Lecture
... The brightest stars are either blue (=> unusually hot) or red (=> unusually cold). (Is this a contradiction?) ...
... The brightest stars are either blue (=> unusually hot) or red (=> unusually cold). (Is this a contradiction?) ...
Brock physics - Brock University
... (a) the core collapse of a medium-mass star. (b) the core collapse of a high-mass star. (c) * matter from a nearby star falling onto the surface of a white dwarf, becoming compressed and heated, and eventually resulting in an explosion. (d) matter from a nearby star falling onto the surface of a neu ...
... (a) the core collapse of a medium-mass star. (b) the core collapse of a high-mass star. (c) * matter from a nearby star falling onto the surface of a white dwarf, becoming compressed and heated, and eventually resulting in an explosion. (d) matter from a nearby star falling onto the surface of a neu ...
March 2010 - Pomona Valley Amateur Astronomers
... expansion of the universe, and makes it harder for aliens to take intergalactic journeys. Sometimes those aliens say they're from the Andromeda Galaxy (M31) some three million light years away. Perhaps this is because it's most distant object that can be seen by the unaided eye. In a telescope it re ...
... expansion of the universe, and makes it harder for aliens to take intergalactic journeys. Sometimes those aliens say they're from the Andromeda Galaxy (M31) some three million light years away. Perhaps this is because it's most distant object that can be seen by the unaided eye. In a telescope it re ...
Aging nearby spiral galaxies using H
... Importance of the flux ratio Hα : UV output decreases over Myr » UV relatively constant » Hα caused by stars M > 10M: · High temperature = UV photons · large mass = short lifetime Red: UV (1500Ǻ) Blue: Optical H-α (6563Ǻ) image of M51 (GALEX) ...
... Importance of the flux ratio Hα : UV output decreases over Myr » UV relatively constant » Hα caused by stars M > 10M: · High temperature = UV photons · large mass = short lifetime Red: UV (1500Ǻ) Blue: Optical H-α (6563Ǻ) image of M51 (GALEX) ...
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1
... we derived earlier.] This mass is much larger than determined from the luminous matter, so there should be a lot of invisible “dark” mass in the NGC 4378. ...
... we derived earlier.] This mass is much larger than determined from the luminous matter, so there should be a lot of invisible “dark” mass in the NGC 4378. ...
The Celestial Sphere
... 1928 the International Astronomical Union established 88 official constellations ...
... 1928 the International Astronomical Union established 88 official constellations ...
Star Birth: The Formation of Stars Jonathan Rowles
... fusion of hydrogen to form helium. They range in size from 0.08 times the mass of the Sun to up to 120 Solar masses. They can have lifetimes ranging from a few million years to the age of the universe. ...
... fusion of hydrogen to form helium. They range in size from 0.08 times the mass of the Sun to up to 120 Solar masses. They can have lifetimes ranging from a few million years to the age of the universe. ...
answers2006_07_BC
... Briefly describe the properties of the detected extrasolar planets. With reference to your previous answer, discuss how these properties are likely to be biased by the detection method used. ...
... Briefly describe the properties of the detected extrasolar planets. With reference to your previous answer, discuss how these properties are likely to be biased by the detection method used. ...
Lecture 9a: More on Star formation and evolution 10/22
... about 100,000,000 degrees K for He burning ! Stars like our Sun remain main sequence longer due to this PHYS 162 ...
... about 100,000,000 degrees K for He burning ! Stars like our Sun remain main sequence longer due to this PHYS 162 ...
Comets, Meteors, and Meteoroids
... A falling star is a meteor. Meteors are streaks of light in the sky. The light is caused by a small speck of dust burning when it enters the Earth's atmosphere. The dust comes from comets. These pieces of comet dust are called meteoroids. Most meteoroids are smaller than a grain of sand. The flash o ...
