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1. The observed distribution
Next: The derived luminosity and Up: The galactic population of Previous: The galactic population of . Figure 16: The observed distribution of pulsar dispersion measures. Dotted curve is the total known population, solid curve is the Parkes survey. Figure 17: The observed distribution of pulsar distances above the galactic plane. ... Figure 18: The observed distribution of pulsar flux densities. ...
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Ссылки http://www.atnf.csiro.au/research/pulsar/Tutorial/tut/node41.html -- 3.2 Кб -- 04.02.2013
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2. http://hea-www.harvard.edu/PINTofALE/papers/kgd_MM_head32_4217.ps.gz
GJ 205 Other Names HD 36395 / Wolf 1453 (RA, Dec) 2000 (05:31:24.85, 03:38:53.4) (l II b II ) (206.93, 19.45) Spectral Type dM1.5 Distance 5.7 pc m V 7 m :98 B \Gamma V 1.5 [m=H] 0.5 ROSAT/PSPC 0.19 cts s \Gamma1 EUVE /DS 0.02 cts s \Gamma1 EUVE Observation Jan/Feb 1997 [394.1 ks] GJ 411 Other Names HD 95735 / SAO 62377 (RA, Dec) 2000 (11:03:22.58, +36:02:09.6) (l II b II ... The line strengths were computed using a solartype Active Region DEM and a Quiet Sun DEM (Brosius et al. ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/papers/kgd_MM_head32_4217.ps.gz -- 256.6 Кб -- 03.11.2000
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3. Spectral-Line Observing
... We will consider the rms, (K), for observations with a receiver of system temperature, T , frequency resolution, per polarization, and total integration time per observing cycle, . ... For ``in-band'' frequency switching, the line under investigation is always in the observing band. ... Position Switching or ``Out-of-Band'' Frequency Switching: Here the line is only observed for one half of the time, with noise being present all of the time. ...
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Ссылки http://www.naic.edu/~astro/guide/node15.html -- 10.0 Кб -- 22.02.2012
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4. Emission molecular bands
Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...
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Ссылки http://mavr.sao.ru/hq/ssl/IRAS04296/node4.html -- 14.3 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/ssl/IRAS04296/node4.html -- 14.3 Кб -- 01.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/ssl/IRAS04296/node4.html -- 14.3 Кб -- 01.10.2012
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[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/ssl/IRAS04296/node4.html -- 14.3 Кб -- 01.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/ssl/IRAS04296/node4.html -- 14.3 Кб -- 01.10.2012
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5. Stars as Observed in the Infrared
The figure below shows what stellar spectra are like in this wavelength range. All stars hotter than about 3000 K effective temperature radiate like a hot blackbody at these long wavelengths, possibly with a very few atomic lines (of Hydrogen, in the A-type stars) or molecular bands (the CO band overtone near 2.25 microns for example, in K-type stars and G-type stars). ... unusual features: mixed chemistry sources, Wolf-Rayet stars, ice bands, featureless carbon-star spectra ...
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Ссылки http://www.stsci.edu/~volk/stars.html -- 4.1 Кб -- 14.06.2010
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6. Emission-line galaxies
... The new emission line galaxies are listed in Table 2 containing the following information: . column 1: The object's IAU-type name with the prefix HS. ... This was not corrected in the figure shown in Appendix A. HS1214+3801 : This is seemingly a supergiant H II -region at the very rim of the nearby edge-on disc galaxy (SA(s)cd) NGC 4244 (V hel = 224 kms -1 and B T =10.88). ... To check this option one needs a detailed map of the NGC 4244 velocity field including HS 1214+3801. ...
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Ссылки http://www.sao.ru/precise/Laboratory/Publications/2000/HSSIII/node10.html -- 12.9 Кб -- 08.02.2000
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7. Interactive Fitting of EUVE Emission Line Spectra
... An interactive IRAF task for the analysis of Extreme Ultraviolet Explorer ( EUVE ) emission line spectra is presented. The line flux in extracted spectra may be measured by multiple techniques, including fitting individual lines. ... To aid in identifying lines, the positions of known lines may be marked on the spectrum during the fitting process. Also, model EUVE spectra may be constructed and overlaid using plasma emissivities and source emission measures supplied by the user. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/abbottm.html -- 8.6 Кб -- 03.11.2000
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8. What is Redshift? (2dF QSO Redshift Survey - 2QZ)
... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...
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Ссылки http://www.2dfquasar.org/restframe.html -- 10.2 Кб -- 07.05.2008
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9. XMM Science Objectives
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Ссылки http://xmm.vilspa.esa.es/user/sciobj/science_top.html -- 1.5 Кб -- 12.11.1998
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10. Clumpy dust disks
... Abstract: We present Monte Carlo radiative transfer simulations for spiral galaxies modelled as a stellar disk and a two-phase clumpy dust distribution. ... As a general result, clumpy models are less opaque than the corresponding homogeneous models. ... 0.00 0.15 0.50 0.1 0.5 1.0 2.0 5.0 10.0 0.25 X . ... We have also produced several homogeneous models, to compare to the clumpy models. ... Homogeneous and clumpy models with the same tauV have the same dust mass. ...
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Ссылки http://www.arcetri.astro.it/~sbianchi/clumping.html -- 14.5 Кб -- 29.03.2002
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11. THE HUBBLE LAW JAVA APPLET
These are very prominent absorption lines is most all galaxies. ... These pair of absorption lines will appear in all the spectra and they should be your principle source for determining the redshift. ... When this applet opens you will see an iconic representation of galaxies in the left hand side of the applet and a target area in the right side of the applet. ... Note: What you are doing in this excercise is identical to what Hubble did in the 1920's and you are using the same galaxies. ...
