Galaxies
... • Astronomers now have decided that the morphology classification should consist of only two types of galaxies: the spiral and the elliptical. • Barred spirals are a subclass of spirals. Irregulars may be either spiral or barred spiral. ...
... • Astronomers now have decided that the morphology classification should consist of only two types of galaxies: the spiral and the elliptical. • Barred spirals are a subclass of spirals. Irregulars may be either spiral or barred spiral. ...
GoSkyWatch User`s Guide
... Using the accelerometer based finder to identify objects Although the iPhone does not have an electronic compass, GoSkyWatch uses the position that the device is held to aid in the identification of objects. GoSkyWatch enters tracking mode by holding the device above you so that the back points towa ...
... Using the accelerometer based finder to identify objects Although the iPhone does not have an electronic compass, GoSkyWatch uses the position that the device is held to aid in the identification of objects. GoSkyWatch enters tracking mode by holding the device above you so that the back points towa ...
From Simulation to Visualization: Astrophysics Goes
... Data - N-body simulation, 6144 stars (Zwart) 3D position, absolute brightness, mass, & type color derived from mass, type, and spectra* Stars as point objects size depends on apparent brightness size calculated in pixels, not 3D space Star shader in renderman calculate app. brightness - ea ...
... Data - N-body simulation, 6144 stars (Zwart) 3D position, absolute brightness, mass, & type color derived from mass, type, and spectra* Stars as point objects size depends on apparent brightness size calculated in pixels, not 3D space Star shader in renderman calculate app. brightness - ea ...
July 2014 BRAS Newsletter - The Baton Rouge Astronomical Society
... also quantified the fraction of planets that might have been missed by their census, either because the planes of their orbits were tilted so the planets could not transit the host star as seen from Earth, or those that the TERRA software itself could have missed. Shedding (the right amount of) ligh ...
... also quantified the fraction of planets that might have been missed by their census, either because the planes of their orbits were tilted so the planets could not transit the host star as seen from Earth, or those that the TERRA software itself could have missed. Shedding (the right amount of) ligh ...
Forming disk galaxies in magneto-hydro
... In addition, we were for the first time able to predict the expected structure of the magnetic field in a spiral galaxy directly from the initial conditions left behind after the hot Big Bang. It turns out that already an extremely tiny magnetic field left behind by the Big Bang is sufficient to exp ...
... In addition, we were for the first time able to predict the expected structure of the magnetic field in a spiral galaxy directly from the initial conditions left behind after the hot Big Bang. It turns out that already an extremely tiny magnetic field left behind by the Big Bang is sufficient to exp ...
Here
... Conclusion: It is not possible to reproduce the observed distribution if all galaxies are either prolate or oblate axisymmetrical ellipsoids. ...
... Conclusion: It is not possible to reproduce the observed distribution if all galaxies are either prolate or oblate axisymmetrical ellipsoids. ...
Exam #2 Solutions
... The stars are all larger in radius than the Sun, being between 1 and 100 solar radii. All these stars will have very short lifetimes compared to the Sun. The main sequence stars will have lifetimes less than 1 billion years and the giants are at the end of their lives with perhaps as little as10 ...
... The stars are all larger in radius than the Sun, being between 1 and 100 solar radii. All these stars will have very short lifetimes compared to the Sun. The main sequence stars will have lifetimes less than 1 billion years and the giants are at the end of their lives with perhaps as little as10 ...
Star Birth
... blown away, but its thermal energy comes from gravitational contraction, not fusion • Contraction must continue until the core becomes hot enough for nuclear fusion ...
... blown away, but its thermal energy comes from gravitational contraction, not fusion • Contraction must continue until the core becomes hot enough for nuclear fusion ...
astronomy
... Galactic disk Galactic bulge Galactic center Period-luminosity relationship Spiral arms Dpiral density Dark halo Dark matter ...
... Galactic disk Galactic bulge Galactic center Period-luminosity relationship Spiral arms Dpiral density Dark halo Dark matter ...
powerpoints - Georgia Southern University Astrophysics
... unique to the element or molecule that emitted (or absorbed) them due to the unique electronic energy levels in each. • Type Ia and Type II supernova remnants may appear similar in size and shape but have different spectral signatures due to the different progenitors. ...
... unique to the element or molecule that emitted (or absorbed) them due to the unique electronic energy levels in each. • Type Ia and Type II supernova remnants may appear similar in size and shape but have different spectral signatures due to the different progenitors. ...
Star Information ppt.
... • What are the two types of star clusters? • Open clusters contain up to several thousand stars and are found in the disk of the galaxy. ...
... • What are the two types of star clusters? • Open clusters contain up to several thousand stars and are found in the disk of the galaxy. ...
Hertzsprung-Russell Diagrams
... converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to die, they become giants and supergiants (above the main sequence). These stars have ...
... converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to die, they become giants and supergiants (above the main sequence). These stars have ...
