Notable long-period eclipsing binaries. Part I. - Project VS
... disk. The star deserves sustained observational attention for what it may reveal about the circumstellar environment of low-mass stars of planet-forming age. (Nordhagen et al., 2006). Late 2004, V718 Per entered a second eclipse, in ...
... disk. The star deserves sustained observational attention for what it may reveal about the circumstellar environment of low-mass stars of planet-forming age. (Nordhagen et al., 2006). Late 2004, V718 Per entered a second eclipse, in ...
arXiv:astro-ph/9701131v1 18 Jan 1997
... temperature. After ∼11 trillion years, when the star has become 90% 4 He by mass, a radiative core finally develops. The evolutionary time scale begins to accelerate, and hydrogen is exhausted relatively quickly in the center of the star. When nuclear burning within the modest resulting shell source ...
... temperature. After ∼11 trillion years, when the star has become 90% 4 He by mass, a radiative core finally develops. The evolutionary time scale begins to accelerate, and hydrogen is exhausted relatively quickly in the center of the star. When nuclear burning within the modest resulting shell source ...
Large-eddy simulations of isolated disc galaxies with thermal and
... molecular gas instead of the total gas density. Murante et al. (2010) use a simple multi-phase approach to determine the fraction of the gas density that is available for star formation. For the simulations presented in this article, we use a multi-phase model for the ISM, including an estimation of ...
... molecular gas instead of the total gas density. Murante et al. (2010) use a simple multi-phase approach to determine the fraction of the gas density that is available for star formation. For the simulations presented in this article, we use a multi-phase model for the ISM, including an estimation of ...
Physical basis of colors seen in Congo red-stained amyloid
... this arrangement is what is usually meant by ‘polarized light,’ but a more accurate expression is examination of a specimen between crossed polarizer and analyzer. There are two observations to explain, namely, how Congo red-stained amyloid appears bright against a dark background under these condit ...
... this arrangement is what is usually meant by ‘polarized light,’ but a more accurate expression is examination of a specimen between crossed polarizer and analyzer. There are two observations to explain, namely, how Congo red-stained amyloid appears bright against a dark background under these condit ...
Analysis of Tilted Grating Etalon for DWDM Demultiplexer Sommart Sang-Ngern, Non-member
... nm the optical peak starts to transmitted at the wavelength of about 1562 nm but for Λ = 257 nm, the first optical peak appears at the wavelength of about 1587 nm. As the grating period changes of 4 nm, the start transmission optical peak is up-shifted for about 25 nm. This implies that the optical ...
... nm the optical peak starts to transmitted at the wavelength of about 1562 nm but for Λ = 257 nm, the first optical peak appears at the wavelength of about 1587 nm. As the grating period changes of 4 nm, the start transmission optical peak is up-shifted for about 25 nm. This implies that the optical ...
Tidal interaction of a rotating 1 vec {M_sun} star with a - UvA-DARE
... action of a strong low frequency retrograde orbital harmonic which spins the star down, increasing the relative forcing frequency of the high orbital harmonic towards resonance. A similar driving effect can be caused by stellar evolution induced spin-down. The near-resonant weak prograde orbital har ...
... action of a strong low frequency retrograde orbital harmonic which spins the star down, increasing the relative forcing frequency of the high orbital harmonic towards resonance. A similar driving effect can be caused by stellar evolution induced spin-down. The near-resonant weak prograde orbital har ...
pptx
... ・Many GRB hosts are less massive and low metallicity, But… ・High metallicity environment of dark GRBs ...
... ・Many GRB hosts are less massive and low metallicity, But… ・High metallicity environment of dark GRBs ...
- Durham Research Online
... The precise mass scale at which halo physics may start influencing the star formation properties of satellite galaxies is, however, not well known. Numerical simulations show that galaxies are depleted of their cold and hot gas as they enter the virialized regions of relatively small groups (e.g., K ...
... The precise mass scale at which halo physics may start influencing the star formation properties of satellite galaxies is, however, not well known. Numerical simulations show that galaxies are depleted of their cold and hot gas as they enter the virialized regions of relatively small groups (e.g., K ...
LCM Analysis for PLATO 2.0
... Summary: parameters of the system, parameters of the star spot The key to the understanding what happens on the surface of the close binary is hidden in the evolution of its light curve. The typical timescale of surface activity in short-period binaries last from several up to a few hundreds of orbi ...
... Summary: parameters of the system, parameters of the star spot The key to the understanding what happens on the surface of the close binary is hidden in the evolution of its light curve. The typical timescale of surface activity in short-period binaries last from several up to a few hundreds of orbi ...
Astrometry of Asteroids
... vernal equinox, the position of the sun when it crosses the celestial equator on the first day of spring. Right ascension is measured in hours ( H ), minutes ( m ) and seconds ( s ). This may sound strange, but an hour of right ascension is defined as 1/24 of a circle, so an hour of right ascension ...
... vernal equinox, the position of the sun when it crosses the celestial equator on the first day of spring. Right ascension is measured in hours ( H ), minutes ( m ) and seconds ( s ). This may sound strange, but an hour of right ascension is defined as 1/24 of a circle, so an hour of right ascension ...
Exposing the hidden white dwarf binary origin by means of a
... among the young local population of stars for stellar masses above 1.1 M . By comparison, in our first study of the single-star population (Schröder & Pagel 2003, hereafter referred to as SP2003) we only subtracted the binary systems then known from the Hipparcos catalogue. Their fraction becomes ...
... among the young local population of stars for stellar masses above 1.1 M . By comparison, in our first study of the single-star population (Schröder & Pagel 2003, hereafter referred to as SP2003) we only subtracted the binary systems then known from the Hipparcos catalogue. Their fraction becomes ...
