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 ...
The Stars education kit - Student activities 5-10
... Sirius is the brightest star in the night sky and is part of the constellation Canis Major. It is a blue-white supergiant star about 9 light years away. Alpha Centauri lies in the constellation of Centaurus. It is one of the bright Pointers that point to the Southern Cross. It is the third brightest ...
... Sirius is the brightest star in the night sky and is part of the constellation Canis Major. It is a blue-white supergiant star about 9 light years away. Alpha Centauri lies in the constellation of Centaurus. It is one of the bright Pointers that point to the Southern Cross. It is the third brightest ...
THE SPECTRA OF FIVE IRREGULAR VARIABLE STARS George H
... 3. V567 Sagittarii.—This object was discovered by Miss Henrietta Swope,4 who stated : "The spectrum is given as Pd in Harvard Circular 231, where it is called a gaseous nebula. . . . The variation is real and apparently irregular with no distinctive character.,, This object has also been observed by ...
... 3. V567 Sagittarii.—This object was discovered by Miss Henrietta Swope,4 who stated : "The spectrum is given as Pd in Harvard Circular 231, where it is called a gaseous nebula. . . . The variation is real and apparently irregular with no distinctive character.,, This object has also been observed by ...
The supernova of AD1181 – an update
... planet Saturn – i.e. among the brightest stars in the sky, but by no means a really brilliant object. The fact that the star “had rays” may merely indicate an optical effect caused by its brightness, being significantly brighter than the surroundings stars in Cassiopeia. Its lack of mention in Korea ...
... planet Saturn – i.e. among the brightest stars in the sky, but by no means a really brilliant object. The fact that the star “had rays” may merely indicate an optical effect caused by its brightness, being significantly brighter than the surroundings stars in Cassiopeia. Its lack of mention in Korea ...
What is a Hertzsprung
... • As it expands, the ionized helium cools, and becomes less ionized and therefore more transparent, allowing the radiation to escape cooling the star and slowing the fusion rate. • Then the expansion stops, and reverses due to the star's gravitational attraction. • The process then repeats. ...
... • As it expands, the ionized helium cools, and becomes less ionized and therefore more transparent, allowing the radiation to escape cooling the star and slowing the fusion rate. • Then the expansion stops, and reverses due to the star's gravitational attraction. • The process then repeats. ...
Name: Astronomy Lab: The Hertzsprung-Russell (H
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
second grade - Math/Science Nucleus
... light. While these objects also shine or reflect light during the day, we generally cannot see them because they are much dimmer than the bright light emitted by the nearby Sun. Most of the light we see at night comes from within our own galaxy, the Milky Way. Some points of light, however, are from ...
... light. While these objects also shine or reflect light during the day, we generally cannot see them because they are much dimmer than the bright light emitted by the nearby Sun. Most of the light we see at night comes from within our own galaxy, the Milky Way. Some points of light, however, are from ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... clusters when a cold giant molecular cloud collapses under its own gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For m ...
... clusters when a cold giant molecular cloud collapses under its own gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For m ...
Classifying the Spectra of Stars:
... M-stars are very cool and typically have broad features. They usually have strong sodium but it’s broader than it is in a K star. M-stars are a complicated mess that often has very large areas of absorption due to molecules in their atmospheres. We will not be dealing with this spectral type. ...
... M-stars are very cool and typically have broad features. They usually have strong sodium but it’s broader than it is in a K star. M-stars are a complicated mess that often has very large areas of absorption due to molecules in their atmospheres. We will not be dealing with this spectral type. ...
CONSTELLATIONS
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
Study Guide 4 Part A Outline
... o Hard to tell where Sun is located, due to absorption by dust. Star counts gave wrong answer. Pulsating variable stars in globular clusters finally showed that Sun is far from the center. o This all culminated in the Curtis-Shapley debate (1920). The issues were: The position of the Sun withi ...
... o Hard to tell where Sun is located, due to absorption by dust. Star counts gave wrong answer. Pulsating variable stars in globular clusters finally showed that Sun is far from the center. o This all culminated in the Curtis-Shapley debate (1920). The issues were: The position of the Sun withi ...
