern or group of stars in the sky that humans observe in a pattern and give a name. • People of ancient time saw the constellations as character or animals in the sky. They made up stories to explain how the object, animal, or character came into the night sky • Earth rotate ...
... • Constellations - A pattern or group of stars in the sky that humans observe in a pattern and give a name. • People of ancient time saw the constellations as character or animals in the sky. They made up stories to explain how the object, animal, or character came into the night sky • Earth rotate ...
Answer Key
... supernovae per century in our galaxy, whereas we have seen only about one every 300 years from Earth. Why is this? A) Most supernovae occur in the Milky Way, which can be seen only from the southern hemisphere where, until recently, there were no observers of the sky. B) Our galaxy is peculiar in th ...
... supernovae per century in our galaxy, whereas we have seen only about one every 300 years from Earth. Why is this? A) Most supernovae occur in the Milky Way, which can be seen only from the southern hemisphere where, until recently, there were no observers of the sky. B) Our galaxy is peculiar in th ...
HR Diagram and Stellar Fusion
... • …Ejnar Hertzsprung and H. N. Russell, graph (see illustration) showing the luminosity of a star as a function of its surface temperature. The luminosity, or absolute magnitude, increases upwards on the vertical axis; the temperature (or some temperature-dependent characteristic such as spectral cl ...
... • …Ejnar Hertzsprung and H. N. Russell, graph (see illustration) showing the luminosity of a star as a function of its surface temperature. The luminosity, or absolute magnitude, increases upwards on the vertical axis; the temperature (or some temperature-dependent characteristic such as spectral cl ...
Exam #3 study guide
... Notes for Exam #3 The third exam on October 31st will cover all material through the syllabus week 9. The exam will focus primarily on material from weeks 7, 8 and 9, which include: 1. Nuclear physics (isotopes, radioactivity) 2. Stars and galaxies (H-R diagrams; big bang) 3. The Earth and other pla ...
... Notes for Exam #3 The third exam on October 31st will cover all material through the syllabus week 9. The exam will focus primarily on material from weeks 7, 8 and 9, which include: 1. Nuclear physics (isotopes, radioactivity) 2. Stars and galaxies (H-R diagrams; big bang) 3. The Earth and other pla ...
Lecture 8a Star Formation 10/15/2014
... • No heavy elements. Just Hydrogen and Helium • Often outside plane of galaxy Understood as group of old stars formed in early history of the galaxy PHYS 162 Lecture 8a ...
... • No heavy elements. Just Hydrogen and Helium • Often outside plane of galaxy Understood as group of old stars formed in early history of the galaxy PHYS 162 Lecture 8a ...
xam2ans
... (c) Consider this weak reaction: p+ + e → n + e . Why does it almost never occur in the core of a main sequence star like the Sun? Answer: The rest mass energy of a neutron is larger than a proton plus electron. Consequently this reaction is endothermic, which means energetically unfavorable. (d) ...
... (c) Consider this weak reaction: p+ + e → n + e . Why does it almost never occur in the core of a main sequence star like the Sun? Answer: The rest mass energy of a neutron is larger than a proton plus electron. Consequently this reaction is endothermic, which means energetically unfavorable. (d) ...
Unit 1
... A black hole can be both very small, and have an accretion disk that can emit enough radiation Likely that at the centers of these galactic nuclei, there are supermassive black holes Intense magnetic fields in the accretion disk pump superheated gas out into jets that leave the nucleus There are sti ...
... A black hole can be both very small, and have an accretion disk that can emit enough radiation Likely that at the centers of these galactic nuclei, there are supermassive black holes Intense magnetic fields in the accretion disk pump superheated gas out into jets that leave the nucleus There are sti ...
E1 Introduction to the Universe NEW
... Distance between galaxies • 100 kpc for galaxies in clusters • A few Mpc for galaxies in different clusters ...
... Distance between galaxies • 100 kpc for galaxies in clusters • A few Mpc for galaxies in different clusters ...
Final Exam Earth science
... Main sequence stars. Hertzsprung-Russell diagram, a graph used by astronomers. It shows a relationship between surface temperature and brightness. Most stars (90%) form a diagonal band called the main sequence stars. In the main sequence, surface temperature increases as brightness increases. Our su ...
... Main sequence stars. Hertzsprung-Russell diagram, a graph used by astronomers. It shows a relationship between surface temperature and brightness. Most stars (90%) form a diagonal band called the main sequence stars. In the main sequence, surface temperature increases as brightness increases. Our su ...
Properties of Stars in general
... What does this tell us? • Most stars are seen to lie on the Main Sequence. – This is because stars spend the major part of their life in the region of the main sequence – During this period they are burning Hydrogen into Helium in their cores. – Their position in the main sequence is dependant on t ...
... What does this tell us? • Most stars are seen to lie on the Main Sequence. – This is because stars spend the major part of their life in the region of the main sequence – During this period they are burning Hydrogen into Helium in their cores. – Their position in the main sequence is dependant on t ...
Chapter 4: Spectroscopy
... the molecules must be discreet • Only transitions by an amount E=hf are allowed • The implication is that light is discreet or quantised ...
... the molecules must be discreet • Only transitions by an amount E=hf are allowed • The implication is that light is discreet or quantised ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.