white dwarfs, neutron stars, black hole
... Russell, independently discovered a relationship between the luminosity of a star and its temperature. The Hertzsprung-Russell (H-R) diagram is a plot of the luminosity (or absolute magnitude) against temperature (or spectral class) for a group of stars. The H-R diagram is one of the most powerful a ...
... Russell, independently discovered a relationship between the luminosity of a star and its temperature. The Hertzsprung-Russell (H-R) diagram is a plot of the luminosity (or absolute magnitude) against temperature (or spectral class) for a group of stars. The H-R diagram is one of the most powerful a ...
Exoplanets
... planet: located 20 light-years away, it may have water on its surface. (eso0722) 2006: Observations show that some objects that are several times the mass of Jupiter have a disc surrounding them and may form in a similar way to stars. It thus becomes much more difficult to define precisely what a ...
... planet: located 20 light-years away, it may have water on its surface. (eso0722) 2006: Observations show that some objects that are several times the mass of Jupiter have a disc surrounding them and may form in a similar way to stars. It thus becomes much more difficult to define precisely what a ...
April - Magic Valley Astronomical Society
... to find our first four Messier galaxies. Hopefully. Stop #1 is at M98, just west of the kite. Giant binoculars running at 15x and more may reveal its cigar-shaped profile surrounding circular core. Next, try for M99, just south of the kite's tail. It’s not significantly easier to see, glowing dimly ...
... to find our first four Messier galaxies. Hopefully. Stop #1 is at M98, just west of the kite. Giant binoculars running at 15x and more may reveal its cigar-shaped profile surrounding circular core. Next, try for M99, just south of the kite's tail. It’s not significantly easier to see, glowing dimly ...
Open Houses at the Campus Observatory Astronomical Horizons Lecture
... What happens to the earth? Planetary nebula shell expelled, far beyond earth. ...
... What happens to the earth? Planetary nebula shell expelled, far beyond earth. ...
3RD GRADE EARTH AND MOON OBSERVATIONS
... following experiment. Poke one wooden skewer into each Moon so that the students can hold the Moon up. Divide the students into groups of two. Make sure the students each get a turn looking at the moon and reciting the phases. The person holding the moon should call out the phases of the moon as the ...
... following experiment. Poke one wooden skewer into each Moon so that the students can hold the Moon up. Divide the students into groups of two. Make sure the students each get a turn looking at the moon and reciting the phases. The person holding the moon should call out the phases of the moon as the ...
Solar System - Wikimedia Commons
... vast mix of dust, gas, stars, and other objects that is called a galaxy. Our galaxy rotates about the center, and if you could see it from a long, long way off it would look like a wispy pin-wheel. Within our Milky Way galaxy are clouds of dust and gas where stars are born. Our Solar System was crea ...
... vast mix of dust, gas, stars, and other objects that is called a galaxy. Our galaxy rotates about the center, and if you could see it from a long, long way off it would look like a wispy pin-wheel. Within our Milky Way galaxy are clouds of dust and gas where stars are born. Our Solar System was crea ...
Spectroscopy Lecture 10
... – Found Sirius B at Northwestern’s Dearborn Observatory Procyon B found in 1895 at Lick – Was it a star that had cooled and dimmed? Spectrum of 40 Eri B observed – an A star! – It must be hot – Must have small radius to be so faint – The first “w hite dwarf” Adams found Sirius B is also an A star ...
... – Found Sirius B at Northwestern’s Dearborn Observatory Procyon B found in 1895 at Lick – Was it a star that had cooled and dimmed? Spectrum of 40 Eri B observed – an A star! – It must be hot – Must have small radius to be so faint – The first “w hite dwarf” Adams found Sirius B is also an A star ...
Chapter 14 The Milky Way Galaxy
... luminosity; knowing their apparent magnitude allows us to calculate the distance. • Cepheids have a luminosity that is strongly correlated with the period of their oscillations; once the period is measured, the luminosity is known and we can proceed as above. ...
... luminosity; knowing their apparent magnitude allows us to calculate the distance. • Cepheids have a luminosity that is strongly correlated with the period of their oscillations; once the period is measured, the luminosity is known and we can proceed as above. ...
PDF format
... • Hellish conditions due to an extreme greenhouse effect • Even hotter than Mercury: 470!C, day and night © 2014 Pearson Education, Inc. ...
... • Hellish conditions due to an extreme greenhouse effect • Even hotter than Mercury: 470!C, day and night © 2014 Pearson Education, Inc. ...
Symplectic map description of Halley’s comet dynamics
... and the total SS mass which explains the different kick function magnitude observed in Fig. 3. As Venus, Earth and Mars have semi axis of the order of Halley’s comet perihelion, the associated kick functions are peaked for phases x giving large transfer of energy. For those planets the kick function ...
... and the total SS mass which explains the different kick function magnitude observed in Fig. 3. As Venus, Earth and Mars have semi axis of the order of Halley’s comet perihelion, the associated kick functions are peaked for phases x giving large transfer of energy. For those planets the kick function ...
