HERE
... lifespan,burn-rate, size: Spectral class O, B stars (rare, but very interesting): Giant, hot, bright, blue stars burn up quickly and die violently. Lifetime is only 1-10 million years. Spectral class A,F,G,K stars (like the Sun): Middle of the road habits. Orange, yellow or white in color. Typic ...
... lifespan,burn-rate, size: Spectral class O, B stars (rare, but very interesting): Giant, hot, bright, blue stars burn up quickly and die violently. Lifetime is only 1-10 million years. Spectral class A,F,G,K stars (like the Sun): Middle of the road habits. Orange, yellow or white in color. Typic ...
A Dart Board for the Bored An eye opening offer from the editors of
... and also to help thicken the WASP. I have chosen to make one myself because I suspect that such a long focal length is ideal for lunar and planetary photography without the complex arrangements of eyepiece projection and afocal photography, In my case, the primary mirror is of 8" aperture and has a ...
... and also to help thicken the WASP. I have chosen to make one myself because I suspect that such a long focal length is ideal for lunar and planetary photography without the complex arrangements of eyepiece projection and afocal photography, In my case, the primary mirror is of 8" aperture and has a ...
Chapter 02
... appear to be close to one another Usually, this is only a projection effect. The stars of a constellation may be located at very different distances from us. An asterism is a part of a constellation. (The Big Dipper is part of Ursa Major) ...
... appear to be close to one another Usually, this is only a projection effect. The stars of a constellation may be located at very different distances from us. An asterism is a part of a constellation. (The Big Dipper is part of Ursa Major) ...
Where to begin the adventure with variable stars?
... because they belong to constellations that are visible all year round in the northern hemisphere. They are located in relation to one another in the following way: ...
... because they belong to constellations that are visible all year round in the northern hemisphere. They are located in relation to one another in the following way: ...
Hertzsprung-Russell Diagrams and Distance to Stars
... two bands, B − V (B minus V ), was called the B-V color index. Hot stars have a negative index and cooler stars a positive index since in the magnitude system, fainter measurements have greater magnitudes. The B-V color index depends only on a star’s Temperature. Modern astronomers use two other sys ...
... two bands, B − V (B minus V ), was called the B-V color index. Hot stars have a negative index and cooler stars a positive index since in the magnitude system, fainter measurements have greater magnitudes. The B-V color index depends only on a star’s Temperature. Modern astronomers use two other sys ...
The Marathon
... As soon as it is possible to see the guide stars for the first objects, begin looking for the first objects. As darkness begins to prevail over twilight, the first objects must be hunted quickly. Do not linger over them, as they will be difficult to find and see at best. The first hour of observing ...
... As soon as it is possible to see the guide stars for the first objects, begin looking for the first objects. As darkness begins to prevail over twilight, the first objects must be hunted quickly. Do not linger over them, as they will be difficult to find and see at best. The first hour of observing ...
Right Ascension and Declination
... Declination is the astronomical equivalent of latitude. Declination is an angular distance of a point north or south of the Celestial Equator, a projection of the Earth’s equator into space. Declination is measured in degrees from -90° to +90°. • Celestial South Pole = -90° declination • Celestial E ...
... Declination is the astronomical equivalent of latitude. Declination is an angular distance of a point north or south of the Celestial Equator, a projection of the Earth’s equator into space. Declination is measured in degrees from -90° to +90°. • Celestial South Pole = -90° declination • Celestial E ...
Star`s ReadingStar`s Reading(es)
... Imagine you could travel to the stars at the speed of light. To travel from Earth to the sun would take about 8 minutes, not very long for such a long trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much fart ...
... Imagine you could travel to the stars at the speed of light. To travel from Earth to the sun would take about 8 minutes, not very long for such a long trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much fart ...
Ages of Star Clusters - Indiana University Astronomy
... Massive stars burn their nuclear fuel faster than lower mass stars and leave the main sequence sooner. In a cluster in which all the stars formed at the same time, the stars “peel off” the main sequence from the top, leaving only progressively less and less massive stars remaining on the main sequen ...
... Massive stars burn their nuclear fuel faster than lower mass stars and leave the main sequence sooner. In a cluster in which all the stars formed at the same time, the stars “peel off” the main sequence from the top, leaving only progressively less and less massive stars remaining on the main sequen ...
