Hubble - 15 Years of Discovery
... Since Pluto’s discovery in the 1930s, and its satellite Charon’s in the 1970s, astronomers have tried to figure out if there’s anything else out there, beyond the ninth planet. In 2003, Hubble spotted something moving fast enough across the background of faraway stars to be an object within the Sola ...
... Since Pluto’s discovery in the 1930s, and its satellite Charon’s in the 1970s, astronomers have tried to figure out if there’s anything else out there, beyond the ninth planet. In 2003, Hubble spotted something moving fast enough across the background of faraway stars to be an object within the Sola ...
The Milky Way
... 11. What measurements are needed to determine the entire mass of the Milky Way Galaxy? a. The rotational velocity of a star near the Galaxy's outer edge. b. The spectral type and luminosity class of a star near the Galaxy's outer edge. c. The distance to a star near the Galaxy's outer edge. d. Both ...
... 11. What measurements are needed to determine the entire mass of the Milky Way Galaxy? a. The rotational velocity of a star near the Galaxy's outer edge. b. The spectral type and luminosity class of a star near the Galaxy's outer edge. c. The distance to a star near the Galaxy's outer edge. d. Both ...
1:45 PM TuTh This is a one-quarter course on
... physics, or astronomy is required, though it certainly will help. It will be assumed however that the student has mastered elementary algebra, including logarithms, simple trigonometry, and fractional powers, and has some familiarity with basic scientific concepts and reasoning. Elementary calculus ...
... physics, or astronomy is required, though it certainly will help. It will be assumed however that the student has mastered elementary algebra, including logarithms, simple trigonometry, and fractional powers, and has some familiarity with basic scientific concepts and reasoning. Elementary calculus ...
Chapter 15
... 11. What measurements are needed to determine the entire mass of the Milky Way Galaxy? a. The rotational velocity of a star near the Galaxy's outer edge. b. The spectral type and luminosity class of a star near the Galaxy's outer edge. c. The distance to a star near the Galaxy's outer edge. d. Both ...
... 11. What measurements are needed to determine the entire mass of the Milky Way Galaxy? a. The rotational velocity of a star near the Galaxy's outer edge. b. The spectral type and luminosity class of a star near the Galaxy's outer edge. c. The distance to a star near the Galaxy's outer edge. d. Both ...
A rocky planet transiting a nearby low-mass star
... ±"0.018, W4"="7.916"±"0.184). The colour (V–Ks"="5.168"±"0.040) and absolute magnitude (M V"="13.088"±"0.054) of GJ 1132 are consistent with those of single M4V dwarfs 34. Metallicity of the star Before discovering the planet, we gathered a near-infrared spectrum of GJ 1132 with the FIRE spectrograp ...
... ±"0.018, W4"="7.916"±"0.184). The colour (V–Ks"="5.168"±"0.040) and absolute magnitude (M V"="13.088"±"0.054) of GJ 1132 are consistent with those of single M4V dwarfs 34. Metallicity of the star Before discovering the planet, we gathered a near-infrared spectrum of GJ 1132 with the FIRE spectrograp ...
Astro-MilkyWay
... 11. What measurements are needed to determine the entire mass of the Milky Way Galaxy? a. The rotational velocity of a star near the Galaxy's outer edge. b. The spectral type and luminosity class of a star near the Galaxy's outer edge. c. The distance to a star near the Galaxy's outer edge. d. Both ...
... 11. What measurements are needed to determine the entire mass of the Milky Way Galaxy? a. The rotational velocity of a star near the Galaxy's outer edge. b. The spectral type and luminosity class of a star near the Galaxy's outer edge. c. The distance to a star near the Galaxy's outer edge. d. Both ...
Part1
... o Along similar lines, millimeter line tracers of the ISM are key to robustly measure the dust-to-gas ratio in large systems. o CO (and other molecules) are known to be suppressed relative to other galaxy components at low metallicity. A robust guess as to the metallicity is helpful to plan observat ...
... o Along similar lines, millimeter line tracers of the ISM are key to robustly measure the dust-to-gas ratio in large systems. o CO (and other molecules) are known to be suppressed relative to other galaxy components at low metallicity. A robust guess as to the metallicity is helpful to plan observat ...
