transparencies
... one site into the star propagates with a finite velocity inside the star and a sudden modification of the radius occurs. Non radial modes develops and GW bursts can be emitted before a new equilibrium configuration is reached ...
... one site into the star propagates with a finite velocity inside the star and a sudden modification of the radius occurs. Non radial modes develops and GW bursts can be emitted before a new equilibrium configuration is reached ...
Primordial planets, comets and moons foster life in the cosmos
... would be extremely rare and confined to local star systems. For HGD cosmology (Fig. 2 bottom), the 1013 -1016 s interval has many stars and warm planets, and is the optimum time period for life to appear and for its first seeds to be widely scattered on cosmic scales. Plasma-protogalaxies form near ...
... would be extremely rare and confined to local star systems. For HGD cosmology (Fig. 2 bottom), the 1013 -1016 s interval has many stars and warm planets, and is the optimum time period for life to appear and for its first seeds to be widely scattered on cosmic scales. Plasma-protogalaxies form near ...
Galaxy Questions Info
... containing spiral arms, and a halo. Elliptical galaxies have a bulgeshape and a halo, but do not have a disk. Bulge — A round structure made primarily of old stars, gas, and dust. The bulge of the Milky Way is roughly 10,000 light-years across. The outer parts of the bulge are difficult to distingui ...
... containing spiral arms, and a halo. Elliptical galaxies have a bulgeshape and a halo, but do not have a disk. Bulge — A round structure made primarily of old stars, gas, and dust. The bulge of the Milky Way is roughly 10,000 light-years across. The outer parts of the bulge are difficult to distingui ...
Habitable Planets Webquest
... 1. What happens to the “planet” as it’s moved around the solar system? Step 8 : Search “What Makes a Planer Habitable” from BBC or open up: http://www.bbc.com/news/scienceenvironment-33929851 Answer these questions about it: 1. Water is thought to be what? ___________________________________________ ...
... 1. What happens to the “planet” as it’s moved around the solar system? Step 8 : Search “What Makes a Planer Habitable” from BBC or open up: http://www.bbc.com/news/scienceenvironment-33929851 Answer these questions about it: 1. Water is thought to be what? ___________________________________________ ...
4.1 Detectability of extrasolar planets
... Mission 1: Broad and systematic studies of the extrasolar planet population in the solar neighborhood. Both 30-m and 50-m telescopes can begin to image planets in reflected rather than emitted light, allowing overlap between imaging and Doppler searches, and extending the statistics of our knowledge ...
... Mission 1: Broad and systematic studies of the extrasolar planet population in the solar neighborhood. Both 30-m and 50-m telescopes can begin to image planets in reflected rather than emitted light, allowing overlap between imaging and Doppler searches, and extending the statistics of our knowledge ...
PDF
... available catalogues, astrometric or not, proves valuable to science. Anything changing positions at timescales larger than 10 years would not be properly measured by Gaia but when combined with older and good enough data, this can yield new valuable information on such objects. Gaia’s name original ...
... available catalogues, astrometric or not, proves valuable to science. Anything changing positions at timescales larger than 10 years would not be properly measured by Gaia but when combined with older and good enough data, this can yield new valuable information on such objects. Gaia’s name original ...
Galaxies - WordPress.com
... wavelength shortens, and the light shifts towards the blue end of the color spectrum. If an object is moving away fom us, its wavelength gets longer, and the light shifts towards the red end of the ...
... wavelength shortens, and the light shifts towards the blue end of the color spectrum. If an object is moving away fom us, its wavelength gets longer, and the light shifts towards the red end of the ...
Assignment 10
... million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. the black hole at the center is really another galaxy that our Milky Way swallowed; none of its material comes f ...
... million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. the black hole at the center is really another galaxy that our Milky Way swallowed; none of its material comes f ...
12 The Milky Way - Journigan-wiki
... correctly placed the Sun within the galaxy, but he grossly overestimated the size. Kapteyn came closer to the actual size of our Galaxy. Neither knew of the attenuating effects of interstellar gases. Neither knew that there were two types of variable stars. Looking back at the controversy, it’s funn ...
... correctly placed the Sun within the galaxy, but he grossly overestimated the size. Kapteyn came closer to the actual size of our Galaxy. Neither knew of the attenuating effects of interstellar gases. Neither knew that there were two types of variable stars. Looking back at the controversy, it’s funn ...
ASTR-1020: Astronomy II Course Lecture Notes - Faculty
... Lithium is rapidly depleted under these high temperatures. This occurs by a collision of Lithium-7 and a proton producing two Helium-4 nuclei. The temperature necessary for this reaction is just below the temperature necessary for hydrogen fusion. ...
