GRAVITY: Observing the Universe in Motion
... of the key experiments that will become possible with GRAVITY is illustrated on the Telescopes and Instrumentation section page (p. 6, lower panel). A unique combination with the VLTI The VLTI is the largest array of 8-metreclass telescopes that explicitly included interferometry in its design and i ...
... of the key experiments that will become possible with GRAVITY is illustrated on the Telescopes and Instrumentation section page (p. 6, lower panel). A unique combination with the VLTI The VLTI is the largest array of 8-metreclass telescopes that explicitly included interferometry in its design and i ...
Slide 1
... • Ground-Based Advantages – Larger collecting area – Better spatial resolution – Equipment easily updated ...
... • Ground-Based Advantages – Larger collecting area – Better spatial resolution – Equipment easily updated ...
Chapter 14 Neutron Stars and Black holes
... Model of the X-Ray Binary SS 433 Optical spectrum shows spectral lines from material in the jet. Two sets of lines: one blue-shifted, one red-shifted ...
... Model of the X-Ray Binary SS 433 Optical spectrum shows spectral lines from material in the jet. Two sets of lines: one blue-shifted, one red-shifted ...
Lecture 6: Multiple stars
... A typical cluster has 102 – 104 stars pc3 (compared to <1 for the field) meaning that encounters are at least 102 – 104 more frequent as the collision time goes as (see also later, r is the radius of a star or stellar system): or stellar system ...
... A typical cluster has 102 – 104 stars pc3 (compared to <1 for the field) meaning that encounters are at least 102 – 104 more frequent as the collision time goes as (see also later, r is the radius of a star or stellar system): or stellar system ...
Title: Binary interaction dominates the evolution of massive stars
... CCSNe predominantly result from mass transfer in close binaries. This rate is large enough to explain the discrepancy between the large observational fraction of Type Ib/c supernovae and the dearth of single stars stripped by stellar winds. Our results also imply that more than half of the progenito ...
... CCSNe predominantly result from mass transfer in close binaries. This rate is large enough to explain the discrepancy between the large observational fraction of Type Ib/c supernovae and the dearth of single stars stripped by stellar winds. Our results also imply that more than half of the progenito ...
An introduction to photometry and photometric measurements Henry
... presently reduced and included in the version 2.0 optical / IR catalog are given in Table 2 and plotted in Figure 3. The depth quoted is for a 5 ! measurement in a 300 aperture of an isolated point source at the median seeing given in Table 2. This should be viewed as an optimistic estimate since mo ...
... presently reduced and included in the version 2.0 optical / IR catalog are given in Table 2 and plotted in Figure 3. The depth quoted is for a 5 ! measurement in a 300 aperture of an isolated point source at the median seeing given in Table 2. This should be viewed as an optimistic estimate since mo ...
Father of the X-Ray
... • All parts of the electromagnetic spectrum are essentially the same thing: electromagnetic radiation. The only differences between them all are the frequency and wavelengths of the different types of waves. X-Rays are mostly blocked out of the atmosphere because of the frequency of the waves. Becau ...
... • All parts of the electromagnetic spectrum are essentially the same thing: electromagnetic radiation. The only differences between them all are the frequency and wavelengths of the different types of waves. X-Rays are mostly blocked out of the atmosphere because of the frequency of the waves. Becau ...
Classification_of_Stars_By_Luminosity
... He called the brightest stars in the sky first magnitude and the dimmest visible to the naked eye sixth magnitude. Stars of intermediate brightness were given intermediate values. ...
... He called the brightest stars in the sky first magnitude and the dimmest visible to the naked eye sixth magnitude. Stars of intermediate brightness were given intermediate values. ...
Science Across Disciplines
... birth of a new field of astronomy: the study of extrasolar planetary systems around main sequence stars. Since then, more than 200 planets outside our own Solar System have been discovered. These planets most closely resemble the gas giant planets, with masses in the range 20 – 3 000 M ⊕, but many o ...
... birth of a new field of astronomy: the study of extrasolar planetary systems around main sequence stars. Since then, more than 200 planets outside our own Solar System have been discovered. These planets most closely resemble the gas giant planets, with masses in the range 20 – 3 000 M ⊕, but many o ...
Direct Detection of Galactic Halo Dark Matter
... to harbor a substantial amount of unseen matter. Recent observations indirectly suggest that as much as half of this “dark matter” may be in the form of old, very cool white dwarfs, the remnants of an ancient population of stars as old as the galaxy itself. We conducted a survey to find faint, cool ...
... to harbor a substantial amount of unseen matter. Recent observations indirectly suggest that as much as half of this “dark matter” may be in the form of old, very cool white dwarfs, the remnants of an ancient population of stars as old as the galaxy itself. We conducted a survey to find faint, cool ...
Lecture ppt - UCO/Lick Observatory
... – How fast a sampling rate and control bandwidth (peak capacity)? • If you are using an existing AO system: – How long should you integrate on the wavefront sensor? How fast should the control loop run? – Is it better to use a bright guide star far away, or a dimmer star close by? – What wavelength ...
