NEXT MEETING 7:30 p.m., Monday, November 3, 2014
... “The beauty of this technique, as I watch my star and make measurements, is any change is entirely due to my star. The quasar just sits there. That’s the difference between optical and radio techniques,” Melis said. The researchers used the Very Long Baseline Array, a network of 10 telescopes spread ...
... “The beauty of this technique, as I watch my star and make measurements, is any change is entirely due to my star. The quasar just sits there. That’s the difference between optical and radio techniques,” Melis said. The researchers used the Very Long Baseline Array, a network of 10 telescopes spread ...
Lecture 4: Telescopes Web site Stuff from last time Naked eye and magnitudes
... Thomas Harriot actually observed the moon with a telescope prior to Galileo (April 1609), but his work was not published until much later. (Remember this general rule: Publish or Perish!) ...
... Thomas Harriot actually observed the moon with a telescope prior to Galileo (April 1609), but his work was not published until much later. (Remember this general rule: Publish or Perish!) ...
9/28/16 Wednesday Parallax Lab
... Now, have your lab partner move the pen twice the original distance to you, to approximately the end of the meter stick. When you alternate opening and closing each eye does the pen appear to move more or less than before? Try to quantify how much more or less (twice as much? half as much? three tim ...
... Now, have your lab partner move the pen twice the original distance to you, to approximately the end of the meter stick. When you alternate opening and closing each eye does the pen appear to move more or less than before? Try to quantify how much more or less (twice as much? half as much? three tim ...
Sun - UNT Physics
... WHAT ARE THE INVARIANTS IN THE UNIVERSE? “CONSTELLATIONS” CON: CONSTANT STELLAR: STAR ...
... WHAT ARE THE INVARIANTS IN THE UNIVERSE? “CONSTELLATIONS” CON: CONSTANT STELLAR: STAR ...
The Planetarium Fleischmann Planetarium
... the other may lie in the orbital plane of the two stars. The astronomers also believe the disks formed during two separate epochs of mass loss by the dying star. The inner disk was formed about 6,600 years ago; the outer ring, about 12,000 years ago. The inner disk is expanding slightly faster than ...
... the other may lie in the orbital plane of the two stars. The astronomers also believe the disks formed during two separate epochs of mass loss by the dying star. The inner disk was formed about 6,600 years ago; the outer ring, about 12,000 years ago. The inner disk is expanding slightly faster than ...
Transcript - Chandra X
... will concentrate on stars and stellar evolution. As in 2016, the specific focus for the 2017 competition is the properties and evolutionary stages for stars – especially star formation regions and supernova remnants – as observed across the entire electromagnetic spectrum. Each team may bring two 8. ...
... will concentrate on stars and stellar evolution. As in 2016, the specific focus for the 2017 competition is the properties and evolutionary stages for stars – especially star formation regions and supernova remnants – as observed across the entire electromagnetic spectrum. Each team may bring two 8. ...
chapter 2
... A star speckled night sky filled the minds of men with awe, not only in the past but also at present. From the ancient time, man has observed stars and planets appearing in the night sky and he has come up with various theories about them. Accordingly, astronomy can be considered as the oldest scien ...
... A star speckled night sky filled the minds of men with awe, not only in the past but also at present. From the ancient time, man has observed stars and planets appearing in the night sky and he has come up with various theories about them. Accordingly, astronomy can be considered as the oldest scien ...
Space Olympics Tasks 98
... 3. To fill a tank of petroleum a pump with efficiency of 20 kg/min is used. Find the necessary time for filling a tank with a size of 3x2x1.5 m. 4. There are 8 completely identical spheres. In one of them a small hole is made. Using only two weighings on an analytical balance, find which this sphere ...
... 3. To fill a tank of petroleum a pump with efficiency of 20 kg/min is used. Find the necessary time for filling a tank with a size of 3x2x1.5 m. 4. There are 8 completely identical spheres. In one of them a small hole is made. Using only two weighings on an analytical balance, find which this sphere ...
Low mass stars
... Most stars have properties within the shaded region known as the main sequence. The points plotted here are for stars lying within about 5 pc of the Sun. The diagonal lines correspond to constant stellar radius, so that stellar size can be represented on the same diagram as luminosity and temperatur ...
... Most stars have properties within the shaded region known as the main sequence. The points plotted here are for stars lying within about 5 pc of the Sun. The diagonal lines correspond to constant stellar radius, so that stellar size can be represented on the same diagram as luminosity and temperatur ...
First Stars II
... The collapse velocity is slower. (why? the effect of rotation, initial condition, turbulence) ...
... The collapse velocity is slower. (why? the effect of rotation, initial condition, turbulence) ...
Lecture 9: Post-main sequence evolution of stars Lifespan on the
... This core contracts (having no internal energy source), and so T0 rises, and the extra energy released in the H-burning shell causes the outer envelope of the star to expand - the star ...
... This core contracts (having no internal energy source), and so T0 rises, and the extra energy released in the H-burning shell causes the outer envelope of the star to expand - the star ...
Stories in the Stars
... galaxy, smaller and less symmetrical than a globular cluster. Optical binary. Pair of stars that appear to be related because they seem close together, but are actually at very different distances from the Earth. Orbit. Path followed by one object around another. Precession. Slow, toplike motion of ...
