Disks around low-mass stars in extreme environments
... only from core-collapse supernovae Must have been injected into the proto-solar nebula at most a few Myr after the formation of our Sun. Our solar system formed in an environment containing high-mass stars (M✶ > 30 M⊙) ...
... only from core-collapse supernovae Must have been injected into the proto-solar nebula at most a few Myr after the formation of our Sun. Our solar system formed in an environment containing high-mass stars (M✶ > 30 M⊙) ...
Lecture Eleven (Powerpoint format)
... way through the treacherous ground that characterizes research at the frontiers of science." Frank Shu (contemporary astrophysicist) "As to relativity, I must confess that I would rather have a subject in which there would be a half dozen members of the Academy competent enough to understand at le ...
... way through the treacherous ground that characterizes research at the frontiers of science." Frank Shu (contemporary astrophysicist) "As to relativity, I must confess that I would rather have a subject in which there would be a half dozen members of the Academy competent enough to understand at le ...
Astronomy 103 Exam 2 Review
... B. DistorLon caused by light passing through the turbulent solar atmosphere C. MoLons of large amounts of gas moving out from the interior of the Sun and then back in D. The Sun’s magneLc field ...
... B. DistorLon caused by light passing through the turbulent solar atmosphere C. MoLons of large amounts of gas moving out from the interior of the Sun and then back in D. The Sun’s magneLc field ...
ASTR 1101-001 Spring 2008 - Louisiana State University
... how strong the gravitational field is around that star. (Isaac Newton’s law of universal gravitation; §4-7) • By studying the motion of planets around our Sun, astronomers have determined that the Sun has a mass of 2 x 1030 kilograms. • We cannot measure the mass of individual, isolated stars. • We ...
... how strong the gravitational field is around that star. (Isaac Newton’s law of universal gravitation; §4-7) • By studying the motion of planets around our Sun, astronomers have determined that the Sun has a mass of 2 x 1030 kilograms. • We cannot measure the mass of individual, isolated stars. • We ...
AN INTRODUCTION TO THE STARS AND CONSTELLATIONS
... would the direction of movement over the next hour be toward the west or toward the east? ...
... would the direction of movement over the next hour be toward the west or toward the east? ...
The resolved stellar populations of M32 Monachesi, Antonela
... date. Our field has an extent of 2900 × 2600 and it is located at 20 from the galactic center. We find that this CMD has a wealth of features that reveal the different stellar populations present in M32. With the aid of evolutionary models of stars at a fixed age and chemical composition for differe ...
... date. Our field has an extent of 2900 × 2600 and it is located at 20 from the galactic center. We find that this CMD has a wealth of features that reveal the different stellar populations present in M32. With the aid of evolutionary models of stars at a fixed age and chemical composition for differe ...
- ORIGINS Space Telescope
... characterize the most distant galaxies, Milky-Way, exoplanets, and the outer reaches of our Solar system. Origins will enable flagship-quality general observing programs led by the astronomical community in the 2030s. The Science and Technology Definition Team (STDT) would like to hear your science ...
... characterize the most distant galaxies, Milky-Way, exoplanets, and the outer reaches of our Solar system. Origins will enable flagship-quality general observing programs led by the astronomical community in the 2030s. The Science and Technology Definition Team (STDT) would like to hear your science ...
PowerPoint - Chandra X
... High resolution observations revealed the existence of soft (kT ~ 0.24 keV) point source of X-rays -presumably a neutron star-- embedded in a nebula of cometary morphology within the supernova remnant. Interpreting the cometary nebula as due to a pulsar wind with a bow shock due to its motion throug ...
... High resolution observations revealed the existence of soft (kT ~ 0.24 keV) point source of X-rays -presumably a neutron star-- embedded in a nebula of cometary morphology within the supernova remnant. Interpreting the cometary nebula as due to a pulsar wind with a bow shock due to its motion throug ...
The Zodiac - Alchemical.org
... Sumerians had seen these stars as Enki, their river god. He was the ruler of the waters of the Euphrates. The Assyrians saw him as half fish, half man, Oannes, god of wisdom. The Egyptians associated the constellation with the Nile. The ancient Greeks first saw these stars as Pan, half man, half goa ...
... Sumerians had seen these stars as Enki, their river god. He was the ruler of the waters of the Euphrates. The Assyrians saw him as half fish, half man, Oannes, god of wisdom. The Egyptians associated the constellation with the Nile. The ancient Greeks first saw these stars as Pan, half man, half goa ...
Goal: To understand the structure and makeup of our own Milky Way
... • So, just behind the start of star formation you have supernovae. • Just behind that you have bubbles from where all the supernovae have merged. • After that you are left with normal stars and normal space which slowly cool until they hit the next spiral arm in a few hundred million years. • With t ...
... • So, just behind the start of star formation you have supernovae. • Just behind that you have bubbles from where all the supernovae have merged. • After that you are left with normal stars and normal space which slowly cool until they hit the next spiral arm in a few hundred million years. • With t ...
Measuring Stars
... •Observe the star – determine it’s brightness B •Measure its spectral type from spectrum •Deduce its luminosity from the HertzsprungRussell Diagram •Find its distance from: L = 4d2B ...
