01-Syllabus
... course S/N, then a grade of ‘S’ will mean “C- or better (60%). Note: Furthermore, to get a passing grade you must earn 50% of the lab points (120/240) and 50% of the Obs. project points (70/140) and take all 3 exams. Exam dates: Dates for the two mid-semester exams have not been finalized yet but th ...
... course S/N, then a grade of ‘S’ will mean “C- or better (60%). Note: Furthermore, to get a passing grade you must earn 50% of the lab points (120/240) and 50% of the Obs. project points (70/140) and take all 3 exams. Exam dates: Dates for the two mid-semester exams have not been finalized yet but th ...
CT_optics
... The first order maximum is formed in a direction where light from the top third (a) of the slit cancels light from the middle third (b). The intensity of the first-order maximum is thus due only to the bottom third of the light through the slit (c) and is therefore roughly 1/9 of the intensity I of ...
... The first order maximum is formed in a direction where light from the top third (a) of the slit cancels light from the middle third (b). The intensity of the first-order maximum is thus due only to the bottom third of the light through the slit (c) and is therefore roughly 1/9 of the intensity I of ...
Stellar Physics
... For electromagnetic radiation, flux is defined as the rate of flow of energy passing through unit area. (Or average power per unit area.) For visible light this is called brightness and is in effect the apparent brightness at the surface of the star. From the Stefan-Boltzmann law for a black-body: F ...
... For electromagnetic radiation, flux is defined as the rate of flow of energy passing through unit area. (Or average power per unit area.) For visible light this is called brightness and is in effect the apparent brightness at the surface of the star. From the Stefan-Boltzmann law for a black-body: F ...
PDF Format
... brightness distribution, which could be a result of an advanced age of cooling. Alternatively, the object could be a figure deviating from spherical shape to something more of an ellipsoid. More likely, however, Muller and Kempf suggested that the variable might be two bodies, nearly equal in size a ...
... brightness distribution, which could be a result of an advanced age of cooling. Alternatively, the object could be a figure deviating from spherical shape to something more of an ellipsoid. More likely, however, Muller and Kempf suggested that the variable might be two bodies, nearly equal in size a ...
Supporting material for Lecture 2
... usually in optical or near-infrared wavelengths. The larger the magnitude, the lower the flux. Vega has m = 0 Apparent magnitude (m), the apparent brightness of an object. Absolute magnitude (M), which measures the luminosity of an object (or reflected light for non-luminous objects like asteroids); ...
... usually in optical or near-infrared wavelengths. The larger the magnitude, the lower the flux. Vega has m = 0 Apparent magnitude (m), the apparent brightness of an object. Absolute magnitude (M), which measures the luminosity of an object (or reflected light for non-luminous objects like asteroids); ...
Low mass stars
... How do we obtain the mass of stars? – use binary star systems and Kepler’s 3rd Law (for visible binaries – for spectroscopic binaries the orbital inclination needs to be known). Eclipsing binaries are even better! The method is the same as used to calculate the properties of extrasolar planets. As w ...
... How do we obtain the mass of stars? – use binary star systems and Kepler’s 3rd Law (for visible binaries – for spectroscopic binaries the orbital inclination needs to be known). Eclipsing binaries are even better! The method is the same as used to calculate the properties of extrasolar planets. As w ...
4.6 Quantized Radiation Field - Create and Use Your home
... Our treatment of the vector potential has drawn on the monochromatic plane-wave solution to the wave-equation for A. The quantum treatment of light as a particle describes the energy of the light source as proportional to the frequency ω , and the photon of this frequency is associated with a cavit ...
... Our treatment of the vector potential has drawn on the monochromatic plane-wave solution to the wave-equation for A. The quantum treatment of light as a particle describes the energy of the light source as proportional to the frequency ω , and the photon of this frequency is associated with a cavit ...
a fresh catch of massive binaries in the cygnus ob2 association
... We measured the radial velocity for each spectrum obtained at WIRO using Gaussian fits to the He i λ5876 line. Systemic velocities are, therefore, based solely on this line, by adopting a rest wavelength of 5875.69 Å measured in model stellar spectra with static atmospheres (TLUSTY; Lanz & Hubeny 20 ...
... We measured the radial velocity for each spectrum obtained at WIRO using Gaussian fits to the He i λ5876 line. Systemic velocities are, therefore, based solely on this line, by adopting a rest wavelength of 5875.69 Å measured in model stellar spectra with static atmospheres (TLUSTY; Lanz & Hubeny 20 ...
slides - Department of Physics and Astronomy
... (e.g. the Sun moves 120 km/s in the Milky way) • But distances to them are so large, change in their angular positions too small for us to see. • A star moving 100 km/s travels 3.2 billion km in a year • If it is 100 light years (950 trillion km) away its position in the sky changes only by 0.7 arc- ...
... (e.g. the Sun moves 120 km/s in the Milky way) • But distances to them are so large, change in their angular positions too small for us to see. • A star moving 100 km/s travels 3.2 billion km in a year • If it is 100 light years (950 trillion km) away its position in the sky changes only by 0.7 arc- ...
A Novel Test of the Modified Newtonian Dynamics with Gas Rich
... system in which conventional dynamics is extraordinarily well tested. One idea is thus to modify gravity on some suitably large length scale such that the apparent need for dark matter would be manifest in galaxies but not in the solar system. Such size-dependent ideas fail and can generically be ex ...
... system in which conventional dynamics is extraordinarily well tested. One idea is thus to modify gravity on some suitably large length scale such that the apparent need for dark matter would be manifest in galaxies but not in the solar system. Such size-dependent ideas fail and can generically be ex ...
Hyperbolic Secant Squared Pulse Shape
... effects on a pulse, one in space and the other in time. Dispersion disperses a pulse in space (angle): “Angular dispersion” ...
... effects on a pulse, one in space and the other in time. Dispersion disperses a pulse in space (angle): “Angular dispersion” ...
Application Note 7: Observing Spin Systems using COSY
... Glycyl-L-Phenylalanine is produced in a third year synthesis laboratory experiment where students synthesise the dipeptide from the corresponding amino acids. Analysing the COSY NMR spectra of the amino acids shows that the dipeptide can be easily characterised. ...
... Glycyl-L-Phenylalanine is produced in a third year synthesis laboratory experiment where students synthesise the dipeptide from the corresponding amino acids. Analysing the COSY NMR spectra of the amino acids shows that the dipeptide can be easily characterised. ...
Do Blue Compact Galaxies Have Red Halos?
... Clusters of Low-Mass Stars Deep, high-resolution observations of nearby halos should unravel point-sources with luminosities of single red giants but very strange colours ...
... Clusters of Low-Mass Stars Deep, high-resolution observations of nearby halos should unravel point-sources with luminosities of single red giants but very strange colours ...
Slide 1
... more stars in a region only 30 light years across, which suggests that all the stars were born in a single episode of star formation. Based on optical properties such as brightness and color some of the normal stars in the cluster are known to have masses of about 40 suns. ...
... more stars in a region only 30 light years across, which suggests that all the stars were born in a single episode of star formation. Based on optical properties such as brightness and color some of the normal stars in the cluster are known to have masses of about 40 suns. ...
Glencoe Physics Chapter 16
... From our knowledge of waves, we know they vary in frequency and wavelength. We have also determined that light has wave and particle properties. Light is probably our most important means of learning about the physical nature of our universe. light - that portion of the electromagnetic spectrum th ...
... From our knowledge of waves, we know they vary in frequency and wavelength. We have also determined that light has wave and particle properties. Light is probably our most important means of learning about the physical nature of our universe. light - that portion of the electromagnetic spectrum th ...
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.