Supernovae - Michigan State University
... Electron degeneracy pressure can prevent gravitational collapse In more massive cores electrons become relativistic and gravitational collapse occurs (then p~n4/3 instead of p~n5/3). For N=Z MCh=1.46 M0 ...
... Electron degeneracy pressure can prevent gravitational collapse In more massive cores electrons become relativistic and gravitational collapse occurs (then p~n4/3 instead of p~n5/3). For N=Z MCh=1.46 M0 ...
Participant Handout - Math Machines Home
... discovered that temperature (measure in kelvin) is inversely proportional to the wavelength of a star’s peak emission as described by the equation: λmax T= 3,000,000 nm K The actual brightness (luminosity) of a star is determined by the star’s size and temperature. In addition to having a more blui ...
... discovered that temperature (measure in kelvin) is inversely proportional to the wavelength of a star’s peak emission as described by the equation: λmax T= 3,000,000 nm K The actual brightness (luminosity) of a star is determined by the star’s size and temperature. In addition to having a more blui ...
Double Stars in Scorpio`s Claws
... As summer approaches, mighty Scorpius rises higher each night in the south. While many are familiar with the brilliant red giant Antares (the ‘Rival of Mars’), the claws of Scorpio hold a wealth of double stars that are a rewarding challenge to any astronomer. Some of these are actual double stars ( ...
... As summer approaches, mighty Scorpius rises higher each night in the south. While many are familiar with the brilliant red giant Antares (the ‘Rival of Mars’), the claws of Scorpio hold a wealth of double stars that are a rewarding challenge to any astronomer. Some of these are actual double stars ( ...
High School Science Proficiency Review #2 Earth Science
... Demonstrate the general relationship between the color and temperature of stars. E.12.B.2 Students know stars are powered by nuclear fusion of lighter elements into heavier elements, which results in the release of large ...
... Demonstrate the general relationship between the color and temperature of stars. E.12.B.2 Students know stars are powered by nuclear fusion of lighter elements into heavier elements, which results in the release of large ...
HERE - Dundee Astronomical Society
... Illustration Courtesy of www.heavensabove.com We are now well into winter and the longer and darker evenings, so plenty of opportunities to go outside and freeze whilst looking at some of our favourite objects. This month the Moon occults Aldebaran, the eye of Taurus the Bull and the Hyades (an open ...
... Illustration Courtesy of www.heavensabove.com We are now well into winter and the longer and darker evenings, so plenty of opportunities to go outside and freeze whilst looking at some of our favourite objects. This month the Moon occults Aldebaran, the eye of Taurus the Bull and the Hyades (an open ...
SAP_Paper1_FutureOfUniverse
... supernova created from collisions of stellar remnants. By 10^19 to 10^20 years 90-99% of brown dwarfs and stellar remnants will have been ejected from our galaxy. When two of such objects pass near each other they have the ability to sling-shot the lower mass object out of the galaxy. Then in 10^30 ...
... supernova created from collisions of stellar remnants. By 10^19 to 10^20 years 90-99% of brown dwarfs and stellar remnants will have been ejected from our galaxy. When two of such objects pass near each other they have the ability to sling-shot the lower mass object out of the galaxy. Then in 10^30 ...
Globular Clusters
... even with 60mm. It is not as round and regular as other globs. In medium side scopes it can appear to have a brighter "bar" across the centre, perhaps an illusion created by a few brighter stars on opposite sides of the core or by a slighter darker regions on one side of the "bar". M4 sits far behin ...
... even with 60mm. It is not as round and regular as other globs. In medium side scopes it can appear to have a brighter "bar" across the centre, perhaps an illusion created by a few brighter stars on opposite sides of the core or by a slighter darker regions on one side of the "bar". M4 sits far behin ...
Lecture 10: The Hertzsprung
... See also Figure 19-21 in your book There is a mass-luminosity relation on the main sequence. We can use that + a sample of stars where we get all the stars within a certain distance of the Sun to figure out how many stars of what masses are out there. Answer: Lots of low-mass stars! Very few high-m ...
... See also Figure 19-21 in your book There is a mass-luminosity relation on the main sequence. We can use that + a sample of stars where we get all the stars within a certain distance of the Sun to figure out how many stars of what masses are out there. Answer: Lots of low-mass stars! Very few high-m ...
1. The catalogue structure
... not correspond to zodiacal constellations, which is why the stars that pertain to a single zodiacal constellation can wind up in different zodiacal signs. The canonical version of the Almagest catalogue contained in the work of Peters and Knobel ([1339]) is presented as a table that consists of six ...
... not correspond to zodiacal constellations, which is why the stars that pertain to a single zodiacal constellation can wind up in different zodiacal signs. The canonical version of the Almagest catalogue contained in the work of Peters and Knobel ([1339]) is presented as a table that consists of six ...
Ch. 2
... The Greeks knew that the lack of observable parallax could mean one of two things: 1. Stars are so far away that stellar parallax is too small to notice with the naked eye 2. Earth does not orbit Sun; it is the center of the universe With rare exceptions such as Aristarchus, the Greeks rejected the ...
