Energy Generation in Stars
... the protons can become sufficiently close to one another, another force, the Strong Force, will take over and bind the two nuclei together. The strong force is the force that holds together all the protons that exist in various atomic nuclei – to activate this force requires the nuclei to essentiall ...
... the protons can become sufficiently close to one another, another force, the Strong Force, will take over and bind the two nuclei together. The strong force is the force that holds together all the protons that exist in various atomic nuclei – to activate this force requires the nuclei to essentiall ...
Logarithms and Earthquake Magnitude
... If the amplitude at 100 km is less than 4.8 x 10-7 then (A / Azero) will be less than one, which yields a magnitude less than zero because the log10 of a number less than one will be negative. In practice earthquakes this small, although quite numerous, are usually too small to be recorded and locat ...
... If the amplitude at 100 km is less than 4.8 x 10-7 then (A / Azero) will be less than one, which yields a magnitude less than zero because the log10 of a number less than one will be negative. In practice earthquakes this small, although quite numerous, are usually too small to be recorded and locat ...
PODEX – PhOtometric Data EXtractor
... The first image is used ot define the individual aperture radii for all stars listed in the coordinate list. As illustrated in Fig. 1 and Fig. 2, there is a clear relation between the brightness of a star and the optimum aperture size (determined by minimisation of the point–to–point scatter in the ...
... The first image is used ot define the individual aperture radii for all stars listed in the coordinate list. As illustrated in Fig. 1 and Fig. 2, there is a clear relation between the brightness of a star and the optimum aperture size (determined by minimisation of the point–to–point scatter in the ...
newsletter - Thanet Astronomy Group
... It was written and illustrated by astronomical experts Storm Dunlop and Wil Tirion and was approved by the astronomers of the Royal Observatory Greenwich, so I know that all the references made will relate to where I live in the UK but are written in such a way that it makes Stargazing relatively ea ...
... It was written and illustrated by astronomical experts Storm Dunlop and Wil Tirion and was approved by the astronomers of the Royal Observatory Greenwich, so I know that all the references made will relate to where I live in the UK but are written in such a way that it makes Stargazing relatively ea ...
The Planetarium Fleischmann Planetarium
... Flight Center, published their findings in the June 23, 2005 issue of the journal Nature. Fomalhaut, a 200-million-year-old star, is a mere infant compared to our own 4.5-billionyear-old Sun. It resides 25 light-years away from the Sun. Located in the constellation Piscis Austrinus (the Southern Fis ...
... Flight Center, published their findings in the June 23, 2005 issue of the journal Nature. Fomalhaut, a 200-million-year-old star, is a mere infant compared to our own 4.5-billionyear-old Sun. It resides 25 light-years away from the Sun. Located in the constellation Piscis Austrinus (the Southern Fis ...
Unit 13―The “Fixed” Stars
... 185. The number of stars. "As numerous as the stars of heaven" is a familiar figure of speech appearing in literature but very early on, and before Hubble made his contribution to the same question, astronomers naturally asked the question, “How many stars are there?” Even before modern telescopes e ...
... 185. The number of stars. "As numerous as the stars of heaven" is a familiar figure of speech appearing in literature but very early on, and before Hubble made his contribution to the same question, astronomers naturally asked the question, “How many stars are there?” Even before modern telescopes e ...
Solutions to the 1 st Astronomy Exam
... The celestial equator appears hinged to the horizon at exactly due east and due west for all observers. The altitude of the celestial equator depends on the observers latitude. For observers near the equator the celestial equator passes nearly through the zenith – a very high altitude. For observers ...
... The celestial equator appears hinged to the horizon at exactly due east and due west for all observers. The altitude of the celestial equator depends on the observers latitude. For observers near the equator the celestial equator passes nearly through the zenith – a very high altitude. For observers ...
Chapter 13: Interstellar Matter and Star Formation
... 1. Theories about star birth began with Russell (and the H-R diagram) early in the 20th century. Russell thought that stars are born as red giants, become O- and B-type main sequence stars and then move down the main sequence, gradually dimming as they live out their lives. 2. We now know that stars ...
... 1. Theories about star birth began with Russell (and the H-R diagram) early in the 20th century. Russell thought that stars are born as red giants, become O- and B-type main sequence stars and then move down the main sequence, gradually dimming as they live out their lives. 2. We now know that stars ...
Star-S_Teacher_Guide - The University of Texas at Dallas
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
Chapter 10
... Stellar spectra are much more informative than the blackbody curves. There are seven general categories of stellar spectra, corresponding to different ...
... Stellar spectra are much more informative than the blackbody curves. There are seven general categories of stellar spectra, corresponding to different ...
Stellar Winds and Mass Loss
... These profiles are fit using the above velocity profile, with different numbers of absorbing ions, until the profile matches the observed unsaturated profile ...
... These profiles are fit using the above velocity profile, with different numbers of absorbing ions, until the profile matches the observed unsaturated profile ...
Lecture 3, PPT version
... First quarter is mid-way between new and full, so it must rise at noon (i.e. 6 hours later than the new moon rises) and set at midnight (i.e., 12 hours after it rose). Choose a spot on the earth to stand, then ride along with the earth as it rotates counter-clockwise ...
