The Interstellar Medium and Star Formation
... pebbles, then rocks, then boulders, then planetesimals, then planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We ...
... pebbles, then rocks, then boulders, then planetesimals, then planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We ...
File - YEAR 11 EBSS PHYSICS DETAILED STUDIES
... star. After some careful observation, a relationship was established between mass an luminosity. L is proportional to m3, so a star twice as heavy as the sun will be eight times as bright. ...
... star. After some careful observation, a relationship was established between mass an luminosity. L is proportional to m3, so a star twice as heavy as the sun will be eight times as bright. ...
ppt - Astronomy & Physics
... It collapses very quickly (less than one sec!), but the energy gained from the collapse fuses heavier and heavier elements, but consumes more and more energy At the very highest densities protons and electrons combine to form neutrons and neutrinos. Core quickly becomes a very stiff neutron star (ab ...
... It collapses very quickly (less than one sec!), but the energy gained from the collapse fuses heavier and heavier elements, but consumes more and more energy At the very highest densities protons and electrons combine to form neutrons and neutrinos. Core quickly becomes a very stiff neutron star (ab ...
Big Bear Valley Astronomical Society
... flame of St. Elmo's fire that sometimes appears on ships is also connected to them. One day Castor was killed in a fight. Distraught, Pollux pleaded with Zeus to let Castor reside with him on Mount Olympus. Zeus took pity on his son and placed the brothers in the sky next to each other. The Romans a ...
... flame of St. Elmo's fire that sometimes appears on ships is also connected to them. One day Castor was killed in a fight. Distraught, Pollux pleaded with Zeus to let Castor reside with him on Mount Olympus. Zeus took pity on his son and placed the brothers in the sky next to each other. The Romans a ...
17Nov_2014
... • Hydrogen and a little helium were formed shortly after the Big Bang • All other elements were formed inside stars! • Low-mass stars create carbon and oxygen in their cores at the end of their lifespan, thanks to the higher temperatures and pressures present in a red giant star • High-mass stars pr ...
... • Hydrogen and a little helium were formed shortly after the Big Bang • All other elements were formed inside stars! • Low-mass stars create carbon and oxygen in their cores at the end of their lifespan, thanks to the higher temperatures and pressures present in a red giant star • High-mass stars pr ...
ppt - UCL
... high-soft state. The inner-disk temperature changed as shown in the figures below. The emitted luminosity in the 0.3-10 keV band varied by 3 orders of magnitude. The optical/UV luminosity increased by a factor of 2 (0.8 mag) in the high-soft state. ...
... high-soft state. The inner-disk temperature changed as shown in the figures below. The emitted luminosity in the 0.3-10 keV band varied by 3 orders of magnitude. The optical/UV luminosity increased by a factor of 2 (0.8 mag) in the high-soft state. ...
Hertzsprung-Russell Diagram—key to understanding properties of stars. 26 Sept
... – A show highlighting the current sky, spectacular gatherings of Venus with the moon and other planets in coming months. See what Galileo saw through his telescope 400 years ago— the Milky Way and the Pleiades, details on the moon, the four moons of Jupiter, the phases of Venus, and the mysterious d ...
... – A show highlighting the current sky, spectacular gatherings of Venus with the moon and other planets in coming months. See what Galileo saw through his telescope 400 years ago— the Milky Way and the Pleiades, details on the moon, the four moons of Jupiter, the phases of Venus, and the mysterious d ...
Measuring the Properties of Stars - Sierra College Astronomy Home
... The sizes of a few very large stars have been measured directly by interferometry. Knowing the temperature of a star gives its energy emitted per square meter. Knowing the total energy emitted (from the absolute magnitude) one can then calculate the surface area of the star. From that the di ...
... The sizes of a few very large stars have been measured directly by interferometry. Knowing the temperature of a star gives its energy emitted per square meter. Knowing the total energy emitted (from the absolute magnitude) one can then calculate the surface area of the star. From that the di ...
Compa ring between Spectroscopic and Photometric Method for
... This is the most popular and accessible method in astronomy. Photometry is the measurement of the intensity of electromagnetic radiation usually expressed in apparent magnitude. Apparent magnitude is a numerical scale to describe how bright each star appears in the sky. The lower the magnitude, the ...
... This is the most popular and accessible method in astronomy. Photometry is the measurement of the intensity of electromagnetic radiation usually expressed in apparent magnitude. Apparent magnitude is a numerical scale to describe how bright each star appears in the sky. The lower the magnitude, the ...
Linking Asteroids and Meteorites through Reflectance
... • We identify a star cluster that is close enough to determine its distance by parallax • We plots its H-R diagram • Since we know the distances to the cluster stars • We can determine their luminosities ...
... • We identify a star cluster that is close enough to determine its distance by parallax • We plots its H-R diagram • Since we know the distances to the cluster stars • We can determine their luminosities ...
