section 17 powerpoint
... in the sky created by our orbit about the Sun = similar to effects of stereoscopic vision in humans. Parsec. A measure of distance for an object that has a parallax of 1 arcsecond = 3.26 light years. Magnitude, m. A scale developed by Hipparchus to rank the naked-eye stars in terms of brightness. Lu ...
... in the sky created by our orbit about the Sun = similar to effects of stereoscopic vision in humans. Parsec. A measure of distance for an object that has a parallax of 1 arcsecond = 3.26 light years. Magnitude, m. A scale developed by Hipparchus to rank the naked-eye stars in terms of brightness. Lu ...
The Optical Gravitational Lensing Experiment. Photometry of the
... and dotted lines correspond to the theoretical light curves of binary event proposed by PLANET collaboration which were kindly provided by Drs P. Sackett and M. Dominik. As the PLANET group observations were made in the I-band and were calibrated based on the OGLE maps of the SMC, the comparison of ...
... and dotted lines correspond to the theoretical light curves of binary event proposed by PLANET collaboration which were kindly provided by Drs P. Sackett and M. Dominik. As the PLANET group observations were made in the I-band and were calibrated based on the OGLE maps of the SMC, the comparison of ...
A Collection of Curricula for the STARLAB Deep Sky Objects
... All the stars, clusters and nebulae seen in the night sky with the unaided eye are part of the Milky Way Galaxy. (Slides #58 and 59 show photographs of the Milky Way.) The Milky Way is one of many millions (perhaps billions) of galaxies that are part of our universe. Though there are several types o ...
... All the stars, clusters and nebulae seen in the night sky with the unaided eye are part of the Milky Way Galaxy. (Slides #58 and 59 show photographs of the Milky Way.) The Milky Way is one of many millions (perhaps billions) of galaxies that are part of our universe. Though there are several types o ...
E N 1”=140 AU
... We obtained a high spatial resolution (FWHM ~ 0.1”) near-infrared image of XZ Tau, a 0.3” separated binary system, using Subaru/CIAO. A jetlike structure (Jet1 of Fig 5) was detected at northeast side of the binary. It is possibly driven from the secondary. Previous HST observations of the binary sh ...
... We obtained a high spatial resolution (FWHM ~ 0.1”) near-infrared image of XZ Tau, a 0.3” separated binary system, using Subaru/CIAO. A jetlike structure (Jet1 of Fig 5) was detected at northeast side of the binary. It is possibly driven from the secondary. Previous HST observations of the binary sh ...
12 Comets, Kuiper Belt Objects, and Pluto
... in the right place at the right time. The Solar Maximum satellite was used to image P/Halley during the six weeks when it was too close to the Sun to be seen from Earth. The Dynamics Explorer 1 satellite was used to obtain UV images after perihelion. The International Ultraviolet Explorer (IUE) in E ...
... in the right place at the right time. The Solar Maximum satellite was used to image P/Halley during the six weeks when it was too close to the Sun to be seen from Earth. The Dynamics Explorer 1 satellite was used to obtain UV images after perihelion. The International Ultraviolet Explorer (IUE) in E ...
PeliTalk - BiOptic Driving Network
... listening to sounds of neural activity in the cortex, monitored with intracellular electrodes, while changing lenses ...
... listening to sounds of neural activity in the cortex, monitored with intracellular electrodes, while changing lenses ...
6671-09_stacie_hvisc - LOFT, Large Optics Fabrication and
... Why we want to do this (background)? What is a structure function? Describe a tool for people to use to convert commonly known information (Zernikes) into knowledge useful for telescopes (structure functions) ...
... Why we want to do this (background)? What is a structure function? Describe a tool for people to use to convert commonly known information (Zernikes) into knowledge useful for telescopes (structure functions) ...
Milky Way I
... • The stars in the galaxy revolve around the galactic center due to gravity • The galactic disk rotates differentially – stars near the center move faster than those farther away • This produces a spiral structure but should quickly wind up after a few rotations and disappear • What then preserves t ...
... • The stars in the galaxy revolve around the galactic center due to gravity • The galactic disk rotates differentially – stars near the center move faster than those farther away • This produces a spiral structure but should quickly wind up after a few rotations and disappear • What then preserves t ...
chapter 14 - Astronomy
... (b) Type II: their spectrum contains prominent hydrogen lines; they originate from the explosion of a single star. 5. Type I supernovae are divided into three subclasses: (a) Type Ib, and Ic are caused by massive stars that have lost different proportions of their outer layers before exploding. (b) ...
... (b) Type II: their spectrum contains prominent hydrogen lines; they originate from the explosion of a single star. 5. Type I supernovae are divided into three subclasses: (a) Type Ib, and Ic are caused by massive stars that have lost different proportions of their outer layers before exploding. (b) ...
Lecture 9a: More on Star formation and evolution 10/22
... NOT on main sequence Where on HR diagram is complicated (you don’t need to know) Simplistically Red Giants=He burning PHYS 162 ...
