Seismic Observations of the Solar Interior
... number of the largest-scale modes will soon be possible. Therefore one can anticipate imminent progress in asteroseismology, though the resolution of the structures of other stars will necessarily be less precise. An important property of solar-type oscillations is that their amplitudes are small; l ...
... number of the largest-scale modes will soon be possible. Therefore one can anticipate imminent progress in asteroseismology, though the resolution of the structures of other stars will necessarily be less precise. An important property of solar-type oscillations is that their amplitudes are small; l ...
- CUNY Academic Works
... introduction of the computer chip, which allowed astronomers to collect even larger, in fact vast quantities of data. Technology has allowed humans to stop hypothesizing about the cosmos based on simple observations, and has enabled us to finally begin to understand how the universe works. Scientist ...
... introduction of the computer chip, which allowed astronomers to collect even larger, in fact vast quantities of data. Technology has allowed humans to stop hypothesizing about the cosmos based on simple observations, and has enabled us to finally begin to understand how the universe works. Scientist ...
Lightning climatology of exoplanets and brown dwarfs guided by
... Clouds form on extrasolar planets and brown dwarfs where lightning could occur. Lightning is a tracer of atmospheric convection, cloud formation and ionization processes as known from the Solar system, and may be significant for the formation of prebiotic molecules. We study lightning climatology fo ...
... Clouds form on extrasolar planets and brown dwarfs where lightning could occur. Lightning is a tracer of atmospheric convection, cloud formation and ionization processes as known from the Solar system, and may be significant for the formation of prebiotic molecules. We study lightning climatology fo ...
25 Years of the Hubble Space Telescope - Speaker
... Auroras are curtains of light resulting from high-energy electrons racing along the planet's magnetic field into the upper atmosphere. The electrons excite atmospheric gases, causing them to glow. The electric-blue image of Jupiter’s northern aurora shows the main oval of the aurora, which is center ...
... Auroras are curtains of light resulting from high-energy electrons racing along the planet's magnetic field into the upper atmosphere. The electrons excite atmospheric gases, causing them to glow. The electric-blue image of Jupiter’s northern aurora shows the main oval of the aurora, which is center ...
Starburst Galaxies - Beck-Shop
... them. It is likely that they also produce many of the lower mass stars, but these are too faint to detect and so that cannot be confirmed observationally. During the early stages of the universe the contribution of starbursts to the overall production of stars may have been even higher. The extreme ...
... them. It is likely that they also produce many of the lower mass stars, but these are too faint to detect and so that cannot be confirmed observationally. During the early stages of the universe the contribution of starbursts to the overall production of stars may have been even higher. The extreme ...
Spot sizes on Sun-like stars
... surface features, e.g. banded structures or low-level and small-scale distributed surface features. The current resolution limit of Doppler imaging is 3◦ to 5◦ in longitude, depending mainly on the star’s rotational velocity, the spectrograph resolution and the signal-tonoise ratio that can be achie ...
... surface features, e.g. banded structures or low-level and small-scale distributed surface features. The current resolution limit of Doppler imaging is 3◦ to 5◦ in longitude, depending mainly on the star’s rotational velocity, the spectrograph resolution and the signal-tonoise ratio that can be achie ...
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... This document describes the Palomar Observatory DBSP guider control software. The DBSP instrument is a dual channel spectrograph that simultaneously measures spectra in both the blue and red portions of t ...
... This document describes the Palomar Observatory DBSP guider control software. The DBSP instrument is a dual channel spectrograph that simultaneously measures spectra in both the blue and red portions of t ...
Evolution of the Milky Way with radial motions of stars and gas
... (e.g. Lacey & Fall 1985 ) radial flows were never shown conclusively to play an important role in the chemical evolution of the Milky Way, because of the impossibility to observe or to infer from theory the corresponding radial velocity profiles in the Galaxy. The action of the bar can mix radially ...
... (e.g. Lacey & Fall 1985 ) radial flows were never shown conclusively to play an important role in the chemical evolution of the Milky Way, because of the impossibility to observe or to infer from theory the corresponding radial velocity profiles in the Galaxy. The action of the bar can mix radially ...
