Chapter 29 Notes
... Sequence and so most stars are located in the Main Sequence section of the H-R diagram • Small mass stars burn fuel slowly and have a long life span • Large mass stars burn their fuel very quickly and are much brighter than small mass stars ...
... Sequence and so most stars are located in the Main Sequence section of the H-R diagram • Small mass stars burn fuel slowly and have a long life span • Large mass stars burn their fuel very quickly and are much brighter than small mass stars ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... independently discovered this diagram’s usefulness • Both plotted spectral type (temperature) versus stellar luminosity • Saw trends in the plots • Did not plot randomly ...
... independently discovered this diagram’s usefulness • Both plotted spectral type (temperature) versus stellar luminosity • Saw trends in the plots • Did not plot randomly ...
Document
... When astronomers look through their telescopes, they see billions of stars. What can they learn fromThe goal of this problem set is for you to understand that astronomers classify stars on the basis of two different criteria: (1) the intensity of one of the H absorption lines (called H), and (2) on ...
... When astronomers look through their telescopes, they see billions of stars. What can they learn fromThe goal of this problem set is for you to understand that astronomers classify stars on the basis of two different criteria: (1) the intensity of one of the H absorption lines (called H), and (2) on ...
Friday, November 7 - Otterbein University
... – labeled alphabetically in Greek alphabet – Alpha Centauri is the brightest star in constellation Centaurus ...
... – labeled alphabetically in Greek alphabet – Alpha Centauri is the brightest star in constellation Centaurus ...
Today`s Class: Measuring temperatures of stars Astronomer`s
... • Important: the different spectral lines seen are NOT primarily because stars are made of different elements ...
... • Important: the different spectral lines seen are NOT primarily because stars are made of different elements ...
22 October: The Formation of Stars
... • To see how stars form, look at places where there are young stars. • When we see massive main sequence stars (spectral class O), we know they are young. • With fairly simple observations, we can find groups of O and B stars (OB associations) ...
... • To see how stars form, look at places where there are young stars. • When we see massive main sequence stars (spectral class O), we know they are young. • With fairly simple observations, we can find groups of O and B stars (OB associations) ...
Stars - BrainBytes
... They mature, grow old, and die The more massive a star is, the shorter its life ...
... They mature, grow old, and die The more massive a star is, the shorter its life ...
The Hertzsprung-Russell Diagram
... sequence star. Hint: plot both stars on an HR diagram and note how their temperatures and luminosities compare. ...
... sequence star. Hint: plot both stars on an HR diagram and note how their temperatures and luminosities compare. ...
INV 12B MOTION WITH CHANGING SPEED DRY LAB DATA
... 3. How does the sun compare to the other stars on the main sequence? (Hint: The sun’s color is …..What part of the main sequence is it in – upper left, lower left, etc.?) ...
... 3. How does the sun compare to the other stars on the main sequence? (Hint: The sun’s color is …..What part of the main sequence is it in – upper left, lower left, etc.?) ...
Discussion Activity #11a
... Please choose the best answer. When you are finished, tear this top sheet off and hand it in. The packet of MC questions below is yours to keep. 1. Which of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, and so on) in a high-mass star is NOT true? A. ...
... Please choose the best answer. When you are finished, tear this top sheet off and hand it in. The packet of MC questions below is yours to keep. 1. Which of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, and so on) in a high-mass star is NOT true? A. ...
PowerPoint
... Some Reasons for the great abundance of Low-Mass stars… 1) Obviously requires less material to make (many!) Low-Mass Stars, than High-Mass ones; 2) Even though High-Mass stars have more “fuel” (Hydrogen)… They “burn through it” (fusion) much sooner! ...
... Some Reasons for the great abundance of Low-Mass stars… 1) Obviously requires less material to make (many!) Low-Mass Stars, than High-Mass ones; 2) Even though High-Mass stars have more “fuel” (Hydrogen)… They “burn through it” (fusion) much sooner! ...
Name Date Period ______ 30.1 Characteristics of Stars Definitions
... 19. What are circumpolar stars? What is one example? ...
... 19. What are circumpolar stars? What is one example? ...
Chapter 29 Stellar Evolution
... photo at left compare? • What are some ways the stars in the photo could be grouped or classified? ...
... photo at left compare? • What are some ways the stars in the photo could be grouped or classified? ...
Ginger Dublin 6th Grade Science
... collapse. • So dense that even light can’t escape its gravity. ...