... NOT on main sequence Where on HR diagram is complicated (you don’t need to know) Simplistically Red Giants=He burning PHYS 162 ...
Planets Around M-dwarfs – Astrometric Detection and Orbit
... very large investment in RV planet detection. A high-precision ground-based astrometric capability would complement the GAIA and SIM-Lite space-based astrometric missions by operating at high-precision on optically faint Mdwarfs which are otherwise very hard to target. For example, for a typical M5 ...
... very large investment in RV planet detection. A high-precision ground-based astrometric capability would complement the GAIA and SIM-Lite space-based astrometric missions by operating at high-precision on optically faint Mdwarfs which are otherwise very hard to target. For example, for a typical M5 ...
What is a white dwarf?
... White dwarfs are the leftover cores of dead stars, usually made mostly of carbon (some are made mostly of helium; others of oxygen or other elements heavier than carbon, up to and including iron). Their name comes from the fact they are 'born' glowing white-hot with high temperatures (remember that ...
... White dwarfs are the leftover cores of dead stars, usually made mostly of carbon (some are made mostly of helium; others of oxygen or other elements heavier than carbon, up to and including iron). Their name comes from the fact they are 'born' glowing white-hot with high temperatures (remember that ...
DSLR Photometry
... required, if you are using high quality lenses, provided the target star and comparison are in or near the center of the field of view. ...
... required, if you are using high quality lenses, provided the target star and comparison are in or near the center of the field of view. ...
Ay 105 Lab Experiment #2: Geometric optics
... lens carried into position below the eyepiece a positive or negative lens? What will be the effect of this lens on the effective focal length of the telescope? Return the knobs to their original positions, and replace the parts you have removed. Move the knob that controls the motion of the lens ins ...
... lens carried into position below the eyepiece a positive or negative lens? What will be the effect of this lens on the effective focal length of the telescope? Return the knobs to their original positions, and replace the parts you have removed. Move the knob that controls the motion of the lens ins ...
Downloadable Full Text
... the observed defocused star (which is donut shaped in the case of a telescope with a central obscuration, hence the name). An iterative fitting algorithm creates a model of the aberrated image and compares it with the observed image, which is successively refined until the model passes a χ 2 goodnes ...
... the observed defocused star (which is donut shaped in the case of a telescope with a central obscuration, hence the name). An iterative fitting algorithm creates a model of the aberrated image and compares it with the observed image, which is successively refined until the model passes a χ 2 goodnes ...
Luminosity
... 2. These stars are old and were formed before there were many elements in the galaxy 3. Many atoms in these stars are ionized–have lost electrons–so can’t absorb 4. Much of their absorption is in the ultraviolet 5. 3 and 4 ...
... 2. These stars are old and were formed before there were many elements in the galaxy 3. Many atoms in these stars are ionized–have lost electrons–so can’t absorb 4. Much of their absorption is in the ultraviolet 5. 3 and 4 ...
Evidence for a signature of the galactic bar in the solar neighbourhood
... ment of the models with the COBE/DIRBE data), u of the order of 20 km s−1 are obtained, in agreement with the observations reported in Fig. 1. Fig. 6 is a slice cutting of Fig. 5 for φ = 30◦ . The values of u have been averaged within bins of 200 Myr time width. One obtains a significantly positive ...
... ment of the models with the COBE/DIRBE data), u of the order of 20 km s−1 are obtained, in agreement with the observations reported in Fig. 1. Fig. 6 is a slice cutting of Fig. 5 for φ = 30◦ . The values of u have been averaged within bins of 200 Myr time width. One obtains a significantly positive ...
SPIE - Twinkle Space Mission
... Infrared Spectrometer. This paper describes the opto-mechanical design of the NIR spectrometer and how the challenging requirements on stability, both radiometric and spectroscopic, are addressed. The detailed science requirements for this instrument are given in Paper 1, and flow down to the NIR sp ...
... Infrared Spectrometer. This paper describes the opto-mechanical design of the NIR spectrometer and how the challenging requirements on stability, both radiometric and spectroscopic, are addressed. The detailed science requirements for this instrument are given in Paper 1, and flow down to the NIR sp ...
Slide 1
... Mercury is not only low but faint: a tiny crescent only magnitude 2.1. If you succeed, this may be the thinnest you ever see Mercury as a crescent: about 10% sunlit. ...
... Mercury is not only low but faint: a tiny crescent only magnitude 2.1. If you succeed, this may be the thinnest you ever see Mercury as a crescent: about 10% sunlit. ...
What is the minimum size of a star that will go supernova? A. Half
... A. Very polite motion from a star B. Angular change in position by a star as seen from Earth C. The correct motion of a star Answer: B. The angular change in position by a star as seen from Earth. Stars appear to have fixed positions on the sky. That’s one reason why the constellations are ...
... A. Very polite motion from a star B. Angular change in position by a star as seen from Earth C. The correct motion of a star Answer: B. The angular change in position by a star as seen from Earth. Stars appear to have fixed positions on the sky. That’s one reason why the constellations are ...
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.