N (North) Equator Latitude and Declination
... of longitude. The observer’s horizon is the plane tangent to the earth and passing through the observer; it’s perpendicular to the line from the center of the earth, passing through the observer, and going out toward the zenith. The celestial equator is the plane which passes through the earth’s equ ...
... of longitude. The observer’s horizon is the plane tangent to the earth and passing through the observer; it’s perpendicular to the line from the center of the earth, passing through the observer, and going out toward the zenith. The celestial equator is the plane which passes through the earth’s equ ...
Star Basics
... helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can ionize hydrogen over a volume of space 1000 light years across. ...
... helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can ionize hydrogen over a volume of space 1000 light years across. ...
b. Compare the similarities and differences of planets to the stars in
... S4E1. Students will compare and contrast the physical attributes of stars, star patterns, and planets. b. Compare the similarities and differences of planets to the stars in appearance, position, and number in the night sky. Multiple Choice: How is the planet Jupiter similar to the Sun? a. It is ora ...
... S4E1. Students will compare and contrast the physical attributes of stars, star patterns, and planets. b. Compare the similarities and differences of planets to the stars in appearance, position, and number in the night sky. Multiple Choice: How is the planet Jupiter similar to the Sun? a. It is ora ...
STELLAR EVOLUTION
... the next fusion process, until they exhaust all fuel possibilities. The star then ends its existence as a star. A portion of the star’s mass remains as a dead star. The main sequence lifetime of stars depends on the star’s initial mass (the mass contained with the star when it formed). Solar-mass ...
... the next fusion process, until they exhaust all fuel possibilities. The star then ends its existence as a star. A portion of the star’s mass remains as a dead star. The main sequence lifetime of stars depends on the star’s initial mass (the mass contained with the star when it formed). Solar-mass ...
The winter triangle - NRC Publications Archive
... The brightest star in our skies other than the Sun is Sirius, visible in the south-west in the evenings at this time of year. There is no mistaking it. It flashes like a blue-white diamond. Of course the star itself shines a steady bluish white; our turbulent atmosphere provides the light show. The ...
... The brightest star in our skies other than the Sun is Sirius, visible in the south-west in the evenings at this time of year. There is no mistaking it. It flashes like a blue-white diamond. Of course the star itself shines a steady bluish white; our turbulent atmosphere provides the light show. The ...
parallax and triangulation
... • Use Stellarium to observe the sky and discuss what observations you might be able to use to determine which objects are closest to Earth. • Do size and brightness always lead to accurate conclusions about the distances between Earth and objects out in space? ...
... • Use Stellarium to observe the sky and discuss what observations you might be able to use to determine which objects are closest to Earth. • Do size and brightness always lead to accurate conclusions about the distances between Earth and objects out in space? ...
Daynightseasonsstars-1
... begins to form ‘clumps,’ will begin to attract more matter due to gravity protostar As protostar grows, the ‘clumps’ begin to condense, the pressure goes up, so heat also goes up If heats up enough(18,000,000°F), then nuclear fusion begins and VOILA.. a star is born!! ...
... begins to form ‘clumps,’ will begin to attract more matter due to gravity protostar As protostar grows, the ‘clumps’ begin to condense, the pressure goes up, so heat also goes up If heats up enough(18,000,000°F), then nuclear fusion begins and VOILA.. a star is born!! ...
Extreme Stars
... One star is invisible! An unseen blue star hides in a disk of dust that orbits ...
... One star is invisible! An unseen blue star hides in a disk of dust that orbits ...
PARTS OF THE UNIVERSE
... v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away – 40 trillion km) ...
... v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away – 40 trillion km) ...
A time exposure photograph was taken for 8 hours. During that time
... North Pole than the equator WHY?- Closer to Earth’s center on Poles so force of gravity is greater ...
... North Pole than the equator WHY?- Closer to Earth’s center on Poles so force of gravity is greater ...
The Sky and Its Motion - west
... • Celestial Sphere – an imaginary sphere of very large radius surrounding Earth, to which the planets, stars, sun, and moon seem to be attached. • Scientific Model – a concept that helps you think about some aspects of nature without necessarily being true. ...
... • Celestial Sphere – an imaginary sphere of very large radius surrounding Earth, to which the planets, stars, sun, and moon seem to be attached. • Scientific Model – a concept that helps you think about some aspects of nature without necessarily being true. ...
Lecture11
... luminosity has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface temperature from 5500 K to 5800 K. ...
... luminosity has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface temperature from 5500 K to 5800 K. ...
Spectropolarimetric view of the lower atmosphere of
... II - Sciences et techniques, IN2P3 – Université de Montpellier II Place Eugène Bataillon - CC 72 34095 Montpellier Cédex 05, France ...
... II - Sciences et techniques, IN2P3 – Université de Montpellier II Place Eugène Bataillon - CC 72 34095 Montpellier Cédex 05, France ...
Lecture 7 Stars and Galaxies and Nebula, (Oh My!) Feb 18 2003
... well as the halo of other galaxies, but I digress). Very old stars. (low abundance of heavy metals) ...
... well as the halo of other galaxies, but I digress). Very old stars. (low abundance of heavy metals) ...
Slide 1
... The Earth—Moon distance is 384,000 km = 1.28 light-seconds. The Earth—Sun distance is 150,000,000 km = 8.3 light-minutes. The most distant what used to be a planet in the solar system, Pluto, is about 6 × l09 km from the Sun, or 6 × 10-4 ly. The nearest star to us, other than the Sun, is Proxima Cen ...
... The Earth—Moon distance is 384,000 km = 1.28 light-seconds. The Earth—Sun distance is 150,000,000 km = 8.3 light-minutes. The most distant what used to be a planet in the solar system, Pluto, is about 6 × l09 km from the Sun, or 6 × 10-4 ly. The nearest star to us, other than the Sun, is Proxima Cen ...
The Transfer Equation
... • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the ...
... • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the ...
PHY216_lect1_2014 - Astrophysics Research Institute
... set in the west. The hour angle tells you how long it will be before the star transits (or how much time has passed since it transited!) • Hour Angle - angle between a star's current position and the meridian (measured WESTWARD in hours, where 1 hour is equivalent to 15 degrees – because 24 hours = ...
... set in the west. The hour angle tells you how long it will be before the star transits (or how much time has passed since it transited!) • Hour Angle - angle between a star's current position and the meridian (measured WESTWARD in hours, where 1 hour is equivalent to 15 degrees – because 24 hours = ...
Slide 1
... • AGB stars are left with the stellar core surrounded by a relatively thin sphere of hot gas which looks like planetary disk, and called Planetary Nebulae (PNe) (nothing to do with planets per se) • PNe cores continue to cool and become White Dwarfs (94% stars end up as WDs) ...
... • AGB stars are left with the stellar core surrounded by a relatively thin sphere of hot gas which looks like planetary disk, and called Planetary Nebulae (PNe) (nothing to do with planets per se) • PNe cores continue to cool and become White Dwarfs (94% stars end up as WDs) ...
Solar Furnaces
... White dwarfs • Roughly the size of the Earth with the mass of the Sun! • If you try to pack electrons into the same place they must be at different energy levels (like the energy levels of an atom). Each electron must be at a higher energy than the one before it. • All these energetic electrons in ...
... White dwarfs • Roughly the size of the Earth with the mass of the Sun! • If you try to pack electrons into the same place they must be at different energy levels (like the energy levels of an atom). Each electron must be at a higher energy than the one before it. • All these energetic electrons in ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.