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http://www.stsci.edu/~volk/features4.html.
http://www.stsci.edu/~volk/features4.html.
1. The SETI Institute is after alien signals. Assuming another world is beaming a
... Searching for Far Out and Wandering Worlds . ... The Real Reality Show: Would aliens be anything like us? ... The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in intergalactic noise? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...
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Ссылки http://www.astronomy.com/magazine/ask-astro/2015/02/alien-airwaves -- 63.9 Кб -- 10.04.2016
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2. The Most Common Dust Features
In early mid-infrared observations (c 1970) two prominent dust emission features were discovered. ... Soon after the discovery of the silicate features another feature at about 11.3 microns was discovered in the spectra of some carbon stars, not as wide or as strong as the silicate features but still thought to be due to a solid material. ... less common features: extreme carbon stars, the AlO/silicate complex, the "unidentified infrared" features, unusual silicate features . ...
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Ссылки http://www.stsci.edu/~volk/features1.html -- 7.0 Кб -- 10.06.2011
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3. Feature enhancement: pulsing
Next: Feature enhancement: filtering Up: No Title Previous: Commentary . A sharp contrast is seen between the `crowded' energy map of the modulated oscillations (individual minima and maxima of the signal identified by the Mexican hat wavelet) in section 13 and and the `smooth' presentation of the norm-Morlet transforms of the same data in section 15. ... construct an energy map based on individual events. smooth the map by merging the events that are `close enough' to each other. ...
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Ссылки http://crydee.sai.msu.ru/~vab/Wavelet.rsc/Tutor.dir/node18.html -- 4.1 Кб -- 12.04.1998
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4. Effect of sources evolution on
... 172 ] Briefly, the count rate at the detector from a source at a redshift z is . ... Figure 55 shows the ``Green functions'' for the double compact binary merging rate evolution assuming no collapse anisotropy. ... Another way that diverse peculiarities in the - distribution induced by the sources evolution could arise is connected with a possible non-monotonic character of the star formation rate in galaxies. ... 22 ] Figure 56 shows two-dimensional cuts through the parameter space. ...
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Ссылки http://xray.sai.msu.ru/~mystery/articles/review/node98.html -- 16.9 Кб -- 29.03.1997
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5. Automatic Detection of Linear Features in Astronomical Images
... A new IRAF task has been developed that automatically identifies linear (line-like) features in an image or set of images. ... In order to automatically detect linear features, the first step is to select pixels in the image (Fig. 1 , left panel) that fall within a given data value range. ... Another aspect of extended linear features is that the image space pixels that describe them are in some way adjacent to one another and have a minimum and maximum length. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/cheselkam/ -- 12.9 Кб -- 16.07.1999
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6. The Horsehead Nebula
Astronomy Picture of the Day . ... It is visible as the dark indentation to the red emission nebula in the center of the above photograph. The horse-head feature is dark because it is really an opaque dust cloud that lies in front of the bright red emission nebula. ... Just to the lower left of the Horsehead nebula featured picture is a blueish reflection nebulae that preferentially reflects the blue light from nearby stars . ... Publications with keywords: Horsehead Nebula . ...
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Ссылки http://www.astronet.ru/db/xware/msg/apod/2015-12-16 -- 15.5 Кб -- 16.12.2015
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7. difx:d202wishes [ATNF VLBI Wiki]
... You are here: start €Ё difx €Ё d202wishes . Trace: тАв d202wishes . difx:d202wishes . DiFX 2.0.2 Wish List . ... Bug Fixes . ... This list assumes DiFX 2.0.2 is to be released relative soon (a few months) after DiFX 2.0.1 . ... Bug: FATAL Mk5DataStream::calculateControlParams: bufferindex>=bufferbytes: bufferindex=170311680 >= bufferbytes=170311680 atsegment = 7 . vex2difx (or other) support for creating .machines and .threads (from the eVLBI perspective) . ... vsn: get SMART data . ...
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Ссылки http://www.atnf.csiro.au/vlbi/dokuwiki/doku.php/difx/d202wishes -- 14.6 Кб -- 10.04.2016
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8. PINTofALE EXAMPLE SESSION: via Dracia
This annotated example walks a user through a PINTofALE session using predominantly .par files where available. ... read in line and continuum emissivity databases, . compute a theoretical spectrum, . spectral browsing using SHOW_LINE . ... Carole Jordan type" plot!) in_flx=fitlines_fstr.flx @potem_tool.par ; plot the output EM curves @plotem.par ;NOTE: ; the emission measures are in the IDL save file !ARDB+'example_5.save' ;save,file=!ARDB+'example_5.save',out_LOGT,out_EM,out_multid . ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/doc/EXAMPLE_JJD.html -- 17.4 Кб -- 01.10.2012
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9. ESO - I see unexpected boxy emission-like features in my REDL spectra - where
... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > I see unexpected boxy emission-like features in my REDL spectra - where do they come from? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... The pipeline by default interpolates across the bad columns in the REDL CCD when it creates the master bias, but does not so when it processes the science data. This inconsistency can create boxy emission-like features as seen in the figure below. ...
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Ссылки http://www.eso.org/sci/data-processing/faq/i-see-boxy-emission-like-features-in-my-redl-spectra-where-do-they-come-from.html -- 23.1 Кб -- 10.04.2016
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10. 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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11. New Features in this Release
... JavaScript version 1.3 provides the following new features and enhancements: . ... See the Client-Side JavaScript Guide for details. ... Changes to the Array object. ... The push method returns the new length of the array rather than the last element added to the array. ... Changes to the Date object. ... Added a day parameter to the setMonth method. ... Added the apply method, which allows you to apply a method of another object in the context of a different object (the calling object). ...
