... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

... IDL procedure to display ; a) a region of spectrum , together with a fit , if supplied, ; b) positions and relative strengths (gf or W_lambda) of lines in ; common atomic spectra may be marked in the lower panel. ; c) lines of sleceted atoms are identified in the top panel ; ; Command arguments: ; specfile - character string - name of file containing spectrum (and fit ) ; assumed to be x,y file with 3- ... Assesses lines in linelist by the strength values "listfr". ...

... 421.0 + 422.0 + 423.0 Table 6: Sources from the Second EGRET Catalog AND Supplement not Appearing in the Third Catalog ------------------------------------------------------------------------------- Source (TS)1/2 Present in 2EG Analysis ------------------------------------------------------------------------------- 2EG J0403+3357 4.5 3.2 2EG J0426+6618 4.5 3.2 2EGS J0500+5902 4.0 3.3 2EGS J0552-1026 4.3 3.5 2EG J1136-0414 4.1 3.2 ...

Next: Identifications and Efficiency Up: THE DEEP X-RAY RADIO Previous: Source Classification . ... For some sources which did not have NVSS positions before the time of optical observations, arcsecond positions from the Texas survey (Douglas et al. 1996) and NED (typically based on VLA data) were used. ... All X-ray/radio sources without counterparts on the survey plates were imaged at either the KPNO 0.9m or the CTIO 0.9m telescopes. ... Previously Identified Sources . Sample Properties . ...

Next: Analysis Tools for Nebular Emission Lines . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... The direct image is used to locate objects of interest, to find the position of the appropriate spectra in the grism image, to determine the optimal extraction technique to use, and to calibrate the wavelength range of the extracted spectra. ... Figure 1: The NICMOSlook User Interface . ...

Astronomy Picture of the Day . ... Credit: Walter Lewin ( MIT ) Explanation: What caused this ring of colors? At the time of this writing, MIT Physics Professor Walter Lewin had yet to find someone who can give the correct explanation. ... Not APOD editors . ... Shortly after he gives the explanation on December 7 during a lecture in his course Vibrations and Waves at MIT, APOD will carry a link to it. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...

... The spectrum of the Sgr B2 molecular cloud has been surveyed between 215 and 265 GHz towards 3 positions, the dense cores Sgr B2(N)and Sgr B2(M), and the quiescent core Sgr B2(NW). ... The Sgr B2 molecular cloud, located approximately 100 pc from the Galactic Centre and with a mass of , is one of the most extreme cases among star formation sites ( Lis & Goldsmith (1991) ). ... Of the 3 observed positions Sgr B2(N) has the strongest line emission in most molecular species with a few exceptions. ...

... The radio view of the Seyfert galaxy PKS 2004-447 . ... The Fermi gamma-ray satellite has identified over 1500 gamma-ray sources with other galaxies. The majority are classified as flat-spectrum radio quasars, or BL Lacerate objects: just a handful have been identified with narrow-line Seyfert galaxies. ... These characteristics are extremely rare among gamma-ray loud AGN. Reference: "The Gamma-Ray Emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy PKS 2004-447 II. ... today * ATNF | ...

... 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., ...

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. ...

... T2292 Date Received: 2006-Oct-02 12:13:11 Technical Page Proposal Type: General Category : Sub- Category : Observation Category : Total Time Requested: Minimum Useful Time : Prop osal Title: Regular Terrestrial Aeronomy Radar Plasmasphere 120 Hours 8 hours (beginning at 16 UTC) Comprehensive Ionospheric Characterization Within Storm Enhanced ...

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 . ...

. Wavelength (nm) . To an expert (like me), every bump and wiggle in a spectrum like this tells a story of what the gas is made of, how it’s moving, and how hot it is. Strength of light at this wavelength . Previous slide . Next slide . Back to first slide . View graphic version .

When entering Identification section user should open the file with observed positions of objects which are to be identified (the file may be first created). ... Format of observations must coincide with that of optic observations in which they are published by Minor Planet Center (observed position may be presented as “accurate” or “approximate” one): . ... observed right ascension (in hours, minutes, and seconds of time (“accurate position”) or in hours and minutes (“approximate position”) . ...

Magnetic Stars, 2011, pp. ... The Ce III spectrum is clearly present in a Cen, making it a candidate for the hottest CP star with a lanthanide in its spectrum. Also present are Kr II, and interesting broad absorption features. ... Key words: Stars: chemically peculiar ­ stars: variable ­ stars: individual (a Cen) ­ line: identification 1 New Identifications in the a Cen Sp ectrum The helium variable a Cen is a bright and well­studied star. ... 2010). ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2004 September 13 . Identify this Phenomenon . Credit: Walter Lewin ( MIT ) . ... At the time of this writing, MIT Physics Professor Walter Lewin had yet to find someone who can give the correct explanation. ... Additionally, Professor Lewin will answer appropriate e-mail questions and guesses sent to asklewin@space.mit.edu . ...

. RC-archive . RC0907+0436 . RC0908+0451 . RC0934+0505 . RC0942+0447 . RC0945+0454 . The R-band contours (BTA) superposed . on 1490MHz image (VLA) ps . The map (1490MHz,VLA) superposed . on the R-band image (BTA) ps . Last updated 30 Jul 2001

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Download Izmccd (~2.7 MB). Solution of problems at identification of star field. ... 2) Scale is not correct. ... In this case algorithm of identification will revise all values of scale from twice smaller up to twice greater. ... There should be more than value of the field "Number of stars in frame". ... The star field is considered identified if number of the identified stars more or equally to this value. It is necessary to set value from 4 up to value of field "Number of stars in frame". ...

... Tonight's Sky . ... Sky this Month . ... Star Atlas . ... stars . ... Most massive binary star identified . The present day total mass of binary star R144 is between 200 and 300 times that of the Sun, depending on its evolutionary stage. ... The massive binary star R144 is located in an outer area of the star-forming region 30 Doradus in the Large Magellanic Cloud. ... NGC 3603-A1 was formerly known as the most massive binary star, with a total mass that is equal to 212 times the mass of the Sun. ...