ABSTRACT Exoplanet Habitability and an Analysis of Gliese 436 b
... for habitable exoplanets in the Milky Way.8 The transit method is similar to an eclipse of the moon. An exoplanet orbits in front of its host star as viewed from earth.8 A photon counting camera can then detect the decrease in perceived brightness from the host star.9 A light curve is then produced ...
... for habitable exoplanets in the Milky Way.8 The transit method is similar to an eclipse of the moon. An exoplanet orbits in front of its host star as viewed from earth.8 A photon counting camera can then detect the decrease in perceived brightness from the host star.9 A light curve is then produced ...
Full Program with Abstracts - CIERA
... This year, we mark twenty years of exploring the diversity of planets and planetary systems orbiting main sequence stars. Exoplanet discoveries spill into the thousands, and the sensitivity boundaries continue to expand. NASA's Kepler Mission unveiled a galaxy replete with small planets and revealed ...
... This year, we mark twenty years of exploring the diversity of planets and planetary systems orbiting main sequence stars. Exoplanet discoveries spill into the thousands, and the sensitivity boundaries continue to expand. NASA's Kepler Mission unveiled a galaxy replete with small planets and revealed ...
M sin i
... Planets orbit around the center of mass of the Solar system. This is located close to the center of the Sun because it is by far the most massive body. But the Sun also orbits around this barycenter. – Note that Jupiter has contains more than double the mass of all the other planets together. Jupite ...
... Planets orbit around the center of mass of the Solar system. This is located close to the center of the Sun because it is by far the most massive body. But the Sun also orbits around this barycenter. – Note that Jupiter has contains more than double the mass of all the other planets together. Jupite ...
Downloaded - Royal Society Open Science
... planetary literature; I attempt to consolidate these references. In figure 2, I characterize distances from the star in which various forces are important, or might be important. This figure may be used as a guide when modelling a particular system or set of systems. Table 1 lists some notable post- ...
... planetary literature; I attempt to consolidate these references. In figure 2, I characterize distances from the star in which various forces are important, or might be important. This figure may be used as a guide when modelling a particular system or set of systems. Table 1 lists some notable post- ...
Stellar evolution - Statistical Physics Group
... carbon burning at the centre of the star. I t is clear that it will only be a matter of time before these calculations are carried to a later stage of nuclear evolution. There are of course still some uncertainties in the basic physics of stellar interiors and these will be mentioned later. As soon ...
... carbon burning at the centre of the star. I t is clear that it will only be a matter of time before these calculations are carried to a later stage of nuclear evolution. There are of course still some uncertainties in the basic physics of stellar interiors and these will be mentioned later. As soon ...
WFC3 Science White Paper - Space Telescope Science Institute
... WFC3), is being developed for installation on HST during Servicing Mission 4, planned for 2003. Three main drivers have inspired the current design of WFC3: (1) WFC3 must be able to offer excellent visible-band imaging performance which will endure until the end of the HST mission; (2) in order to a ...
... WFC3), is being developed for installation on HST during Servicing Mission 4, planned for 2003. Three main drivers have inspired the current design of WFC3: (1) WFC3 must be able to offer excellent visible-band imaging performance which will endure until the end of the HST mission; (2) in order to a ...
The Norma cluster (ACO3627) – II. The near-infrared Ks
... of the area and the limiting magnitude (Andreon 2001). The relatively recent development of wide-field arrays such as the NICMOS (256 × 256) and HAWAII (1024 × 1024) HgCdTe detectors enabled LFs in the NIR to be determined over much larger areas than was previously possible. Up until the mid 90s, de ...
... of the area and the limiting magnitude (Andreon 2001). The relatively recent development of wide-field arrays such as the NICMOS (256 × 256) and HAWAII (1024 × 1024) HgCdTe detectors enabled LFs in the NIR to be determined over much larger areas than was previously possible. Up until the mid 90s, de ...
PDF - STRW Local - Universiteit Leiden
... Leiden Observatory is part of the Netherlands Research School for Astronomy (NOVA). Scientific research at Leiden Observatory ranges from studying how the Earth and the Solar System have formed and how this compares to other planetary systems, to the origin and evolution of the Milky Way and the Uni ...
... Leiden Observatory is part of the Netherlands Research School for Astronomy (NOVA). Scientific research at Leiden Observatory ranges from studying how the Earth and the Solar System have formed and how this compares to other planetary systems, to the origin and evolution of the Milky Way and the Uni ...
