Stars
... The solar system (planets, satellites, asteroids, comets, etc.) formed along with the Sun 4.5 Byr ago from the gravitational collapse of an interstellar cloud of gas and dust. The planets and Sun formed from the same reservoir of interstellar matter and are therefore composed of primarily the same e ...
... The solar system (planets, satellites, asteroids, comets, etc.) formed along with the Sun 4.5 Byr ago from the gravitational collapse of an interstellar cloud of gas and dust. The planets and Sun formed from the same reservoir of interstellar matter and are therefore composed of primarily the same e ...
Solutions
... (c) All you can really conclude is: although average stars have much more of the Galaxy’s mass than luminous main sequence stars, those luminous main sequence stars put out more light than all those average stars put together. Note: A few of you made the equation “more mass equals more luminosity”. ...
... (c) All you can really conclude is: although average stars have much more of the Galaxy’s mass than luminous main sequence stars, those luminous main sequence stars put out more light than all those average stars put together. Note: A few of you made the equation “more mass equals more luminosity”. ...
Galaxy Classification - Starry Night Education
... Milky Way galaxy? a. The plane of the solar system is coincident with the plane of the galaxy. b. The plane of the solar system is perpendicular to that of the Milky Way. c. The plane of the solar system is inclined at a small angle to the plane of the galaxy. d. The angle between the plane of the s ...
... Milky Way galaxy? a. The plane of the solar system is coincident with the plane of the galaxy. b. The plane of the solar system is perpendicular to that of the Milky Way. c. The plane of the solar system is inclined at a small angle to the plane of the galaxy. d. The angle between the plane of the s ...
Protostars and planets
... known were those in the Solar System: the most massive of them is only MJupiter ≈ 10−3 M⊙ , and there are many of them follow approximately circular orbits about the Sun (indeed “planet” comes from Greek “wanderer” because planets appear to move through the fixed stars). Classifications based on mas ...
... known were those in the Solar System: the most massive of them is only MJupiter ≈ 10−3 M⊙ , and there are many of them follow approximately circular orbits about the Sun (indeed “planet” comes from Greek “wanderer” because planets appear to move through the fixed stars). Classifications based on mas ...
Compact Objects
... These two beams are swept around like a lighthouse due to the star’s rotation When the beam is pointed at us, the pulsar is “on”, when it is pointed away it is “off” ...
... These two beams are swept around like a lighthouse due to the star’s rotation When the beam is pointed at us, the pulsar is “on”, when it is pointed away it is “off” ...
HOU Supernova Light Curves
... Galaxy. Various HOU images had been requested throughout February and March, and in early April, two girls at Oil City High School in Pennsylvania received an important phone call. They had serendipitously obtained the first images of a supernova in M51. A supernova is the violent process that a ver ...
... Galaxy. Various HOU images had been requested throughout February and March, and in early April, two girls at Oil City High School in Pennsylvania received an important phone call. They had serendipitously obtained the first images of a supernova in M51. A supernova is the violent process that a ver ...
matthewchristianstarprodject
... hydrogen fuel at its centre. Red giants are 10 and 100 times larger than our Sun. They are very bright because they are so large, although their surface temperature is lower than that of the Sun, about 2000-3000�C. Very large stars (red giants) are often called Super Giants. ...
... hydrogen fuel at its centre. Red giants are 10 and 100 times larger than our Sun. They are very bright because they are so large, although their surface temperature is lower than that of the Sun, about 2000-3000�C. Very large stars (red giants) are often called Super Giants. ...
Astronomy 100 Name(s):
... lab is designed to help you understand how the software works and what its capabilities are. Obtain a laptop computer from the cart (remember to leave the AC adapter in the cart), turn on the computer and, once the Windows desktop is displayed, click on “the Sky” icon along the bottom row or else th ...
... lab is designed to help you understand how the software works and what its capabilities are. Obtain a laptop computer from the cart (remember to leave the AC adapter in the cart), turn on the computer and, once the Windows desktop is displayed, click on “the Sky” icon along the bottom row or else th ...
