supplemental educational materials PDF
... • Summer constellations include the zodiacal constellations of Sagittarius, the Archer; Capricorn, the Sea Goat; and Aquarius, the Water Bearer. Other familiar summer constellations include Pegasus, the Flying Horse, and Cygnus, the Swan. • The fall constellations include the zodiacal constellations ...
... • Summer constellations include the zodiacal constellations of Sagittarius, the Archer; Capricorn, the Sea Goat; and Aquarius, the Water Bearer. Other familiar summer constellations include Pegasus, the Flying Horse, and Cygnus, the Swan. • The fall constellations include the zodiacal constellations ...
Chapter 13 (Properties of Stars)
... 17. The song written by Jane Taylor has the lyrics "Twinkle, twinkle little star, How I wonder what you are." Why is it that when we view stars with our naked eye, they seem to twinkle? A. The effect is caused by Earth's atmospheric changes. B. Rapid motion of sunspots causes it C. It depends on the ...
... 17. The song written by Jane Taylor has the lyrics "Twinkle, twinkle little star, How I wonder what you are." Why is it that when we view stars with our naked eye, they seem to twinkle? A. The effect is caused by Earth's atmospheric changes. B. Rapid motion of sunspots causes it C. It depends on the ...
Time From the Perspective of a Particle Physicist
... increases temperature and density If the temperature at the center becomes large enough (5 million degrees) then H to He fusion can occur: Star is born Many stars formed from same cloud ...
... increases temperature and density If the temperature at the center becomes large enough (5 million degrees) then H to He fusion can occur: Star is born Many stars formed from same cloud ...
DP11 Foundations of Astronomy
... proposed by Lord Kelvin and Hermann von Helmholtz. Helmholtz's calculations showed that the contraction could have started at most 25 million years ago. At around the same time, calculations were showing that the Earth was 4.6 billion years old. So, gravitational contraction couldn't be powering the ...
... proposed by Lord Kelvin and Hermann von Helmholtz. Helmholtz's calculations showed that the contraction could have started at most 25 million years ago. At around the same time, calculations were showing that the Earth was 4.6 billion years old. So, gravitational contraction couldn't be powering the ...
Magnitude scale theory
... Consider two stars A and B. Star A appears to be brighter than star B. In other words the intensity of the light reaching the observer from star A is greater than that from star B. ...
... Consider two stars A and B. Star A appears to be brighter than star B. In other words the intensity of the light reaching the observer from star A is greater than that from star B. ...
Determining the Sizes of Stars Using the HR Diagram
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
Galactic Star Formation Science with Integral Field
... • Observations of IRAS 04158+2805 were only possible with Gemini +LGS AO because of the nearby r~17.6 magnitude guide star ...
... • Observations of IRAS 04158+2805 were only possible with Gemini +LGS AO because of the nearby r~17.6 magnitude guide star ...
CP2: KUPKA et al.: Observational signatures of atmospheric velocity
... One of us (FK) has been developing new models of convection based on equations describing local mean values of moments of the distributions of velocity, temperature, density, pressure, etc. These model are reaching the point where it is useful to compare them with velocity fields observed through th ...
... One of us (FK) has been developing new models of convection based on equations describing local mean values of moments of the distributions of velocity, temperature, density, pressure, etc. These model are reaching the point where it is useful to compare them with velocity fields observed through th ...
How far away are the Stars?
... Technical Difficulties in Triangulation • For a fixed baseline, angle 90 as object gets further away. • Hence error in distance value increases. • How big a baseline can you get? Diameter of Earth : 13,000km Size of Earth’s orbit : 300,000,000km ...
... Technical Difficulties in Triangulation • For a fixed baseline, angle 90 as object gets further away. • Hence error in distance value increases. • How big a baseline can you get? Diameter of Earth : 13,000km Size of Earth’s orbit : 300,000,000km ...