... A falling star is a meteor. Meteors are streaks of light in the sky. The light is caused by a small speck of dust burning when it enters the Earth's atmosphere. The dust comes from comets. These pieces of comet dust are called meteoroids. Most meteoroids are smaller than a grain of sand. The flash o ...
NASAexplores 9-12 Lesson: Classified Stars - Science
... you while gazing into the night sky. The absolute magnitude and luminosity are used for that. They give you the relative brightness based on all of the stars being the same distance away from the earth. On this diagram, you do not see all of the individual stars. Since there are so many stars, only ...
... you while gazing into the night sky. The absolute magnitude and luminosity are used for that. They give you the relative brightness based on all of the stars being the same distance away from the earth. On this diagram, you do not see all of the individual stars. Since there are so many stars, only ...
jeopary - Lps.org
... Choose a category. You will be given the answer. You must give the correct question. Click to begin. ...
... Choose a category. You will be given the answer. You must give the correct question. Click to begin. ...
Lecture6
... Fig II-51: How O and B Stars Trigger Star Formation Star-forming regions appear when a giant molecular cloud is compressed. This can be caused by the cloud’s passage through one of the spiral arms of our Galaxy, by a supernova explosion, or by other mechanisms ...
... Fig II-51: How O and B Stars Trigger Star Formation Star-forming regions appear when a giant molecular cloud is compressed. This can be caused by the cloud’s passage through one of the spiral arms of our Galaxy, by a supernova explosion, or by other mechanisms ...
October 2012 - astronomy for beginners
... Very few constellations look like the characters after which they are named. Cygnus the Swan, Leo the Lion and Orion the Hunter are perhaps exceptions and do (with a little imagination) look remotely like those characters. The stars making up the constellations are not generally physically associate ...
... Very few constellations look like the characters after which they are named. Cygnus the Swan, Leo the Lion and Orion the Hunter are perhaps exceptions and do (with a little imagination) look remotely like those characters. The stars making up the constellations are not generally physically associate ...
RR animation
... and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is thought to be similar, but the nature and histories of these stars is thought to be ra ...
... and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is thought to be similar, but the nature and histories of these stars is thought to be ra ...
Luminosity - UCF Physics
... Parallax and distance. p = parallax angle in arcseconds d (in parsecs) = 1/p ...
... Parallax and distance. p = parallax angle in arcseconds d (in parsecs) = 1/p ...
No Slide Title
... SSI study with 1 orbit time resolution revealed 27 fast transients in 3 A catalogue, mostly Galactic but also a BL Lac and a GRB. Low mass and high mass binary systems looked very different ...
... SSI study with 1 orbit time resolution revealed 27 fast transients in 3 A catalogue, mostly Galactic but also a BL Lac and a GRB. Low mass and high mass binary systems looked very different ...
Chapter 11: Stars
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
Day 1: How to Describe the Sky The Motions of the Stars
... • One evening at midnight, you observe Leo high in the Southern sky. Virgo is to the East of Leo and Cancer is to the West. One month earlier, which of these constellations was high in the Southern sky at midnight? • A: Leo • B: Virgo • C: Cancer ...
... • One evening at midnight, you observe Leo high in the Southern sky. Virgo is to the East of Leo and Cancer is to the West. One month earlier, which of these constellations was high in the Southern sky at midnight? • A: Leo • B: Virgo • C: Cancer ...
Sermon Notes
... Lepus – The Enemy – In modern zodiacs this is a picture of a rabbit or hare. But in ancient zodiacs it is a picture of a serpent. Orion – The Glorious One has his foot on Lepus – The Enemy. Stars in the constellation verify the meaning of who it is. The brightest star is Arnebo meaning “The Enemy of ...
... Lepus – The Enemy – In modern zodiacs this is a picture of a rabbit or hare. But in ancient zodiacs it is a picture of a serpent. Orion – The Glorious One has his foot on Lepus – The Enemy. Stars in the constellation verify the meaning of who it is. The brightest star is Arnebo meaning “The Enemy of ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.