Isaac Newton
... sent to other worlds have changed this a little, but stars and galaxies are so far away that, for the most part, professional astronomers continue to observe at a distance. Today’s technology, however, has improved the process of observing enormously. Once restricted to logging the light coming from ...
... sent to other worlds have changed this a little, but stars and galaxies are so far away that, for the most part, professional astronomers continue to observe at a distance. Today’s technology, however, has improved the process of observing enormously. Once restricted to logging the light coming from ...
ISA_lecture01 - School of Physics
... Astrophysics has long been one of the driving forces for the advancement of physics in general. It has been closely linked to advances in quantum mechanics and nuclear physics in particular. Stellar astrophysics in particular is also firmly rooted in classical physics - the familiar laws of mechanic ...
... Astrophysics has long been one of the driving forces for the advancement of physics in general. It has been closely linked to advances in quantum mechanics and nuclear physics in particular. Stellar astrophysics in particular is also firmly rooted in classical physics - the familiar laws of mechanic ...
Astrobiological Stoichiometry
... from the work of Hinkel (2012), illustrates how different research groups measured the elements Na, Si, O, Sc, Al, and Fe in five different stars (the data sets are discussed and the research groups identified by Hinkel, 2012). The maximum abundance measurement minus the minimum for each element wit ...
... from the work of Hinkel (2012), illustrates how different research groups measured the elements Na, Si, O, Sc, Al, and Fe in five different stars (the data sets are discussed and the research groups identified by Hinkel, 2012). The maximum abundance measurement minus the minimum for each element wit ...
Undiscovered Worlds educators guide
... the habitable zones of stars, where temperatures allow liquid water to exist. One planet in the system of Gliese 581 may be just inside the habitable zone. We visit this exoplanet to see that it could possibly sustain standing water and vegetation on its surface, much like Earth. There are several c ...
... the habitable zones of stars, where temperatures allow liquid water to exist. One planet in the system of Gliese 581 may be just inside the habitable zone. We visit this exoplanet to see that it could possibly sustain standing water and vegetation on its surface, much like Earth. There are several c ...
Small galaxies are growing smaller
... and from the Keck Telescope indicated velocity dispersions around 25 km s–1, also intermediate between the values for known dwarf galaxies and globular clusters. This was clearly a previously untenanted area of parameter space, making these a whole new species of small stellar system, which we chris ...
... and from the Keck Telescope indicated velocity dispersions around 25 km s–1, also intermediate between the values for known dwarf galaxies and globular clusters. This was clearly a previously untenanted area of parameter space, making these a whole new species of small stellar system, which we chris ...
Penentuan Jarak dalam Astronomi II
... (a) Single stars that are typically below ~8 MSun becomes red giant just after their life on the Main Sequence Red giants lose mass and evolve (often through a Planetary Nebulae stage) into White Dwarfs (b) More massive stars become supergiants Supergiants undergo Type II (and extremely massive – Ty ...
... (a) Single stars that are typically below ~8 MSun becomes red giant just after their life on the Main Sequence Red giants lose mass and evolve (often through a Planetary Nebulae stage) into White Dwarfs (b) More massive stars become supergiants Supergiants undergo Type II (and extremely massive – Ty ...
Part2
... o Individual clouds only resolved inside the Local Group by the 30m. o Individual low mass clouds only detectable inside Local Group. o Individual high mass clouds detectable with effort in nearest other groups. o Observing distant galaxies requires averaging many clouds inside a beam (that’s okay, ...
... o Individual clouds only resolved inside the Local Group by the 30m. o Individual low mass clouds only detectable inside Local Group. o Individual high mass clouds detectable with effort in nearest other groups. o Observing distant galaxies requires averaging many clouds inside a beam (that’s okay, ...
FREE Sample Here - Find the cheapest test bank for your
... 9) Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years. Answer: FALSE 10) Earth is always precisely 1 AU from the Sun. Answer: FALSE ...
... 9) Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years. Answer: FALSE 10) Earth is always precisely 1 AU from the Sun. Answer: FALSE ...
