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nasafinal - University of Oregon
nasafinal - University of Oregon

... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
Astronomy of the Northern Sky—
Astronomy of the Northern Sky—

... Perseus and Cassiopeia, binoculars and small telescopes reveal a pair of star clusters, known as h and Chi (χ) Persei, or NGC 869/884, the Double Cluster (2:21 +57º 8’). Few star clusters are this beautiful and you should make this a target for a night-time stellar-evolution lesson any time it is vi ...
The Sun and Other Stars - Tuslaw Local School District
The Sun and Other Stars - Tuslaw Local School District

... - light travels at a speed of 186,000 mps (300,000km/s) - light travels about 6 trillion miles in 1 year - ( 9.5 million million kilometers) Parallax - the apparent motion of an object when viewed from 2 different points in space; can only measure distances to nearby stars ...
Astronomy 162 Lab 4: Stars
Astronomy 162 Lab 4: Stars

... properties you are actually trying to compare. Observational Astronomers tend to use an HR Diagram that plots Spectral Class (which is directly related to temperature) on the x-axis against Absolute Magnitude on the y-axis. From this diagram, astronomers can study the relationship between temperatu ...
Light from stars part II
Light from stars part II

... Apparent Magnitude mv (How bright stars appear) • Refined in the 19th Century when instruments became precise enough to accurately measure brightness • Modern scale is defined so that 6th magnitude stars are exactly 100 times brighter than 1st magnitude stars • This means stars that differ in magni ...
Level 6 Stars and Constellations
Level 6 Stars and Constellations

... If you observe a planet, say Mars, for one complete revolution, you will see that it passes successively through 12 constellations. All planets (except Pluto at certain times) can be observed only in these 12 constellations, which form the so-called zodiac, and the Sun also moves through the zodiaca ...
ReviewQuestionsForClass
ReviewQuestionsForClass

... Where are the red giants? White dwarfs? Why are they where they are on an HR diagram? How do size, temperature, and distance to a star affect its brightness? Which stars on the main sequence are the brightest? Hottest? Biggest? Bluest? Live the longest? What are the different astronomical objects? C ...
Astronomers classify stars according to their physical characteristics
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ASTRO 1050 The Structure of the Milky Way Galaxy
ASTRO 1050 The Structure of the Milky Way Galaxy

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Galaxies and the Universe
Galaxies and the Universe

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The Hertzsprung – Russell Diagram Star Data Table
The Hertzsprung – Russell Diagram Star Data Table

... Danish astronomer Ejnar Hertzsprung and American astronomer Henry Russell discovered a  relationship between the ​ brightness of a star​  and the ​ surface temperature ​ of a star.  The graph of  a star’s absolute magnitude versus its temperature is called an ​ ...
How Is a Star`s Color Related to Its Temperature?
How Is a Star`s Color Related to Its Temperature?

... On a clear night you have surely noticed that some stars are brighter than others. But stars also have different colors. Rigel is blue, and Betelgeuse is red. Capella and our sun are yellow. In this activity you will make your own Hertzsprung-Russell diagram. You will see how star brightness, color, ...
Life Cycle of Stars
Life Cycle of Stars

... • All the hydrogen has fused to helium. The Helium in the core of the star is still burning hot. Helium starts fusing together to create Carbon or Oxygen.Gravity keeps contracting the core to maintain equilibrium, and as the core contracts the atoms are packed together even tighter than before. The ...
Life Cycle of a Star notes
Life Cycle of a Star notes

... Gas pressure depends upon two things to maintain it: a very hot temperature (keep those atoms colliding!) and density (lots of atoms in a small space). There are two options for a protostar at this point: ...
Ch 3 Sec 1 Tools of modern astronomy
Ch 3 Sec 1 Tools of modern astronomy

... 1. The outer layer drifts away and may form a new nebula, and eventually be part of a new star 2. What’s left is smaller and denser than a dwarf. It’s called a neutron star. May be 3X as massive as our sum, but only 20 km across D. The biggest stars, more than 40X the sun, leave behind a black hole ...
star brightness
star brightness

... sons rea ny stars. There are ma These are called variable ...
11.3 Measuring Distances in Space
11.3 Measuring Distances in Space

... The distance to a far away object can be determined by measuring two angles and the distance between those two angles. A line (called a baseline) is laid out and angle measurements are taken at the baseline endpoints to the distant object. Geometry and Trigonometry are then used to determine the per ...
HNRS 227 Lecture #2 Chapters 2 and 3
HNRS 227 Lecture #2 Chapters 2 and 3

... Young star clusters give insight into star formation and evolution  Newborn stars may form an open or galactic cluster  Stars are held together in such a cluster by gravity  Occasionally a star moving more rapidly than average will escape, or leave the cluster  A stellar association is a group ...
Small Wonders: Andromeda
Small Wonders: Andromeda

... defense projects, was "stuck" working at Mt Wilson. Due to the wartime blackouts of Los Angeles, Baade was able to make good use of the blackest skies Mt. Wilson will probably ever see to resolve the individual stars throughout M31.Although these astronomers studied M31 with the most powerful telesc ...
D109-08x
D109-08x

... mean) that has served to create these knots of extreme star formation. Whatever the process, the purpose of the Chandra observations is to establish the presence of an extended X-ray component to D109 that would be a manifestation of global, starformation driven mass outflow on the dynamical mass sc ...
STARS Chapter 8 Section 1
STARS Chapter 8 Section 1

... What are stars made of? • Stars are made of gas. Hydrogen(H) and helium(He) are the two main elements that make up a star. • What is an element? • Stars also contain small amounts of other elements, such as carbon, nitrogen, and oxygen. Each star is made up of a different mix. • To find out what a ...
Stellar Evolution – Test Review Answers
Stellar Evolution – Test Review Answers

... the middle of the main sequence. 17. Where are giant stars, supergiant stars and white dwarfs found on the H-R diagram, relative to the main sequence? Giant and supergiant stars lie above the main sequence, while white dwarfs are below the main sequence. 18. What is the relationship between mass, lu ...
Introduction to Stars ppt
Introduction to Stars ppt

... luminosity, but still much brighter than main sequence stars of same spectral type. The hot, white, small radius stars near the lower left are called white dwarfs. Giants and Supergiants are stars nearing the ends of their lives because they have already exhausted their core hydrogen. Surprisingly, ...
The Life Cycle of a star
The Life Cycle of a star

... • A supernova can light up the sky for weeks. • The temperature in one can reach 1,000,000,000 °C. • The supernova then either becomes a neutron star or a black hole. ...
Chapter 15 Test Study Sheet
Chapter 15 Test Study Sheet

... a. Students know galaxies are clusters of billions of stars and may have different shapes.  Know how scientists can detect the presence of a planet around a distant star.  Know that there are three basic galaxy shapes.  Know that there are billions of galaxies with billions of stars.  Know that ...
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Serpens



Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.
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