Synthetic color-magnitude diagrams: the ingredients
... Open Cluster NGC6791 (Grundahl et al. 2008) ...
... Open Cluster NGC6791 (Grundahl et al. 2008) ...
Instructor Notes
... Core keeps shrinking – producing heat from contraction (way above amount need to fuse hydrogen, but there is no hydrogen in core). This heat is added to that of “shell burning”, so outer layers of star have more thermal pressure than needed to balance gravity Outer layers of star expand while core c ...
... Core keeps shrinking – producing heat from contraction (way above amount need to fuse hydrogen, but there is no hydrogen in core). This heat is added to that of “shell burning”, so outer layers of star have more thermal pressure than needed to balance gravity Outer layers of star expand while core c ...
Analysis of Two Pulsating X-ray Sources
... The SS Cygni light curve above was observed in the optical part of the spectrum and displays the dynamics among the accretion disk – the material in the disk that was accreted from its companion star – and the surface of the white dwarf. The white dwarf itself is the stellar core of a Sun-sized star ...
... The SS Cygni light curve above was observed in the optical part of the spectrum and displays the dynamics among the accretion disk – the material in the disk that was accreted from its companion star – and the surface of the white dwarf. The white dwarf itself is the stellar core of a Sun-sized star ...
Astronomy Webquest Part 1: Life of Stars: Go to http://www.odec.ca
... 2. The longest stage of the star, covering almost ______% is in the ________________________. 3. Near the end of the main sequence, when there is not enough hydrogen gas to support the star, the outer layers will ______________ in an attempt to ______________________________. 4. This forms a _______ ...
... 2. The longest stage of the star, covering almost ______% is in the ________________________. 3. Near the end of the main sequence, when there is not enough hydrogen gas to support the star, the outer layers will ______________ in an attempt to ______________________________. 4. This forms a _______ ...
Stellar Evolution
... Stellar Death: Medium Sized Stars Medium sized stars, like our sun, begin to show their age as helium builds up in the core. The helium core does not provide any energy and gravity causes the core to contract while hydrogen continues to fuse in a shell around the helium. This gravitational co ...
... Stellar Death: Medium Sized Stars Medium sized stars, like our sun, begin to show their age as helium builds up in the core. The helium core does not provide any energy and gravity causes the core to contract while hydrogen continues to fuse in a shell around the helium. This gravitational co ...
Document
... • The nursery of stars. This “cloud” is a combination of Hydrogen, gas, and dust (remnants of other stars and objects of the universe). • The matter used to make stars are recycled from other substances in the universe. ...
... • The nursery of stars. This “cloud” is a combination of Hydrogen, gas, and dust (remnants of other stars and objects of the universe). • The matter used to make stars are recycled from other substances in the universe. ...
Notes - Michigan State University
... If a stellar core grows beyond its Chandrasekhar mass limit, it will collapse. Typically this will result in a Supernova explosion at least the outer part of a star is blown off into space ...
... If a stellar core grows beyond its Chandrasekhar mass limit, it will collapse. Typically this will result in a Supernova explosion at least the outer part of a star is blown off into space ...
SMMP_BISANA - Infinity and Beyond
... stage, the fusion between astronomy and mythology is so complete that no further distinction is made between them"--the stars were no longer merely identified with certain gods or heroes, but actually were perceived as divine(Seznec, 37-40). ...
... stage, the fusion between astronomy and mythology is so complete that no further distinction is made between them"--the stars were no longer merely identified with certain gods or heroes, but actually were perceived as divine(Seznec, 37-40). ...
Supernovae - Michigan State University
... If a stellar core grows beyond its Chandrasekhar mass limit, it will collapse. Typically this will result in a Supernova explosion at least the outer part of a star is blown off into space ...
... If a stellar core grows beyond its Chandrasekhar mass limit, it will collapse. Typically this will result in a Supernova explosion at least the outer part of a star is blown off into space ...
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.