The Birth Environment of the Solar System
... The range of possible birth environments is discussed in Section 3, along with an overview of cluster properties. The constraints on these clusters provided by dynamical considerations are discussed in Section 4. The radiation fields produced by various star forming environments are then considered ...
... The range of possible birth environments is discussed in Section 3, along with an overview of cluster properties. The constraints on these clusters provided by dynamical considerations are discussed in Section 4. The radiation fields produced by various star forming environments are then considered ...
special - Carl Zeiss
... magnetic field strengths and other physical parameters that cannot be reproduced in a terrestrial laboratory. These parameters are measured in modern astrophysics using earth-based telescopes as well as space observatories which unite to cover the entire electromagnetic spectrum from radio waves to ...
... magnetic field strengths and other physical parameters that cannot be reproduced in a terrestrial laboratory. These parameters are measured in modern astrophysics using earth-based telescopes as well as space observatories which unite to cover the entire electromagnetic spectrum from radio waves to ...
THE VELOCITY DISTRIBUTION OF THE NEAREST
... pickup ions inside the solar system (formed by interactions of interstellar neutrals with the solar wind) and interstellar absorption lines toward nearby stars have been used to constrain the first full radiative transfer model of nearby ISM (SF02). These results indicate that the interstellar proper ...
... pickup ions inside the solar system (formed by interactions of interstellar neutrals with the solar wind) and interstellar absorption lines toward nearby stars have been used to constrain the first full radiative transfer model of nearby ISM (SF02). These results indicate that the interstellar proper ...
The Stars - Springer
... a star is determined primarily by the temperature of the atmosphere and not the core temperature. The structure of the absorption lines themselves can also be examined, and this gives further information on pressure, rotation and even whether a companion star is present. ...
... a star is determined primarily by the temperature of the atmosphere and not the core temperature. The structure of the absorption lines themselves can also be examined, and this gives further information on pressure, rotation and even whether a companion star is present. ...
Protoplanetary Discs
... Different groups of star-disc systems were identified based on their infrared SED shapes. Class I - the youngest systems Stellar photosphere dominates visible λ Disc emission can have gaps ...
... Different groups of star-disc systems were identified based on their infrared SED shapes. Class I - the youngest systems Stellar photosphere dominates visible λ Disc emission can have gaps ...
The Celestial Origin of Atoms
... open to confirmation by physical measurement. For example, the measured level of the solar neutrino flux, even though it does not coincide in detail with the expected value, attests to the truth of the basic ideas of nuclear astrophysics as applied to our own Sun, and by extrapolation, to all stars. ( ...
... open to confirmation by physical measurement. For example, the measured level of the solar neutrino flux, even though it does not coincide in detail with the expected value, attests to the truth of the basic ideas of nuclear astrophysics as applied to our own Sun, and by extrapolation, to all stars. ( ...
Telescopes
... •Mirrors are usually parabolic, not flat, to help bring the light to a focus. •Mirrors have the advantage of being supported from behind. •Light does not pass through mirrors, so no chromatic aberrations. mirrors began to replace lenses in larger telescopes. •Use of second reflection can make tubes ...
... •Mirrors are usually parabolic, not flat, to help bring the light to a focus. •Mirrors have the advantage of being supported from behind. •Light does not pass through mirrors, so no chromatic aberrations. mirrors began to replace lenses in larger telescopes. •Use of second reflection can make tubes ...
Discovery of an Unusual Optical Transient with the Hubble Space
... No match was found with either program. Although the cause of the broad absorption features is unclear, we note that dλ/λ for most of the features is consistent with ∼0.042 (with the possible exception of the feature at 6330 Å). If the width of the absorption features is due to a velocity distribut ...
... No match was found with either program. Although the cause of the broad absorption features is unclear, we note that dλ/λ for most of the features is consistent with ∼0.042 (with the possible exception of the feature at 6330 Å). If the width of the absorption features is due to a velocity distribut ...
