Test 3, February 7, 2007 - Brock physics
... 42. In order to detect a black hole one looks for (a) a spot into which stars and their planets fall. (b) a binary system where a companion star is not visible but has a mass greater than 3 solar masses and is an intense X-ray source. (c) intense source of visible light. (d) the accompanying white h ...
... 42. In order to detect a black hole one looks for (a) a spot into which stars and their planets fall. (b) a binary system where a companion star is not visible but has a mass greater than 3 solar masses and is an intense X-ray source. (c) intense source of visible light. (d) the accompanying white h ...
First Exam - University of Iowa Astrophysics
... 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ∗ (b) the celestial equator (c) the zenith (d) the north celestial pole (e) the constellat ...
... 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ∗ (b) the celestial equator (c) the zenith (d) the north celestial pole (e) the constellat ...
W > 1 - The Open University
... Test your eyesight from a dark site by counting the number of naked eye stars that are visible. Seven should readily be seen. Keen vision will lead you into double figures. A test for moderate apertures is the nebulosity around some of the other brighter stars of the group, especially Merope. Nebula ...
... Test your eyesight from a dark site by counting the number of naked eye stars that are visible. Seven should readily be seen. Keen vision will lead you into double figures. A test for moderate apertures is the nebulosity around some of the other brighter stars of the group, especially Merope. Nebula ...
Definitions
... Spectroscopy – is the systematic study of spectra and spectral lines Blackbody – is a hypothetical body that is a perfect absorber and emitter of EMR C spectrum – consists of a continuous range of frequencies w/o either bright or dark lines, appearing as a continuous range of colours E spectrum – co ...
... Spectroscopy – is the systematic study of spectra and spectral lines Blackbody – is a hypothetical body that is a perfect absorber and emitter of EMR C spectrum – consists of a continuous range of frequencies w/o either bright or dark lines, appearing as a continuous range of colours E spectrum – co ...
ASTRONOMY: WHAT DO YOU NEED TO KNOW
... Ionized gasses surrounding a white dwarf seen as the result of slow gas ejected by the red giant being compressed by the fast gases as the red giant collapses into a white dwarf Know the characteristics and lifespan characteristics of white dwarfs. Does not undergo nuclear fusion but rather contains ...
... Ionized gasses surrounding a white dwarf seen as the result of slow gas ejected by the red giant being compressed by the fast gases as the red giant collapses into a white dwarf Know the characteristics and lifespan characteristics of white dwarfs. Does not undergo nuclear fusion but rather contains ...
Light from stars part II
... precise enough to accurately measure brightness • Modern scale is defined so that 6th magnitude stars are exactly 100 times brighter than 1st magnitude stars • This means stars that differ in magnitude by 1 differ by a factor of 2.512 (e.g. a 3rd magnitude star is 2.512 times brighter than a 2nd mag ...
... precise enough to accurately measure brightness • Modern scale is defined so that 6th magnitude stars are exactly 100 times brighter than 1st magnitude stars • This means stars that differ in magnitude by 1 differ by a factor of 2.512 (e.g. a 3rd magnitude star is 2.512 times brighter than a 2nd mag ...
Astrophysics
... If galaxies are moving away from us, they must have been closer together millions of years ago. If Hubble’s graph is used, the origin of this movement = approx. 10 000 million years old ...
... If galaxies are moving away from us, they must have been closer together millions of years ago. If Hubble’s graph is used, the origin of this movement = approx. 10 000 million years old ...
Document
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are ...
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are ...
2009 Assessment Schedule (90764)
... spectral type of B – F. (The Sun is a main sequence star / other stars are not main sequence stars so are at different stages in their life cycles) (a) ...
... spectral type of B – F. (The Sun is a main sequence star / other stars are not main sequence stars so are at different stages in their life cycles) (a) ...
The Milky Way - Midlandstech
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens as a star uses up its hydrogen? • What happens when a star exhausts its hydrogen? • What evidence do astronomers ha ...
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens as a star uses up its hydrogen? • What happens when a star exhausts its hydrogen? • What evidence do astronomers ha ...
SSG Coordinators will be at the Cronan Ranch observing site at 5
... galaxy is tilted about 30 to our line of sight. With about 300 billion stars spread across a 130,000 light year disk, this is an object worth spending some time with. Of interest is that M31 is approaching us at about 185 miles per second. In about 5 billion years the two galaxies will collide and ...
... galaxy is tilted about 30 to our line of sight. With about 300 billion stars spread across a 130,000 light year disk, this is an object worth spending some time with. Of interest is that M31 is approaching us at about 185 miles per second. In about 5 billion years the two galaxies will collide and ...
Constellations
... during specific seasons This is due to earth’s rotation around sun and tilt of the earth Lyra in summer ...