Milky Way - Wayne Hu`s Tutorials
... Kinematic Distances to Stars • Only nearby stars have their distance measured by parallax further than a parsec the change in angle is < 1 arcsec: p(arcsec) = 1pc/d • If proper motion across the sky can be measured from the change in angular position µ in rad/s vt = µd • Often vt can be inferred fr ...
... Kinematic Distances to Stars • Only nearby stars have their distance measured by parallax further than a parsec the change in angle is < 1 arcsec: p(arcsec) = 1pc/d • If proper motion across the sky can be measured from the change in angular position µ in rad/s vt = µd • Often vt can be inferred fr ...
January 2013 - astronomy for beginners
... Messier 42 (M42) The Great Orion Nebula The crowning glory of the constellation of Orion is When a photon of ultraviolet light from the powerful young undoubtedly Messier 42 (M42) the great Orion Nebula. stars hits a gas atom it causes an electron to jump from its It can be found below the line of ...
... Messier 42 (M42) The Great Orion Nebula The crowning glory of the constellation of Orion is When a photon of ultraviolet light from the powerful young undoubtedly Messier 42 (M42) the great Orion Nebula. stars hits a gas atom it causes an electron to jump from its It can be found below the line of ...
Chapter 12
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
ppt
... most in direction of LMC/SMC 53 new XRB candidates; 50% increase in number known in WGACAT. These are mostly high-mass XRB candidates with bright optical ...
... most in direction of LMC/SMC 53 new XRB candidates; 50% increase in number known in WGACAT. These are mostly high-mass XRB candidates with bright optical ...
Ch 28 Class Notes
... 2. An important class of pulsating stars are called _____________________________. These are yellow supergiants whose cycles of brightness range from about 1 day to 50 days (5 is average). The absolute magnitude of a Cepheid is related to the length of time between its periods of maximum brightness ...
... 2. An important class of pulsating stars are called _____________________________. These are yellow supergiants whose cycles of brightness range from about 1 day to 50 days (5 is average). The absolute magnitude of a Cepheid is related to the length of time between its periods of maximum brightness ...
Stellar Evolution: Evolution: Birth, Life, and Death of Stars
... fusion of helium into carbon. When the helium fuel is exhausted, the star again swells into even Comparison of size: Sun - red giant bigger red giant, hundreds of times Source: Australia National Telescope Facility bigger than the Sun ...
... fusion of helium into carbon. When the helium fuel is exhausted, the star again swells into even Comparison of size: Sun - red giant bigger red giant, hundreds of times Source: Australia National Telescope Facility bigger than the Sun ...
Project 4: The HR diagram. Open clusters
... The fact that the luminosity is such a strong function of the mass of the star, has great implications for how long stars live on the Main Sequence. Massive stars have very short lifetimes compared to the Sun (which has a lifetime on the order or 10 billion years or so). A star' ...
... The fact that the luminosity is such a strong function of the mass of the star, has great implications for how long stars live on the Main Sequence. Massive stars have very short lifetimes compared to the Sun (which has a lifetime on the order or 10 billion years or so). A star' ...
First young loose association in the northern hemisphere?
... !!Taking account this property, Guillout et al. (1999) cross-correlated the ROSAT All-Sky Survey (RASS) with the Tycho catalogue creating the largest ("14 000 active stars) and most comprehensive set of late-type stellar X-ray sources, the so-called RasTyc sample. This stellar population can be used ...
... !!Taking account this property, Guillout et al. (1999) cross-correlated the ROSAT All-Sky Survey (RASS) with the Tycho catalogue creating the largest ("14 000 active stars) and most comprehensive set of late-type stellar X-ray sources, the so-called RasTyc sample. This stellar population can be used ...
Star Finder
... C: Label WEST and EAST and South: The edge of the inner image of stars (Oval window) near these cardinal points represents the horizon in these directions. Celestial objects on the dial below these horizon boundaries (hidden from view by the grey area) are below the respective horizons and cannot be ...