Slide 1
... nearly the speed of light, live in our Milky Way galaxy. The energetic microquasar systems seem to consist of a very compact object, either a neutron star or a black hole, formed in a supernova explosion but still co-orbiting with an otherwise normal star. Using a very long array of radio telescopes ...
... nearly the speed of light, live in our Milky Way galaxy. The energetic microquasar systems seem to consist of a very compact object, either a neutron star or a black hole, formed in a supernova explosion but still co-orbiting with an otherwise normal star. Using a very long array of radio telescopes ...
Luminosity
... per second. Sun has a luminosity of 3.90x1026 W (often written as L): it emits 3.90x1026 joules per second in all directions. The energy that arrives at the Earth is only a very small amount when compared will the total energy released by the Sun. ...
... per second. Sun has a luminosity of 3.90x1026 W (often written as L): it emits 3.90x1026 joules per second in all directions. The energy that arrives at the Earth is only a very small amount when compared will the total energy released by the Sun. ...
The correct answers are written in bold, italic and underlined. The
... • the core of a red giant star, revealed when the outer layers are shed during the planetary nebula phase. • a white dwarf star that has cooled to a low temperature over its long lifetime. Stars with masses less that 8% of that of the Sun remain as long-lived, dim brown objects, never brightening li ...
... • the core of a red giant star, revealed when the outer layers are shed during the planetary nebula phase. • a white dwarf star that has cooled to a low temperature over its long lifetime. Stars with masses less that 8% of that of the Sun remain as long-lived, dim brown objects, never brightening li ...
Shocking Truth about Massive Stars Lidia Oskinova Chandra’s First Decade of Discovery
... attributed only to the wind opacity (Oskinova et al. ’06) X−ray spectra of single WN stars are harder than spectra of O−stars (Ignace et al. 2003) Single WC stars are X−ray quiet (Oskinova et al. 2003) X−ray bright WR stars are binaries (Oskinova & Hamann ...
... attributed only to the wind opacity (Oskinova et al. ’06) X−ray spectra of single WN stars are harder than spectra of O−stars (Ignace et al. 2003) Single WC stars are X−ray quiet (Oskinova et al. 2003) X−ray bright WR stars are binaries (Oskinova & Hamann ...
Main-sequence stars - Stellar Populations
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
Chapter10 (with interactive links)
... Eclipsing binary: the total light coming from the star system decreases when one star passes in front of the other. This allows us to determine the relative sizes of the two stars. ...
... Eclipsing binary: the total light coming from the star system decreases when one star passes in front of the other. This allows us to determine the relative sizes of the two stars. ...
Astronomy Merit Badge Workshop
... place, for four days in a row. Include landmarks on the horizon such as hills, trees, and buildings. Suggested Procedure: First check to see whether it is a morning or evening moon and choose a time to view the moon. Avoid an observation period when there will be a new moon. Choose a time and place ...
... place, for four days in a row. Include landmarks on the horizon such as hills, trees, and buildings. Suggested Procedure: First check to see whether it is a morning or evening moon and choose a time to view the moon. Avoid an observation period when there will be a new moon. Choose a time and place ...
StarFlight - Center for the Presentation of Science
... distances of the stars we see and the planets in our Solar System, the three dimensional distribution of the stars in the sky, and to build intuition about how apparent brightness of the stars changes with distance Description of Project StarFlight is an interactive computer-based audio/visual progr ...
... distances of the stars we see and the planets in our Solar System, the three dimensional distribution of the stars in the sky, and to build intuition about how apparent brightness of the stars changes with distance Description of Project StarFlight is an interactive computer-based audio/visual progr ...
Basic Observations of the Night Sky
... • It is this 23½ inclination of the Earth's axis which causes the seasons. • It is NOT because we are closer to the Sun in the summer months; in fact, we in the northern hemisphere are actually slightly farther away from the sun during the summer. – Austrailia is slightly closer during their summer ...
... • It is this 23½ inclination of the Earth's axis which causes the seasons. • It is NOT because we are closer to the Sun in the summer months; in fact, we in the northern hemisphere are actually slightly farther away from the sun during the summer. – Austrailia is slightly closer during their summer ...
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.