30-1
... _____ 12. In the Northern Hemisphere, circumpolar stars appear a. to be extremely distant. b. to circle the sun. c. to circle Polaris, the North Star. d. to circle Mars and Venus. 13. What is the Doppler effect? _______________________________________________________________ ________________________ ...
... _____ 12. In the Northern Hemisphere, circumpolar stars appear a. to be extremely distant. b. to circle the sun. c. to circle Polaris, the North Star. d. to circle Mars and Venus. 13. What is the Doppler effect? _______________________________________________________________ ________________________ ...
H-R Diagrams
... protostar determines: – how long the protostar phase will last – where the new-born star will show up on the Main Sequence – i.e., what spectral type the star will have while on the main sequence ...
... protostar determines: – how long the protostar phase will last – where the new-born star will show up on the Main Sequence – i.e., what spectral type the star will have while on the main sequence ...
ReviewQuestionsForClass
... What are the different astronomical objects? Comets, nebulae, main sequence stars, red giants, white dwarves, planetary nebulae, binary stars, quasars, pulsars, neutron stars, black holes, galaxies, variable stars? What happens if a star changes position on an HR diagram? (up, down, left, right, dia ...
... What are the different astronomical objects? Comets, nebulae, main sequence stars, red giants, white dwarves, planetary nebulae, binary stars, quasars, pulsars, neutron stars, black holes, galaxies, variable stars? What happens if a star changes position on an HR diagram? (up, down, left, right, dia ...
STAR SYTEMS AND GALAXIES
... • In a binary system usually one star is much brighter than the other. • We can detect binary systems easily if one star blocks another, called an eclipsing binary. • We have found planets moving around stars in other systems. We can only detect very large planets because the planets must have enoug ...
... • In a binary system usually one star is much brighter than the other. • We can detect binary systems easily if one star blocks another, called an eclipsing binary. • We have found planets moving around stars in other systems. We can only detect very large planets because the planets must have enoug ...
School Supplies - Rowan County Schools
... Our solar system is located on the ___________ Arm – 30,000 light years from the center. Part of the __________ _________ of super clusters (Andromeda is also part of this group) Astronomers use __________ and _____________ telescopes to “see” the center of the galaxy We can’t actually “see” ...
... Our solar system is located on the ___________ Arm – 30,000 light years from the center. Part of the __________ _________ of super clusters (Andromeda is also part of this group) Astronomers use __________ and _____________ telescopes to “see” the center of the galaxy We can’t actually “see” ...
Galaxy Zoo: Pre and post‐workshop information
... distance of distant galaxies i.e. more distant galaxies are receding faster. The gradient of this graph is called H0 (Hubble’s constant), this gives the time since the Big Bang i.e. the age of the universe. The most accurate value for the Hubble constant has been determined using a different techniqu ...
... distance of distant galaxies i.e. more distant galaxies are receding faster. The gradient of this graph is called H0 (Hubble’s constant), this gives the time since the Big Bang i.e. the age of the universe. The most accurate value for the Hubble constant has been determined using a different techniqu ...
pptx
... Imagine that you find a star with an unknown distance, but you notice that it has a distinctive characteristic that tells you that it is a specific type of star. And let’s imagine that all stars of that type have the same luminosity, and you happen to know the value of that luminosity. You can then ...
... Imagine that you find a star with an unknown distance, but you notice that it has a distinctive characteristic that tells you that it is a specific type of star. And let’s imagine that all stars of that type have the same luminosity, and you happen to know the value of that luminosity. You can then ...
stars and constellations
... Because of parallax, it seems that the star moved, when compared to far away stars, but it did not actually do so. The smaller the parallax, the farther away the star is. Magnitude ~ This is how bright something appears. ...
... Because of parallax, it seems that the star moved, when compared to far away stars, but it did not actually do so. The smaller the parallax, the farther away the star is. Magnitude ~ This is how bright something appears. ...
Stars
... size of the orbits yield the sum of the masses, while the relative distance of each star from the center of mass yields the ratio of the masses. •The ratio and sum provide each mass individually. ...
... size of the orbits yield the sum of the masses, while the relative distance of each star from the center of mass yields the ratio of the masses. •The ratio and sum provide each mass individually. ...
a 03 Scale and Comparing Planets to Stars ppt
... • The Andromeda Galaxy is 2.2 million light years away from Earth. • This Means that the light we see from Andromeda Galaxy left there 2.2 million years ago. • It is therefore very possible that some of the stars in Andromeda have exploded as a supernova or gone out long ago. The message of these st ...
... • The Andromeda Galaxy is 2.2 million light years away from Earth. • This Means that the light we see from Andromeda Galaxy left there 2.2 million years ago. • It is therefore very possible that some of the stars in Andromeda have exploded as a supernova or gone out long ago. The message of these st ...
AST1100 Lecture Notes
... Several stars show periodic changes in their apparent magnitudes. This was first thought to be caused by dark spots on a rotating star’s surface: When the dark spots were turned towards us, the star appeared fainter, when the spots were turned away from us, the star appeared brighter. Today we know ...
... Several stars show periodic changes in their apparent magnitudes. This was first thought to be caused by dark spots on a rotating star’s surface: When the dark spots were turned towards us, the star appeared fainter, when the spots were turned away from us, the star appeared brighter. Today we know ...
ASTR1010 – Lecture 2 - University of Colorado Boulder
... syllabus! Reading happens before topics are presented in class • Read TCP1 for Thurs; skim TCP2 • Sample Ch1 reading quiz questions: – About how old is the universe? – What is the ecliptic plane? – Which is larger, 1 AU or 1 light-year? – What’s the expected workload, according to the syllabus ...