Comets and the Age of the Solar System
... so far is that of Slusher1). The case is usually made as follows. The standard model of a comet is one in which all of the material observed is released by an icy nucleus only a few kilometres across. This model strongly suggests that comets are very fragile, losing much of their material during eac ...
... so far is that of Slusher1). The case is usually made as follows. The standard model of a comet is one in which all of the material observed is released by an icy nucleus only a few kilometres across. This model strongly suggests that comets are very fragile, losing much of their material during eac ...
memphis astronomical society short course in astronomy 2015
... The use of Cepheid variables as “yardsticks” to nearby galaxies; distance determinations to more remote galaxies; the red shift and Hubble’s constant; the “Big Bang” and the expanding Universe; the age of the Universe. https://www.youtube.com/watch?v=q-iqyO-YmZs Questions: Define and explain “red sh ...
... The use of Cepheid variables as “yardsticks” to nearby galaxies; distance determinations to more remote galaxies; the red shift and Hubble’s constant; the “Big Bang” and the expanding Universe; the age of the Universe. https://www.youtube.com/watch?v=q-iqyO-YmZs Questions: Define and explain “red sh ...
Document
... 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the Sun? 5. When a star forms, why does it end up with only a fraction of the available matter? 6. What do star clusters tell us about the fo ...
... 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the Sun? 5. When a star forms, why does it end up with only a fraction of the available matter? 6. What do star clusters tell us about the fo ...
Nebula Beginnings - University of Dayton
... of stars far more massive than our Sun. The precursor star to this remnant, which was located slightly below and left of center in the image, is estimated to have been 25 times the mass of our Sun. These stars "cook" heavier elements through nuclear fusion, including oxygen, nitrogen, carbon, iron e ...
... of stars far more massive than our Sun. The precursor star to this remnant, which was located slightly below and left of center in the image, is estimated to have been 25 times the mass of our Sun. These stars "cook" heavier elements through nuclear fusion, including oxygen, nitrogen, carbon, iron e ...
Gilmore - Astrometry and Astrophysics in the Gaia sky
... distances to 1% for 18 million stars to 2.5 kpc distances to 10% for 150 million stars to 25 kpc rare stellar types and rapid evolutionary phases in large numbers parallax calibration of all distance indicators e.g. Cepheids and RR Lyrae to LMC/SMC ...
... distances to 1% for 18 million stars to 2.5 kpc distances to 10% for 150 million stars to 25 kpc rare stellar types and rapid evolutionary phases in large numbers parallax calibration of all distance indicators e.g. Cepheids and RR Lyrae to LMC/SMC ...
The Anglo-Australian Planet Search – XXI. A Gas-Giant
... planets with periods of near one year are themselves of great intrinsic interest, because (as was realised by most researchers soon after the first gas-giant planets were discovered within 1 AU – see e.g. Williams et al. 1997) they are likely to host their own satellite systems, which could well be ...
... planets with periods of near one year are themselves of great intrinsic interest, because (as was realised by most researchers soon after the first gas-giant planets were discovered within 1 AU – see e.g. Williams et al. 1997) they are likely to host their own satellite systems, which could well be ...
Scientists of the Scientific Revolution
... • Aristarchus figured out how to measure the distances to and sizes of the Sun and the Moon. Because he deduced that the Sun was so much bigger than the moon, he concluded that the Earth must therefore revolve around the Sun. • Aristarchus' measurement was probably off because first, it is hard to d ...
... • Aristarchus figured out how to measure the distances to and sizes of the Sun and the Moon. Because he deduced that the Sun was so much bigger than the moon, he concluded that the Earth must therefore revolve around the Sun. • Aristarchus' measurement was probably off because first, it is hard to d ...
Star Classification and its Connection to Exoplanets.
... exoplanets, at 38%. The second pie chart uses data from the percentage of stars that have planets, so at around 6.6% of a total of around 18%, G stars make up about 37%, again the dominant planet host. Looking at the inferential statistics, one can conclude even more information from the hypothesis ...
... exoplanets, at 38%. The second pie chart uses data from the percentage of stars that have planets, so at around 6.6% of a total of around 18%, G stars make up about 37%, again the dominant planet host. Looking at the inferential statistics, one can conclude even more information from the hypothesis ...
Telescopes: More Than Meets the Eye
... Parabolic Mirror: A specially curved mirror that will bend the light that reflects from its surface to a single focal point. Parabolic mirrors are used in many reflecting telescopes. Planetary Nebula: A circular nebula, composed of many types of gases, that is expanding into space. Its the result of ...
... Parabolic Mirror: A specially curved mirror that will bend the light that reflects from its surface to a single focal point. Parabolic mirrors are used in many reflecting telescopes. Planetary Nebula: A circular nebula, composed of many types of gases, that is expanding into space. Its the result of ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.