The Historical Evolution of the Telescope
... Submitted in partial fulfillment of Engineering 4H03 (Professor A.A. Harms) ...
... Submitted in partial fulfillment of Engineering 4H03 (Professor A.A. Harms) ...
Star Formation in the Local Milky Way
... 1978, Kroupa 2002, Chabrier 2003). In addition, infrared studies of local, very young star clusters provided independent determinations of the IMF over an even larger dynamic range in mass, from the deuterium burning limit to OB stars (e.g., Muench et al. 2002). These studies have found that the sha ...
... 1978, Kroupa 2002, Chabrier 2003). In addition, infrared studies of local, very young star clusters provided independent determinations of the IMF over an even larger dynamic range in mass, from the deuterium burning limit to OB stars (e.g., Muench et al. 2002). These studies have found that the sha ...
PPS
... discovery that light can be split into its component colours in this way. The spectrum can then be photographed and studied in detail. The positions and strengths of the lines in the spectrum can also be determined electronically, using suitable detectors attached directly to the telescopes or desig ...
... discovery that light can be split into its component colours in this way. The spectrum can then be photographed and studied in detail. The positions and strengths of the lines in the spectrum can also be determined electronically, using suitable detectors attached directly to the telescopes or desig ...
P - Inaf
... (our final sample consists of 11 296 centrals and 7053 satellites), at least the final sample of model galaxies is biased in a similar way as the real data, thus allowing for a more meaningful comparison.2 Fig. 6 shows the average metallicity and mass-weighted stellar ages of the W08 model galaxies ...
... (our final sample consists of 11 296 centrals and 7053 satellites), at least the final sample of model galaxies is biased in a similar way as the real data, thus allowing for a more meaningful comparison.2 Fig. 6 shows the average metallicity and mass-weighted stellar ages of the W08 model galaxies ...
the solar neighborhood. xi. the trigonometric parallax of scr
... used; details of these are shown in Table 2. These also provide a 9 yr baseline, ideal for measuring an accurate proper motion. Each plate was scanned individually on SuperCOSMOS and processed using standard methods (Hambly et al. 2001b and references therein). Global astrometric plate solutions res ...
... used; details of these are shown in Table 2. These also provide a 9 yr baseline, ideal for measuring an accurate proper motion. Each plate was scanned individually on SuperCOSMOS and processed using standard methods (Hambly et al. 2001b and references therein). Global astrometric plate solutions res ...
Who Invented the Telescope?
... The first person to apply for a patent for a telescope was a Dutch eyeglass maker named Hans Lippershey (or Lipperhey). In 1608, Lippershey tried to lay claim on a device with threetimes magnification. His telescope had a concave eyepiece aligned with a convex objective lens. One story goes that ...
... The first person to apply for a patent for a telescope was a Dutch eyeglass maker named Hans Lippershey (or Lipperhey). In 1608, Lippershey tried to lay claim on a device with threetimes magnification. His telescope had a concave eyepiece aligned with a convex objective lens. One story goes that ...
The Cosmic Perspective Our Galaxy
... b) Dust grains scatter blue light and let red light pass through, similar to the blue sky and red sunsets in our atmosphere. c) The blue color is due to the scattering of light by interstellar dust grains and the red color arises from hydrogen emissions. d) The blue light comes from young, hot st ...
... b) Dust grains scatter blue light and let red light pass through, similar to the blue sky and red sunsets in our atmosphere. c) The blue color is due to the scattering of light by interstellar dust grains and the red color arises from hydrogen emissions. d) The blue light comes from young, hot st ...
WELCOME TO THE MILKY WAY
... moment that day and night are exactly 12 h long again. The Sun is then in the constellation of Virgo, where the ecliptic cuts the celestial equator again. Figure 2.3 illustrates the autumnal point in relation to the galactic plane. These four important moments in a year announce the start of a new s ...
... moment that day and night are exactly 12 h long again. The Sun is then in the constellation of Virgo, where the ecliptic cuts the celestial equator again. Figure 2.3 illustrates the autumnal point in relation to the galactic plane. These four important moments in a year announce the start of a new s ...