TEKS 8.13 A, B, and C
... age but new stars are forming within them. It is believed the Sun lies on the edge of a spiral arm in the Milky Way Galaxy that is thought to be an ordinary spiral galaxy of the Sb class. Elliptical galaxies show little internal structure, have no disks, arms or dust lanes and their brightest stars ...
... age but new stars are forming within them. It is believed the Sun lies on the edge of a spiral arm in the Milky Way Galaxy that is thought to be an ordinary spiral galaxy of the Sb class. Elliptical galaxies show little internal structure, have no disks, arms or dust lanes and their brightest stars ...
presentation source
... “[Even though T Tauri associations could all have similar colors implying young age by coincidence], it is of course, tempting to search for a connection between the T Tauri stars and Bok’s ‘globules,’ but we must admit that at present there is no evidence of any objects intermediate between the two ...
... “[Even though T Tauri associations could all have similar colors implying young age by coincidence], it is of course, tempting to search for a connection between the T Tauri stars and Bok’s ‘globules,’ but we must admit that at present there is no evidence of any objects intermediate between the two ...
Chapter 26: Stars, Galaxies, and the Universe Stars
... stars have higher temperatures, and also run out of hydrogen sooner than smaller stars do. Our Sun, which is a medium-sized star, has been a main sequence star for about 5 billion years. It will continue to shine without changing for about 5 billion more years. Very large stars may be on the main se ...
... stars have higher temperatures, and also run out of hydrogen sooner than smaller stars do. Our Sun, which is a medium-sized star, has been a main sequence star for about 5 billion years. It will continue to shine without changing for about 5 billion more years. Very large stars may be on the main se ...
WEEK 8: CSI UCSC: ASTRO EDITION SOLUTIONS This week you
... (1) Compare Types I and II supernovae. What kinds of objects explode and what are their explosion mechanisms? There are two main types. The first one is Type Ia supernova, which comes from a white dwarf in a binary system with another star. A white dwarf may steal material from the companion star, a ...
... (1) Compare Types I and II supernovae. What kinds of objects explode and what are their explosion mechanisms? There are two main types. The first one is Type Ia supernova, which comes from a white dwarf in a binary system with another star. A white dwarf may steal material from the companion star, a ...
Galileo & the Telescope—Sept 21
... in a few days she was reduced to a semicircle. She maintained this shape for many days, all the while, however, growing in size. At present, she is becoming sickle-shaped… ...
... in a few days she was reduced to a semicircle. She maintained this shape for many days, all the while, however, growing in size. At present, she is becoming sickle-shaped… ...
Finish up Sun and begin Stars of the Sun Test 1 Study
... • Important as determines actual brightness but hard to measure as stars are so far away Closest Alpha Centauri 4.3 light years = 4 x 1013 km (1 AU = distance Earth to Sun = 8 light minutes) • Close stars use stellar parallax (heliocentric parallax or triangulation same meaning) • Can “easily” mea ...
... • Important as determines actual brightness but hard to measure as stars are so far away Closest Alpha Centauri 4.3 light years = 4 x 1013 km (1 AU = distance Earth to Sun = 8 light minutes) • Close stars use stellar parallax (heliocentric parallax or triangulation same meaning) • Can “easily” mea ...
Lecture 12, PPT version
... Galaxy). All of the stars formed at roughly the same time. Globular clusters have lots of RED stars, but no BLUE stars (because they died long ago and were not “replenished”). ...
... Galaxy). All of the stars formed at roughly the same time. Globular clusters have lots of RED stars, but no BLUE stars (because they died long ago and were not “replenished”). ...
ASTR 1120 General Astronomy: Stars and Galaxies
... Ptolemy Broke Stars into 5 magnitude groups m=1 the brightest, m=5 the faintest In 1700’s it was found this was a logarithmic scale, as that is how the naked eye responds. Also, faintest were about 100x fainter than brightest. Break the factor of 100 into 5 equal factors: ...
... Ptolemy Broke Stars into 5 magnitude groups m=1 the brightest, m=5 the faintest In 1700’s it was found this was a logarithmic scale, as that is how the naked eye responds. Also, faintest were about 100x fainter than brightest. Break the factor of 100 into 5 equal factors: ...
Sample Stellar Evolution TEST QUESTIONS
... a. iron fusion requires very high density. b. stars contain very little iron. c. no star can get hot enough for iron fusion, d. iron is the most tightly bound of all nuclei. e. massive stars supernova before they create an iron core. 33. The lowest-mass stars cannot become giants because a. they do ...
... a. iron fusion requires very high density. b. stars contain very little iron. c. no star can get hot enough for iron fusion, d. iron is the most tightly bound of all nuclei. e. massive stars supernova before they create an iron core. 33. The lowest-mass stars cannot become giants because a. they do ...
Spectra of Star Clusters
... But the Universe is 1.37 x 1010 yr old! Every M dwarf that was ever created is still on the main sequence!! ...
... But the Universe is 1.37 x 1010 yr old! Every M dwarf that was ever created is still on the main sequence!! ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.