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Ссылки http://zebu.uoregon.edu/2002/ph123/hub.html -- 5.5 Кб -- 09.07.2001
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12. http://star.arm.ac.uk/~ambn/abstract319.html
The UV spectral lines formed at transition region temperatures in the solar atmosphere, shows a prevailing redshifted emission. Using the Solar Ultraviolet Measurements of Emitted Radiation spectrometer flown on the Solar and Heliospheric Observatory spacecraft, we measure the amount of line shift as a function of the temperature for several spectral lines formed in the range between 10^{4} and 10^{6} K. We analyze spectrograms relative to the quiet Sun and to the active region NOAA 7946. ...
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Ссылки http://star.arm.ac.uk/~ambn/abstract319.html -- 2.1 Кб -- 08.09.1999
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13. http://www.mrao.cam.ac.uk/~bn204/mk2/publications/2005/IREvolvePasadenaConfPoster.pdf
Toward a Quantitative Interpretation of MidIR Spectra of Galaxies B. Nikolic (NRAO), P. Alexander (Cambridge), M. Clemens (Padova), D. Ford (Cambridge), G. Cotter (Oxford), M.S. Longair (Cambridge) The Method Starburst99 + Comprehensive dust model + Simple radiative transfer Allows investigation of the effects of starburst age, metallicity, IMF etc. ... Appropriate for midIR models since only UV/optical photons are important in exciting the emission. ...
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Ссылки http://www.mrao.cam.ac.uk/~bn204/mk2/publications/2005/IREvolvePasadenaConfPoster.pdf -- 1225.1 Кб -- 25.11.2009
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14. SphinX press release
... Polish scientists at the Space Research Centre, Polish Academy of Sciences, in Wroclaw, south-west Poland, have constructed an instrument called SphinX (short for Solar PHotometer In X-rays), which is an X-ray spectrophotometer, that will obtain spectra in the energy range 0.5--15 keV in 256 energy channels with frequency of up to 100 times a second. ... SphinX is part of a package of instruments known as TESIS (PI Prof. Sergei Kuzin, Lebedev Institute, Moscow). ... Space Research Centre, . ...
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Ссылки http://www.tesis.lebedev.ru/info/SphinX_pr.php -- 7.2 Кб -- 01.10.2012
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15. http://www.wdcb.ru/stp/data/solar.act/flux10.7/%20%20penticton.txt
PENTICTON SOLAR RADIO FLUX VALUES (from SGD Explanation of Data Reports) Daily Solar Flux Values - Penticton -- Daily measurements of the integrated emission from the solar disc at 2800MHz (10.7cm wavelength) have been made by the National Research Council of Canada since 1947. ... The data are tabulated in two forms: the "observed flux" (S), and the "adjusted flux" (Sa). ... The "observed flux" values are useful in ionospheric physics and other terrestrial consequences of solar activity. ...
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Ссылки http://www.wdcb.ru/stp/data/solar.act/flux10.7/%20%20penticton.txt -- 6.0 Кб -- 18.01.2010
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16. http://vega.inp.nsk.su/~inest/astrolib/Sun/kursoviki/Model2000/AtmModel/UV/README
... This file table3 82 660 Observed wavelengths, laboratory values and identifications -------------------------------------------------------------------------------- Byte-by-byte Description ... Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- SpOrd Spectrum order 5- 12 F8.3 0.1nm SolLam Wavelength determination of all solar and telluric lines measurable on the ... Note (6): J: Junkes et al., ...
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Ссылки http://vega.inp.nsk.su/~inest/astrolib/Sun/kursoviki/Model2000/AtmModel/UV/README -- 7.8 Кб -- 26.03.2000
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17. Observing list preparation
... The scheduling routines assist in creating an observing list (stored in the startable) from scratch or from another list stored on disk, and computing the visibility of the stars in a specific night and array configuration. The date of observation is taken from the variable date , and the array name from the variable systemid . If these are not defined, defaults are used for date (the next night) and for array (NPOI). ... addstar , stars _char Add one or more stars to the startable. ...
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Ссылки http://www.eso.org/~chummel/oyster/manual/node131.html -- 9.2 Кб -- 28.04.2015
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18. http://www.gao.spb.ru/english/publ-s/viii-rfs/p099.pdf
... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...
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Ссылки http://www.gao.spb.ru/english/publ-s/viii-rfs/p099.pdf -- 100.3 Кб -- 21.05.2007
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19. Transits of Venus
... 12c. Venus transit (1) . 12d. Venus transit (2) . 12e. Venus transit (3) . ... 1 The 2004 Venus transit . ... Kepler's third law allows one to evaluate the dimensions of the solar system in relative units, e.g. in " astronomical units " (AUs), where 1 AU is the mean Sun-Earth distance. ... Edmond Halley suggested using the transit of Venus across the Sun's disk, when it appears as a dark round spot --or to quote one observer of the 2004 transit, "like a blueberry in front of an orange." ...
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Ссылки http://www.iki.rssi.ru/mirrors/stern/stargaze/Svenus1.htm -- 13.4 Кб -- 05.06.2006
[ Сохраненная копия ] Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Svenus1.htm -- 13.4 Кб -- 22.12.2007
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20. Observing Out-Of-Town ? Amateur Astronomers Association of New York
... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... For those of us who need on occasion to seek out truly dark skies, a group of members of the Amateur Astronomical Association organizes regular trips to sites in the New York metropolitan area suitable for deep-sky observing. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by...
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Ссылки http://www.aaa.org/observing/observing-out-of-town/ -- 96.3 Кб -- 10.04.2016
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