Lecture 14
... Gravity causes gas cloud to shrink and fragment. Cores of shrinking cloud fragments heat up. Collapse only continues if the cloud cools by radiating away heat. If the initial cloud was spinning a protostellar disk is formed. Protostars approach the main sequence from the right hand side of the HR di ...
... Gravity causes gas cloud to shrink and fragment. Cores of shrinking cloud fragments heat up. Collapse only continues if the cloud cools by radiating away heat. If the initial cloud was spinning a protostellar disk is formed. Protostars approach the main sequence from the right hand side of the HR di ...
Stars, Galaxies, and the Universe Section 1 Section 1
... • The apparent motion of stars, or motion as it appears from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear ...
... • The apparent motion of stars, or motion as it appears from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear ...
Assignment 7 - Department of Physics and Astronomy
... ____ 19. Stars that do not have what it takes to succeed as a star (i.e. do not have enough mass to fuse hydrogen into helium at their centers) are called: a. extras b. red giants c. spectroscopic stars d. brown dwarfs e. main sequence stars ____ 20. Which of the following has the smallest mass? a ...
... ____ 19. Stars that do not have what it takes to succeed as a star (i.e. do not have enough mass to fuse hydrogen into helium at their centers) are called: a. extras b. red giants c. spectroscopic stars d. brown dwarfs e. main sequence stars ____ 20. Which of the following has the smallest mass? a ...
Dubhe
... toward the North star. (“All Star Line Up”) It is also an orange giant. (“All Star Line Up”) ...
... toward the North star. (“All Star Line Up”) It is also an orange giant. (“All Star Line Up”) ...
Test - Scioly.org
... B. Distance from parent star (light years) C. Luminosity D. Absolute Brightness E. Phase 52. What is the Y-Axis of the above light curve? A. Magnitude B. Distance (light years) C. Inclination D. Transit Time E. Both C and D 53. Identify length “A” labeled in the above light curve. (T8) A. One Month ...
... B. Distance from parent star (light years) C. Luminosity D. Absolute Brightness E. Phase 52. What is the Y-Axis of the above light curve? A. Magnitude B. Distance (light years) C. Inclination D. Transit Time E. Both C and D 53. Identify length “A” labeled in the above light curve. (T8) A. One Month ...
The Milky Way Galaxy
... distribution within the Galaxy closely • Consists of a barresembles the Sbc shaped core region Hubble . surrounded by a disk of gas, dust and stars. ...
... distribution within the Galaxy closely • Consists of a barresembles the Sbc shaped core region Hubble . surrounded by a disk of gas, dust and stars. ...
White Dwarfs
... Globular clusters formed 12-14 billion years ago. Useful info for studying the history of the Milky Way Galaxy. ...
... Globular clusters formed 12-14 billion years ago. Useful info for studying the history of the Milky Way Galaxy. ...
Life in the Universe
... On a clear night, with 20/20 vision, one can see about 3,000 stars at a given time. Ancient astronomers traced out “pictures” using groups of these stars. “Group of Stars” in Latin constellations ...
... On a clear night, with 20/20 vision, one can see about 3,000 stars at a given time. Ancient astronomers traced out “pictures” using groups of these stars. “Group of Stars” in Latin constellations ...
White Dwarfs
... temperatures to ignite elements heavier than carbon in their core become white dwarfs. • Hot exposed core of an evolved low mass star. • Supported by electron degeneracy pressure. This is the tendency of atoms to resist compression. • The more massive a white dwarf, the smaller it is. A solar mas ...
... temperatures to ignite elements heavier than carbon in their core become white dwarfs. • Hot exposed core of an evolved low mass star. • Supported by electron degeneracy pressure. This is the tendency of atoms to resist compression. • The more massive a white dwarf, the smaller it is. A solar mas ...
Binary Stars - Mid-Pacific Institute
... Alpha Centauri A & B They orbit each other with a period of 80 years ...
... Alpha Centauri A & B They orbit each other with a period of 80 years ...