... •Observe the star – determine it’s brightness B •Measure its spectral type from spectrum •Deduce its luminosity from the HertzsprungRussell Diagram •Find its distance from: L = 4d2B ...
the lives of stars
... continue to shine without changing for about 5 billion more years. Really large stars burn through their supply of hydrogen very quickly, so they ‘live fast and die young’! These very large stars may only be on the main sequence for 10 million years or so. Very small stars may be main sequence stars ...
... continue to shine without changing for about 5 billion more years. Really large stars burn through their supply of hydrogen very quickly, so they ‘live fast and die young’! These very large stars may only be on the main sequence for 10 million years or so. Very small stars may be main sequence stars ...
Hertzsprung-Russell Diagram
... At one end, the stars are big, hot and bright. Due to their color and size they are called blue giants, and the very largest are blue supergiants. At the other end they are small, cool and dim and are known as red dwarfs. The sun is right in the middle. ...
... At one end, the stars are big, hot and bright. Due to their color and size they are called blue giants, and the very largest are blue supergiants. At the other end they are small, cool and dim and are known as red dwarfs. The sun is right in the middle. ...
Introduction to Astronomy
... • Smaller numbers imply brighter stars. • “Apparent magnitude” is a measure of apparent brightness. Antares has mag. 1; Polaris has mag. 2; naked eye limit is about 6. Sirius has mag. –1.5. • “Absolute magnitude” is a measure of true brightness. It’s what the apparent magnitude would be if the star ...
... • Smaller numbers imply brighter stars. • “Apparent magnitude” is a measure of apparent brightness. Antares has mag. 1; Polaris has mag. 2; naked eye limit is about 6. Sirius has mag. –1.5. • “Absolute magnitude” is a measure of true brightness. It’s what the apparent magnitude would be if the star ...
Star Planet - Stony Brook Astronomy
... 3000 yr to counts all the stars in the MW, one per second ...
... 3000 yr to counts all the stars in the MW, one per second ...
ASTR 105 Intro Astronomy: The Solar System
... image. In looking out into space, we are looking back in time! – The farther away we look in distance, the further back we look in time. ...
... image. In looking out into space, we are looking back in time! – The farther away we look in distance, the further back we look in time. ...
Our Sun, Sol - Hobbs High School
... • A pulsar (pulsating star) is a highly magnetized, spinning neutron star with jets of particles moving almost at the speed of light streaming out above its magnetic poles. • These jets produce very powerful beams of light. • The precise periods of pulsars make them useful tools to astronomers. ...
... • A pulsar (pulsating star) is a highly magnetized, spinning neutron star with jets of particles moving almost at the speed of light streaming out above its magnetic poles. • These jets produce very powerful beams of light. • The precise periods of pulsars make them useful tools to astronomers. ...
Geography
... find the Big Dipper. Draw a straight line between the two stars of the Big Dipper as shown, toward the Little Dipper. The North Star is located at the end of the handle of the Little Dipper. The Polestar is the brightest of the Little Dipper stars. ...
... find the Big Dipper. Draw a straight line between the two stars of the Big Dipper as shown, toward the Little Dipper. The North Star is located at the end of the handle of the Little Dipper. The Polestar is the brightest of the Little Dipper stars. ...
nebula - Harding University
... This pulsating variable was discovered in 1595 by a Dutch minister and amateur astronomer David Fabricius. He noted the Omicron Ceti varied in apparent brightness – sometimes being bright enough to see with the naked eye, and sometimes fading completely from view. By 1660, astronomers realized t ...
... This pulsating variable was discovered in 1595 by a Dutch minister and amateur astronomer David Fabricius. He noted the Omicron Ceti varied in apparent brightness – sometimes being bright enough to see with the naked eye, and sometimes fading completely from view. By 1660, astronomers realized t ...
Properties of Stars
... If a star contains hydrogen and helium, what would its spectrum look like? ...
... If a star contains hydrogen and helium, what would its spectrum look like? ...
The Life Cycle of Stars Stars are a fascinating part of our universe
... (97%) and Helium (3%) gas. Gravity causes the dust and gas to clump together. The number of atoms in the clump increases and the mass of the clump increases. This initial mass determines the mass of the star. As the gravitational attraction in the nebula grows the clump contracts and flattens into a ...
... (97%) and Helium (3%) gas. Gravity causes the dust and gas to clump together. The number of atoms in the clump increases and the mass of the clump increases. This initial mass determines the mass of the star. As the gravitational attraction in the nebula grows the clump contracts and flattens into a ...
Properties of Stars
... would be easier and more helpful, since we know a lot about the Sun and it is a star. Let’s get rid of the constants ! ...
... would be easier and more helpful, since we know a lot about the Sun and it is a star. Let’s get rid of the constants ! ...
Part II: Ideas in Conflict.
... galaxy was nearly 220 Mpc from us – farther from us that any previously observed galaxy. For this radio source to produce a radio signal large enough to be detected by a back-yard radio telescope, and to be that far away it must be emitting a HUGE amount of energy – hundreds of times the output of ...
... galaxy was nearly 220 Mpc from us – farther from us that any previously observed galaxy. For this radio source to produce a radio signal large enough to be detected by a back-yard radio telescope, and to be that far away it must be emitting a HUGE amount of energy – hundreds of times the output of ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.