... during specific seasons This is due to earth’s rotation around sun and tilt of the earth Lyra in summer ...
Document
... 27.2 Analyzing light from stars A few years later, Sir Joseph Norman Lockyer observed a line at the exact wavelength of 587.6 nm. He concluded that this must be an undiscovered element and named it helium, after the Greek name for the Sun, Helios. ...
... 27.2 Analyzing light from stars A few years later, Sir Joseph Norman Lockyer observed a line at the exact wavelength of 587.6 nm. He concluded that this must be an undiscovered element and named it helium, after the Greek name for the Sun, Helios. ...
File
... Use language we can comprehend. Tell us what elements you blend. It gives us strangely little aid, But does tell something in the end. And steadfast as Keats' Eremite, Not even stooping from its sphere, It asks a little of us here. It asks of us a certain height, So when at times the mob is swayed T ...
... Use language we can comprehend. Tell us what elements you blend. It gives us strangely little aid, But does tell something in the end. And steadfast as Keats' Eremite, Not even stooping from its sphere, It asks a little of us here. It asks of us a certain height, So when at times the mob is swayed T ...
CYGNUS CONSTELLATION, the Swan Cygnus is
... Cygnus is a very large constellation. Covering 804 square degrees and around 1.9% of the night sky, Cygnus ranks 16th of the 88 constellations in size. It is bordered by Cepheus to the north and east, Draco to the north and west, Lyra to the west, Vulpecula to the south, Pegasus to the southeast and ...
... Cygnus is a very large constellation. Covering 804 square degrees and around 1.9% of the night sky, Cygnus ranks 16th of the 88 constellations in size. It is bordered by Cepheus to the north and east, Draco to the north and west, Lyra to the west, Vulpecula to the south, Pegasus to the southeast and ...
Magnitude Scale
... • Measure of the brightness of a star if observed from 10 parsecs away (equivalent of luminosity) • Denoted by M or MV • Absolute magnitude and apparent magnitude are the same at a distance of 10 parsecs. ...
... • Measure of the brightness of a star if observed from 10 parsecs away (equivalent of luminosity) • Denoted by M or MV • Absolute magnitude and apparent magnitude are the same at a distance of 10 parsecs. ...
Measuring the Stars
... The spectroscopic parallax calculation can be misleading if the star is not on the main sequence. The width of spectral lines can be used to define luminosity classes: ...
... The spectroscopic parallax calculation can be misleading if the star is not on the main sequence. The width of spectral lines can be used to define luminosity classes: ...
Distance measures - ScienceEducationatNewPaltz
... The closer a star is to us, the larger its angle of parallax will be. Astronomers have defined a standard unit of distance to be the parsec (pc). One parsec is the distance to a point in space that subtends a parallax angle of one arc second. This produces the simple but effective relationship: dist ...
... The closer a star is to us, the larger its angle of parallax will be. Astronomers have defined a standard unit of distance to be the parsec (pc). One parsec is the distance to a point in space that subtends a parallax angle of one arc second. This produces the simple but effective relationship: dist ...
Stellar Evolution - Harnett County High Schools Wiki
... for helium to react and form carbon Star contracts to a more smaller size where it is more stable Star never becomes hot enough for carbon to react, so star’s energy production ceases at this point Outer layers of gas expand and are driven off This outer layer of gas is called a planetary nebula Cor ...
... for helium to react and form carbon Star contracts to a more smaller size where it is more stable Star never becomes hot enough for carbon to react, so star’s energy production ceases at this point Outer layers of gas expand and are driven off This outer layer of gas is called a planetary nebula Cor ...
Our Sun - STEMpire Central
... A. visible “surface” of the Sun B. the “graininess” of the Sun’s surface, evidence of the lava lamp effect C. dim layer of the Sun’s atmosphere, seen as a pink band during an eclipse D. thin atmospheric layer where temperatures skyrocket E. cooler, darker regions of the Sun’s surface F. outer layer ...
... A. visible “surface” of the Sun B. the “graininess” of the Sun’s surface, evidence of the lava lamp effect C. dim layer of the Sun’s atmosphere, seen as a pink band during an eclipse D. thin atmospheric layer where temperatures skyrocket E. cooler, darker regions of the Sun’s surface F. outer layer ...
Characterizing Stars - Department of Physics and Astronomy
... together, that the two star images cannot be resolved • A spectroscopic binary appears to be a single star but has a spectrum with the absorption lines for two distinctly different spectral types of stars • A spectroscopic binary has spectral lines that shift back and forth in wavelength ...
... together, that the two star images cannot be resolved • A spectroscopic binary appears to be a single star but has a spectrum with the absorption lines for two distinctly different spectral types of stars • A spectroscopic binary has spectral lines that shift back and forth in wavelength ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.