- University of Manitoba
... the UV emission spectrum, the dust was more visible (an absence of emission) as dark clouds surrounding the center of the galaxy. Wilson and Petipas were able to determine that the double peaked nature could also be due to the result of two individually separated clumps of molecular gas collecting o ...
... the UV emission spectrum, the dust was more visible (an absence of emission) as dark clouds surrounding the center of the galaxy. Wilson and Petipas were able to determine that the double peaked nature could also be due to the result of two individually separated clumps of molecular gas collecting o ...
Word doc - GDN - University of Gloucestershire
... One of the predictions of the Big Bang model for the origin of the Universe is that the initial explosion was extremely hot and that the remnants of the initial fireball might still be detected at the edges of the Universe. Support for this hypothesis came from the discovery in the 1960s by Arno Pen ...
... One of the predictions of the Big Bang model for the origin of the Universe is that the initial explosion was extremely hot and that the remnants of the initial fireball might still be detected at the edges of the Universe. Support for this hypothesis came from the discovery in the 1960s by Arno Pen ...
Ionization structure of an HII region
... 6. Check for stability of ξ (This is not necessary for the first radius, since τ = 0 for all frequencies. If ξ is not accurate enough, recalulate the mean intensities, and go back to Step 3 7. Check whether the outer edge has been reached, either by sufficiently low ξ or sufficiently large τ . If t ...
... 6. Check for stability of ξ (This is not necessary for the first radius, since τ = 0 for all frequencies. If ξ is not accurate enough, recalulate the mean intensities, and go back to Step 3 7. Check whether the outer edge has been reached, either by sufficiently low ξ or sufficiently large τ . If t ...
plasmas and fusion reactions
... c is the speed of light = 3 x 1010 [cm/sec]. The subjects of plasmas and fusion are fertile fields of research for engineers, physicists, and applied mathematicians. Recently, the research in plasma physics has been directed toward the possible technological applications, particularly, controlled t ...
... c is the speed of light = 3 x 1010 [cm/sec]. The subjects of plasmas and fusion are fertile fields of research for engineers, physicists, and applied mathematicians. Recently, the research in plasma physics has been directed toward the possible technological applications, particularly, controlled t ...
Can we account for the dust
... It has been suggested that it is difficult to form dust grains in stars in low metallicity (Z<0.1 Z) galaxies But … we found unexpected results ...
... It has been suggested that it is difficult to form dust grains in stars in low metallicity (Z<0.1 Z) galaxies But … we found unexpected results ...
Measuring with CCD Soft2008-2
... star was the largest. Since the field of view is approximately 20’ x 19’, and there are 1280x1024 pixels, each pixel corresponds to 1.” (You can calculate the exact field of view by noting that the chip size is 20.5 x 16.4 mm, the telescope aperture is 14”, and it is an f/10) We can do one sig fig b ...
... star was the largest. Since the field of view is approximately 20’ x 19’, and there are 1280x1024 pixels, each pixel corresponds to 1.” (You can calculate the exact field of view by noting that the chip size is 20.5 x 16.4 mm, the telescope aperture is 14”, and it is an f/10) We can do one sig fig b ...
Molecular Outflows Driven by Young Brown Dwarfs And VLMs. New
... Tau 6 and FU Tau A with high angular resolution observations with the Plateau de Bure Interferometer (PdBI). These sources were chosen because their associated CO emission showed clear evidence of an outflow and / or their spectral energy distributions (SEDs) showed strong evidence of a massive accr ...
... Tau 6 and FU Tau A with high angular resolution observations with the Plateau de Bure Interferometer (PdBI). These sources were chosen because their associated CO emission showed clear evidence of an outflow and / or their spectral energy distributions (SEDs) showed strong evidence of a massive accr ...
WASP-7: The brightest transiting-exoplanet system in the Southern
... and Mg i b lines. An estimate of the microturbulence (ξt ) comes from several clean and unblended Fe i and Fe ii lines, while the ionization balance between Fe i and Fe ii was used as an additional diagnostic of Teff and log g. In addition to the spectral analysis, we have also used TYCHO, DENIS and ...
... and Mg i b lines. An estimate of the microturbulence (ξt ) comes from several clean and unblended Fe i and Fe ii lines, while the ionization balance between Fe i and Fe ii was used as an additional diagnostic of Teff and log g. In addition to the spectral analysis, we have also used TYCHO, DENIS and ...
The birth of stars and planets - School of Physics
... The University of Sydney supernova explosion of 1054 AD ...
... The University of Sydney supernova explosion of 1054 AD ...
Planetary Companions to Evolved Intermediate
... et al. 2007; Takeda et al. 2008). Although these properties must reflect the history of the formation and evolution of planetary systems dependent on their host stars’ mass, they are still in need of confirmation by a larger number of samples. Combined with such observational progress, planet-format ...
... et al. 2007; Takeda et al. 2008). Although these properties must reflect the history of the formation and evolution of planetary systems dependent on their host stars’ mass, they are still in need of confirmation by a larger number of samples. Combined with such observational progress, planet-format ...
HOW HIGH ARE PULSAR MOUNTAINS?
... magnetic and rotation axes are not aligned then pulses are observed as the radiation beam sweeps across the Earth once per rotation. To generate gravitational waves a pulsar must have some nonsymmetric distortion that is not along its rotation axis, i.e. a "mountain". This distortion could have been ...
... magnetic and rotation axes are not aligned then pulses are observed as the radiation beam sweeps across the Earth once per rotation. To generate gravitational waves a pulsar must have some nonsymmetric distortion that is not along its rotation axis, i.e. a "mountain". This distortion could have been ...
Magnetic fields in O-, B-and A-type stars on the main sequence
... 78 Virginis [2]. These two stars are representative of two major groups of magnetic stars, which are directly related to the dominant mechanism of heat transport in the outer layers of the stars. For the Sun and low-mass stars on the main sequence, the magnetic fields have complex surface structures ...
... 78 Virginis [2]. These two stars are representative of two major groups of magnetic stars, which are directly related to the dominant mechanism of heat transport in the outer layers of the stars. For the Sun and low-mass stars on the main sequence, the magnetic fields have complex surface structures ...
Spectral Analysis Lab
... If you have ever looked closely at stars, you may have noticed that they are not all the same color. Scientists have found that they can learn a great deal about a star’s temperature and composition by analyzing the light it emits. How is this possible? When white light passes through a prism, it ap ...
... If you have ever looked closely at stars, you may have noticed that they are not all the same color. Scientists have found that they can learn a great deal about a star’s temperature and composition by analyzing the light it emits. How is this possible? When white light passes through a prism, it ap ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.