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H-R Diagram
H-R Diagram

... the outer layers of the star, all that is left is the central core. The core now contains a mass between 1.4 and 3.0 times the sun's mass but condensed into a volume 10- to 20km across - roughly the size of a small town on Earth. The matter in a neutron star would be incredible to behold. It is thou ...
STAAR Review – Week Ten
STAAR Review – Week Ten

... a. Stars with greater magnitudes tend to have lower temperatures. b. Stars with greater masses tend to have lower temperatures. c. Stars with greater magnitudes tend to have higher temperatures. d. Stars with greater temperatures tend to have lower magnitudes. 19. What do our Sun and the star Vega h ...
Exam2 Review Slides
Exam2 Review Slides

Making Visual Estimates
Making Visual Estimates

Starlight & Stars - Wayne State University Physics and Astronomy
Starlight & Stars - Wayne State University Physics and Astronomy

... The Doppler effect doesn’t affect the overall color of an object, unless it is moving at a significant fraction of the speed of light (VERY fast!) For an object moving toward us, the red colors will be shifted to the orange and the near-infrared will be shifted to the red, etc. All of the colors shi ...
LIFE CYCLE OF STARS
LIFE CYCLE OF STARS

... A Star’s Old Age to Death Medium Stars  Cool at the end of the Red Giant stage faster than larger stars, so they begin to shed its gases outside its core forming a planetary nebula .  The center of the small star then begins to cool to become a white dwarf and cools more to become a black dwarf. ...
Theoretical Problem 3
Theoretical Problem 3

... the ratio of mass M to radius R is the same and depends only on physical constants. Find the equation for the ratio M / R for stars fusing hydrogen. ...
common constellations
common constellations

... Members of the Underground Railroad were fully aware of the predicament of fleeing slaves. About 1831 the Railroad began to send travelers into the South to secretly teach slaves specific routes they could navigate using Polaris. By the beginning of the Civil War in 1861, about 500 people a year wer ...
How many planets are there in our solar system
How many planets are there in our solar system

... b. The hydrogen that makes up stars portrays a shift in the red part of its spectrum, showing that the stars are moving away from us c. Our planets our shifting to the red side of our galaxy because of gravity d. Female students in California wear red dresses to prom and do a dance called “The Shift ...
Binary Stars
Binary Stars

... there are two bright stars in the unresolved binary, there should be two sets of absorption lines, with different velocities. This is because at a given instant, one star is approaching, the other one receding. ...
Luminosity and brightness
Luminosity and brightness

... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
PHYS3380_102615_bw
PHYS3380_102615_bw

... We have observed disks around other stars. These could be new planetary systems in formation. ...
Astronomy 103 Final review session - Home | UW
Astronomy 103 Final review session - Home | UW

... Like stars, come in different masses and luminosities Three types - spiral, elliptical and irregular Galaxies are the basic building blocks of the universe ...
UNIT 3 INPUT 2: Notes on Black Holes (BH): Process of Formation
UNIT 3 INPUT 2: Notes on Black Holes (BH): Process of Formation

lifedeath - University of Glasgow
lifedeath - University of Glasgow

... Interior of a solar-type star ...
Wien`s Law and Temperature
Wien`s Law and Temperature

... the surface temperature of each of these stars. Be careful, real stars don’t have the perfect curves that were shown on the blackbody simulation. Fill in the table below for the temperature estimate for each star. If the peak wavelength is not on the spectra graph for the star, state whether it is o ...
Hungry Young Stars: A New Explanation for the FU Ori Outbursts
Hungry Young Stars: A New Explanation for the FU Ori Outbursts

... • We provide an explanation for the origin of FU Ori bursts. • A young star devours embryos that form in the disk, resulting in colossal bursts of luminosity. This process repeats as long as nebular material rains onto the disk. • The new feature in our model is the self-consistent formation and evo ...
Extreme Stars
Extreme Stars

Stellar Evolution Simulation
Stellar Evolution Simulation

doc - IAC
doc - IAC

... massive. They stand out because of their high luminosity. These stars can become a million times brighter than the Sun. Their masses can be measured dynamically, in the same way as planetary masses are measured. The most massive ones are 100 to 150 times heavier than the Sun. The most massive stars ...
New Stars, New Planets?
New Stars, New Planets?

November 2013 - Pomona Valley Amateur Astronomers
November 2013 - Pomona Valley Amateur Astronomers

... to cluster due to mutual gravitation. Clouds of dark matter would have surrounded the cluster of atoms since they rarely interact with matter. Eventually clusters of stars would appear. At the center of each cloud of stuff one large star would begin to accrete from its surroundings. The fusion of hy ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society

... The Kepler mission has discovered 11 new planetary systems hosting 26 confirmed planets. These discoveries nearly double the number of verified Kepler planets and triple the number of stars known to have more than one planet that transits (passes in front of) its host star. The planets orbit close t ...
Lecture
Lecture

... angle of binary systems is unknown  uncertainty in mass estimates ...
About the Universe The Universe is everything that exists, including
About the Universe The Universe is everything that exists, including

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Lyra



Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.
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