All_Stars
... • Once their hydrogen is gone they contract and heat up, but the contraction and heating are halted by electron degeneracy pressure before helium fusion can ignite • They will slowly cool as helium white dwarf stars • The main-sequence lifetimes of these stars are longer than the age of the Universe ...
... • Once their hydrogen is gone they contract and heat up, but the contraction and heating are halted by electron degeneracy pressure before helium fusion can ignite • They will slowly cool as helium white dwarf stars • The main-sequence lifetimes of these stars are longer than the age of the Universe ...
Lecture 2 - Lines in the Sky
... Lines in the Sky • In order to use the sky to measure time you need to measure the location of objects in the sky. We will look at two methods of measuring locations in the sky. • Both methods require measuring angles. • These methods have long been used not only for timekeeping but for navigation a ...
... Lines in the Sky • In order to use the sky to measure time you need to measure the location of objects in the sky. We will look at two methods of measuring locations in the sky. • Both methods require measuring angles. • These methods have long been used not only for timekeeping but for navigation a ...
Galaxy - Bama.ua.edu
... • Recall Copernicus found relative distances of planets in solar system. • Copernicus calculated the sizes of the planets’ orbits RELATIVE to the Earth’s orbit size (1 AU). • But exactly how big is the Earth’s orbit and the solar system in miles or km? • To 1700’s AU very poorly known. ...
... • Recall Copernicus found relative distances of planets in solar system. • Copernicus calculated the sizes of the planets’ orbits RELATIVE to the Earth’s orbit size (1 AU). • But exactly how big is the Earth’s orbit and the solar system in miles or km? • To 1700’s AU very poorly known. ...
Stars PowerPoint
... – Although stars may appear to be close to each other, very few are gravitationally bound to one other. – By measuring distances to stars and observing how they interact with each other, scientists can determine which stars are gravitationally bound to each other. – A group of stars that are gravita ...
... – Although stars may appear to be close to each other, very few are gravitationally bound to one other. – By measuring distances to stars and observing how they interact with each other, scientists can determine which stars are gravitationally bound to each other. – A group of stars that are gravita ...
Distances of the Stars
... The smallest parallax measurable from the ground is about 0.01-arcsec • Measure distances out to ~100 pc • Get 10% distances only to a few parsecs. • But, only a few hundred stars this close ...
... The smallest parallax measurable from the ground is about 0.01-arcsec • Measure distances out to ~100 pc • Get 10% distances only to a few parsecs. • But, only a few hundred stars this close ...
Define the following terms in the space provided
... F) At what altitude would Polaris appear above the northern horizon? Polaris would appear above the northern horizon at 32° altitude. G) Would a star with a declination of +60 be circumpolar? Explain. A star with a declination of +60 be circumpolar. It would dip to 2° above the northern horizon. H ...
... F) At what altitude would Polaris appear above the northern horizon? Polaris would appear above the northern horizon at 32° altitude. G) Would a star with a declination of +60 be circumpolar? Explain. A star with a declination of +60 be circumpolar. It would dip to 2° above the northern horizon. H ...
Spying into the lives of the stars
... You don’t need to use capitalization or punctuation, and it doesn’t even have to rhyme! Each poem is only three lines long, with the following format: five syllables first seven syllables after five syllables last For example, i like science now (because we made things explode) let’s do it again You ...
... You don’t need to use capitalization or punctuation, and it doesn’t even have to rhyme! Each poem is only three lines long, with the following format: five syllables first seven syllables after five syllables last For example, i like science now (because we made things explode) let’s do it again You ...
Planetarium Key Points
... Using a motionless sphere we can define a great circle, the horizon, and its poles, zenit and nadir 2. The daily motion of the sphere All the sky moves from Est to West around an axis that seems fixed on the sphere (for short periods of time as human life) The motion and the sphere define two ...
... Using a motionless sphere we can define a great circle, the horizon, and its poles, zenit and nadir 2. The daily motion of the sphere All the sky moves from Est to West around an axis that seems fixed on the sphere (for short periods of time as human life) The motion and the sphere define two ...
Magnitude. . . ?
... reads that “the minor planet was of fifteenth brightness class”, i.e., that its faintness was approximately fifteen magnitudes, one understands that it was some one million times fainter than Vega, or than a fixed star of zero-th brightness class (fifteen is three times five, and the third power of ...
... reads that “the minor planet was of fifteenth brightness class”, i.e., that its faintness was approximately fifteen magnitudes, one understands that it was some one million times fainter than Vega, or than a fixed star of zero-th brightness class (fifteen is three times five, and the third power of ...
Galaxies and the Universe
... • Red galaxies have lots of red stars (both giants and main sequence). • Blue galaxies have both blue and red main sequence… but probably not a lot of red giants yet. – Blue MS are much more luminous than red MS so a population with both would appear mostly blue. ...
... • Red galaxies have lots of red stars (both giants and main sequence). • Blue galaxies have both blue and red main sequence… but probably not a lot of red giants yet. – Blue MS are much more luminous than red MS so a population with both would appear mostly blue. ...
Interactive Tutorial Activities in ASTR 310
... A) midnight B) 6:00 a.m. C) noon March 20 as seen by someone looking South from bigger than Earth’s orbit. Approximately how many explain why there are not eclipses every month D) Spring equinox E) Summer solstice Vancouver. Which is the Sun’s path on June 21? times further from Earth is Mars when t ...
