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Weiguang Zhang 1,* Yun Zhong 1, Minyu Tan 2,*, Ning Tang 2 and
Weiguang Zhang 1,* Yun Zhong 1, Minyu Tan 2,*, Ning Tang 2 and

... full-width peak, but the S(2p) spectrum showed a broad peak with a shoulder suggesting two types of sulfur atoms. The two peaks indicated by the broken lines, which were obtained by a graphical resolution, were almost equal in intensity. The peak with the lower binding energy of the two in the S(2p) ...
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Solving Problems with the Sloan Digital Sky Survey

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Notes to Mrs. Kerns - Londonderry School District
Notes to Mrs. Kerns - Londonderry School District

... Hubble examined the light from stars in the distant galaxies. He found that the pattern of spectral lines of the elements was shifted toward the red end of the spectrum. Red Shift = Objects that are moving away Blue Shift = Objects that are moving toward us ...
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Life Cycle of a Star - Intervention Worksheet

... _____ The force of gravity pulls a nebula together forming clumps called protostars. _____ Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine. Section Two - Vocabulary Match the word on the left with the definition on the right. ____ black ...
Stars Life Cycle WS
Stars Life Cycle WS

... _____ The force of gravity pulls a nebula together forming clumps called protostars. _____ Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine. Section Two - Vocabulary Match the word on the left with the definition on the right. ____ black ...
Introduction to Basic Stargazing Part I - Naples Free-Net
Introduction to Basic Stargazing Part I - Naples Free-Net

... planets varies as they move around the Solar System, mostly due to their varying distance from Earth. It is interesting to note that the magnitude of some stars can vary also, but once again that is an article for another time. Notice how bright stars, particularly Sirius, sparkle and flash differen ...
Life Cycle of a Star
Life Cycle of a Star

... _____ The force of gravity pulls a nebula together forming clumps called protostars. _____ Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine. Section Two - Vocabulary Match the word on the left with the definition on the right. ____ black ...
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Solar-like oscillations in intermediate red giants

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Water on the Sun: the Sun yields more secrets to

... are signi® cantly cooler than the rest of the Sun’ s atmosphere. While the atmosphere of the Sun is about 55008 C, sunspots can be as cool as 30008 C. This diŒerence in temperature results in signi® cant changes in the chemistry of the diŒerent regions of the Sun’ s atmosphere. At a temperature of 5 ...
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A Walk through the Universe

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Lecture 6

... • gravity causes elliptical orbits where planet moves faster when closer to the Sun as force of gravity is larger there • Third Law actually D3 =(Msun + Mplanet) x P2 D=distance from Sun and P=period  weaker force further away gives longer period • As mass Sun much larger can mostly ignore mass pla ...
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Chapter1 Fundamental law of geometrical optics 第一章 几何光学的

... Frequency ν: lying between 7.5*10 14 for violet light and 4*10 14 for deep red light. Wavelength λ: dividing the velocity by the frequency. λ=v/ν λ: 0.4μm~0.75μm(micrometer) Velocity v=3*10 10 cm/sec in empty space ...
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FP11: DRAKE et al. - Astronomical Institute WWW Homepage

... et al. (1980). Two “Li spots” are observed on the surface of the star. The Li I line originated in spot 1 appears at the phase φ = – 0.146 = 0.832 and moves to the red up to the phase φ = 0.146. The second Li-rich spot (spot 2) appeared by the phase φ = 0.319 and is observed up to the phase φ = 0.62 ...
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The Hydrogen Ionization Front-Photosphere

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... EXPAND -> points move. Farther points move more, over same time -> faster! But still center seems important egoist located AT CENTER of this picture, says I’m at center of Universe, but what if GREEN? From that perspective, see life looking out from same vantage point, so slide pattern so both viewp ...
Biography of a Star - Max-Planck
Biography of a Star - Max-Planck

... For example, they had determined the masses of many stars; they knew their apparent and absolute (actual, independent of distance) brightnesses, their colors and surface temperatures, and their spectral types. In 1913, American Henry N. Russell (1877 to 1957) had the idea to check whether the differ ...
REACH FOR THE STARS MLK 2009
REACH FOR THE STARS MLK 2009

... How many AU does light travel in one year? _____________ What are Hayashi tracks? ______________________________________________________________ What causes a sun like star to suddenly contract in diameter? ___________________________________ How many times will a blue giant orbit the center of the ...
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... 2005 A rich variety of techniques are nowadays available ( Hα ,HI, [NII], [SiII],CO, masers emission lines ...), together with higher signal-to-noise velocities and high spatial resolution. ...
Lesson 55 – The Structure of the Universe - science
Lesson 55 – The Structure of the Universe - science

... The brightness of the star varied in a particular way (see Figure 3) and in 1912 Miss Henrietta Leavitt of Harvard College observatory discovered an important connection between the period and brightness. This is now known as the period-luminosity relationship. Many other stars were found to vary in ...
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1. Introduction - Univerza v Ljubljani

... essence of the cooling process. Because of the viscous damping the technique is referred to as optical molasses. To make an example, the term kv amounts to ~10 MHz for   500 nm and v  1 m s , whereas the detuning can be of the order of  , tipically 100 MHz. Although it may seem that atoms can be ...
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... grow to ∼ 0.45M at the end of the red giant branch (RGB). What is the maximum radius the core can have for the total energy to be smaller than the energy of the Sun? (N.B. Ignore the envelope – why are you allowed to do this?) (c) For completely degenerate stars, one has R = 2.6 × ...
The Case against Copernicus
The Case against Copernicus

... be extremely far away. This in turn implies that they should be absurdly large—hun­ dreds of times bigger than the sun (bottom). Copernicans could not explain away the anomalous data without appeals to divine intervention. In reality, the stars are far away, but their apparent width is an illusion ...
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Astronomical spectroscopy



Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.
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