... – How fast a sampling rate and control bandwidth (peak capacity)? • If you are using an existing AO system: – How long should you integrate on the wavefront sensor? How fast should the control loop run? – Is it better to use a bright guide star far away, or a dimmer star close by? – What wavelength ...
observing manual - Texas Tech University
... need to take images of a region with no bright stars or non-stellar objects, moving the telescope a little between exposures. Under those circumstances you would use “The Sky”, move the telescope to a region of the sky containing no bright stars (nothing brighter than magnitude 8) and no non-stel ...
... need to take images of a region with no bright stars or non-stellar objects, moving the telescope a little between exposures. Under those circumstances you would use “The Sky”, move the telescope to a region of the sky containing no bright stars (nothing brighter than magnitude 8) and no non-stel ...
Question 1
... c) The Sun’s age and age of the globular cluster stars d) The motion of spiral arms and the mass of the central black hole e) The orbital period and distance from the Galactic center of objects near the edge of the Galaxy Explanation: Use the modified form of Kepler’s law to find the mass: total mas ...
... c) The Sun’s age and age of the globular cluster stars d) The motion of spiral arms and the mass of the central black hole e) The orbital period and distance from the Galactic center of objects near the edge of the Galaxy Explanation: Use the modified form of Kepler’s law to find the mass: total mas ...
black hole
... The core of helium ash cannot generate nuclear energy. Nevertheless, it can grow hotter—because it contracts and converts gravitational energy into thermal energy. The rising temperature heats the unprocessed hydrogen just outside the core—hydrogen that was never previously hot enough to fuse. ...
... The core of helium ash cannot generate nuclear energy. Nevertheless, it can grow hotter—because it contracts and converts gravitational energy into thermal energy. The rising temperature heats the unprocessed hydrogen just outside the core—hydrogen that was never previously hot enough to fuse. ...
Workshop Summary & Discussion
... • We confirmed that the next generation large single-dish telescopes with wide FoV and bandwidth will be extremely rich in discoveries, which is very complementary to ALMA. ...
... • We confirmed that the next generation large single-dish telescopes with wide FoV and bandwidth will be extremely rich in discoveries, which is very complementary to ALMA. ...
Omni XLT Manual - Celestron.UK.COM
... Sky Illumination ....................................................................................................................................... 33 ...
... Sky Illumination ....................................................................................................................................... 33 ...
an Educator`s GuidE
... line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the electromagnetic spectrum (referred to as a “wobble”). To find a world capable of supporting life, scientists target rocky, terrestrial worlds, but they are not always hospitable. Take t ...
... line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the electromagnetic spectrum (referred to as a “wobble”). To find a world capable of supporting life, scientists target rocky, terrestrial worlds, but they are not always hospitable. Take t ...
Introduction
... information on the contribution of low and intermediate mass stars to the interstellar medium can be obtained. With the aid of evolutionary models the nucleosynthetic history of the star can be reconstructed to learn the detailed history and characteristics of the progenitor star from which it evolv ...
... information on the contribution of low and intermediate mass stars to the interstellar medium can be obtained. With the aid of evolutionary models the nucleosynthetic history of the star can be reconstructed to learn the detailed history and characteristics of the progenitor star from which it evolv ...
printer-friendly version of benchmark
... Brightness of Stars The brightness of stars, including our Sun, is measured in terms of magnitude and luminosity. This measurement is somewhat complicated by the fact that nearby dimmer stars might appear brighter than really bright distant stars. The further a star is below a magnitude of zero, th ...
... Brightness of Stars The brightness of stars, including our Sun, is measured in terms of magnitude and luminosity. This measurement is somewhat complicated by the fact that nearby dimmer stars might appear brighter than really bright distant stars. The further a star is below a magnitude of zero, th ...
Grades 9-12 - pdf - McDonald Observatory
... the longest wavelengths as the color red. Compared to a spectrum taken in an Earth-bound laboratory, any atomic absorption or emission features in the galaxy’s spectrum will appear at longer wavelengths. The features look as if they shifted to the red end of the spectrum. Astronomers say that these ...
... the longest wavelengths as the color red. Compared to a spectrum taken in an Earth-bound laboratory, any atomic absorption or emission features in the galaxy’s spectrum will appear at longer wavelengths. The features look as if they shifted to the red end of the spectrum. Astronomers say that these ...
Impact on stellar properties of changing physics SAC Summer
... in metal-poor ([Fe/H] ≈ −2.90, Çalışkan et al. (2014)) stars, while metal-rich ([Fe/H] ≈ 0.12, Carraro et al. (2014)) helium-fusing stars instead lie on the red clump. Once the central helium is exhausted, the star collapses again, which causes heliumburning in an outer shell. At the same time, hy ...
... in metal-poor ([Fe/H] ≈ −2.90, Çalışkan et al. (2014)) stars, while metal-rich ([Fe/H] ≈ 0.12, Carraro et al. (2014)) helium-fusing stars instead lie on the red clump. Once the central helium is exhausted, the star collapses again, which causes heliumburning in an outer shell. At the same time, hy ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.