Astronomy 103 – Midterm 2 – October 29, 2014
... 24. Once the luminosity of a star is known, what has to be measured in order to find the star’s radius? a) parallax angle to find distance b) color to find distance c) color to find surface temperature d) parallax angle to find surface temperature ...
... 24. Once the luminosity of a star is known, what has to be measured in order to find the star’s radius? a) parallax angle to find distance b) color to find distance c) color to find surface temperature d) parallax angle to find surface temperature ...
Unit 1
... • a. in a circle with the Sun at the center • b. in an elliptical orbit, with the Sun at the center of the ellipse • c. in an elliptical orbit, with the Earth at the center of the ellipse • d. in an elliptical orbit, with the Sun at one focus ...
... • a. in a circle with the Sun at the center • b. in an elliptical orbit, with the Sun at the center of the ellipse • c. in an elliptical orbit, with the Earth at the center of the ellipse • d. in an elliptical orbit, with the Sun at one focus ...
Constellation ARA
... mother Rhea hid him in Crete and gave Cronus a stone to swallow, telling him the stone was Zeus. When Zeus grew up, he made Cronus vomit his brothers and sisters. Once freed, they banded together to overthrow Cronus and the Titans. The war between the Gods and the Titans lasted a decade and the gods ...
... mother Rhea hid him in Crete and gave Cronus a stone to swallow, telling him the stone was Zeus. When Zeus grew up, he made Cronus vomit his brothers and sisters. Once freed, they banded together to overthrow Cronus and the Titans. The war between the Gods and the Titans lasted a decade and the gods ...
What is a star?
... size of the sun to 1,000 times the size of the sun. • Two or more stars may be bound together by gravity, which causes them to orbit each other. • Three or more stars that are bound by gravity are called multiple stars or multiple star systems. The largest object in our solar system is the sun, whi ...
... size of the sun to 1,000 times the size of the sun. • Two or more stars may be bound together by gravity, which causes them to orbit each other. • Three or more stars that are bound by gravity are called multiple stars or multiple star systems. The largest object in our solar system is the sun, whi ...
Stars and Constellations
... stars. People in ancient times thought that all stars were part of the Milky Way. Today, we know of many other galaxies similar to the Milky Way. To study the Milky Way as a whole is difficult for scientists on the earth because we are located within it. We cannot look at the Milky Way galaxy from t ...
... stars. People in ancient times thought that all stars were part of the Milky Way. Today, we know of many other galaxies similar to the Milky Way. To study the Milky Way as a whole is difficult for scientists on the earth because we are located within it. We cannot look at the Milky Way galaxy from t ...
Finding Black Holes
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
Finding Black Holes Left Behind by Single Stars
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
Astronomy 10 - UC Berkeley Astronomy w
... When the helium core is first formed, the core is not hot enough fuse the helium into heavier elements. Only once the red giant phase occurs, and the core contracts and heats up to a temperature of around 108 K is the core hot enough to start burning helium. (11) page 321, question 6 When a star she ...
... When the helium core is first formed, the core is not hot enough fuse the helium into heavier elements. Only once the red giant phase occurs, and the core contracts and heats up to a temperature of around 108 K is the core hot enough to start burning helium. (11) page 321, question 6 When a star she ...
Astronomy 103 Final review session - Home | UW
... Quasars and AGN • Many galaxies host supermassive black holes in their centers • Black hole mass many millions of solar masses • Quasars are galaxies where the active galactic nuclei is detected in the radio • In optical, these looked somewhat like stars, hence “Quasi-stellar radio sources” • Now c ...
... Quasars and AGN • Many galaxies host supermassive black holes in their centers • Black hole mass many millions of solar masses • Quasars are galaxies where the active galactic nuclei is detected in the radio • In optical, these looked somewhat like stars, hence “Quasi-stellar radio sources” • Now c ...
Antares - Emmi
... Antares is in the constellation scorpio The Scorpio constellations story is an ancient Greek myth. Orion the hunter was the best hunter in the world and the most handsome man. He bragged that he would kill every animal on Earth. Apollo guardian of the cows pleaded with Hera the queen of the gods t ...