Print Activity - Let`s Talk Science
... 7. You’ve found the North Star! If you face towards the North Star, you will be facing north. What’s happening? A constellation is a group of stars in the sky that form a fixed pattern in relation to each other, as viewed from the Earth. Astronomers currently recognize 88 constellations in the North ...
... 7. You’ve found the North Star! If you face towards the North Star, you will be facing north. What’s happening? A constellation is a group of stars in the sky that form a fixed pattern in relation to each other, as viewed from the Earth. Astronomers currently recognize 88 constellations in the North ...
HR Diagram Lab
... Purpose: In this lab we will investigate the relationship between the temperature, brightness and diameter of stars. Introduction The H-R Diagram is a tool that astronomers use to classify stars based on their luminosity, magnitude, temperature, spectral class and evolutionary stage. The H-R Diagram ...
... Purpose: In this lab we will investigate the relationship between the temperature, brightness and diameter of stars. Introduction The H-R Diagram is a tool that astronomers use to classify stars based on their luminosity, magnitude, temperature, spectral class and evolutionary stage. The H-R Diagram ...
Astronomical Toolkit
... faint stars that just happen to lie very close to us. When observing, we are forced to stay on Earth or nearby and can only measure the intensity of the light that reaches us. Unfortunately this does not immediately tell us anything about a star’s internal properties. If we want to know more about a ...
... faint stars that just happen to lie very close to us. When observing, we are forced to stay on Earth or nearby and can only measure the intensity of the light that reaches us. Unfortunately this does not immediately tell us anything about a star’s internal properties. If we want to know more about a ...
Stars Chapter 21
... light from a distant star into its characteristic color • SPECTRUM: the band of colors that forms as light passes through a prism • Used to see if galaxies are moving away or toward the earth ...
... light from a distant star into its characteristic color • SPECTRUM: the band of colors that forms as light passes through a prism • Used to see if galaxies are moving away or toward the earth ...
Spectral analysis for the RV Tau star R Sct: In this section, we will
... have luminosity classes of III, II, or I (where class II has properties in between III and I). Luminosity class V stars, like the sun, are main sequence stars and are generally used for reference as they do not vary and their intrinsic properties are well known. “By eye” we can see that the blue spe ...
... have luminosity classes of III, II, or I (where class II has properties in between III and I). Luminosity class V stars, like the sun, are main sequence stars and are generally used for reference as they do not vary and their intrinsic properties are well known. “By eye” we can see that the blue spe ...
Chapter 8 - TeacherWeb
... Light year is the distance light travels in one year. Parallax: an apparent shift in the position of an object when viewed from different locations. The Earth moves. Astronomers must use math to figure out the actual distance. Closer stars seem to move more than distant stars. The earth faces differ ...
... Light year is the distance light travels in one year. Parallax: an apparent shift in the position of an object when viewed from different locations. The Earth moves. Astronomers must use math to figure out the actual distance. Closer stars seem to move more than distant stars. The earth faces differ ...
HR Diagram Activity - Mr. Alster`s Science Classes
... Purpose: In this lab we will investigate the relationship between the temperature, brightness and diameter of stars. Introduction The H-R Diagram is a tool that astronomers use to classify stars based on their luminosity, magnitude, temperature, spectral class and evolutionary stage. The H-R Diagram ...
... Purpose: In this lab we will investigate the relationship between the temperature, brightness and diameter of stars. Introduction The H-R Diagram is a tool that astronomers use to classify stars based on their luminosity, magnitude, temperature, spectral class and evolutionary stage. The H-R Diagram ...
April 2012 Signs in the Spotlight: Aries, Gemini, Virgo
... activity. Let’s look now at some things that are happening in the heavens now and in the near future. Spring Forward, Jump Back Despite an early spring for much of North America, we may feel more sluggish than usual in our spring awakening as Mars rd has been Retrograde (appearing to move backward i ...
... activity. Let’s look now at some things that are happening in the heavens now and in the near future. Spring Forward, Jump Back Despite an early spring for much of North America, we may feel more sluggish than usual in our spring awakening as Mars rd has been Retrograde (appearing to move backward i ...