... galaxy, smaller and less symmetrical than a globular cluster. Optical binary. Pair of stars that appear to be related because they seem close together, but are actually at very different distances from the Earth. Orbit. Path followed by one object around another. Precession. Slow, toplike motion of ...
HR DIAGRAM (Page 1) - McDonald Observatory
... instance, the faintest stars our eyes alone may see are apparent magnitude 6. A fairly bright star like Sirius is magnitude -1.4, while the sun is a blinding -26. For each single step up or down on the magnitude scale, the brightness changes by a factor of 2.512. And for every five steps, the bright ...
... instance, the faintest stars our eyes alone may see are apparent magnitude 6. A fairly bright star like Sirius is magnitude -1.4, while the sun is a blinding -26. For each single step up or down on the magnitude scale, the brightness changes by a factor of 2.512. And for every five steps, the bright ...
Attitude Determination and Control
... c ps center of solar radiation pressure c g center of gravity W Fs solar flux density 2 m c speed of light As area of illuminate d surface ...
... c ps center of solar radiation pressure c g center of gravity W Fs solar flux density 2 m c speed of light As area of illuminate d surface ...
(Mike Riddle CTI)-84_eng_cr_v4.0
... “Stars are formed by the gravitational collapse of cool dense gas and dust clouds…. There are problems, however, in initiating the collapse of a gas cloud. It resists collapse because of firstly its internal motions and the heating effects of nearby stars, secondly the centrifugal support due to rot ...
... “Stars are formed by the gravitational collapse of cool dense gas and dust clouds…. There are problems, however, in initiating the collapse of a gas cloud. It resists collapse because of firstly its internal motions and the heating effects of nearby stars, secondly the centrifugal support due to rot ...
Document
... flushing behind the men’s ears subsided. “I will make you a deal,” he said, “your thing here can only erupt once a year, for the sake of my domain and Mt.Olympus.” the gods agreed. It was July then, and about to be fall. Aeolus decided to name the object a volcano. • What the gods didn’t know was th ...
... flushing behind the men’s ears subsided. “I will make you a deal,” he said, “your thing here can only erupt once a year, for the sake of my domain and Mt.Olympus.” the gods agreed. It was July then, and about to be fall. Aeolus decided to name the object a volcano. • What the gods didn’t know was th ...
Universe Discovery Guides: January
... If we reduce the Sun to the size of a grain of sand, an 18" diameter beach ball would be about the size of Betelgeuse. Next time you are at the beach, pick up a grain of sand and compare it to your beach ball. Oxygen and silicon are the elements in that grain of sand and were made inside stars like ...
... If we reduce the Sun to the size of a grain of sand, an 18" diameter beach ball would be about the size of Betelgeuse. Next time you are at the beach, pick up a grain of sand and compare it to your beach ball. Oxygen and silicon are the elements in that grain of sand and were made inside stars like ...
The mystery of cosmic oceans and dunes Earth
... Planets are understood to form alongside stars. As matter condenses under gravity to form the star, the surrounding circulating matter begins to flatten into a protoplanetary disk, a little like a spun clump of dough flattening to form a pizza base. Matter in this disk coalesces to form planets. Sev ...
... Planets are understood to form alongside stars. As matter condenses under gravity to form the star, the surrounding circulating matter begins to flatten into a protoplanetary disk, a little like a spun clump of dough flattening to form a pizza base. Matter in this disk coalesces to form planets. Sev ...
Here
... • To get an understanding of how a star works, the most useful thing to do is to measure the spectral energy distribution, which is a plot of the intensity of the photons vs. their wavelengths (or frequencies or energies). • There are two ways to do this: “Broad band”, by taking images with a came ...
... • To get an understanding of how a star works, the most useful thing to do is to measure the spectral energy distribution, which is a plot of the intensity of the photons vs. their wavelengths (or frequencies or energies). • There are two ways to do this: “Broad band”, by taking images with a came ...
January 2015 - Newbury Astronomical Society
... scattered that they are not included in the Messier Catalogue. Taurus can be seen at the centre of the chart above, sitting astride the ecliptic. In the north west of Taurus is the beautiful Open Custer Messier 45 (M45) also known as the Pleiades or (the Seven Sisters). Joined to Taurus at the star ...
... scattered that they are not included in the Messier Catalogue. Taurus can be seen at the centre of the chart above, sitting astride the ecliptic. In the north west of Taurus is the beautiful Open Custer Messier 45 (M45) also known as the Pleiades or (the Seven Sisters). Joined to Taurus at the star ...
15.1 Introduction
... Annu. Rev. Astro. Astrophys. 2007.45:177-219. Downloaded from arjournals.annualreviews.org by STEWARD OBSERVATORY on 03/24/08. For personal use only. ...
... Annu. Rev. Astro. Astrophys. 2007.45:177-219. Downloaded from arjournals.annualreviews.org by STEWARD OBSERVATORY on 03/24/08. For personal use only. ...
– 1 – 1. Cosmochronology
... specific star if the lifetime of the decaying isotope is known (that is usually well known from lab measurements), if the initial abundance of the decaying isotope is known, and if the current isotopic abundance, or the abundance of the product of the decay (sometimes called the “daughter”), can be ...
... specific star if the lifetime of the decaying isotope is known (that is usually well known from lab measurements), if the initial abundance of the decaying isotope is known, and if the current isotopic abundance, or the abundance of the product of the decay (sometimes called the “daughter”), can be ...
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.