Astrometry of Asteroids
... vernal equinox, the position of the sun when it crosses the celestial equator on the first day of spring. Right ascension is measured in hours ( H ), minutes ( m ) and seconds ( s ). This may sound strange, but an hour of right ascension is defined as 1/24 of a circle, so an hour of right ascension ...
... vernal equinox, the position of the sun when it crosses the celestial equator on the first day of spring. Right ascension is measured in hours ( H ), minutes ( m ) and seconds ( s ). This may sound strange, but an hour of right ascension is defined as 1/24 of a circle, so an hour of right ascension ...
SPIRou Science Case
... photometric transit surveys like K2/NASA (new mission concept for Kepler, to be decided in 2014), TESS/NASA, CHEOPS/ESA, ExTrA 1 and PLATO/ESA (after being launched in 2024) to identify the true planets among the candidates they will discover. The second main goal is to explore the impact of magneti ...
... photometric transit surveys like K2/NASA (new mission concept for Kepler, to be decided in 2014), TESS/NASA, CHEOPS/ESA, ExTrA 1 and PLATO/ESA (after being launched in 2024) to identify the true planets among the candidates they will discover. The second main goal is to explore the impact of magneti ...
Measurement of the THz emission from a femtosecond laser filament
... plasma on the mirror M. Several filters (Teflon, polyethylene and diamond powder) were used to block totally the residual infrared light of the laserb). The total transmission of this permanent set of filters allowed detecting radiation between 0.1 and 2.7 THz (see inset in Figure 1 case A). In addi ...
... plasma on the mirror M. Several filters (Teflon, polyethylene and diamond powder) were used to block totally the residual infrared light of the laserb). The total transmission of this permanent set of filters allowed detecting radiation between 0.1 and 2.7 THz (see inset in Figure 1 case A). In addi ...
Design and investigation of properties of nanocrystalline diamond
... Nanocrystalline diamond (NCD) thin films are of special interest in photonics and micro/nanophotonics structures because of their unique properties as low absorption and scattering in wide spectral range, high thermal conductivity, high density, large Young’s modulus and high stability under extreme ...
... Nanocrystalline diamond (NCD) thin films are of special interest in photonics and micro/nanophotonics structures because of their unique properties as low absorption and scattering in wide spectral range, high thermal conductivity, high density, large Young’s modulus and high stability under extreme ...
http://arxiv.org/pdf/1401.1510v1.pdf
... The flux-limited sub-mm selection ensures a relatively homogenous sample of the most intensely starforming dust obscured galaxies at z & 3: Due to the negative kcorrection, the sub-mm flux detection limit corresponds roughly to a cut in SFR over the considered redshift range. Note that while a fract ...
... The flux-limited sub-mm selection ensures a relatively homogenous sample of the most intensely starforming dust obscured galaxies at z & 3: Due to the negative kcorrection, the sub-mm flux detection limit corresponds roughly to a cut in SFR over the considered redshift range. Note that while a fract ...
Optical properties of Al2O3 thin films grown by
... flat. This eliminates, or at least greatly reduces, light scattering at surface imperfections—the major source of optical losses in thin-film waveguides. ALD, compared to other thin-film fabrication techniques, has low growth rates, since film growth occurs through the sequential pulsing of two or m ...
... flat. This eliminates, or at least greatly reduces, light scattering at surface imperfections—the major source of optical losses in thin-film waveguides. ALD, compared to other thin-film fabrication techniques, has low growth rates, since film growth occurs through the sequential pulsing of two or m ...
EUV and X-ray Spectroscopy of the Active Sun
... path of propagating electrons towards the dense chromosphere (c). Heating of the chromosphere results in chromospheric evaporation (d) which fills the loops with hot, SXR emitting plasma (e). Direct heating of the looptop can result in large pressure gradients that drive conductive fronts (f ). . . ...
... path of propagating electrons towards the dense chromosphere (c). Heating of the chromosphere results in chromospheric evaporation (d) which fills the loops with hot, SXR emitting plasma (e). Direct heating of the looptop can result in large pressure gradients that drive conductive fronts (f ). . . ...
Sidereus Nuncius (Print Translation)
... I shall first mention briefly, and then I shall review the history of the observations made by me. About ten months ago a rumor came to our ears that a spyglass had been made by a certain Dutchman23 by means of which visible objects, although far removed from the eye of the observer, were distinctl ...
... I shall first mention briefly, and then I shall review the history of the observations made by me. About ten months ago a rumor came to our ears that a spyglass had been made by a certain Dutchman23 by means of which visible objects, although far removed from the eye of the observer, were distinctl ...
DISSERTATION
... turned out to be crucial region for parameter determinations. In the second part of this work newly obtained spectroscopic and interferometric data are presented for a sample of five objects with very limited dynamic effects. The observations are compared with models and the full set of stellar para ...
... turned out to be crucial region for parameter determinations. In the second part of this work newly obtained spectroscopic and interferometric data are presented for a sample of five objects with very limited dynamic effects. The observations are compared with models and the full set of stellar para ...
Astrometry of Asteroids
... vernal equinox, the position of the sun when it crosses the celestial equator on the first day of spring. Right ascension is measured in hours ( H ), minutes ( m ) and seconds ( s ). This may sound strange, but an hour of right ascension is defined as 1/24 of a circle, so an hour of right ascension ...
... vernal equinox, the position of the sun when it crosses the celestial equator on the first day of spring. Right ascension is measured in hours ( H ), minutes ( m ) and seconds ( s ). This may sound strange, but an hour of right ascension is defined as 1/24 of a circle, so an hour of right ascension ...
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.