... First quarter is mid-way between new and full, so it must rise at noon (i.e. 6 hours later than the new moon rises) and set at midnight (i.e., 12 hours after it rose). Choose a spot on the earth to stand, then ride along with the earth as it rotates counter-clockwise ...
Astronomy Puzzle-1
... 8. A medieval time astronomer from Gujarat and worked as a head of the department where astronomy studies were conducted in Sanskrit at Ujjain 9. Measured rotational periods of Jupiter and Mars; discovered four satellites of Saturn and the gap in Saturn’s rings. 10. First to confirm Einstein’s predi ...
... 8. A medieval time astronomer from Gujarat and worked as a head of the department where astronomy studies were conducted in Sanskrit at Ujjain 9. Measured rotational periods of Jupiter and Mars; discovered four satellites of Saturn and the gap in Saturn’s rings. 10. First to confirm Einstein’s predi ...
Warm-Up Monday, July 23, 2012
... • B. The stars in Orion orbit the Sun, just like the planets. • C. The brightest stars in Orion are the ones that are closest to us. • D. You can’t tell if the brightest stars in Orion are really brighter than the others, or if they are just closer to us. • E. The stars in Orion are all the same dis ...
... • B. The stars in Orion orbit the Sun, just like the planets. • C. The brightest stars in Orion are the ones that are closest to us. • D. You can’t tell if the brightest stars in Orion are really brighter than the others, or if they are just closer to us. • E. The stars in Orion are all the same dis ...
Acceleration of Coronal Mass Ejection In Long Rising Solar
... released by the Sun over its whole main sequence life. The catastrophic consequence is a supernova explosion. • The product at the core is a neutral star, or even a black hole (if the degenerate pressure of neutrons can not withhold the gravitational pressure) • Heavy elements generated in the core ...
... released by the Sun over its whole main sequence life. The catastrophic consequence is a supernova explosion. • The product at the core is a neutral star, or even a black hole (if the degenerate pressure of neutrons can not withhold the gravitational pressure) • Heavy elements generated in the core ...
Part 2 - Stellar Evolution
... (2.3) Post-main Sequence < 0.05: No 2D fusion “planet” <0.085: No 1H Fusion brown dwarf ...
... (2.3) Post-main Sequence < 0.05: No 2D fusion “planet” <0.085: No 1H Fusion brown dwarf ...
Astronomy Curriculum
... 3. Compare and contrast sidereal time with solar time. 4. Explain time zones. 5. Identify the origin of calendars and how a year was defined for each. a. Describe the different calendars invented in the past. b. Compare and contrast sidereal year with a solar (tropical) year. 6. Discuss the origin o ...
... 3. Compare and contrast sidereal time with solar time. 4. Explain time zones. 5. Identify the origin of calendars and how a year was defined for each. a. Describe the different calendars invented in the past. b. Compare and contrast sidereal year with a solar (tropical) year. 6. Discuss the origin o ...
Measuring Our Universe
... brightest star in the constellation Lyra, as 0.125 arcseconds (26 light-years) in 1837, but the reliability of his measurement was poor, even though his first published value is very close to the currently accepted value of 0.129 arcseconds. In 1838 Friedrich Wilhelm Bessel obtained a very accurate ...
... brightest star in the constellation Lyra, as 0.125 arcseconds (26 light-years) in 1837, but the reliability of his measurement was poor, even though his first published value is very close to the currently accepted value of 0.129 arcseconds. In 1838 Friedrich Wilhelm Bessel obtained a very accurate ...
The Celestial Sphere
... sphere is measured eastward along the celestial equator, from a zero-point (i.e. where α = 0o), defined to be the vernal equinox – the place where the Sun is on the sky on March 21. Similar to the latitude on Earth, the Declination δ of an object on the celestial sphere is measured northward or sout ...
... sphere is measured eastward along the celestial equator, from a zero-point (i.e. where α = 0o), defined to be the vernal equinox – the place where the Sun is on the sky on March 21. Similar to the latitude on Earth, the Declination δ of an object on the celestial sphere is measured northward or sout ...
Name
... Identify two stars from the Characteristics of Stars graph that are at the same life-cycle stage as the Sun. ...
... Identify two stars from the Characteristics of Stars graph that are at the same life-cycle stage as the Sun. ...
Part 1
... (D) they did not think Gods would fling us off to a distant rock far away from the center. (E) it was just a bad outcome in a coin toss. 33. Saturn is on average 10 AU from the Sun. What is the approximate orbital period of Saturn? (A) 10 years. (B) 32 years. (C) 100 years. (D) 1000 years. (E) There ...
... (D) they did not think Gods would fling us off to a distant rock far away from the center. (E) it was just a bad outcome in a coin toss. 33. Saturn is on average 10 AU from the Sun. What is the approximate orbital period of Saturn? (A) 10 years. (B) 32 years. (C) 100 years. (D) 1000 years. (E) There ...
A Tale of Two (Solar) Telescopes: something old, something
... bottom-most rungs of Drake’s Ladder, where sadly the sexiness is low, but on positive side the knowledge content was though to be high; even so, a few surprises still were to be found… ...
... bottom-most rungs of Drake’s Ladder, where sadly the sexiness is low, but on positive side the knowledge content was though to be high; even so, a few surprises still were to be found… ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.