Integrative Studies 410 Our Place in the Universe
... distance ladder out as far as we can see Cepheids – about 50 million ly • In 1920 Hubble used this technique to measure the distance to Andromeda (about 2 million ly) • Works best for periodic variables ...
... distance ladder out as far as we can see Cepheids – about 50 million ly • In 1920 Hubble used this technique to measure the distance to Andromeda (about 2 million ly) • Works best for periodic variables ...
Ast 405, Pulsating Stars The following is based Chapter 14 of the
... • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysi ...
... • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysi ...
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK
... a. Appreciate the scale of the universe and basic structure in relationship to the Big Bang theory. b. Give an historical perspective on the development of modern astronomy in conjunction with the development of Newtonian Mechanics and an understanding of gravity, as illustrated by the shift from a ...
... a. Appreciate the scale of the universe and basic structure in relationship to the Big Bang theory. b. Give an historical perspective on the development of modern astronomy in conjunction with the development of Newtonian Mechanics and an understanding of gravity, as illustrated by the shift from a ...
Distances farther out
... get M of stars individually) but orbital planes of binaries inclined to line of sight by some angle hence can only get lower limits to velocities and masses. If binary eclipses , from light curve get angle of inclination and hence accurate masses. Eg of eclipsing binary K stars: 1) ζ Aurigae (fai ...
... get M of stars individually) but orbital planes of binaries inclined to line of sight by some angle hence can only get lower limits to velocities and masses. If binary eclipses , from light curve get angle of inclination and hence accurate masses. Eg of eclipsing binary K stars: 1) ζ Aurigae (fai ...
Lecture Notes-PPT
... collect together by gravity. During the exchange of energy between the stars, some stars reach escape velocity from the protocluster and become runaway stars. The rest become gravitationally bound, meaning they will exist as collection orbiting each other forever. ...
... collect together by gravity. During the exchange of energy between the stars, some stars reach escape velocity from the protocluster and become runaway stars. The rest become gravitationally bound, meaning they will exist as collection orbiting each other forever. ...
Bellringer - Madison County Schools
... year. That’s 300,000 km/s for over 31.5 million seconds. That gives us about 9.461 trillion kilometers. ...
... year. That’s 300,000 km/s for over 31.5 million seconds. That gives us about 9.461 trillion kilometers. ...
Lecture 1
... position of Star A as seen in July and label it “Star A July”. Describe how Star A would appear to move among the distant stars as Earth orbits the Sun counterclockwise from January of one year, through July, to January of the following year. Consider two stars (C and D) that both exhibit parallax. ...
... position of Star A as seen in July and label it “Star A July”. Describe how Star A would appear to move among the distant stars as Earth orbits the Sun counterclockwise from January of one year, through July, to January of the following year. Consider two stars (C and D) that both exhibit parallax. ...
tire
... for atoms to form into molecules. This is the birth place of new stars. 14. A rapidly rotating neutron star that emits a radio beam that sweeps by us many times a second. 15. The grouping of stars on a H-R diagram extending diagonally across the graph. Stars will spend most of their lives on this di ...
... for atoms to form into molecules. This is the birth place of new stars. 14. A rapidly rotating neutron star that emits a radio beam that sweeps by us many times a second. 15. The grouping of stars on a H-R diagram extending diagonally across the graph. Stars will spend most of their lives on this di ...
Planetary Configurations
... ii. Visual binary – true binary in which each star can be seen iii. Spectroscopic binary – binarity as evidenced by periodic movement of spectral lines owing to the Doppler effect as stars execute their orbital motion iv. Eclipsing binary – orientation is such that the two stars alternately pass in ...
... ii. Visual binary – true binary in which each star can be seen iii. Spectroscopic binary – binarity as evidenced by periodic movement of spectral lines owing to the Doppler effect as stars execute their orbital motion iv. Eclipsing binary – orientation is such that the two stars alternately pass in ...
North Star
... star is the subject of this official first image from NASA's Chandra X-ray Observatory. ...
... star is the subject of this official first image from NASA's Chandra X-ray Observatory. ...
Big Bang
... than the Hubble Space Telescope, would collect starlight and the very dim reflected light from the planets. The telescope would have special optics to reduce the starlight by a factor of one billion, thus enabling astronomers to detect the faint planets. ...
... than the Hubble Space Telescope, would collect starlight and the very dim reflected light from the planets. The telescope would have special optics to reduce the starlight by a factor of one billion, thus enabling astronomers to detect the faint planets. ...
Stellar Luminosity
... relatively nearby stars appear to move relative to more distant stars Interactive Figure 15.3 • Because even the nearest stars are so distant, there is a simple relationship between distance and apparent angle a star moves ...