... The Greeks knew that the lack of observable parallax could mean one of two things: 1. Stars are so far away that stellar parallax is too small to notice with the naked eye 2. Earth does not orbit Sun; it is the center of the universe With rare exceptions such as Aristarchus, the Greeks rejected the ...
doc - Pocket Stars
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
understanding-the
... a. The red shift indicates that distant galaxies are moving away from each other. b. The red shift indicates that distant galaxies are moving towards each other. c. The blue shift indicates that distant galaxies are moving away from each other. d. The blue shift indicates that distant galaxies are m ...
... a. The red shift indicates that distant galaxies are moving away from each other. b. The red shift indicates that distant galaxies are moving towards each other. c. The blue shift indicates that distant galaxies are moving away from each other. d. The blue shift indicates that distant galaxies are m ...
Star Facts - Dr. Noha MH Elnagdi
... absorbs a color or more of the continuous spectrum, the elements in the atmosphere of a star emits an absorption spectrum rather than a continuous spectrum. A absorption spectrum is produced when light from a hot solid or dense gas passes through a cooler gas (which is the atmospheric gases of the ...
... absorbs a color or more of the continuous spectrum, the elements in the atmosphere of a star emits an absorption spectrum rather than a continuous spectrum. A absorption spectrum is produced when light from a hot solid or dense gas passes through a cooler gas (which is the atmospheric gases of the ...
What kind of stuff
... How big? The birth of Modern Cosmology • What are “nebulae”? • Are they part of our own galaxy, the Milky Way? • Are they galaxies themselves? • Is the Milky Way all there is, or is the Universe much bigger and our galaxy is only one of the many? The closest big galaxy: Andromeda (M31) Visible with ...
... How big? The birth of Modern Cosmology • What are “nebulae”? • Are they part of our own galaxy, the Milky Way? • Are they galaxies themselves? • Is the Milky Way all there is, or is the Universe much bigger and our galaxy is only one of the many? The closest big galaxy: Andromeda (M31) Visible with ...
Lecture2 - UCSB Physics
... How big? The birth of Modern Cosmology • What are “nebulae”? • Are they part of our own galaxy, the Milky Way? • Are they galaxies themselves? • Is the Milky Way all there is, or is the Universe much bigger and our galaxy is only one of the many? The closest big galaxy: Andromeda (M31) Visible ...
... How big? The birth of Modern Cosmology • What are “nebulae”? • Are they part of our own galaxy, the Milky Way? • Are they galaxies themselves? • Is the Milky Way all there is, or is the Universe much bigger and our galaxy is only one of the many? The closest big galaxy: Andromeda (M31) Visible ...
homework assignment 2
... your past has told you something about astronomy which is not true. In this homework assignment, I have listed a set of astronomical "facts" that are incorrect. You may have heard some of these; they are the falsehoods most likely to be known to students in the United States (and around the world). ...
... your past has told you something about astronomy which is not true. In this homework assignment, I have listed a set of astronomical "facts" that are incorrect. You may have heard some of these; they are the falsehoods most likely to be known to students in the United States (and around the world). ...
Luminosity Classes
... days. Their period is related to their luminosity so they make good “Standard Candles” and are used to find stellar distances… Polaris is one! ...
... days. Their period is related to their luminosity so they make good “Standard Candles” and are used to find stellar distances… Polaris is one! ...
Neutron Stars
... • Our atoms were once parts of stars that died more than 4.6 billion years ago, whose remains were swept up into the solar system when the Sun formed ...
... • Our atoms were once parts of stars that died more than 4.6 billion years ago, whose remains were swept up into the solar system when the Sun formed ...
Deducing Temperatures and Luminosities of Stars
... Stars with Same Temperature and Different Diameters • Area of star increases with radius (∝ R2, where R is star’s radius) • Measured brightness increases with surface area • If two stars have same T but different luminosities (per unit surface area), then the MORE luminous star must be LARGER. ...
... Stars with Same Temperature and Different Diameters • Area of star increases with radius (∝ R2, where R is star’s radius) • Measured brightness increases with surface area • If two stars have same T but different luminosities (per unit surface area), then the MORE luminous star must be LARGER. ...
The Milky Way
... • According to the density-wave theory, spiral arms are created by density waves that sweep around the Galaxy • The gravitational field of this spiral pattern causes stars and gas to slow down near the arm • This compresses the interstellar clouds, triggering the formation of stars • The entire arm ...
... • According to the density-wave theory, spiral arms are created by density waves that sweep around the Galaxy • The gravitational field of this spiral pattern causes stars and gas to slow down near the arm • This compresses the interstellar clouds, triggering the formation of stars • The entire arm ...
Constellation Catalog
... 1.) Cassiopeia has three stars with known planets and contains two Messier objects (objects similar yet not classified as comets) 2.) Cassiopeia is the 25th largest constellation in the night sky occupying 598 square degrees. 3.) The Perseids meteor shower is associated with Cassiopeia ...
... 1.) Cassiopeia has three stars with known planets and contains two Messier objects (objects similar yet not classified as comets) 2.) Cassiopeia is the 25th largest constellation in the night sky occupying 598 square degrees. 3.) The Perseids meteor shower is associated with Cassiopeia ...
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.