16. Properties of Stars
... • By taking observations of many stars, we can study stars in many phases of life, just as we might study how humans age by observing the humans living in a village at one time. What two basic physical properties do astronomers use to classify stars? • Stars are classified by their luminosity and su ...
... • By taking observations of many stars, we can study stars in many phases of life, just as we might study how humans age by observing the humans living in a village at one time. What two basic physical properties do astronomers use to classify stars? • Stars are classified by their luminosity and su ...
PPT
... After era probed by CMBR the Universe enters the so-called “dark ages” prior to formation of first stars ...
... After era probed by CMBR the Universe enters the so-called “dark ages” prior to formation of first stars ...
Microsoft Power Point version
... • By taking observations of many stars, we can study stars in many phases of life, just as we might study how humans age by observing the humans living in a village at one time. What two basic physical properties do astronomers use to classify stars? • Stars are classified by their luminosity and su ...
... • By taking observations of many stars, we can study stars in many phases of life, just as we might study how humans age by observing the humans living in a village at one time. What two basic physical properties do astronomers use to classify stars? • Stars are classified by their luminosity and su ...
“Breakthroughs” of the 20th Century
... being convinced that there was but one galaxy, the one that contained our Sun and Solar System. Then, in 1928, there was a breakthrough. The Universe did not just contain a single galaxy; there were actually huge numbers of them. (1999 Hubble Space Telescope observations led to an estimate of about ...
... being convinced that there was but one galaxy, the one that contained our Sun and Solar System. Then, in 1928, there was a breakthrough. The Universe did not just contain a single galaxy; there were actually huge numbers of them. (1999 Hubble Space Telescope observations led to an estimate of about ...
Chapter 17 Measuring the Stars
... Measuring Stellar Masses in Binary Stars In order to measure stellar masses in a binary star, the period and semimajor axis of the orbit must be measured. Once this is done, Kepler’s third law gives the sum of the masses of the two stars. Then the relative speeds of the two stars can be measured usi ...
... Measuring Stellar Masses in Binary Stars In order to measure stellar masses in a binary star, the period and semimajor axis of the orbit must be measured. Once this is done, Kepler’s third law gives the sum of the masses of the two stars. Then the relative speeds of the two stars can be measured usi ...
Toward a revival of Stellar Intensity Interferometry
... high-speed photon-counting instrument. The entrance pupil can be optically sliced into a hundred segments, each feeding a separate detector. Different means of electronically combining the signal in software would yield either a photometric signal of very high time-resolution using the collecting ar ...
... high-speed photon-counting instrument. The entrance pupil can be optically sliced into a hundred segments, each feeding a separate detector. Different means of electronically combining the signal in software would yield either a photometric signal of very high time-resolution using the collecting ar ...
Pre-Lab
... northern sky, the Andromeda nebulae, as it was called before its true nature was known. It is a faint fuzzy patch in the region of the sky containing the stars of the constellation Andromeda. Two galaxies, the Large and Small Magellanic Clouds, can be seen with unaided eyes in the southern sky from ...
... northern sky, the Andromeda nebulae, as it was called before its true nature was known. It is a faint fuzzy patch in the region of the sky containing the stars of the constellation Andromeda. Two galaxies, the Large and Small Magellanic Clouds, can be seen with unaided eyes in the southern sky from ...
ATA2010
... of the star forming events which built up our Galaxy Galaxies like the Milky Way are believed to form by • the infall of gas which then turns gradually to stars (most of which form in the disk of the Galaxy, in open star clusters which quickly dissolve), and also by • the accretion of smaller galaxi ...
... of the star forming events which built up our Galaxy Galaxies like the Milky Way are believed to form by • the infall of gas which then turns gradually to stars (most of which form in the disk of the Galaxy, in open star clusters which quickly dissolve), and also by • the accretion of smaller galaxi ...
CONSTELLATION TUCANA, THE TOUCAN
... light-years distant from Earth, it is thought to be around 12 billion years old. Mostly composed of old, yellow stars, it does possess a contingent of blue stragglers, hot stars that are hypothesized to form from binary star mergers. 47 Tucanae has an apparent magnitude of 3.9, meaning that it is vi ...