H-R Diagram Lab
... information about them. Together, they created a diagram on which they mapped stars by magnitude and spectral class. After the astronomers had completed graphing the stars, they noticed that several patterns appeared. First, they noticed that ninety per cent of the stars fell along a diagonal line f ...
... information about them. Together, they created a diagram on which they mapped stars by magnitude and spectral class. After the astronomers had completed graphing the stars, they noticed that several patterns appeared. First, they noticed that ninety per cent of the stars fell along a diagonal line f ...
Types of Stars
... • Astronomers have developed various methods of determining the distance of stars. • The change in position of an object with respect to a distant background is called parallax. • As Earth moves in its orbit, astronomers are able to observe stars from two different positions. • Astronomers measure t ...
... • Astronomers have developed various methods of determining the distance of stars. • The change in position of an object with respect to a distant background is called parallax. • As Earth moves in its orbit, astronomers are able to observe stars from two different positions. • Astronomers measure t ...
The Milky Way Galaxy
... • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is moving through space. ...
... • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is moving through space. ...
Activity: Stellar Evolution Scavenger Hunt - Chandra X
... moderately massive stars. Intervening dust from the Milky Way's disk slightly obscures our view, dimming the pair's overall brightness by about a factor of five. The two clusters (known as NGC 884 and NGC 869) are strikingly similar in many ways and are believed to have originated from a single ance ...
... moderately massive stars. Intervening dust from the Milky Way's disk slightly obscures our view, dimming the pair's overall brightness by about a factor of five. The two clusters (known as NGC 884 and NGC 869) are strikingly similar in many ways and are believed to have originated from a single ance ...
Document
... There's too much dust to see the distant stars. The Universe has only a finite number of stars. The distribution of stars is not uniform. So, for example, there could be an infinity of stars, but they hide behind one another so that only a finite angular area is subtended by them. The Universe is ex ...
... There's too much dust to see the distant stars. The Universe has only a finite number of stars. The distribution of stars is not uniform. So, for example, there could be an infinity of stars, but they hide behind one another so that only a finite angular area is subtended by them. The Universe is ex ...
Life Cycle of Stars
... Is a barred spiral galaxy with two spiral arms. The central bulge is a huge collection of old stars. It is surrounded by spinning disc of newer stars and clumps of gas and dust. Our solar system is located on the inner edge of one of the spiral arms. A massive black hole is located at the cent ...
... Is a barred spiral galaxy with two spiral arms. The central bulge is a huge collection of old stars. It is surrounded by spinning disc of newer stars and clumps of gas and dust. Our solar system is located on the inner edge of one of the spiral arms. A massive black hole is located at the cent ...
Astronomy Unit Period
... d. age _________________________12. Astronomers use numbers to describe a star’s brightness. The larger the number, the ___ the star. _________________________ 13. How bright a star appears as seen from Earth is called ___ . _________________________ 14. How bright a star actually is at a distance o ...
... d. age _________________________12. Astronomers use numbers to describe a star’s brightness. The larger the number, the ___ the star. _________________________ 13. How bright a star appears as seen from Earth is called ___ . _________________________ 14. How bright a star actually is at a distance o ...
Aries (constellation)
Aries is one of the constellations of the zodiac. It is located in the northern celestial hemisphere between Pisces to the west and Taurus to the east. The name Aries is Latin for ram, and its symbol is 20px (Unicode ♈), representing a ram's horns. It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation, ranking 39th overall size, with an area of 441 square degrees (1.1% of the celestial sphere).Although Aries came to represent specifically the ram whose fleece became the Golden Fleece of Ancient Greek mythology, it has represented a ram since late Babylonian times. Before that, the stars of Aries formed a farmhand. Different cultures have incorporated the stars of Aries into different constellations including twin inspectors in China and a porpoise in the Marshall Islands. Aries is a relatively dim constellation, possessing only four bright stars: Hamal (Alpha Arietis, second magnitude), Sheratan (Beta Arietis, third magnitude), Mesarthim (Gamma Arietis, fourth magnitude), and 41 Arietis (also fourth magnitude). The few deep-sky objects within the constellation are quite faint and include several pairs of interacting galaxies. Several meteor showers appear to radiate from Aries, including the Daytime Arietids and the Epsilon Arietids.