Target Stars for Earth-like Planet Searches with the Terrestrial
... located within 50 parsecs of the Sun, we have applied a number of selection criteria to identify a complete sample of about 160 promising target stars for TPF. Our selection criteria aim towards the ability to detect Earth-like planets: those planets with equilibrium temperature and size similar to ...
... located within 50 parsecs of the Sun, we have applied a number of selection criteria to identify a complete sample of about 160 promising target stars for TPF. Our selection criteria aim towards the ability to detect Earth-like planets: those planets with equilibrium temperature and size similar to ...
Deep Space (PDF: 224k)
... similar to our Sun’s. Using the Sun as an archetypical star we can more easily illustrate the difference in other stars. The Sun, a ball of gas with constant gravity and pressure in balance, has an unchanging structure, with the highest temperature and pressure in the center, getting progressively l ...
... similar to our Sun’s. Using the Sun as an archetypical star we can more easily illustrate the difference in other stars. The Sun, a ball of gas with constant gravity and pressure in balance, has an unchanging structure, with the highest temperature and pressure in the center, getting progressively l ...
JWST_eye - University of Arizona
... times wider than the human eye so JWST makes images about 1000 times sharper than the human eye. You can compare the resolution of your eye to that of a telescope by examining the stars in the Pleiades star cluster. The Pleiades cluster is about 2 degrees across. My eye can see stars in the Pleiades ...
... times wider than the human eye so JWST makes images about 1000 times sharper than the human eye. You can compare the resolution of your eye to that of a telescope by examining the stars in the Pleiades star cluster. The Pleiades cluster is about 2 degrees across. My eye can see stars in the Pleiades ...
The Northern Winter Constellations
... If you live in the northern latitudes and you scan the sky from the southern horizon to the region overhead, you should be able to see the following constellations on a clear winter night: Orion the Hunter, Canis Major the Great Dog, Canis Minor the Little Dog, Taurus the Bull, Auriga the Charioteer ...
... If you live in the northern latitudes and you scan the sky from the southern horizon to the region overhead, you should be able to see the following constellations on a clear winter night: Orion the Hunter, Canis Major the Great Dog, Canis Minor the Little Dog, Taurus the Bull, Auriga the Charioteer ...
Chapter 1 Seeing the Light: The Art and Science of Astronomy
... Chapter 1: Seeing the Light: The Art and Science of Astronomy When you look at a star atlas, you discover that the individual stars in a constellation aren’t marked α Canis Majoris, β Canis Majoris, and so on. Usually, the creator of the atlas marks the area of the whole constellation as Canis Majo ...
... Chapter 1: Seeing the Light: The Art and Science of Astronomy When you look at a star atlas, you discover that the individual stars in a constellation aren’t marked α Canis Majoris, β Canis Majoris, and so on. Usually, the creator of the atlas marks the area of the whole constellation as Canis Majo ...
Solar and Lunar Eclipse, the Sky,_x000b_The Milky
... For example the Mansi believed that the Milky Way formed when God created a deer with six legs. Humans couldn’t catch the deer so they called upon the Forest Spirit for help. The Forest Spirit caught the deer and broke two of its legs so that humans could hunt it. The Milky Way represents the ski tr ...
... For example the Mansi believed that the Milky Way formed when God created a deer with six legs. Humans couldn’t catch the deer so they called upon the Forest Spirit for help. The Forest Spirit caught the deer and broke two of its legs so that humans could hunt it. The Milky Way represents the ski tr ...
Lecture 10-11 - OSU Astronomy
... Which of the following spectral classifications represents the hottest stellar surface temperature? ...
... Which of the following spectral classifications represents the hottest stellar surface temperature? ...
Celestial Equator
... Sirius – brightest star in the sky – star of about twice the mass of the sun. Blue. Very luminous, very hot. A main sequence star (like the sun) but of Type A1 Procyon – 8th brighest star. About 1.4 solar masses. Another main sequence star. Hotter and more luminous than the sun but not as luminous ...
... Sirius – brightest star in the sky – star of about twice the mass of the sun. Blue. Very luminous, very hot. A main sequence star (like the sun) but of Type A1 Procyon – 8th brighest star. About 1.4 solar masses. Another main sequence star. Hotter and more luminous than the sun but not as luminous ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.