![Unit 1](http://s1.studyres.com/store/data/008082696_1-648264acf8c284896cff4c5eb07092d6-300x300.png)
Unit 1
... – 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 • High mass stars are therefore shorter-lived! ...
... – 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 • High mass stars are therefore shorter-lived! ...
Types of Stars - WordPress.com
... • Hertzsprung and Russell independently discovered that each type of star has specific properties. They organized their findings into what is now called a Hertzsprung and Russell ( H-R) diagram ...
... • Hertzsprung and Russell independently discovered that each type of star has specific properties. They organized their findings into what is now called a Hertzsprung and Russell ( H-R) diagram ...
HW7-3
... (261) Learning to Look 1-2; Supp. Q. 4 (260) RQ 3: What is a brown dwarf? A brown dwarf is a “failed star.” They are balls of gas without fusion. The upper end of brown dwarfs is well defined: 8% M☉ = 80 Jupiters. There is a not-so-welldefined line between small brown dwarfs and large planets. (260) ...
... (261) Learning to Look 1-2; Supp. Q. 4 (260) RQ 3: What is a brown dwarf? A brown dwarf is a “failed star.” They are balls of gas without fusion. The upper end of brown dwarfs is well defined: 8% M☉ = 80 Jupiters. There is a not-so-welldefined line between small brown dwarfs and large planets. (260) ...
Theoretical Modeling of Massive Stars Mr. Russell University of Delaware
... Hubble Ultra-Deep Field (NASA) ...
... Hubble Ultra-Deep Field (NASA) ...
Sagittarius - columbusastronomy
... Constellation: Carina 2nd brightest star in the night sky Magnitude: -0.72 Type: supergiant, spectral type F Color: white to the naked eye Temperature: 7,350 K Distance: 310 light years RA: 6h 24m ...
... Constellation: Carina 2nd brightest star in the night sky Magnitude: -0.72 Type: supergiant, spectral type F Color: white to the naked eye Temperature: 7,350 K Distance: 310 light years RA: 6h 24m ...
File
... have the same surface temperature (they are both Spectral Class M stars). However, Betelguese is millions of times brighter (it has a greater or more negative absolute magnitude). ...
... have the same surface temperature (they are both Spectral Class M stars). However, Betelguese is millions of times brighter (it has a greater or more negative absolute magnitude). ...
A stars
... luminosity), an Earth-sized planet would have to orbit at about the distance of Mercury from the star. ...
... luminosity), an Earth-sized planet would have to orbit at about the distance of Mercury from the star. ...
Aspire: Star Life Cycle - Easy Peasy All-in
... 20. Choose a hypothesis and then continue. 21. Where would you expect to find other main sequence stars of the same size on this diagram? (2 Points) 22. Which description of the relationship is correct? (2 Points) 23. Write down the hypothesis that is correct. (2 Points) 24. Determine if the followi ...
... 20. Choose a hypothesis and then continue. 21. Where would you expect to find other main sequence stars of the same size on this diagram? (2 Points) 22. Which description of the relationship is correct? (2 Points) 23. Write down the hypothesis that is correct. (2 Points) 24. Determine if the followi ...
Measuring Stars
... •Luminous at top, dim at bottom •Stars fall into categories: •The Main Sequence contains about 90% of the bright stars •The Giants are rare but very bright •The Supergiants are very rare but extremely bright •The White Dwarfs are not uncommon but very dim ...
... •Luminous at top, dim at bottom •Stars fall into categories: •The Main Sequence contains about 90% of the bright stars •The Giants are rare but very bright •The Supergiants are very rare but extremely bright •The White Dwarfs are not uncommon but very dim ...
here - Boise State University
... 5. In your writing, assignment, what specific things are you required to write about? Click on the “Research Process” page and answer the questions below: 6. What is a star and what two gases make up a star? 7. As you watched the Youtube clip, what kinds of colors did the various stars have? 8. As y ...
... 5. In your writing, assignment, what specific things are you required to write about? Click on the “Research Process” page and answer the questions below: 6. What is a star and what two gases make up a star? 7. As you watched the Youtube clip, what kinds of colors did the various stars have? 8. As y ...
a new isotopic abundance anomaly in chemically peculiar stars
... The stars with isotopic anomalies are members of a diverse group with unusual and sometimes bizarre surface compositions. They are now called CP stars, where the “CP” stands for chemically peculiar. This notation was introduced to describe chemically peculiar main-sequence stars – stars still conver ...