The environment of high-redshift AGN OLIMPIA JUDIT FOGASY
... mass haloes have higher virial temperatures and therefore longer cooling times and the gas is accreted in hot mode. Thus cold accretion dominates in less dense environment and hot mode accretion dominates in group and cluster environments at low redshift. By distinguishing between accretion onto hal ...
... mass haloes have higher virial temperatures and therefore longer cooling times and the gas is accreted in hot mode. Thus cold accretion dominates in less dense environment and hot mode accretion dominates in group and cluster environments at low redshift. By distinguishing between accretion onto hal ...
Galaxies
... underlying dark matter. We have started to understand how baryonic gas within the dark matter halos cools and collapses to form stars, and how the energy from star formation can feed back into the surrounding gas and regulate subsequent star formation. However, at a fundamental level we still lack a ...
... underlying dark matter. We have started to understand how baryonic gas within the dark matter halos cools and collapses to form stars, and how the energy from star formation can feed back into the surrounding gas and regulate subsequent star formation. However, at a fundamental level we still lack a ...
T3-Cosmic Star Formation History
... Cosmic Star-Formation History Piero Madau1 and Mark Dickinson2 ...
... Cosmic Star-Formation History Piero Madau1 and Mark Dickinson2 ...
Galaxies - hwchemistry
... • At the greatest distances, astronomers must calibrate the total luminosity of the galaxies themselves. – For example, studies of nearby galaxies show that an average galaxy like Milky Way has a luminosity about 16 billion times the sun’s. – If astronomers see a similar galaxy far away, they can me ...
... • At the greatest distances, astronomers must calibrate the total luminosity of the galaxies themselves. – For example, studies of nearby galaxies show that an average galaxy like Milky Way has a luminosity about 16 billion times the sun’s. – If astronomers see a similar galaxy far away, they can me ...
New brown dwarfs and giant planets
... • Finding ultracool dwarfs • The L dwarf sequence extending calibration to near-infrared wavelengths • L-dwarf binaries Separations and mass ratios • The mass function below the hydrogen-burning limit brown dwarfs and dark matter Some results and a conundrum • Heavy halo white dwarfs? ...
... • Finding ultracool dwarfs • The L dwarf sequence extending calibration to near-infrared wavelengths • L-dwarf binaries Separations and mass ratios • The mass function below the hydrogen-burning limit brown dwarfs and dark matter Some results and a conundrum • Heavy halo white dwarfs? ...
story of telescope
... may not tally with the predictions of the first model. A circle was the simplest conceivable path for an orbit, so the Greeks chose to think of circular orbits. Also, at first sight the Earth appears to be fixed, and so one tended to think in terms of a fixed Earth and everything going around it. Ad ...
... may not tally with the predictions of the first model. A circle was the simplest conceivable path for an orbit, so the Greeks chose to think of circular orbits. Also, at first sight the Earth appears to be fixed, and so one tended to think in terms of a fixed Earth and everything going around it. Ad ...
The physics of star formation
... possible the collapse of prestellar cloud cores with masses as small as one solar mass or less. The gas densities in molecular clouds vary over many orders of magnitude: the average density of an entire GMC may be of the order of 20 H2 molecules per cm3 , while the larger clumps within it may have a ...
... possible the collapse of prestellar cloud cores with masses as small as one solar mass or less. The gas densities in molecular clouds vary over many orders of magnitude: the average density of an entire GMC may be of the order of 20 H2 molecules per cm3 , while the larger clumps within it may have a ...
The physics of star formation - Yale Astronomy
... possible the collapse of prestellar cloud cores with masses as small as one solar mass or less. The gas densities in molecular clouds vary over many orders of magnitude: the average density of an entire GMC may be of the order of 20 H2 molecules per cm3 , while the larger clumps within it may have a ...
... possible the collapse of prestellar cloud cores with masses as small as one solar mass or less. The gas densities in molecular clouds vary over many orders of magnitude: the average density of an entire GMC may be of the order of 20 H2 molecules per cm3 , while the larger clumps within it may have a ...
Gravitational Bending of Light and Its Measurement with
... SIM PlanetQuest is designed as a space-based 9-m baseline optical Michelson interferometer operating in the visible waveband. This mission will open up many areas of astrophysics, via astrometry with unprecedented accuracy. Over a narrow field of view (1°), SIM aims to achieve an accuracy of 1 µas i ...