... A) midnight B) 6:00 a.m. C) noon March 20 as seen by someone looking South from bigger than Earth’s orbit. Approximately how many explain why there are not eclipses every month D) Spring equinox E) Summer solstice Vancouver. Which is the Sun’s path on June 21? times further from Earth is Mars when t ...
level 1
... 5. Research how NASA and astronomers determine distances between planets, stars, and the Sun. Create an Infographic that clearly shows how they do it and what their assumptions are. How accurate are they? ...
... 5. Research how NASA and astronomers determine distances between planets, stars, and the Sun. Create an Infographic that clearly shows how they do it and what their assumptions are. How accurate are they? ...
October 2012 - astronomy for beginners
... The night sky is still dominated by the Summer Triangle. To see the Summer Triangle find a dark location away from any lights that will reduce your night vision and look towards the south. Almost overhead is Deneb the brightest star in the constellation of Cygnus (the Swan). Look towards the west (r ...
... The night sky is still dominated by the Summer Triangle. To see the Summer Triangle find a dark location away from any lights that will reduce your night vision and look towards the south. Almost overhead is Deneb the brightest star in the constellation of Cygnus (the Swan). Look towards the west (r ...
PARALLAX EXERCISE1 The goal of this exercise is to introduce the
... sky. They look completely different, and it was once believed that they were different types of objects. In fact, the Sun was once considered a planet! We now know the Sun is just another star, and the reason that the Sun appears different to us is that it is so much closer. Determining distances in ...
... sky. They look completely different, and it was once believed that they were different types of objects. In fact, the Sun was once considered a planet! We now know the Sun is just another star, and the reason that the Sun appears different to us is that it is so much closer. Determining distances in ...
Final Exam: Review Questions
... b. Parallax of Capella, having with a distance of 42 lyrs from Earth? 5. The star, Betelgeuse is one of the largest visible stars, red, and emits enormous amounts of light. a. Why is this star not especially bright? b. What type of star is it likely to be? (i.e. intermediate mass main sequence, high ...
... b. Parallax of Capella, having with a distance of 42 lyrs from Earth? 5. The star, Betelgeuse is one of the largest visible stars, red, and emits enormous amounts of light. a. Why is this star not especially bright? b. What type of star is it likely to be? (i.e. intermediate mass main sequence, high ...
parallax
... sky. They look completely different, and it was once believed that they were different types of objects. In fact, the Sun was once considered a planet! We now know the Sun is just another star, and the reason that the Sun appears different to us is that it is so much closer. Determining distances in ...
... sky. They look completely different, and it was once believed that they were different types of objects. In fact, the Sun was once considered a planet! We now know the Sun is just another star, and the reason that the Sun appears different to us is that it is so much closer. Determining distances in ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... ‘The burst of the century’ “This was the burst of the century!” exclaimed James A. Wren, an engineer at Los Alamos National Laboratory and co-author of one of the papers. Indeed, GRB 130427A (as it is now called) was the most powerful gamma-ray burst and the second-brightest optical flash measured i ...
... ‘The burst of the century’ “This was the burst of the century!” exclaimed James A. Wren, an engineer at Los Alamos National Laboratory and co-author of one of the papers. Indeed, GRB 130427A (as it is now called) was the most powerful gamma-ray burst and the second-brightest optical flash measured i ...
Learning About Stars
... does not appear to move like the rest of the stars. In fact…all of the stars seem to circle Polaris. Look at the Star Trail photo. The camera was left on to record the movement of the stars. The North Star doesn’t appear blurry or have a trail because it is in the same position the whole time. ...
... does not appear to move like the rest of the stars. In fact…all of the stars seem to circle Polaris. Look at the Star Trail photo. The camera was left on to record the movement of the stars. The North Star doesn’t appear blurry or have a trail because it is in the same position the whole time. ...
Which of the following represent the best explanation we currently
... LAW #3: The square of a planet’ planet’s sidereal period around the Sun is directly proportional to the cube of its semi-major axis. This law relates the amount of time for the planet to complete one orbit around the Sun to the planet’s average distance from the Sun. If we measure the orbital period ...
... LAW #3: The square of a planet’ planet’s sidereal period around the Sun is directly proportional to the cube of its semi-major axis. This law relates the amount of time for the planet to complete one orbit around the Sun to the planet’s average distance from the Sun. If we measure the orbital period ...
Stars III - Indiana University Astronomy
... • Sun-like stars with <2MSun have long lives, never become hot enough to fuse carbon nuclei, and end as white dwarfs • Intermediate mass stars can make elements heavier than carbon but end as white dwarfs ...
... • Sun-like stars with <2MSun have long lives, never become hot enough to fuse carbon nuclei, and end as white dwarfs • Intermediate mass stars can make elements heavier than carbon but end as white dwarfs ...
Review: How does a star`s mass determine its life story?
... Recall white dwarfs are mostly the Carbon core of an old dead low mass star and most of the Hydrogen was throw away in a planetary nebula when the white dwarf formed. ...
... Recall white dwarfs are mostly the Carbon core of an old dead low mass star and most of the Hydrogen was throw away in a planetary nebula when the white dwarf formed. ...
8.4 White Dwarfs
... Loose protons and electrons near the surface of the neutron star will be sweep up and stream along the magnetic field lines towards the north and south magnetic poles of the neutron star. The magnetic axis of the neutron star does not necessarily have to be aligned with the rotation axis (like the ...
... Loose protons and electrons near the surface of the neutron star will be sweep up and stream along the magnetic field lines towards the north and south magnetic poles of the neutron star. The magnetic axis of the neutron star does not necessarily have to be aligned with the rotation axis (like the ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.