... Antares is in the constellation scorpio The Scorpio constellations story is an ancient Greek myth. Orion the hunter was the best hunter in the world and the most handsome man. He bragged that he would kill every animal on Earth. Apollo guardian of the cows pleaded with Hera the queen of the gods t ...
Teacher Guide
... The brighter the Cepheid variable star is, the longer its period. Because this relationship is well known, Cepheid variables can be used to measure distances: ...
... The brighter the Cepheid variable star is, the longer its period. Because this relationship is well known, Cepheid variables can be used to measure distances: ...
Astronomy 10B List of Concepts– by Chapter
... o Why dust cools molecular clouds better than other ISM o Why are these where stars form? CHAPTER 12: STAR FORMATION • Observations of star formation • Stars form in molecular clouds because … • Stars form in clusters because … • The stages of star formation • Why does a disk form? • Why do jets for ...
... o Why dust cools molecular clouds better than other ISM o Why are these where stars form? CHAPTER 12: STAR FORMATION • Observations of star formation • Stars form in molecular clouds because … • Stars form in clusters because … • The stages of star formation • Why does a disk form? • Why do jets for ...
Comets, Meteors, and Meteoroids
... On November 19, 2002, we passed through a famous comet dust stream. When we flew through this space dust, the meteors seemed to shoot out of a group of stars called “Leo the Lion.” This meteor shower is called the Leonids. In 1833, the Leonids caused a meteor storm. More than 1,000 meteors fell from ...
... On November 19, 2002, we passed through a famous comet dust stream. When we flew through this space dust, the meteors seemed to shoot out of a group of stars called “Leo the Lion.” This meteor shower is called the Leonids. In 1833, the Leonids caused a meteor storm. More than 1,000 meteors fell from ...
Basic Properties of the Stars
... parallax shifts with respect to the distant background of stars. Tycho Brahe improved positional measures from +/- 10 arc minutes to as good as +/- 1 arc minute, but he could measure no parallaxes. This implied either that the stars were more than 3000 Astronomical Units away, or that the Earth was ...
... parallax shifts with respect to the distant background of stars. Tycho Brahe improved positional measures from +/- 10 arc minutes to as good as +/- 1 arc minute, but he could measure no parallaxes. This implied either that the stars were more than 3000 Astronomical Units away, or that the Earth was ...
Goals of the day Clickers Order of Magnitude Astronomy
... • The solar system is light-hours in size • The Local group is millions of light-years in size ...
... • The solar system is light-hours in size • The Local group is millions of light-years in size ...
Directed Reading A
... _____ 1. Which of the following statements is NOT true about stars? a. A star begins its life as a ball of gas and dust. b. As stars get older, they lose some of their material. c. Stars last forever. d. New stars form from the material of old stars. 2. During a star’s life cycle, hydrogen changes t ...
... _____ 1. Which of the following statements is NOT true about stars? a. A star begins its life as a ball of gas and dust. b. As stars get older, they lose some of their material. c. Stars last forever. d. New stars form from the material of old stars. 2. During a star’s life cycle, hydrogen changes t ...
Life of stars, formation of elements
... of near side of dense cloud. • Many more similar starformation regions buried deep inside cloud. ...
... of near side of dense cloud. • Many more similar starformation regions buried deep inside cloud. ...
Celestial Bodies (Mike Stroppa) - Powerpoint
... • Meteor showers common several times a year • Meteorite: An unburnt portion, Strikes the Earth ...
... • Meteor showers common several times a year • Meteorite: An unburnt portion, Strikes the Earth ...
dtu7ech11 - Fort Thomas Independent Schools
... are cooler but larger than hotter, dimmer stars, such as white dwarfs. What sizes are stars? Stars range from more than 1000 times the Sun’s diameter to less than 1/100 the Sun’s diameter. Are most stars isolated from other stars, as the Sun is? No. In the vicinity of the Sun, two-thirds of the star ...
... are cooler but larger than hotter, dimmer stars, such as white dwarfs. What sizes are stars? Stars range from more than 1000 times the Sun’s diameter to less than 1/100 the Sun’s diameter. Are most stars isolated from other stars, as the Sun is? No. In the vicinity of the Sun, two-thirds of the star ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.