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Ссылки http://www.arcetri.astro.it/irlab/doc/library/javascript/clientreference/whatsnew.htm -- 11.0 Кб -- 07.10.1999
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12. Scattered-light algorithm
XMM-Newton Science Analysis System . ... Meta Index / Home Page / Miscellaneous Algorithms Omdetect has a simple extended-source validation function to recognise scattered-light features and ignore them. The algorithm works by assuming a scattered-light feature consists of a number of connected pixels with values significantly above the background interspersed with pixels not significantly above the background and arranged in a random fashion throughout the source region. ...
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Ссылки http://xmm.vilspa.esa.es/sas/8.0.0/doc/omdetect/node32.html -- 3.7 Кб -- 22.10.2008
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13. HISA Poster for the 199th Meeting of the AAS, January, 2002
Note: This poster is similar to another given at the 2001 CASCA meeting . ... We are using Canadian Galactic Plane Survey l 74.2њ, -3.6њ < b This poster gives preliminary results for a full-fledged analysis of the gas properties and distribution of HISA features in the CGPS (S. J. Gibson et al., in prep). ... Most features have very narrow linewidths, indicating quiescent gas. ... GIF | ... Note: In the AAS poster, this CO map was a transparency overlaid on the HISA map. ...
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Ссылки http://www.naic.edu/~gibson/hisa/poster/2002/ -- 16.9 Кб -- 20.11.2005
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14. APOD: 2015 May 13 - The Magnificent Horsehead Nebula
... 2015 May 13 . The Magnificent Horsehead Nebula . ... Explanation: Sculpted by stellar winds and radiation, a magnificent interstellar dust cloud by chance has assumed this recognizable shape. Fittingly named the Horsehead Nebula , it is some 1,500 light-years distant, embedded in the vast Orion cloud complex. About five light-years "tall", the dark cloud is cataloged as Barnard 33 and is visible only because its obscuring dust is silhouetted against the glowing red emission nebula IC 434. ...
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Ссылки http://www.sai.msu.su/apod/ap150513.html -- 5.1 Кб -- 10.04.2016
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15. Creation of the Input Emission Spectrum
Next: Edition of the Up: Typical Run Previous: Creation of the . The coefficients of the continuum are to be entered in keyword CLDCT. Edition of the table containing the emission line parameters. ... Command: . ... Computation of the spectrum. The command COMPUTE/EMI creates a 1D image, containing emission lines and continuum. ... EMI : input table containing the emission line parameter. if no table name is given, the output spectra will contain only . ...
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Ссылки http://www.sao.ru/precise/Midas_doc/doc/94NOV/vol2/node200.html -- 3.2 Кб -- 23.02.1996
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16. Spectrum
... spectrum . ... SPECTRUM will compute synthetic spectra, line profiles equivalent widths, specific intensities, assuming LTE, from model atmospheres of early-type stars. ... sterne models . file containing model atmosphere in 2006 Sterne format . ... T=25000, log g=4.0, vt=0, 1400-1415A. a) NLTE model atmosphere, spectrum computed with SYNSPECv25 (black). b) LTE model atmosphere, same linelist in converted format, spectrum computed with SPECTRUM (red) using this input file and this linelist . ...
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Ссылки http://star.arm.ac.uk/~csj/software_store/guide/spectrum.html -- 9.0 Кб -- 30.08.2007
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17. Wavelength dependence
... The first task assumes the searching for chemical composition and sizes of particles which give the wavelength dependence of the extinction efficiencies close to the observed dependence of . Figure 7: Wavelength dependence of the extinction efficiency factors for homogeneous spherical particles of different sizes consisting of astronomical silicate and amorphous carbon. The dashed segment shows the approximate wavelength dependence of the mean galactic extinction curve at optical wavelengths. ...
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Ссылки http://www.astro.spbu.ru/DOP/8-GLIB/ASTNOTES/node3.html -- 15.8 Кб -- 19.11.2010
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18. ASP: Another Solution Of the Fermi Paradox
home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... Publications of the ASP (PASP) . ... Another Solution Of the Fermi Paradox . ... One of the parameters of these models is the time delay between founding a new colony and the new colony sending out colony ships of its own. During the time delay, usually considered to be on the order of a thousand years, the new colony is building up the industrial base necessary to create more colony ships. ... news | ...
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Ссылки http://www.astrosociety.org/pubs/mercury/34_05/fermi.html -- 15.0 Кб -- 20.04.2012
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19. Titan Press Release
... UA SCIENTIST & TEAM DISCOVER SURFACE FEATURES COVER TITAN (Science contacts: Peter H. Smith, (602) 621-2725; Mark Lemmon, (602) 621-1485; UA Lunar and Planetary Laboratory) . Scientists for the first time have made images of the surface of Saturn 's giant, haze-shrouded moon, Titan. ... About three weeks before Cassini's first flyby of Titan, the spacecraft is to release the European Space Agency's Huygens Probe to parachute to Titan's surface. ... Upper left: hemisphere facing Saturn. ...
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Ссылки http://www.iki.rssi.ru/solar/eng/titanpr.htm -- 8.3 Кб -- 15.10.1997
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20. Theoretical Astrophysics
Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...
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Ссылки http://space.univ.kiev.ua/courses/teor_astroph_e.html -- 8.7 Кб -- 23.02.2005
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