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1. The catalogue structure
1. The catalogue structure

... We have partially processed this enormous body of material. First of all, it is very useful to indicate the location of the constellations mentioned in Ptolemy’s star catalogue geometrically. Let us use a modern map that specifies constellation boundaries for this end. In fig. 2.1. these boundaries ...
THE MONTHLY SKY GUIDE, SIXTH EDITION
THE MONTHLY SKY GUIDE, SIXTH EDITION

... Most bright stars, and several not-so-bright ones, have strangesounding names. Other stars are known merely by letters and numbers. These designations arose in various ways, as follows. A number of star names date back to Greek and Roman times. For example, the name of the brightest star in the sky, ...
Stars - Emera Astronomy Center
Stars - Emera Astronomy Center

... Looking for fun and interesting space activities? The planetarium staff has prepared a collection of materials we call the Cosmic Classroom for you to use before and/or after your visit. These materials are entirely for use at your own discretion and are not intended to be required curricula or a pr ...
Setting Instruction
Setting Instruction

... • The constellation display includes the positions of 452 fixed stars with a brightness of the 4.0th magnitude or brighter, 119 major nebulae and star clusters, delimitation of constellations, and the ecliptic and the celestial equator based on their positions for the year 2000.0. (Maximum magnitude ...
High Precision Parallax Collecting Satellite
High Precision Parallax Collecting Satellite

... Many a night I saw the Pleiads, rising thro’ the mellow shade Glitter like a swarm of fireflies, tangled in a silver braid. ...
Eclipsing Binary Stars as Astrophysical Laboratories
Eclipsing Binary Stars as Astrophysical Laboratories

... close to each other, they are almost always in eclipse. Therefore, you get a kind of W-shape in the light curve. Figure 8 is what you might see if you were looking at the star system from only one hundred million miles away. They really are touching – kissing, so to speak, and sharing material betwe ...
A Walk through the Southern Sky: A Guide to Stars and
A Walk through the Southern Sky: A Guide to Stars and

... Rigel is actually thousands of times brighter than Sirius. It appears fainter because it is over a thousand light years away, while Sirius is only 81⁄2 light years from us. We measure the brightness of the stars as seen with the naked eye on a scale called the magnitude scale. Hipparchus, a Greek as ...
Star Trek ObservING List - Adirondack astronomy retreat
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... about 2.3 times Jupiter’s mass. It takes approximately 1.614 Earth years to orbit its star. The man who discovered this planet is named A. Hatzes, and this planet was officially announced on June 16th, 2006. This star sits 33.6 light years away from Earth. The star Beta Geminorum is slightly cooler ...
Gemini - www.BahaiStudies.net
Gemini - www.BahaiStudies.net

... To look at Gemini is to look away from the Milky Way; as a result, there are comparatively few deep-sky objects of note. The Eskimo Nebula and Medusa Nebula, Messier object M35, and Geminga are those that attract the most attention. The Eskimo and Medusa nebulae are both planetary nebulae, the one a ...
Test Ch. 27 Multiple Choice Identify the choice that best completes
Test Ch. 27 Multiple Choice Identify the choice that best completes

... 25. In the last stage of stellar evolution following a supernova, stars too massive to form neutron stars may form a A. black dwarf. B. red supergiant. C. white dwarf. D. black hole. 26. In which stage of stellar evolution does combined hydrogen fusion and helium fusion cause a star’s outer shell to ...
A Collection of Curricula for the STARLAB Polynesian Voyaging
A Collection of Curricula for the STARLAB Polynesian Voyaging

... Of the 88 constellations now recognized, 30 are north of the zodiac, 12 make up the zodiac (a band of constellations through which the sun and the planets appear to move across the sky), and 46 are south of the zodiac. The names of the constellations are written in Latin, long the language of scienc ...
chapter 24 instructor notes
chapter 24 instructor notes

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Devil physics The baddest class on campus IB Physics
Devil physics The baddest class on campus IB Physics

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Stars
Stars

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Nazwy gwiazd nieba północnego o etymologii arabskiej
Nazwy gwiazd nieba północnego o etymologii arabskiej

... 2.12.1 ALPHEKKA (Alpha Coronae Borealis)..........................................................24 2.12.2 NUSAKAN (Beta Coronae Borealis)..............................................................24 2.13 CYGNUS..................................................................................... ...
November News Letter - Boise Astronomical Society
November News Letter - Boise Astronomical Society