... syllabus! Reading happens before topics are presented in class • Read TCP1 for Thurs; skim TCP2 • Sample Ch1 reading quiz questions: – About how old is the universe? – What is the ecliptic plane? – Which is larger, 1 AU or 1 light-year? – What’s the expected workload, according to the syllabus ...
Measuring the diameter of our star teacher notes
... Two small lumps of ‘Blutak’ or similar adhesive putty Short ruler Sunny day It’s difficult to do practical astronomy at school during the day but this simple exercise can result in surprisingly good results. It is a good idea to run a competition for the closest result. It is probably best to have t ...
... Two small lumps of ‘Blutak’ or similar adhesive putty Short ruler Sunny day It’s difficult to do practical astronomy at school during the day but this simple exercise can result in surprisingly good results. It is a good idea to run a competition for the closest result. It is probably best to have t ...
eclipsing binaries in open clusters
... coefficients perturbed – Diagram shows the parameter correlations for which the spectroscopic light ratio was needed to avoid – Munari uncertainties underestimated ...
... coefficients perturbed – Diagram shows the parameter correlations for which the spectroscopic light ratio was needed to avoid – Munari uncertainties underestimated ...
Hubble`s Expansion of the Universe
... Galaxies were first identified in the 17th Century by the French astronomer Charles Messier, although at the time, he did not know what they were. Messier, a keen observer of comets, spotted a number of other fuzzy objects in the sky which he knew were not comets. Worried that other comet hunters mi ...
... Galaxies were first identified in the 17th Century by the French astronomer Charles Messier, although at the time, he did not know what they were. Messier, a keen observer of comets, spotted a number of other fuzzy objects in the sky which he knew were not comets. Worried that other comet hunters mi ...
NAME
... a. they are moving away from us b. they contain mostly ionized hydrogen gas c. they contain mostly old stars d. they contain lots of dust e. they contain a mix of old and young stars ____ 12. The disks of spiral galaxies appear blue because: a. they are moving toward us b. they contain a relatively ...
... a. they are moving away from us b. they contain mostly ionized hydrogen gas c. they contain mostly old stars d. they contain lots of dust e. they contain a mix of old and young stars ____ 12. The disks of spiral galaxies appear blue because: a. they are moving toward us b. they contain a relatively ...
May 2017 - What`s Out Tonight?
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
Star - Uplift Education
... white dwarf compared to a main sequence star: • has smaller radius • more dense • higher surface temperature • energy not produced by nuclear fusion LQ = sun luminosity = 3.839 × 1026 W ...
... white dwarf compared to a main sequence star: • has smaller radius • more dense • higher surface temperature • energy not produced by nuclear fusion LQ = sun luminosity = 3.839 × 1026 W ...
Types of Stars
... • A nebula is a large cloud of gas and dust spread out over a large volume of space. • Some nebulas are glowing clouds lit from within by bright stars. • A star is formed when a contacting cloud of gas and dust becomes so dense and hot that ...
... • A nebula is a large cloud of gas and dust spread out over a large volume of space. • Some nebulas are glowing clouds lit from within by bright stars. • A star is formed when a contacting cloud of gas and dust becomes so dense and hot that ...
AST1100 Lecture Notes
... Several stars show periodic changes in their apparent magnitudes. This was first thought to be caused by dark spots on a rotating star’s surface: When the dark spots were turned towards us, the star appeared fainter, when the spots were turned away from us, the star appeared brighter. Today we know ...
... Several stars show periodic changes in their apparent magnitudes. This was first thought to be caused by dark spots on a rotating star’s surface: When the dark spots were turned towards us, the star appeared fainter, when the spots were turned away from us, the star appeared brighter. Today we know ...
Integrative Studies 410 Our Place in the Universe
... Example: Parcel of the Earth • The land area of the earth is divided up into equal parcels for each person on earth. How ...
... Example: Parcel of the Earth • The land area of the earth is divided up into equal parcels for each person on earth. How ...
ASTR 1101-001 Spring 2008 - Louisiana State University
... Gustav’s Effect on this Course • Fall Holiday has been cancelled, which means our class will meet on Thursday, 9 October. (This makes up for one class day lost to Gustav last week.) • We will hold an additional makeup class on Saturday, 20 September! (This will account for the second class day lost ...
... Gustav’s Effect on this Course • Fall Holiday has been cancelled, which means our class will meet on Thursday, 9 October. (This makes up for one class day lost to Gustav last week.) • We will hold an additional makeup class on Saturday, 20 September! (This will account for the second class day lost ...
Chapter 10- Stars, Galaxies and the Universe
... ____ 10. A supernova is the explosion of a dying a. medium-mass star. b. high-mass star. c. protostar. d. low-mass star. ____ 11. From the cosmic background radiation, scientists can infer that, just after the big bang, the universe must have been a. very small. b. hot. c. the same average temperatu ...
... ____ 10. A supernova is the explosion of a dying a. medium-mass star. b. high-mass star. c. protostar. d. low-mass star. ____ 11. From the cosmic background radiation, scientists can infer that, just after the big bang, the universe must have been a. very small. b. hot. c. the same average temperatu ...
Constellations
... Asterism: Smaller groups of stars that form patterns within a constellation, from the Greek word aster, meaning star ...
... Asterism: Smaller groups of stars that form patterns within a constellation, from the Greek word aster, meaning star ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.