... light-years distant from Earth, it is thought to be around 12 billion years old. Mostly composed of old, yellow stars, it does possess a contingent of blue stragglers, hot stars that are hypothesized to form from binary star mergers. 47 Tucanae has an apparent magnitude of 3.9, meaning that it is vi ...
Early Star-Forming Galaxies
... Rodighiero used Herschel ’s far-infrared camera to look for galaxies hidden from visible-light observations because of their intervening dust. This allowed the astronomers to assemble a more complete picture of star birth than ever before. The team targeted two well-known regions of the sky that ha ...
... Rodighiero used Herschel ’s far-infrared camera to look for galaxies hidden from visible-light observations because of their intervening dust. This allowed the astronomers to assemble a more complete picture of star birth than ever before. The team targeted two well-known regions of the sky that ha ...
Chapter 6. - Department of Physics & Astronomy
... Newborn stars that would be hidden from our view in ...
... Newborn stars that would be hidden from our view in ...
Project Medley Topics
... Consider discussing the formation of the Sun, its structure and appearance, and the processes which produce sunlight. It should contain good factual information and must be at least 10 pages long. Be sure to state ahead of time the age group you plan to write for. If you choose not to keep the book, ...
... Consider discussing the formation of the Sun, its structure and appearance, and the processes which produce sunlight. It should contain good factual information and must be at least 10 pages long. Be sure to state ahead of time the age group you plan to write for. If you choose not to keep the book, ...
L The James Webb Space Telescope
... both be used to probe the Universe at the time of its own ‘first light’ — the birth of the first stars and galaxies. The radio array will map the large-scale structure of the Universe, elucidating the role in that structure of ‘dark matter’ and ‘dark energy’, as will studies of the faintest galaxies ...
... both be used to probe the Universe at the time of its own ‘first light’ — the birth of the first stars and galaxies. The radio array will map the large-scale structure of the Universe, elucidating the role in that structure of ‘dark matter’ and ‘dark energy’, as will studies of the faintest galaxies ...
Lecture1-1
... parenthesis shows the “effective wavelength” and detection limit in magnitude for point sources) with drift-scan mode of the mosaic CCD camera. Typical image size is 1.4” in r-band. ...
... parenthesis shows the “effective wavelength” and detection limit in magnitude for point sources) with drift-scan mode of the mosaic CCD camera. Typical image size is 1.4” in r-band. ...
The Mystery of Gamma Ray Bursts
... In 2002, the ESA launched its INTEGRAL satellite, carrying the Integral Burst Alert System which can detect gamma, X-ray and visible light simultaneously. GRB’s can be detected even when the instrument isn’t pointing at the source, and can relay the event to a ground network within a few seconds. An ...
... In 2002, the ESA launched its INTEGRAL satellite, carrying the Integral Burst Alert System which can detect gamma, X-ray and visible light simultaneously. GRB’s can be detected even when the instrument isn’t pointing at the source, and can relay the event to a ground network within a few seconds. An ...
RV Metric_new_8
... Space Telescope Science Institute [email protected] June 10, 2013 Abstract Known RV exoplanets are viewed as prime targets for a future high-contrast imaging mission, which may be able to detect and characterize these enigmatic objects in reflected starlight. To help define and differentiate the cand ...
... Space Telescope Science Institute [email protected] June 10, 2013 Abstract Known RV exoplanets are viewed as prime targets for a future high-contrast imaging mission, which may be able to detect and characterize these enigmatic objects in reflected starlight. To help define and differentiate the cand ...
View PDF - Sara Seager
... planet, it is possible to determine the planet’s mass and radius, its orbital parameters, and its atmospheric properties.1 Of particular interest are planets with sizes between those of the Earth and Neptune. Little is known about them, because there are no examples in the solar system. NASA’s Keple ...
... planet, it is possible to determine the planet’s mass and radius, its orbital parameters, and its atmospheric properties.1 Of particular interest are planets with sizes between those of the Earth and Neptune. Little is known about them, because there are no examples in the solar system. NASA’s Keple ...
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.