Astronomy Club
... For last 1000 years astronomers have looked in to all parts of electromagnetic spectrum and they have collected good amount of information about the content, structure and evolution of our universe. Still our knowledge is far from complete. We are learning further about the cosmos beyond the solar s ...
... For last 1000 years astronomers have looked in to all parts of electromagnetic spectrum and they have collected good amount of information about the content, structure and evolution of our universe. Still our knowledge is far from complete. We are learning further about the cosmos beyond the solar s ...
BENNETT, Constraints on the Orbital Motion of OGLE-2006
... • 1st planets and host star with geometrically measured masses • 1st non-transiting, non-astrometric exoplanet with a known orbital inclination • Probably the first microlensing planetary system with a host star brighter than the source – ~ 5 brighter in H ...
... • 1st planets and host star with geometrically measured masses • 1st non-transiting, non-astrometric exoplanet with a known orbital inclination • Probably the first microlensing planetary system with a host star brighter than the source – ~ 5 brighter in H ...
Stellar Evolution 1
... evolutionary stages: pre-main sequence, main sequence, red giant, white dwarf, supernova, neutron star and black hole. • Describe the evolutionary state of the 16 brightest northern-hemisphere stars. ...
... evolutionary stages: pre-main sequence, main sequence, red giant, white dwarf, supernova, neutron star and black hole. • Describe the evolutionary state of the 16 brightest northern-hemisphere stars. ...
Variable Star Spectroscopy 2008
... Be Stars are main sequence hot (B type) stars which show emission lines, particularly at H alpha from discs of circumstellar material. These discs are generally unstable and build and decay with time. The mechanisms of disc formation and decay are only approximately understood. This is a typical lin ...
... Be Stars are main sequence hot (B type) stars which show emission lines, particularly at H alpha from discs of circumstellar material. These discs are generally unstable and build and decay with time. The mechanisms of disc formation and decay are only approximately understood. This is a typical lin ...
Lecture 11: The Internal Structure of Stars
... The Main Sequence Strong correlation between Luminosity and Temperature Holds for 85% of nearby stars including the Sun All other stars differ in size from main sequence stars Giants & Supergiants Very large radii, but same masses as main-sequence stars White Dwarfs Very compact (about 1 earth radiu ...
... The Main Sequence Strong correlation between Luminosity and Temperature Holds for 85% of nearby stars including the Sun All other stars differ in size from main sequence stars Giants & Supergiants Very large radii, but same masses as main-sequence stars White Dwarfs Very compact (about 1 earth radiu ...
S T A R S
... Alpha Centauri is the closest binary to our sun and Proxima Centauri orbits this binary. Omega Centauri (NGC 5139) is globular cluster. The two pointers Apha & Beta Centauri point to Crux. (NGC is the abbreviation for New General Catalogue which is a listing of star clusters, nebulae and galaxies.) ...
... Alpha Centauri is the closest binary to our sun and Proxima Centauri orbits this binary. Omega Centauri (NGC 5139) is globular cluster. The two pointers Apha & Beta Centauri point to Crux. (NGC is the abbreviation for New General Catalogue which is a listing of star clusters, nebulae and galaxies.) ...
June 2013 Kepler Space Telescope Update
... Most massive galaxies in the Universe fall into two major categories: gas-rich spirals that are actively forming stars, and gas-poor ellipticals, populated by old, red stars and with little or no ongoing star formation. Astronomers have been investigating for decades how these two different types of ...
... Most massive galaxies in the Universe fall into two major categories: gas-rich spirals that are actively forming stars, and gas-poor ellipticals, populated by old, red stars and with little or no ongoing star formation. Astronomers have been investigating for decades how these two different types of ...
Star Formation
... • 2-3 stars are born per year, in our Milky Way Galaxy • Molecules are coolants, helping lower pressure and aiding gravity in collapse • Dust needed for shielding out hot UV light from nearby stars • Requires hundreds of solar masses to insure enough dust to accomplish shielding, so star formation n ...
... • 2-3 stars are born per year, in our Milky Way Galaxy • Molecules are coolants, helping lower pressure and aiding gravity in collapse • Dust needed for shielding out hot UV light from nearby stars • Requires hundreds of solar masses to insure enough dust to accomplish shielding, so star formation n ...
Chapter 20
... Massive than the Sun A star of more than 8 solar masses can fuse elements far beyond carbon in its core, leading to a very different fate. Its path across the H-R diagram is essentially a straight line—it stays at just about the same luminosity as it cools off. Eventually the star dies in a violent ...
... Massive than the Sun A star of more than 8 solar masses can fuse elements far beyond carbon in its core, leading to a very different fate. Its path across the H-R diagram is essentially a straight line—it stays at just about the same luminosity as it cools off. Eventually the star dies in a violent ...