... collapse. • So dense that even light can’t escape its gravity. ...
stars - Legacy High School
... 10. Which letter on the Herz.-Russell Diagram shows where the brightest and hottest stars would be? _________ 11. Which is brighter, a white dwarf or a red giant?__________ 12. Which is hotter, a white dwarf or a red giant?____________ 13. Name one main sequence star__________________ ...
... 10. Which letter on the Herz.-Russell Diagram shows where the brightest and hottest stars would be? _________ 11. Which is brighter, a white dwarf or a red giant?__________ 12. Which is hotter, a white dwarf or a red giant?____________ 13. Name one main sequence star__________________ ...
TYPES OF STARS
... their Hα lines. If you can't rank them all easily, try coloring in the area between the line connecting the triangle centers and the actual spectrum. The bigger the colored area, the greater the line strength. Originally, astronomers classified those stars with the strongest hydrogen lines as 'A' st ...
... their Hα lines. If you can't rank them all easily, try coloring in the area between the line connecting the triangle centers and the actual spectrum. The bigger the colored area, the greater the line strength. Originally, astronomers classified those stars with the strongest hydrogen lines as 'A' st ...
HW #4 (due March 27)
... their Hα lines. If you can't rank them all easily, try coloring in the area between the line connecting the triangle centers and the actual spectrum. The bigger the colored area, the greater the line strength. Originally, astronomers classified those stars with the strongest hydrogen lines as 'A' st ...
... their Hα lines. If you can't rank them all easily, try coloring in the area between the line connecting the triangle centers and the actual spectrum. The bigger the colored area, the greater the line strength. Originally, astronomers classified those stars with the strongest hydrogen lines as 'A' st ...
22 September: Starlight
... The Universal Gas constant Planck’s constant The electrical charge of the electron ...
... The Universal Gas constant Planck’s constant The electrical charge of the electron ...
File
... 22) What is a galaxy? 23) What are the three classifications of galaxies? What do each look like? Which is most common? 24) What shape is the Milky Way? 25) What is the local group? 26) How many stars are in the Milky Way? 27) Approximately how big is the Milky Way 28) The largest known galaxy is wh ...
... 22) What is a galaxy? 23) What are the three classifications of galaxies? What do each look like? Which is most common? 24) What shape is the Milky Way? 25) What is the local group? 26) How many stars are in the Milky Way? 27) Approximately how big is the Milky Way 28) The largest known galaxy is wh ...
Chapter 27 Review Guide// ESS
... 2. What is the relationship of color to a star’s surface temperature? 3. How do astronomers determine a star’s composition and temperature? 4. What are the two types of stellar motion? a. What causes the stars to “move” westward across the night sky? b. Why do we see different stars at different tim ...
... 2. What is the relationship of color to a star’s surface temperature? 3. How do astronomers determine a star’s composition and temperature? 4. What are the two types of stellar motion? a. What causes the stars to “move” westward across the night sky? b. Why do we see different stars at different tim ...
STARS and GALAXIES
... • The sun converts atomic nuclei into energy. • The energy of nuclear fusion of most stars is eventually radiated to space as types of electromagnetic energy. ...
... • The sun converts atomic nuclei into energy. • The energy of nuclear fusion of most stars is eventually radiated to space as types of electromagnetic energy. ...
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Light from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with absorption lines. Each line indicates an ion of a certain chemical element, with the line strength indicating the abundance of that ion. The relative abundance of the different ions varies with the temperature of the photosphere. The spectral class of a star is a short code summarizing the ionization state, giving an objective measure of the photosphere's temperature and density.Most stars are currently classified under the Morgan–Keenan (MK) system using the letters O, B, A, F, G, K, and M, a sequence from the hottest (O type) to the coolest (M type). Each letter class is then subdivided using a numeric digit with 0 being hottest and 9 being coolest (e.g. A8, A9, F0, F1 form a sequence from hotter to cooler). The sequence has been expanded with classes for other stars and star-like objects that do not fit in the classical system, such class D for white dwarfs and class C for carbon stars.In the MK system a luminosity class is added to the spectral class using Roman numerals. This is based on the width of certain absorption lines in the star's spectrum which vary with the density of the atmosphere and so distinguish giant stars from dwarfs. Luminosity class 0 or Ia+ stars for hypergiants, class I stars for supergiants, class II for bright giants, class III for regular giants, class IV for sub-giants, class V for main-sequence stars, class sd for sub-dwarfs, and class D for white dwarfs. The full spectral class for the Sun is then G2V, indicating a main-sequence star with a temperature around 5,800K.