FREE Sample Here
... 9) Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years. Answer: FALSE 10) Earth is always precisely 1 AU from the Sun. Answer: FALSE ...
... 9) Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years. Answer: FALSE 10) Earth is always precisely 1 AU from the Sun. Answer: FALSE ...
Lecture-25 Notes - Georgia Southern University Astrophysics
... These massive galaxies (and their super-massive black holes) had formed before the universe was 1-billion years old!! A z = 7.1 QSO has recently been discovered. It formed ~300-million years after the creation of the universe!! ...
... These massive galaxies (and their super-massive black holes) had formed before the universe was 1-billion years old!! A z = 7.1 QSO has recently been discovered. It formed ~300-million years after the creation of the universe!! ...
Planets Orbiting the Sun and Other Stars - Beck-Shop
... being a planet with a moon), is now called a dwarf planet together with Eris and its satellite Dysnomia and other discovered bodies such as Haumea and Makemake (and, perhaps rather surprisingly, Ceres of the asteroids so different in composition and so far away). Eris is the largest body found so far ...
... being a planet with a moon), is now called a dwarf planet together with Eris and its satellite Dysnomia and other discovered bodies such as Haumea and Makemake (and, perhaps rather surprisingly, Ceres of the asteroids so different in composition and so far away). Eris is the largest body found so far ...
129 DYNAMICAL STREAMS IN THE SOLAR NEIGHBOURHOOD B
... the Galaxy has dramatic consequences: • The radial displacements have to be taken into account if one wants to describe the past evolution of the Galaxy, and this is very hard to do because the signature of these events vanishes rapidly (the observed peculiar motions are recent – about 100 Myrs). Th ...
... the Galaxy has dramatic consequences: • The radial displacements have to be taken into account if one wants to describe the past evolution of the Galaxy, and this is very hard to do because the signature of these events vanishes rapidly (the observed peculiar motions are recent – about 100 Myrs). Th ...
Summer 2014 Mercury - Astronomical Society of the Pacific
... that the five new moons were just background stars. While his discovery skills may have been wanting, Rheita was a pioneer in optics, as he improved Kepler’s two-lens inverting eyepiece by making it much sharper. He proposed a three-lens form, which later evolved into the four-lens form that is stil ...
... that the five new moons were just background stars. While his discovery skills may have been wanting, Rheita was a pioneer in optics, as he improved Kepler’s two-lens inverting eyepiece by making it much sharper. He proposed a three-lens form, which later evolved into the four-lens form that is stil ...
November - Hawaiian Astronomical Society
... asteroids. However, new technology has also opened up new avenues. Amateurs, called “citizen scientists” by some, have just helped discover a planet using data from the Kepler mission that continuously monitors a large number of stars for evidence of transiting planets. Kepler data can be viewed at ...
... asteroids. However, new technology has also opened up new avenues. Amateurs, called “citizen scientists” by some, have just helped discover a planet using data from the Kepler mission that continuously monitors a large number of stars for evidence of transiting planets. Kepler data can be viewed at ...
Our galaxy - School of Physics
... We don’t know what this matter is. We only know it is there because we can see the effects of its gravity on the orbits of the stars and gas. We call this the dark matter problem, which states that the halo of our Galaxy is filled with a mysterious dark matter of unknown composition and type. ...
... We don’t know what this matter is. We only know it is there because we can see the effects of its gravity on the orbits of the stars and gas. We call this the dark matter problem, which states that the halo of our Galaxy is filled with a mysterious dark matter of unknown composition and type. ...
eROSITA Mission Definition Document
... black holes residing in the centre of almost every galaxy, swallowing stars and gas. It was only realized in recent years, that most of this energy output must be obscured in the galaxies behind thick veils of gas and dust. Only in ranges of the electromagnetic spectrum, where the light can penetrat ...
... black holes residing in the centre of almost every galaxy, swallowing stars and gas. It was only realized in recent years, that most of this energy output must be obscured in the galaxies behind thick veils of gas and dust. Only in ranges of the electromagnetic spectrum, where the light can penetrat ...
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.