SPICA Science for Transiting Planetary Systems
... – Secondary Eclipse Spectroscopy (R=20) • Thermal emission of Super Earth: 8.8 μJy, (2.8×10-5), S/N = 1.1/hr ...
... – Secondary Eclipse Spectroscopy (R=20) • Thermal emission of Super Earth: 8.8 μJy, (2.8×10-5), S/N = 1.1/hr ...
View PDF - Adelphi University
... as measured by the value of ␥, decreases in this case with decreasing dot size. However, as the linear and saturable absorption coefficients are also decreasing, the relative effect of the three-photon absorption actually increases with decreasing dot size. For the correctly chosen combination of do ...
... as measured by the value of ␥, decreases in this case with decreasing dot size. However, as the linear and saturable absorption coefficients are also decreasing, the relative effect of the three-photon absorption actually increases with decreasing dot size. For the correctly chosen combination of do ...
Hot Gas In and Around Elliptical Galaxies William G. Mathews
... and in individual E galaxies are similar in many ways. But there are some important distinctions. Because smaller structures are often older in our hierarchical universe, the hot gas in elliptical galaxies and their associated galaxy groups may on average be less disturbed by ongoing mergers than th ...
... and in individual E galaxies are similar in many ways. But there are some important distinctions. Because smaller structures are often older in our hierarchical universe, the hot gas in elliptical galaxies and their associated galaxy groups may on average be less disturbed by ongoing mergers than th ...
NIR interferometry of the Seyfert galaxy NGC 1068
... located within the ionization cone to reach the required K band flux. Torus models which can explain the observed infrared SED by emission solely from the torus (i.e., without dust within the ionization cone) were presented by Granato & Danese (1994). A simulated 2.2 μm image reported by Granato et ...
... located within the ionization cone to reach the required K band flux. Torus models which can explain the observed infrared SED by emission solely from the torus (i.e., without dust within the ionization cone) were presented by Granato & Danese (1994). A simulated 2.2 μm image reported by Granato et ...
Analysis of cool DO-type white dwarfs from the Sloan Digital Sky
... based on LTE models and, thus do not provide reliable atmospheric parameters for DO WDs. Kleinman et al. (2013) listed 52 additional DO WDs, 28 of them previously analyzed with non-LTE model atmospheres. The remaining 24 had spectra with a too low signal-to noise ratio (S/N) or were either a misclas ...
... based on LTE models and, thus do not provide reliable atmospheric parameters for DO WDs. Kleinman et al. (2013) listed 52 additional DO WDs, 28 of them previously analyzed with non-LTE model atmospheres. The remaining 24 had spectra with a too low signal-to noise ratio (S/N) or were either a misclas ...
evolución química de la nube grande de magallanes.
... −2.00 ± 0.04( σobs = 0.11 ± 0.03) for the old star cluster Hodge 11(H11), in agreement with previous studies. And for the first time for SL869, a metallicity of [FeI/H]= −0.47 (σint = 0.04). In addition, an age of 1.45 Gyr (σ = 0.2Gyr) was estimated for SL869 using isochrone fitting. One of the most ...
... −2.00 ± 0.04( σobs = 0.11 ± 0.03) for the old star cluster Hodge 11(H11), in agreement with previous studies. And for the first time for SL869, a metallicity of [FeI/H]= −0.47 (σint = 0.04). In addition, an age of 1.45 Gyr (σ = 0.2Gyr) was estimated for SL869 using isochrone fitting. One of the most ...
Super-resolution Microscopy
... spaced point sources are imaged at different times. That is, imagine two PSFs that cannot be otherwise distinguished but each is observed at a different time (Fig. 3D). This methodology of “sequential” imaging at different times forms the basis of the most recent and successful superresolution micro ...
... spaced point sources are imaged at different times. That is, imagine two PSFs that cannot be otherwise distinguished but each is observed at a different time (Fig. 3D). This methodology of “sequential” imaging at different times forms the basis of the most recent and successful superresolution micro ...
January 2014 Astronomy Calendar by Dave Mitsky Some
... The Moon is 29.0 days old and is located in Aquarius on January 1st at 0:00 UT. Two New Moons occur this month. Large tides will occur on January 1st through January 4th and on January 30th and January 31st. The Moon is at its greatest declination north of +19.5 degrees on January 13th and its grea ...