... C: Label WEST and EAST and South: The edge of the inner image of stars (Oval window) near these cardinal points represents the horizon in these directions. Celestial objects on the dial below these horizon boundaries (hidden from view by the grey area) are below the respective horizons and cannot be ...
docx - STAO
... When you gaze up in the night sky some stars will be very bright while other stars are barely visible to the unaided eye. With the aid of binoculars you may be able to observe different colours in the stars. The brightness and colour of a star depends on three factors: temperature, distance, and siz ...
... When you gaze up in the night sky some stars will be very bright while other stars are barely visible to the unaided eye. With the aid of binoculars you may be able to observe different colours in the stars. The brightness and colour of a star depends on three factors: temperature, distance, and siz ...
Teacher Demo: Bright Star or Close Star?
... When you gaze up in the night sky some stars will be very bright while other stars are barely visible to the unaided eye. With the aid of binoculars you may be able to observe different colours in the stars. The brightness and colour of a star depends on three factors: temperature, distance, and siz ...
... When you gaze up in the night sky some stars will be very bright while other stars are barely visible to the unaided eye. With the aid of binoculars you may be able to observe different colours in the stars. The brightness and colour of a star depends on three factors: temperature, distance, and siz ...
4P38.pdf
... The results from the “Sun in Time” program suggest that the coronal X-ray-EUV emissions of the young main-sequence Sun were ~100-1000 times stronger than those of the present Sun. Similarly, the transition region and chromospheric FUV-UV emissions of the young Sun are expected to be 20-60 and 10-20 ...
... The results from the “Sun in Time” program suggest that the coronal X-ray-EUV emissions of the young main-sequence Sun were ~100-1000 times stronger than those of the present Sun. Similarly, the transition region and chromospheric FUV-UV emissions of the young Sun are expected to be 20-60 and 10-20 ...
five minute episode script
... the tail of Cygnus the Swan (ooh, I can actually picture a swan in those stars!) And Altair is the Eagle Eye of the constellation Aquila the Eagle. JAMES: So this asterism, the Summer Triangle, really incorporates the regions of three ...
... the tail of Cygnus the Swan (ooh, I can actually picture a swan in those stars!) And Altair is the Eagle Eye of the constellation Aquila the Eagle. JAMES: So this asterism, the Summer Triangle, really incorporates the regions of three ...
Interstellar medium, birth and life of stars
... chromospheric activity that ejects large amounts of matter into space. G, K, and M stars at this stage are called T Tauri stars. A collection of a few hundred or a few thousand newborn stars formed in the plane of the Galaxy is called an open cluster. Stars escape from open clusters, most of which ...
... chromospheric activity that ejects large amounts of matter into space. G, K, and M stars at this stage are called T Tauri stars. A collection of a few hundred or a few thousand newborn stars formed in the plane of the Galaxy is called an open cluster. Stars escape from open clusters, most of which ...
Characteristics of Stars
... Astronomers use a unit called the light-year to measure distances between the stars. A light-year is the distance that light travels in one year, about 9.5 million million kilometers. Standing on Earth looking up at the sky, it may seem as if there is no way to tell how far away the stars are. Howev ...
... Astronomers use a unit called the light-year to measure distances between the stars. A light-year is the distance that light travels in one year, about 9.5 million million kilometers. Standing on Earth looking up at the sky, it may seem as if there is no way to tell how far away the stars are. Howev ...
Whiteq
... density of about 125,000 g/cm3. The densest may be as much as 10,000 times denser than this. The most dense materials on earth are only about 20 g/cm3. This is why the idea was initially regarded with skepticism. These densities would be unexplainable, without knowledge of quantum mechanics, and the ...
... density of about 125,000 g/cm3. The densest may be as much as 10,000 times denser than this. The most dense materials on earth are only about 20 g/cm3. This is why the idea was initially regarded with skepticism. These densities would be unexplainable, without knowledge of quantum mechanics, and the ...
Star catalogue
A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians, and Arabs. Most modern catalogues are available in electronic format and can be freely downloaded from NASA's Astronomical Data Center.Completeness and accuracy is described by the weakest apparent magnitude V (largest number) and the accuracy of the positions.