... Lithium is rapidly depleted under these high temperatures. This occurs by a collision of Lithium-7 and a proton producing two Helium-4 nuclei. The temperature necessary for this reaction is just below the temperature necessary for hydrogen fusion. ...
RR animation
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
Sounding-rocket telescope uses new technology ultra-light
... David Content, Scott Antonille, Douglas Rabin, and Thomas Wallace Two NASA-funded programs will image the Sun and then an exoplanet: both at high angular resolution and both using the same mirror. To discover still-unknown celestial objects and to study known objects more accurately, high angular re ...
... David Content, Scott Antonille, Douglas Rabin, and Thomas Wallace Two NASA-funded programs will image the Sun and then an exoplanet: both at high angular resolution and both using the same mirror. To discover still-unknown celestial objects and to study known objects more accurately, high angular re ...
dtu7ech11 - Fort Thomas Independent Schools
... • that the distances to many nearby stars can be measured directly, while the distances to farther ones are determined indirectly • the observed properties of stars on which astronomers base their models of stellar evolution • how astronomers analyze starlight to determine a star’s temperature and c ...
... • that the distances to many nearby stars can be measured directly, while the distances to farther ones are determined indirectly • the observed properties of stars on which astronomers base their models of stellar evolution • how astronomers analyze starlight to determine a star’s temperature and c ...
High resolution spectroscopy: what`s next?
... atmospheric features of the spectrum are marked. On the second panel from the top, the location of the Hα solar line (0.6563 µm) is indicated, although the solar signal is completely removed in the transmission spectrum. The signal-to-noise ratio (S/N) of the data as measured at the pseudo-continuum ...
... atmospheric features of the spectrum are marked. On the second panel from the top, the location of the Hα solar line (0.6563 µm) is indicated, although the solar signal is completely removed in the transmission spectrum. The signal-to-noise ratio (S/N) of the data as measured at the pseudo-continuum ...
AST 301 Fall 2007 AST 301: Review for Exam 3 This exam covers
... Of the numerous extrasolar planets that have been discovered, what are some of the surprising results? They are nearly all massive (e.g. like Jupiter or larger)—was this a surprise? Explain. More lower-mass planets with larger periods have been discovered as more time has elapsed since the first dis ...
... Of the numerous extrasolar planets that have been discovered, what are some of the surprising results? They are nearly all massive (e.g. like Jupiter or larger)—was this a surprise? Explain. More lower-mass planets with larger periods have been discovered as more time has elapsed since the first dis ...
SMD MISSION HANDBOOK
... the solar system. Our planet is immersed in a seemingly invisible yet exotic and inherently hostile environment. Above the protective cocoon of Earth’s atmosphere is a plasma soup composed of electrified and magnetized matter entwined with penetrating radiation and energetic particles. Our Sun’s ene ...
... the solar system. Our planet is immersed in a seemingly invisible yet exotic and inherently hostile environment. Above the protective cocoon of Earth’s atmosphere is a plasma soup composed of electrified and magnetized matter entwined with penetrating radiation and energetic particles. Our Sun’s ene ...
A rocky planet transiting a nearby low-mass star
... CAUP, Rua das Estrelas, 4150-762 Porto, Portugal. ...
... CAUP, Rua das Estrelas, 4150-762 Porto, Portugal. ...
A n A n c i e n... How Astronomers Know the Vast Scale of Cosmic Time
... In similar ways, astronomers have also found Bang to today into one calendar year. On that scale, the ways of establishing the scale of cosmic time. These dinosaurs would have flourished a mere few days ago, measurements show that the universe had its beginnings about 14 billion years ago in a very ...
... In similar ways, astronomers have also found Bang to today into one calendar year. On that scale, the ways of establishing the scale of cosmic time. These dinosaurs would have flourished a mere few days ago, measurements show that the universe had its beginnings about 14 billion years ago in a very ...
COSTAR - STScI
... Sadly for the crew and school teacher Crista McAuliffe, “Before the Challenger disaster, agency officials regularly asserted that the chance of disaster was 1 flight in 100,000”. Knowing the Challenger’s Commander, Dick Scoby, made Challenger very personal for me. All I can say about those particula ...
... Sadly for the crew and school teacher Crista McAuliffe, “Before the Challenger disaster, agency officials regularly asserted that the chance of disaster was 1 flight in 100,000”. Knowing the Challenger’s Commander, Dick Scoby, made Challenger very personal for me. All I can say about those particula ...
The Dimensions Program - Asnuntuck Community College
... Interferometer, found that the star Zeta Orionis was a double star, Figure 4. Zeta Orionis is the left most star in Orion’s belt in the constellation Orion. It is approximately 800 light-years from the Earth. The primary star has a diameter 20 times the size of Earth’s sun. Because of the increase r ...