... The Moon is 29.0 days old and is located in Aquarius on January 1st at 0:00 UT. Two New Moons occur this month. Large tides will occur on January 1st through January 4th and on January 30th and January 31st. The Moon is at its greatest declination north of +19.5 degrees on January 13th and its grea ...
The Eight Parts of Speech:
... egocentrism; it is the ability to do things that are selfless, out of a genuine concern for others or for the common good. In James Joyce’s A Portrait of the Artist as a Young Man, we read that “you have yet to learn the dignity of altruism and the responsibility of the human individual.” ...
... egocentrism; it is the ability to do things that are selfless, out of a genuine concern for others or for the common good. In James Joyce’s A Portrait of the Artist as a Young Man, we read that “you have yet to learn the dignity of altruism and the responsibility of the human individual.” ...
Characterizing the Cool KOIs III. KOI
... accurate Hipparcos parallax, which, when combined with photometry and the empirically-derived mass-luminosity relations of Delfosse et al. (2000), provides an accurate measurement of its mass. RA11 report metallicities for Barnard’s Star of [M/H] = -0.27 ± 0.12 and [Fe/H] = -0.39 ± 0.17, and an effe ...
... accurate Hipparcos parallax, which, when combined with photometry and the empirically-derived mass-luminosity relations of Delfosse et al. (2000), provides an accurate measurement of its mass. RA11 report metallicities for Barnard’s Star of [M/H] = -0.27 ± 0.12 and [Fe/H] = -0.39 ± 0.17, and an effe ...
Слайд 1 - Eventry
... method is widely used in tissue optics for processing the experimental data of spectrophotometry with integrating spheres. This method allows one to determine the absorption and the reduced scattering coefficients of a turbid media from the measured values of the total transmittance and the diffuse ...
... method is widely used in tissue optics for processing the experimental data of spectrophotometry with integrating spheres. This method allows one to determine the absorption and the reduced scattering coefficients of a turbid media from the measured values of the total transmittance and the diffuse ...
The thin disk
... (eg Samland et al 2003) suggest that the halo may have formed mainly through a lumpy collapse, with only ~ 10% of its stars coming from accreted satellites ...
... (eg Samland et al 2003) suggest that the halo may have formed mainly through a lumpy collapse, with only ~ 10% of its stars coming from accreted satellites ...
PDF only - at www.arxiv.org.
... distribution and photon energy density fall off rapidly at the short wavelength end, the 480 A shift from phototopic to scotopic vision makes a significant difference in the results. To answer the ...
... distribution and photon energy density fall off rapidly at the short wavelength end, the 480 A shift from phototopic to scotopic vision makes a significant difference in the results. To answer the ...
Realization of optical carpets in the Talbot and
... Interferometric self-imaging is also possible for spatially incoherent light if we add a second grating down stream from the first one. It now suffices that the wave is fairly monochromatic but not necessarily collimated or transversally coherent. Lau identified the arrangements which generate disti ...
... Interferometric self-imaging is also possible for spatially incoherent light if we add a second grating down stream from the first one. It now suffices that the wave is fairly monochromatic but not necessarily collimated or transversally coherent. Lau identified the arrangements which generate disti ...
Disk and wind interaction in the young stellar object MWC 297
... from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. We also reproduce the shape of the visibilities in the Brγ line as well as the profile of this line ...
... from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. We also reproduce the shape of the visibilities in the Brγ line as well as the profile of this line ...
T Tauri stars Optical lucky imaging polarimetry of HL and XZ Tau
... which is also present at near-IR wavelengths (Murakawa et al., 2008), and higher resolution optical images (Stapelfeldt et al., 1995). The position angle of the outflow is 47.5±7.5◦ , which coincides with previous measurements and the core polarization is observed to decrease with wavelength and a f ...
... which is also present at near-IR wavelengths (Murakawa et al., 2008), and higher resolution optical images (Stapelfeldt et al., 1995). The position angle of the outflow is 47.5±7.5◦ , which coincides with previous measurements and the core polarization is observed to decrease with wavelength and a f ...
Polarization - OpenStax CNX
... see the sky get bright and dim. This is a clear indication that light scattered by air is partially polarized. Figure 11 helps illustrate how this happens. Since light is a transverse EM wave, it vibrates the electrons of air molecules perpendicular to the direction it is traveling. The electrons th ...
... see the sky get bright and dim. This is a clear indication that light scattered by air is partially polarized. Figure 11 helps illustrate how this happens. Since light is a transverse EM wave, it vibrates the electrons of air molecules perpendicular to the direction it is traveling. The electrons 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.