... relatively nearby stars appear to move relative to more distant stars Interactive Figure 15.3 • Because even the nearest stars are so distant, there is a simple relationship between distance and apparent angle a star moves ...
Astronomy 103 Final review session - Home | UW
... • Black hole mass many millions of solar masses • Quasars are galaxies where the active galactic nuclei is detected in the radio • In optical, these looked somewhat like stars, hence “Quasi-stellar radio sources” • Now can resolve host galaxies • More common in earlier stages of universe ...
... • Black hole mass many millions of solar masses • Quasars are galaxies where the active galactic nuclei is detected in the radio • In optical, these looked somewhat like stars, hence “Quasi-stellar radio sources” • Now can resolve host galaxies • More common in earlier stages of universe ...
WebQuest-The-Life-Cycle-of-Stars-1
... and see pictures of the protostars of M16: The Eagle Nebula and other nebulae on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars. 1) Compare the mass of our sun to Sirius? To Proxima Centauri? 2) Based on its mass, will our sun be aro ...
... and see pictures of the protostars of M16: The Eagle Nebula and other nebulae on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars. 1) Compare the mass of our sun to Sirius? To Proxima Centauri? 2) Based on its mass, will our sun be aro ...
20081 Study Guide_77-120
... infer the existence of black holes, use the example of two ice skaters holding hands and spinning in a circle. If one of the skaters were invisible, an observer could still infer that two skaters were present by observing the effect the invisible skater would have on the motion of the visible skater ...
... infer the existence of black holes, use the example of two ice skaters holding hands and spinning in a circle. If one of the skaters were invisible, an observer could still infer that two skaters were present by observing the effect the invisible skater would have on the motion of the visible skater ...
Galaxies and the Universe - Mr. Jones's Science Class
... • a group of stars that form a pattern in the sky • stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • one of 88 sectors into which astronomers divide the sphere of the sky – named after a traditional constellation in that sector • ...
... • a group of stars that form a pattern in the sky • stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • one of 88 sectors into which astronomers divide the sphere of the sky – named after a traditional constellation in that sector • ...
Stars
... Over time, gravity begins to pull this material together. Hydrogen is the most common element that gets pulled in by gravity. Eventually large, dark, cool clouds of matter form. Because of the mass increase, gravity begins to contract the cloud further. The temperature begins to rise and the cloud r ...
... Over time, gravity begins to pull this material together. Hydrogen is the most common element that gets pulled in by gravity. Eventually large, dark, cool clouds of matter form. Because of the mass increase, gravity begins to contract the cloud further. The temperature begins to rise and the cloud r ...
CHAP
... - Astronomers use a unit called the ___________ to measure distances between the stars. - A light-year is the distance that light travels in _________ year which is about 9.5 million kilometers. - Light travels in space at a speed of about ____________ kilometers per second. - It takes the sun’s lig ...
... - Astronomers use a unit called the ___________ to measure distances between the stars. - A light-year is the distance that light travels in _________ year which is about 9.5 million kilometers. - Light travels in space at a speed of about ____________ kilometers per second. - It takes the sun’s lig ...
Which property of a star would not change if we could observe it
... • It works the same with stars! • If we know the total energy output of a star (luminosity), and we can count the number of photons we receive from that star (brightness), we can calculate its distance ...
... • It works the same with stars! • If we know the total energy output of a star (luminosity), and we can count the number of photons we receive from that star (brightness), we can calculate its distance ...
I CAN SEE THE STARS IN YOUR EYES
... Your space craft begins to travel at the speed of light, taking you towards the sun. Traveling at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would ...
... Your space craft begins to travel at the speed of light, taking you towards the sun. Traveling at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would ...
Astronomy Day 2006: A short presentation on eclipsing binary stars
... Why Are They Studied? The type of eclipsing binary stars that I am studying are called contact or over-contact binaries and these are in the last evolutionary stage of this two-star system. From these stars we can learn about the dynamic properties that exists in stars like the mass transfer proce ...
... Why Are They Studied? The type of eclipsing binary stars that I am studying are called contact or over-contact binaries and these are in the last evolutionary stage of this two-star system. From these stars we can learn about the dynamic properties that exists in stars like the mass transfer proce ...
Chapter16
... parsec, an AU fills an angle of 1 second of arc. proper motion — The rate at which a star appears to move across the celestial sphere with respect to very distant objects. radial velocity — The part of the velocity of a body that is directed toward or away from an observer. The radial velocity of a ...
... parsec, an AU fills an angle of 1 second of arc. proper motion — The rate at which a star appears to move across the celestial sphere with respect to very distant objects. radial velocity — The part of the velocity of a body that is directed toward or away from an observer. The radial velocity of a ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.