... The stars with isotopic anomalies are members of a diverse group with unusual and sometimes bizarre surface compositions. They are now called CP stars, where the “CP” stands for chemically peculiar. This notation was introduced to describe chemically peculiar main-sequence stars – stars still conver ...
Lecture 5: The H-R diagram, standard candles and cosmic distances
... Vertical axis: luminosity of star – could be measured as power, e.g., watts – or absolute magnitude – or in units of Sun's luminosity: Lstar/L ...
... Vertical axis: luminosity of star – could be measured as power, e.g., watts – or absolute magnitude – or in units of Sun's luminosity: Lstar/L ...
Lecture 12
... The inverse of the parallax angle in arcseconds equals the distance to an object in parsecs. • The nearest star is about 4 light years away, so p = 0.75 arcseconds. • This is the largest parallax angle, all other stars have small p values. ...
... The inverse of the parallax angle in arcseconds equals the distance to an object in parsecs. • The nearest star is about 4 light years away, so p = 0.75 arcseconds. • This is the largest parallax angle, all other stars have small p values. ...
Analyzing Spectra
... 1. What does a set of matching vertical lines indicate? _________________________________________ 2. What are the five known substances in this activity? ________________________________________ Look closely at the spectrum below. Those black lines are caused by elements in the star's atmosphere. As ...
... 1. What does a set of matching vertical lines indicate? _________________________________________ 2. What are the five known substances in this activity? ________________________________________ Look closely at the spectrum below. Those black lines are caused by elements in the star's atmosphere. As ...
8 clusters stellar evo
... HR diagram Old stars leave the main sequence Cluster age <=> turnoff point ...
... HR diagram Old stars leave the main sequence Cluster age <=> turnoff point ...
Section 7.3 - CPO Science
... Blue giant stars are hot and much more massive than the sun. Stars that are smaller than the sun come in two main categories, dwarfs and neutron stars. ...
... Blue giant stars are hot and much more massive than the sun. Stars that are smaller than the sun come in two main categories, dwarfs and neutron stars. ...
Lesson 10 Red Shift
... "visual spectrum." In the visual spectrum, wavelength corresponds to colour. In other words, violet and red each have a characteristic range of wavelengths. In the visible spectrum, violet has the shortest wavelengths and red as the longest. Normally when we look at white light, such as from the Sun ...
... "visual spectrum." In the visual spectrum, wavelength corresponds to colour. In other words, violet and red each have a characteristic range of wavelengths. In the visible spectrum, violet has the shortest wavelengths and red as the longest. Normally when we look at white light, such as from the Sun ...
Our Star - the Sun
... The color ratios of a star are the ratios of brightness values obtained through different standard filters, such as the U, B, and V filters These ratios are a measure of the star’s surface temperature ...
... The color ratios of a star are the ratios of brightness values obtained through different standard filters, such as the U, B, and V filters These ratios are a measure of the star’s surface temperature ...
Integrative Studies 410 Our Place in the Universe
... fuel to burn) we can obtain the lifetime • Large hot blue stars: ~ 20 million years • The Sun: 10 billion years • Small cool red dwarfs: trillions of years ...
... fuel to burn) we can obtain the lifetime • Large hot blue stars: ~ 20 million years • The Sun: 10 billion years • Small cool red dwarfs: trillions of years ...
LAB: Star Classification
... ScienceDaily (Dec. 12, 2008) — Astronomy & Astrophysics is publishing observations of the white dwarf KPD 0005+5106. The team who present these observations show that this white dwarf is among the hottest stars known so far, with a temperature of 200,000º K at its surface. Stars of intermediate mass ...
... ScienceDaily (Dec. 12, 2008) — Astronomy & Astrophysics is publishing observations of the white dwarf KPD 0005+5106. The team who present these observations show that this white dwarf is among the hottest stars known so far, with a temperature of 200,000º K at its surface. Stars of intermediate mass ...
Stars
... Example: Hydrogen lines are relatively weak in the hottest star because it is mostly ionized. Conversely, hotter temperatures are needed to excite and ionize Helium so these lines are strongest in the hottest star. ...
... Example: Hydrogen lines are relatively weak in the hottest star because it is mostly ionized. Conversely, hotter temperatures are needed to excite and ionize Helium so these lines are strongest in the hottest star. ...
Document
... Many more supernovae than we do now. Many more stars being formed than we do now. None of the above. ...
... Many more supernovae than we do now. Many more stars being formed than we do now. None of the above. ...
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.