... Interferometer, found that the star Zeta Orionis was a double star, Figure 4. Zeta Orionis is the left most star in Orion’s belt in the constellation Orion. It is approximately 800 light-years from the Earth. The primary star has a diameter 20 times the size of Earth’s sun. Because of the increase r ...
The Galaxies
... studying how the stars in our galaxy move, we can tell that most of the galaxy’s mass is in the corona, in a form that doesn’t give off light. ► It is called dark matter. ► We’re not sure what it is, although there are several very good ideas. ...
... studying how the stars in our galaxy move, we can tell that most of the galaxy’s mass is in the corona, in a form that doesn’t give off light. ► It is called dark matter. ► We’re not sure what it is, although there are several very good ideas. ...
Universe Now - Course Pages of Physics Department
... – Orbits of the planets are nearly circular and nearly in the equatorial plane of the Sun (but not exactly!). – The planets are orbiting in the same direction (also the rotation direction of the Sun), and most of them rotate in the same direction (except Venus and Uranus). – Different estimations of ...
... – Orbits of the planets are nearly circular and nearly in the equatorial plane of the Sun (but not exactly!). – The planets are orbiting in the same direction (also the rotation direction of the Sun), and most of them rotate in the same direction (except Venus and Uranus). – Different estimations of ...
A brief history of extra-solar planets - X
... • ESO STC recently approved construction at Paranal – Near to VISTA – Status as official ESO project ...
... • ESO STC recently approved construction at Paranal – Near to VISTA – Status as official ESO project ...
Lecture 1: Observations of planetary systems
... planets, and are very strongly biased towards short-period planets3 . Note also that transits provide only orbital periods and planet radii; follow-up RV observations are required to determine planet masses. Ground-based transit surveys (primarily SuperWASP and HAT) have now discovered over 100 new ...
... planets, and are very strongly biased towards short-period planets3 . Note also that transits provide only orbital periods and planet radii; follow-up RV observations are required to determine planet masses. Ground-based transit surveys (primarily SuperWASP and HAT) have now discovered over 100 new ...
Space Interferometry Mission
The Space Interferometry Mission, or SIM, also known as SIM Lite (formerly known as SIM PlanetQuest), was a planned space telescope developed by the U.S. National Aeronautics and Space Administration (NASA), in conjunction with contractor Northrop Grumman. One of the main goals of the mission was the hunt for Earth-sized planets orbiting in the habitable zones of nearby stars other than the Sun. SIM was postponed several times and finally cancelled in 2010.In addition to hunting for extrasolar planets, SIM would have helped astronomers construct a map of the Milky Way galaxy. Other important tasks would have included collecting data to help pinpoint stellar masses for specific types of stars, assisting in the determination of the spatial distribution of dark matter in the Milky Way and in the Local Group of galaxies and using the gravitational microlensing effect to measure the mass of stars.The spacecraft would have used optical interferometry to accomplish these and other scientific goals. This technique collects light with multiple mirrors (in SIM's case, two) which is combined to make an interference pattern which can be very precisely measured.The initial contracts for SIM Lite were awarded in 1998, totaling US$200 million. Work on the SIM project required scientists and engineers to move through eight specific new technology milestones, and by November 2006, all eight had been completed.SIM Lite was originally scheduled for a 2005 launch, aboard an Evolved Expendable Launch Vehicle (EELV). As a result of continued budget cuts, the launch date has been pushed back at least five times. NASA has set a preliminary launch date for 2015 and U.S. federal budget documents confirm that a launch date is expected ""no earlier"" than 2015. The budget cuts to SIM Lite are expected to continue through FY 2010. As of February 2007, many of the engineers working on the SIM program had moved on to other areas and projects, and NASA directed the project to allocate its resources toward engineering risk reduction. However, the preliminary budget for NASA for 2008 included zero dollars for SIM.In December 2007, the Congress restored funding for fiscal year 2008 as part of an omnibus appropriations bill which the President later signed. At the same time the Congress directed NASA to move the mission forward to the development phase. In 2009 the project continued its risk reduction work while waiting for the findings and recommendations of the Astronomy and Astrophysics Decadal Survey, Astro2010, performed by the National Academy of Sciences, which would determine the project's future.On 13 August 2010, the Astro2010 Decadal Report was released and did not recommend that NASA continue the development of the SIM Lite Astrometric Observatory. This prompted NASA Astronomy and Physics Director, Jon Morse, to issue a letter on 24 September 2010 to the SIM Lite project manager, informing him that NASA was discontinuing its sponsorship of the SIM Lite mission and directing the project to discontinue Phase B activities immediately or as soon as practical. Accordingly, all SIM Lite activities were closed down by the end of calendar year 2010.