Modeling axial tilt and daylight
... Each person will also need a Styrofoam ball, a wooden skewer, a pair of scissors to trim the point from the skewer, and one or two push-pins to represent locations on the Earth. Put the skewer all the way through the center of each Styrofoam ball, and trim off the pointed end with the scissors (your ...
... Each person will also need a Styrofoam ball, a wooden skewer, a pair of scissors to trim the point from the skewer, and one or two push-pins to represent locations on the Earth. Put the skewer all the way through the center of each Styrofoam ball, and trim off the pointed end with the scissors (your ...
Slide 1
... Order the objects in these images from the smallest object (number 1) to largest object (number 9). Use the first column in the table you created. Write the letter as well as the name of the object in the column. This way, you will have a list that you can ...
... Order the objects in these images from the smallest object (number 1) to largest object (number 9). Use the first column in the table you created. Write the letter as well as the name of the object in the column. This way, you will have a list that you can ...
Stars, Galaxies, and the Universe Section 1
... much light the star emits and how far the star is from Earth. • Absolute magnitude the brightness that a star would have at a distance of 32.6 light-years from Earth • The brighter a star is, the lower the number of its ...
... much light the star emits and how far the star is from Earth. • Absolute magnitude the brightness that a star would have at a distance of 32.6 light-years from Earth • The brighter a star is, the lower the number of its ...
Physics- HSC- Module 9.7 Astrophysics
... During the late 19th and early 20th centuries, astronomers obtained spectra and parallax distances for many stars, a powerful tool was discovered for classifying and understanding stars. Around 1911-13, Enjar Hertzsprung and Henry Norris Russell independently found that stars could be divided into t ...
... During the late 19th and early 20th centuries, astronomers obtained spectra and parallax distances for many stars, a powerful tool was discovered for classifying and understanding stars. Around 1911-13, Enjar Hertzsprung and Henry Norris Russell independently found that stars could be divided into t ...
Dec 2016 - Astronomical Society of Northern New England
... spiral galaxy is difficult to view. During Messier Marathon time in mid to late March, M74 is all but lost as it sets in the glow of evening twilight. What makes M74 such a challenge is its low surface brightness. A 9th magnitude galaxy shouldn’t be difficult to observe, but when its light is spread ...
... spiral galaxy is difficult to view. During Messier Marathon time in mid to late March, M74 is all but lost as it sets in the glow of evening twilight. What makes M74 such a challenge is its low surface brightness. A 9th magnitude galaxy shouldn’t be difficult to observe, but when its light is spread ...
托福TPO3听力真题文本6 小马过河为大家准备了“托福TPO2听力真题
... which looks like a continuous band of rainbow colors. The light that we see with our human eyes as a band of rainbow color falls in the range of what’s called visible light. And visible light spectroscopy is probably the most important kind of spectroscopy. Anyone want to take a stab at the scientif ...
... which looks like a continuous band of rainbow colors. The light that we see with our human eyes as a band of rainbow color falls in the range of what’s called visible light. And visible light spectroscopy is probably the most important kind of spectroscopy. Anyone want to take a stab at the scientif ...
Lighthouse in the Sky Quiz Q & A
... c. both observers measure the same altitude. d. the positions of the observers relative to the GP cannot be determined because the azimuths from each observer are not given. ...
... c. both observers measure the same altitude. d. the positions of the observers relative to the GP cannot be determined because the azimuths from each observer are not given. ...
Physics of Astronomy – Week 3 quiz
... A collection of a million to a hundred billion or more suns (stars) in a large system, often containing spiral arms; for example, our own Milky Way Galaxy. ...
... A collection of a million to a hundred billion or more suns (stars) in a large system, often containing spiral arms; for example, our own Milky Way Galaxy. ...
Gingin Observatory July 2015 Newsletter
... fact, Uranus remains within 0.5 of this star from mid –June through to early September. Zeta is a fine double and best in the constellation for small telescopes. The 5 th and the 6th magnitude pair of suns is separated by a respectable 23 arch seconds, the primary is mostly described as white or bl ...
... fact, Uranus remains within 0.5 of this star from mid –June through to early September. Zeta is a fine double and best in the constellation for small telescopes. The 5 th and the 6th magnitude pair of suns is separated by a respectable 23 arch seconds, the primary is mostly described as white or bl ...
Pulsating variable stars and the Hertzsprung
... Hyde Wollaston (1766-1828) reported dark gaps between colors in the continuous spectrum. Later, Joseph von Fraunhofer (1787-1826) observed the Solar spectra more detailed and found that the dark gaps are different in strength. German physicist Gustav Kirchhoff (1824-1887) published his fundamental w ...
... Hyde Wollaston (1766-1828) reported dark gaps between colors in the continuous spectrum. Later, Joseph von Fraunhofer (1787-1826) observed the Solar spectra more detailed and found that the dark gaps are different in strength. German physicist Gustav Kirchhoff (1824-1887) published his fundamental w ...
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.