The Galaxy Presentation 2011
... - Within 33 l.y. (10 pc) are over 300 stars - Most are dim, red type M - A few (Sirius, Vega, Altair, Fomalhaut) are bright, white stars younger than Sun - No very massive, short-lived stars (type O or B) - We are in a quiet “suburb,” but it was not always that way. - Hot X-Ray emitting gas coming f ...
... - Within 33 l.y. (10 pc) are over 300 stars - Most are dim, red type M - A few (Sirius, Vega, Altair, Fomalhaut) are bright, white stars younger than Sun - No very massive, short-lived stars (type O or B) - We are in a quiet “suburb,” but it was not always that way. - Hot X-Ray emitting gas coming f ...
What is a Hertzsprung
... • The light curve of this pulsating variable star shows that its brightness alternately rises and falls over a 50-day period ...
... • The light curve of this pulsating variable star shows that its brightness alternately rises and falls over a 50-day period ...
Week 10
... stars. Star A’s luminosity is 5 times higher than star B’s, and star A is 3 times farther away from you than star B. What is the ratio of the brightness of star A to the brightness of star B? (Enter the ratio as a two digit number: if the ratio is 2/3, ...
... stars. Star A’s luminosity is 5 times higher than star B’s, and star A is 3 times farther away from you than star B. What is the ratio of the brightness of star A to the brightness of star B? (Enter the ratio as a two digit number: if the ratio is 2/3, ...
The Milky Way as a Spiral galaxy
... Sun. It became respectable to see the stars as other suns, like our Sun, but scattered through space, with the possibility of other planets around those suns and even intelligent life on those planets. And so the question arose: where is our Sun in this universe of stars? Answering this question req ...
... Sun. It became respectable to see the stars as other suns, like our Sun, but scattered through space, with the possibility of other planets around those suns and even intelligent life on those planets. And so the question arose: where is our Sun in this universe of stars? Answering this question req ...
Making Visual Estimates
... Now Wasn't That Easy! However…. A Lot Of Times There Will Not Be A Comp Star With The Same Magnitude As The Variable Star. When ...
... Now Wasn't That Easy! However…. A Lot Of Times There Will Not Be A Comp Star With The Same Magnitude As The Variable Star. When ...
OBAFGKM(LT) extra credit due today. Mid
... Pulsating Variables Stars that pulsate (expand and contract) Two special types: Cepheid variables RR Lyrae variables ...
... Pulsating Variables Stars that pulsate (expand and contract) Two special types: Cepheid variables RR Lyrae variables ...
General Astronomy - Stockton University
... The 'Game' of Science The following example is from Richard Feynman, "What do we mean when we claim to 'understand' the Universe? We may imagine the enormously complicated situation of changing things we call the physical universe is a chess game played by the gods; we are not permitted to play, bu ...
... The 'Game' of Science The following example is from Richard Feynman, "What do we mean when we claim to 'understand' the Universe? We may imagine the enormously complicated situation of changing things we call the physical universe is a chess game played by the gods; we are not permitted to play, bu ...
Stars: Their Life and Afterlife
... showing the relationship between a star’s luminosity (Y-axis, using the visual magnitude scale) and its temperature or color (X-axis, using the spectral class scale). The first feature to notice in the HR diagram is how the stars form a stripe that goes from the lower-right towards the upper-left: t ...
... showing the relationship between a star’s luminosity (Y-axis, using the visual magnitude scale) and its temperature or color (X-axis, using the spectral class scale). The first feature to notice in the HR diagram is how the stars form a stripe that goes from the lower-right towards the upper-left: t ...
The HR Diagram (PowerPoint version)
... They are ~ 2/3 H, ~ 1/3 He, with just a few percent of everything else (at least in the outer parts, which is what the spectrum tells us about) Incidentally, helium was first detected in the solar spectrum (hence its name, from the Greek ‘helios’) before it was found naturally on Earth. ...
... They are ~ 2/3 H, ~ 1/3 He, with just a few percent of everything else (at least in the outer parts, which is what the spectrum tells us about) Incidentally, helium was first detected in the solar spectrum (hence its name, from the Greek ‘helios’) before it was found naturally on Earth. ...
Zairamink_Lifecycle of a Star
... super nova the protons and electrons of atoms are forced together into neutrons. When neutron stars form, they maintain the momentum of the entire star, but now they're just a few kilometers across. This causes them to spin at tremendous rates, sometimes as fast as hundreds of times a second. Just o ...
... super nova the protons and electrons of atoms are forced together into neutrons. When neutron stars form, they maintain the momentum of the entire star, but now they're just a few kilometers across. This causes them to spin at tremendous rates, sometimes as fast as hundreds of times a second. Just o ...
HW11
... difficult to apply these concepts to the material for this exam. Review your last exam and be sure that you understand why certain answers are correct, and others are wrong. New material for this Exam ...
... difficult to apply these concepts to the material for this exam. Review your last exam and be sure that you understand why certain answers are correct, and others are wrong. New material for this Exam ...
Name: Astronomy Lab: The Hertzsprung-Russell (H
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.