Cosmic - ScienceA2Z.com
... – Possible Mars – Possible satellites around Jupiter or Saturn • However, are those too cold • Possible when sun swells??? ...
... – Possible Mars – Possible satellites around Jupiter or Saturn • However, are those too cold • Possible when sun swells??? ...
A Hero`s Little Horse: Discovery of a Dissolving Star Cluster in
... We report the discovery of an ultra-faint stellar system in the constellation of Pegasus. This concentration of stars was detected by applying our overdensity detection algorithm to the SDSS-DR10 and confirmed with deeper photometry from the Dark Energy Camera at the 4-m Blanco telescope. The best-f ...
... We report the discovery of an ultra-faint stellar system in the constellation of Pegasus. This concentration of stars was detected by applying our overdensity detection algorithm to the SDSS-DR10 and confirmed with deeper photometry from the Dark Energy Camera at the 4-m Blanco telescope. The best-f ...
SBAG Outline - Laboratory Studies
... Dust properties: What is available concerning densities, spectra, surface areas, porosity, and fluffiness of candidate dusts? To what extent are such properties altered by adsorption of gas molecules on surfaces? What temperature dependences have been studied? How about ions on dust grains (non-icy ...
... Dust properties: What is available concerning densities, spectra, surface areas, porosity, and fluffiness of candidate dusts? To what extent are such properties altered by adsorption of gas molecules on surfaces? What temperature dependences have been studied? How about ions on dust grains (non-icy ...
Magnitudes lesson plan
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
The Drake Equation The Drake equation, which we encountered in
... would be able to land over much more of the Earth. The energy of these particles is such that they can easily break molecular bonds, causing mutations or preventing formation of complex organic molecules. This is especially important for planets around low-mass stars, because low-mass stars have mu ...
... would be able to land over much more of the Earth. The energy of these particles is such that they can easily break molecular bonds, causing mutations or preventing formation of complex organic molecules. This is especially important for planets around low-mass stars, because low-mass stars have mu ...
Magnitude Scale and Distance Measurements
... and this give us a way to find the relative intensities of any two stars, based on their apparent magnitudes. Try a few examples: 1. The apparent magnitude of Spica is +0.98, and the apparent magnitude of Sirius A is -1.44. How many times brighter is Sirius A than Spica? 2. The apparent magnitude of ...
... and this give us a way to find the relative intensities of any two stars, based on their apparent magnitudes. Try a few examples: 1. The apparent magnitude of Spica is +0.98, and the apparent magnitude of Sirius A is -1.44. How many times brighter is Sirius A than Spica? 2. The apparent magnitude of ...
High Energy Gamma Rays from Protons Hitting
... factor; in order to calculate the total flux we cutoff the calculation when the π0 momentum fell below Q0/6. Obviously our mini-jet model will not be accurate when the momentum of the decay anti-quark is small. Nevertheless the rise in the spectrum as one approaches 70 MeV and sharp cutoff below 70 ...
... factor; in order to calculate the total flux we cutoff the calculation when the π0 momentum fell below Q0/6. Obviously our mini-jet model will not be accurate when the momentum of the decay anti-quark is small. Nevertheless the rise in the spectrum as one approaches 70 MeV and sharp cutoff below 70 ...
Using the Spectrophotometer
... 2. Use a P1000 to pipet 2000 µl of dH2O into each tube. 3. Add 2000 µl of 18.6 µM bromphenol blue to tube 1. This tube represents a 1/2 (or a 1:1) dilution. The concentration of bromphenol blue in this tube is 9.3 µM (18.6 µM * 1/2). 4. To mix the contents of tube 1, use a vortex mixer. 5. Set the v ...
... 2. Use a P1000 to pipet 2000 µl of dH2O into each tube. 3. Add 2000 µl of 18.6 µM bromphenol blue to tube 1. This tube represents a 1/2 (or a 1:1) dilution. The concentration of bromphenol blue in this tube is 9.3 µM (18.6 µM * 1/2). 4. To mix the contents of tube 1, use a vortex mixer. 5. Set the v ...
Particle Astrophysics Lecture 5 Gamma-ray Astronomy
... So sources might be at least transparent to protons... otherwise we will not see Cosmic Rays! A generic transparent source can be understood as follows: Protons are accelerated in a region of high magnetic fields where they interact with photons and generate neutral and charged pions. While the seco ...
... So sources might be at least transparent to protons... otherwise we will not see Cosmic Rays! A generic transparent source can be understood as follows: Protons are accelerated in a region of high magnetic fields where they interact with photons and generate neutral and charged pions. While the seco ...
TR555 - Princeton Instruments
... Raman Spectroscopy systems can be derived from several dispersive components depending on the level of performance required. For many applications the common notch filter spectrometer arrangement can be used successfully, but for higher performance or unmatched flexibility the triple spectrometer is ...
... Raman Spectroscopy systems can be derived from several dispersive components depending on the level of performance required. For many applications the common notch filter spectrometer arrangement can be used successfully, but for higher performance or unmatched flexibility the triple spectrometer is ...
Ch. 18
... space like a lighthouse beam swings through the night. If this beam crosses the Earth, we see it periodically appear and disappear – in pulses. ...
... space like a lighthouse beam swings through the night. If this beam crosses the Earth, we see it periodically appear and disappear – in pulses. ...
