Highlights of the Month - Bridgend Astronomical Society
... observation in a small telescope as Mizar is then shown to be an easily resolved double star. A fainter reddish star forms a triangle with Alcor and Mizar. Ursa Major contains many interesting "deep sky" objects. The brightest, listed in Messier's Catalogue, are shown on the chart, but there are man ...
... observation in a small telescope as Mizar is then shown to be an easily resolved double star. A fainter reddish star forms a triangle with Alcor and Mizar. Ursa Major contains many interesting "deep sky" objects. The brightest, listed in Messier's Catalogue, are shown on the chart, but there are man ...
The Night Sky May 2016 - Bridgend Astronomical Society
... Another, and very beautiful, galaxy is M101 which looks rather like a pinwheel firework, hence its other name the Pinwheel Galaxy. It was discovered in1781 and was a late entry to Messier's catalogue of nebulous objects. It is a type Sc spiral galaxy seen face on which is at a distance of about 24 m ...
... Another, and very beautiful, galaxy is M101 which looks rather like a pinwheel firework, hence its other name the Pinwheel Galaxy. It was discovered in1781 and was a late entry to Messier's catalogue of nebulous objects. It is a type Sc spiral galaxy seen face on which is at a distance of about 24 m ...
Sky Watching Talk
... of stars all in roughly the same direction from Earth, BUT …. Each has its own different distance from the Earth – Therefore, NOT grouped together is space ...
... of stars all in roughly the same direction from Earth, BUT …. Each has its own different distance from the Earth – Therefore, NOT grouped together is space ...
No Slide Title
... Thus, if I know two stars have the same luminosity but one is four times fainter than the other, I know the faint star is twice as far away from me. ...
... Thus, if I know two stars have the same luminosity but one is four times fainter than the other, I know the faint star is twice as far away from me. ...
main sequence star
... • The outer gases are lost, which allows us to see the core of the star. The white dwarf is very dense and hot. The emit (release) less light than they did when they were stars. • As these white dwarfs cool they become fainter. • When there is no more energy being emitted (released), they are called ...
... • The outer gases are lost, which allows us to see the core of the star. The white dwarf is very dense and hot. The emit (release) less light than they did when they were stars. • As these white dwarfs cool they become fainter. • When there is no more energy being emitted (released), they are called ...
File - Mr. Goodyear Astronomy
... Stage 6 Planetary Nebula / Nova - star uses up most of He and moves back toward main sequence area of H-R diagram. - Star fluctuates on and off main sequence. Gravity tries to contact star creating other elements in star increasing fusion process. - This increase energy causes an explosion-like occ ...
... Stage 6 Planetary Nebula / Nova - star uses up most of He and moves back toward main sequence area of H-R diagram. - Star fluctuates on and off main sequence. Gravity tries to contact star creating other elements in star increasing fusion process. - This increase energy causes an explosion-like occ ...
Using a Planisphere - Amateur Observers` Society of New York
... Use the planisphere to plan your night of observing. You won’t find M13, the compact globular cluster in Hercules, at 8 PM on January 1st, but you will easily find M45, the spectacular open cluster in Taurus. Set your planisphere for the correct date and time using your red flashlight so your eyes s ...
... Use the planisphere to plan your night of observing. You won’t find M13, the compact globular cluster in Hercules, at 8 PM on January 1st, but you will easily find M45, the spectacular open cluster in Taurus. Set your planisphere for the correct date and time using your red flashlight so your eyes s ...
The Earth`s Orbit and Season Demonstration
... 3. Looking at the Sun notice the constellation directly across from the Sun, Gemini. On June 21 when the Sun appears in the constellation Gemini this is the first day of summer. Rotate the earth on its axis until North America is directly opposite the sun, midnight. Notice the constellation directly ...
... 3. Looking at the Sun notice the constellation directly across from the Sun, Gemini. On June 21 when the Sun appears in the constellation Gemini this is the first day of summer. Rotate the earth on its axis until North America is directly opposite the sun, midnight. Notice the constellation directly ...
Milky Way
... how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are denoted by a roman numeral (V, III, I,…). ...
... how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are denoted by a roman numeral (V, III, I,…). ...
7a Properties of Stars.pptx
... • Parallax – basic way to measure distance – Stars posi7ons appear to shi^ based on season – Smallest angle shi^ = farther away – Largest angle shi^ = closest ...
... • Parallax – basic way to measure distance – Stars posi7ons appear to shi^ based on season – Smallest angle shi^ = farther away – Largest angle shi^ = closest ...
The Sun . . .
... Main Sequence: Average, ordinary stars. ~ 90% of stars are main sequence. Supergiant: 20 to 200 times larger than the Sun, but also much brighter, cooler and less dense. Dwarf: Small stars; fairly hot but very dim. Diameter is about the same as Earth, but their mass is equal to the sun . . . ...
... Main Sequence: Average, ordinary stars. ~ 90% of stars are main sequence. Supergiant: 20 to 200 times larger than the Sun, but also much brighter, cooler and less dense. Dwarf: Small stars; fairly hot but very dim. Diameter is about the same as Earth, but their mass is equal to the sun . . . ...
PHYS 2410 General Astronomy Homework 1
... 10. ___________ is the brightest star in the constellation of Ursa Majoris. ...
... 10. ___________ is the brightest star in the constellation of Ursa Majoris. ...
Ast 405, Pulsating Stars The following is based Chapter 14 of the
... • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysi ...
... • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysi ...
+(J - cloudfront.net
... The radius RoftheSun is 7.0 x 108 m.Use your answers in (c) to deduce that the radius of Antares is about 500 R. ...
... The radius RoftheSun is 7.0 x 108 m.Use your answers in (c) to deduce that the radius of Antares is about 500 R. ...
29.2 Measuring the Stars - Mr. Tobin`s Earth Science Class
... • Size of Earth, but has a mass same as the Sun. ...
... • Size of Earth, but has a mass same as the Sun. ...
White Dwarf star. Are
... of energy, it is finished. Our sun will run out of energy and it will be finished too. But this will not happen for another 5 billion years! ...
... of energy, it is finished. Our sun will run out of energy and it will be finished too. But this will not happen for another 5 billion years! ...
Tools of Modern Astronomy Slide Show
... 1. A light year is a unit of ______ and is the distance light travels in one year. Light travels at a rate of _________ and travels 1.5 x 1015 m/year. At that speed light travels almost 6 trillion miles in one _____! 2. It takes light from the Sun about ___ minutes to reach the Earth. It takes light ...
... 1. A light year is a unit of ______ and is the distance light travels in one year. Light travels at a rate of _________ and travels 1.5 x 1015 m/year. At that speed light travels almost 6 trillion miles in one _____! 2. It takes light from the Sun about ___ minutes to reach the Earth. It takes light ...
Review Questions for Chp 2
... type of electromagnetic radiation is it? 46. Define circumpolar stars and give one example of a circumpolar star. 47. How many types of electromagnetic radiation are there? 48. What was Newton’s most important contribution to astronomy? 49. Give an example of what Doppler radar is used for on Earth. ...
... type of electromagnetic radiation is it? 46. Define circumpolar stars and give one example of a circumpolar star. 47. How many types of electromagnetic radiation are there? 48. What was Newton’s most important contribution to astronomy? 49. Give an example of what Doppler radar is used for on Earth. ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.