... stars below and right of the moon. However, above Orion’s body is his raised arm and club. The moon is located on top of his club and Orion is about to bat the moon with his club. Be sure to look for the horizontal row of three stars located in the middle of the rectangle of Orion’s body; this is Or ...
ASTRO-114--Lecture 38-
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... that on this scale? Well, the Sun is much, much, much brighter than anything else and so you’ve gotta go a whole bunch of magnitudes to get to it. Remember, every five numbers is a factor of 100 more in brightness. The Sun comes out as -26 on that scale. But think about that. I’m able to describe th ...
Planetary Nebula
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... What resemble dainty butterfly wings are actually roiling cauldrons of gas heated to more than 36,000 degrees Fahrenheit. The gas is tearing across space at more than 600,000 miles an hour -- fast enough to travel from Earth to the moon in 24 minutes! A dying star that was once about five times the ...
Science Grade 08 Unit 11 Exemplar Lesson 02: Classifying Stars
Science Grade 08 Unit 11 Exemplar Lesson 02: Classifying Stars

... Questions (previously distributed and affixed). 6. Project the Teacher Resource: PowerPoint: Galaxies and Stars, and discuss slides 7–9 with students. Instruct students to watch for underlined words or phrases as they continue to answer questions. Monitor students’ answers for accuracy as they compl ...
Spectral classification of O–M stars on the basis of UBV photometry
Spectral classification of O–M stars on the basis of UBV photometry

... the cases to be discussed below, when two spectral estimates Sp are equally possible for a star, it is necessary to use auxiliary data, for example, the probability of the star to be a cluster member. 3. Spectral classification of stars up to V = 13 − 14 mag in the directions of open clusters NGC 22 ...
Have You Seen Canopus Tonight?
Have You Seen Canopus Tonight?

... or possibly to a group of very bright giants or low luminosity supergiants, all stars in old age. (Its spectral class is variously given as A9 II or F0 Ib-II for those who understand stellar spectral types.) Estimates of its absolute magnitude (actual brightness or luminosity) give values of -5.5 ma ...
Next Generation Sunshine State Standards Chapter 24
Next Generation Sunshine State Standards Chapter 24

... sizes, temperatures, and distances, so their apparent brightnesses vary widely. Apparent Magnitude Stars have been classified according to their apparent brightness since at least the second century BC, when Hipparchus placed about 850 of them into six categories based on his ability to see differen ...
Curiosities of the Sky
Curiosities of the Sky

... most excellent photographs includes two of them, both in the star-cluster M8. The larger, which is roughly rectangular in outline, contains one little star, and its smaller neighbor is lune-shaped -surely a most singular form for such an object. Both are associated with curious dark lanes running th ...
ASTRONOMY 113 Laboratory Lab 5: Spectral Classification of the
ASTRONOMY 113 Laboratory Lab 5: Spectral Classification of the

... This permits us to study the relationships between fundamental stellar properties such as mass, surface temperature, and luminosity. One of the most famous star clusters is the Pleiades cluster. Located in the constellation Taurus, it is easily visible to the naked eye high in the winter skies. To t ...
PowerPoint Presentation - 16. Properties of Stars
PowerPoint Presentation - 16. Properties of Stars

... • A star’s most important property is its mass, which determines its luminosity and spectral type at each stage of its life. • What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see distinctly. An eclipsing binary reveals its binary nat ...
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Canis Major

Canis Major /ˌkeɪnɨs ˈmeɪdʒər/ is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy's 48 constellations, and is counted among the 88 modern constellations. Its name is Latin for ""greater dog"" in contrast to Canis Minor, the ""lesser dog""; both figures are commonly represented as following the constellation of Orion the hunter through the sky. The Milky Way passes through Canis Major and several open clusters lie within its borders, most notably M41.Canis Major contains Sirius, the brightest star in the night sky, known as the ""dog star"". It is bright because of its proximity to our Solar System. In contrast, the other bright stars of the constellation are stars of great distance and high luminosity. At magnitude 1.5, Epsilon Canis Majoris (Adhara) is the second brightest star of the constellation and the brightest source of extreme ultraviolet radiation in the night sky. Next in brightness are the yellow-white supergiant Delta (Wezen) at 1.8, the blue-white giant Beta (Mirzam) at 2.0, blue-white supergiants Eta (Aludra) at 2.4 and Omicron1 at 3.0, and white spectroscopic binary Zeta (Furud), also at 3.0. The red hypergiant VY Canis Majoris is one of the largest stars known, while the neutron star RX J0720.4-3125 has a radius of a mere 5 km.
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