How to Directly Image a Habitable Planet Around Alpha Centauri
... size range are realistic for launch in the 2020 decade, such as NASA’s planned WFIRST-AFTA mission [1], as well as the Exo-C and Exo-S concept studies [2, 3]. Such telescopes can in principle access the habitable zones of 10s of Sunlike stars, depending on coronagraphic inner working angle. Indeed, ...
... size range are realistic for launch in the 2020 decade, such as NASA’s planned WFIRST-AFTA mission [1], as well as the Exo-C and Exo-S concept studies [2, 3]. Such telescopes can in principle access the habitable zones of 10s of Sunlike stars, depending on coronagraphic inner working angle. Indeed, ...
4A-Astronomer-Notes
... Developed theories for black holes saying that they emit radiation which can be detected by special instrumentation. First theorized that black holes can never decrease in size nor can they split in two to create two black holes. ...
... Developed theories for black holes saying that they emit radiation which can be detected by special instrumentation. First theorized that black holes can never decrease in size nor can they split in two to create two black holes. ...
The Kinematics of Star Formation: Theory and Observation in the
... while core accretion is thought to form stars in quasi-equilibrium, and is thus capable of acting in relatively low density environments or potentially even in isolation. Paul then went on to discuss how different simulations seek to explain how the IMF is built up. Maschberger et al. (2014) studied ...
... while core accretion is thought to form stars in quasi-equilibrium, and is thus capable of acting in relatively low density environments or potentially even in isolation. Paul then went on to discuss how different simulations seek to explain how the IMF is built up. Maschberger et al. (2014) studied ...
Winds of Main-Sequence Stars - Harvard
... Solar X-rays & magnetic flux • Empirically, does solar mass loss really scale with FX ~ Φ ? It depends on which field lines are considered! ...
... Solar X-rays & magnetic flux • Empirically, does solar mass loss really scale with FX ~ Φ ? It depends on which field lines are considered! ...
ASTR 1020 Homework Solutions Chapter 1
... 36. Mercury takes longer to go from greatest western elongation to greatest eastern elongation than vice versa because the orbital distance is greater, as can be seen in Figure 4-6. This can be verified with the dates, too, e.g., February 24 to April 8 is 43 days, while April 8 to June 20 is 73 days ...
... 36. Mercury takes longer to go from greatest western elongation to greatest eastern elongation than vice versa because the orbital distance is greater, as can be seen in Figure 4-6. This can be verified with the dates, too, e.g., February 24 to April 8 is 43 days, while April 8 to June 20 is 73 days ...
GMRT Low Frequency Observations of Extrasolar Planetary Systems
... moon-planet interaction produces a significant increase in decametric emission (Gurnett et al. 2002). At higher (GHz) frequencies, synchrotron emission generated from the acceleration of energetic electrons, trapped in Jupiter’s magnetic field dominates the emission process. This means for detection ...
... moon-planet interaction produces a significant increase in decametric emission (Gurnett et al. 2002). At higher (GHz) frequencies, synchrotron emission generated from the acceleration of energetic electrons, trapped in Jupiter’s magnetic field dominates the emission process. This means for detection ...
Slide 1
... Stellar Magnitude (brightness) Magnitude is the degree of brightness of a star. In 1856, British astronomer Norman Pogson proposed a quantitative scale of stellar magnitudes, which was adopted by the astronomical community. Each increment in magnitude corresponds to an increase in the amount of ene ...
... Stellar Magnitude (brightness) Magnitude is the degree of brightness of a star. In 1856, British astronomer Norman Pogson proposed a quantitative scale of stellar magnitudes, which was adopted by the astronomical community. Each increment in magnitude corresponds to an increase in the amount of ene ...
The significant contribution of minor mergers to the cosmic star
... Model likelihoods are calculated from the values of χ2 , and 1D probability distributions for free parameters like stellar mass are constructed via marginalisation. The median of the 1D distribution provides a best estimate for the parameter in question, with the 16th and 84th percentile values (whi ...
... Model likelihoods are calculated from the values of χ2 , and 1D probability distributions for free parameters like stellar mass are constructed via marginalisation. The median of the 1D distribution provides a best estimate for the parameter in question, with the 16th and 84th percentile values (whi ...
THE PROPERTIES OF MAIN-SEQUENCE STARS - Cosmos
... 8 this follows the plotted linear relationship, log N / 0:6m, that is characteristic of a spatially uniform population. At fainter magnitudes the histogram falls below the straight line for the reasons given by Murray et al. (1997), whose equation (2) gives the probability P (r) that a star that i ...
... 8 this follows the plotted linear relationship, log N / 0:6m, that is characteristic of a spatially uniform population. At fainter magnitudes the histogram falls below the straight line for the reasons given by Murray et al. (1997), whose equation (2) gives the probability P (r) that a star that i ...
CONSTELLATIONS
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
ESO telescopes
... Telescope, providing precise spatial information for baseline lengths ≤3.5 m. Using our extensive VLTI+speckle data set, we could reconstruct16 a modelindependent interferometric image from the measured visibility amplitudes and closure phases. This technique, which is routinely applied in radio int ...
... Telescope, providing precise spatial information for baseline lengths ≤3.5 m. Using our extensive VLTI+speckle data set, we could reconstruct16 a modelindependent interferometric image from the measured visibility amplitudes and closure phases. This technique, which is routinely applied in radio int ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.