We present results of new Monte Carlo calculations made with the DIRTY code of radiative transfer of stellar and scattered radiation for a dusty giant late-type galaxy like the Milky Way, which illustrate the effect of the attenuation of stellar light by internal dust on the integrated photometry of the individual bulge and disk components. ... In addition, we find that the structure of the dusty ISM affects more sensitively the observed magnitudes than the observed colors of both bulge and disk. ...

... Minute Values of Geomagnetic Field Components . ... AA 1868 - Present (3 hourly and daily) (monthly) (yearly) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) KP_AP 1932 - Present (3 hourly and daily) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) AE_HV 1957-75, 78-88 (hourly) AE_MIN 1978-881-6;198903;1990-94 (minute) DST 1957 - Present (hourly) PC 1975 - Present (15-minute) AMANAS 1959 - Present (3 hourly and daily) KMKNKS 1983 - Present (3 hourly) . ...

Next: Cross References between CCF Up: Applications of CCF Previous: Applications of CCF Contents . Table 2: Cross reference of mirror CCF components to In-Flight Calibration Plan. Target Name . ... PSF . ... FilTransX, QuantumEf, XAreaEf . ... Table 3: Cross reference of EPIC CCF components to In-Flight Calibration Plan. ... Table 4: Cross reference of EPIC Inflight Calibration Targets to CCF components . ... Table 7: Cross reference of In-Flight Calibration Targets to OM CCF components . ...

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... We present a computer program for modelling energy flux distribution and light curves of eclipsing binaries from far ultraviolet to infrared regions. The Roche model is assumed. Proximity effects of components (reflection of radiation and surface gravity darkening) are taken into account. ... Figure 1: The surface temperature distribution for Algol A-B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation effect. ...

... POLAM-L . ... HOME . ... ABOUT LOMO . PRODUCTS . MICROSCOPES . ... SURGICAL MICROSCOPES . ... Home Products Microscopes POLAM-L CN-UPOL Universal Condenser . CN-UPOL Universal Condenser – N.A. 0.85 / 0.30. ... The Polarizer PO-POL is mounted under the condenser. ... Included with POLAM-L research models, this condenser is designed to work with high-magnification objectives. ... LOMO America, Inc. ... 847) 215-8800, Fax: (847) 215-9073 . ... 2000-2016 LOMO America,Inc. ...

... The variability of the spectrum of the optical component of the IR-source IRAS01005+7910 was discovered for the first time in the BTA spectra [1]. ... The spectral features include absorptions that form in near-photospheric layers, narrow envelope emissions, and emission-absorption profiles that form in photosphere-to-envelope transition layers (the wind). ... Discovery of spectral variation in the optical counterpart of IRAS01005+7910. ... Dashed line - envelope curve of all the SiII 5979 profiles ...

... Iron abundance in the atmospheres of components of the binary system 41 Draconis . ... 5B Iron abundances, FeI and FeII lines equivalent widths, and microturbulence velocities were found for the components of a highly eccentric spectroscopic and interferometric binary system 41 Dra from high resolution spectra obtained close to the periastron. Weighted mean values of iron abundances in the atmospheres are lgN(Fe) = 7.66 ± 0.03 and lgN(Fe) = 7.72 ± 0.03 for the component a and b, correspondingly. ...

A FORTRAN code which computes synthetic light and colour curves of active, spotted stars has been developed. The main feature of this code is its ability to model simultaneously the V light curve and the (V-R)_{c}, (V-I)_{c} and (V-K) colour data. It also uses new effective temperature-colour and Barnes-Evans-like calibrations, temperature and gravity-dependent limb-darkening coefficients and different effective surface gravities for the spotted and unspotted photosphere. ...

... Hierarchy and stability 3. Stability criteria for triple systems 4. ... The results for selected systems with weak hierarchy (physical properties of components) System HD 40887 AB+CD HD 76644 AB+CD HD 217675 AB+CD HD 222326 A?+BC HD 284419 A+BC Spectral types K5V, M0V, K4V, ?? ... More accurate results for selected systems HD 217675/6 ( And) Quadruple system More accurate results for selected systems HD 217675/6 Pair B1B 2 More accurate results for selected systems HD 217675/6 (Zhuchkov et al. ...

OptInt PmWiki : MROI Fast Tip Tilt / Tech Meet 11 . ... This meeting is intended as an initial brainstorm on how we will perform the component and integrated tests in the PDR phase. ... How to measure movement of mount versus movement of optic in mount? ... Most tests should be conducted here in the lab but we could use COAST for some tests, particularly a system level test using a pin-hole at one end of the tables and the base-plate, optics and camera arrangement at the other end. ...

... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...

Optical/IR infrastructure priority setting process The Town Hall community meeting agreed that the "base" component of Gemini (i.e. the current 6.19% + Aspen program) is the community's highest priority, and that it should be wholly funded under NCRIS (i.e. without the LIEF or university contributions of the present arrangement). ... Infrastructure funded through NCRIS should serve the research and innovation system broadly, not just the host/funded institutions. ...

... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...

Next: About this document Up: Old neutron star distribution Previous: References . Figure: Velocity distribution of young pulsars calculated from statistical modelling of evolution of 50,000 binary systems. ... Figure: Equal density contours for the calculated distribution of old neutron stars (in arbitrary units). Figure: Plot of (solid lines), (long-dashed lines) and (short-dashed lines) for the calculated old neutron star space distribution versus limiting distance of the sample . ...

Authors: V.A. Marsakov , Yu.G. Shevelev , . Journal: 1988, Astron Zh. ... Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5498 F stars with homogeneous data on uvby photometry and proper motion, and placed within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotness from galactic plane are presented for 1787 stars. ...

... Inside IDL, STARTABLE is in the table format. ... STAR (string) Identifier of form CCCNNNNNN/CCCNNNN . ... RA (double) Right Ascension [h] . ... BAT (short int) Number in Batten's Catalogue . ... BSC (short int) Number in Bright Star Catalogue . ... ADS (short int) Number in Aitken Double Star Catalogue . ... WDS (long int) Number in Washington Double star catalog . MV (float) Johnson V magnitude (for combined system if multiple) . ... TYPE1 (float) Floating point spectral type of component 1 . ...

CIMA is more than just the observing tool - in fact, the observing tool is just a part of a bigger package called the CIMA software package. ... There is also a another package called the CIMA WAPP software which contains the WAPP software, the special Tcl/Tk interpreter used by CIMA and support libraries. ... All CIMA software components recognize the following general options that are part of the CIMA version selection system: . ... The select_cima script can be used to set up a default version. ...

RSAA Home . GSAOI Home . ... Other Links . ... Control Software Links . Optics Links . Micro-Optics Links . ... Optical Materials Databases . ... Rockwell Science Center home page . ... Santa Barbara Research Center home page . ... CCD-World home page . ... SDSU home page . ... EPICS home page . ... Optics Society of America . SPIE - Society for Optical Engineering . ... ZEMAX software (Focus Software page) . OPTICAD software (Focus Software page) . ... RedHat home page . ...

The Yarkovsky Effect in the Motion of NEAs . ... In this paper we evaluate the Yarkovsky effect on the motion of NEAs under the assumption that this acceleration depends on heliocentric distance as 1/r 2 and is characterized by the transverse component 2 in the orbital coordinate system. ... In some instances the Yarkovsky effect can be estimated by using only optical observations. Accounting for the Yarkovsky effect permits to include more optical observations in the orbit fitting process. ...