... SIM PlanetQuest is designed as a space-based 9-m baseline optical Michelson interferometer operating in the visible waveband. This mission will open up many areas of astrophysics, via astrometry with unprecedented accuracy. Over a narrow field of view (1°), SIM aims to achieve an accuracy of 1 µas i ...
Analysis of Angular Momentum in Planetary Systems and Host Stars
... primary power law of stellar mass, J ∝ M α , excluding stars of <2 solar masses. Lower mass stars rotate more slowly with and have smaller moments of inertia, and as a result they contain much less spin angular momentum. A secondary power law describes the upper bound of angular momenta of these les ...
... primary power law of stellar mass, J ∝ M α , excluding stars of <2 solar masses. Lower mass stars rotate more slowly with and have smaller moments of inertia, and as a result they contain much less spin angular momentum. A secondary power law describes the upper bound of angular momenta of these les ...
Choosing your first telescope - Caribbean Institute of Astronomy
... so that bright nebulae, galaxies and globular clusters become good targets as well. For going after faint galaxies and nebulae, an 8” telescope and a dark sky are a must. 10” and over are considered big telescopes, and would excel at all objects, but have a limited field of view. Also keep in mind t ...
... so that bright nebulae, galaxies and globular clusters become good targets as well. For going after faint galaxies and nebulae, an 8” telescope and a dark sky are a must. 10” and over are considered big telescopes, and would excel at all objects, but have a limited field of view. Also keep in mind t ...
Astronomy Astrophysics Detailed abundances of a large sample of giant stars in... and in the Sagittarius nucleus
... between the most metal-rich and most metal-poor components in the two most massive GCs in the Galaxy, confirming early results based on the Na-O anticorrelation. As in ω Cen, stars affected by most extreme processing, i.e. showing the signature of more massive polluters, are those of the metal-rich c ...
... between the most metal-rich and most metal-poor components in the two most massive GCs in the Galaxy, confirming early results based on the Na-O anticorrelation. As in ω Cen, stars affected by most extreme processing, i.e. showing the signature of more massive polluters, are those of the metal-rich c ...
Chapter 24
... Like our own Galaxy, they are simply rich enough in interstellar gas to provide for continued stellar birth. Most spirals are not seen face-on, as they are shown in Figure 24.2. Many are tilted with respect to our line of sight, making their spiral structure hard to discern. However, we do not need ...
... Like our own Galaxy, they are simply rich enough in interstellar gas to provide for continued stellar birth. Most spirals are not seen face-on, as they are shown in Figure 24.2. Many are tilted with respect to our line of sight, making their spiral structure hard to discern. However, we do not need ...
A Spectroscopically Confirmed Excess of 24 micron Sources in a
... NASA/ESA Hubble Space Telescope (GO-10499); STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555; 3) the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contrac ...
... NASA/ESA Hubble Space Telescope (GO-10499); STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555; 3) the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contrac ...
New Generation Ground-Based Optical/Infrared Telescopes
... made in detecting KBOs since then: presently over 900 KBOs have been discovered. Using several of the largest telescopes in the world, it was recently found that the largest KBO known, 2003 UB313, has methane ice on its surface and a moon (Fig. 1). This finding has challenged our definition of what ...
... made in detecting KBOs since then: presently over 900 KBOs have been discovered. Using several of the largest telescopes in the world, it was recently found that the largest KBO known, 2003 UB313, has methane ice on its surface and a moon (Fig. 1). This finding has challenged our definition of what ...
About the Hubble Space Telescope
... data in the onboard computers. The flight operations team at Goddard monitors every system on Hubble to ensure it is working properly. If not, ground controllers can intervene to remedy the problem. Over the past year, Hubble pursued its usual wide range of scientific programs, targeting objects ran ...
... data in the onboard computers. The flight operations team at Goddard monitors every system on Hubble to ensure it is working properly. If not, ground controllers can intervene to remedy the problem. Over the past year, Hubble pursued its usual wide range of scientific programs, targeting objects ran ...
Where stars form: inside-out growth and coherent star formation from
... spatially resolved spectroscopy. Because this spectrograph is slitless, it provides a spectrum for every object in its field of view. This means that for every object its field of view and wavelength coverage, the grism can be used to create a high spatial resolution emission line map. The 3D-HST le ...
... spatially resolved spectroscopy. Because this spectrograph is slitless, it provides a spectrum for every object in its field of view. This means that for every object its field of view and wavelength coverage, the grism can be used to create a high spatial resolution emission line map. The 3D-HST le ...
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.