A Determination of the Radial Velocities of Galaxies

1984 ◽  
Vol 88 ◽  
pp. 397-398
Author(s):  
V.S. Popov ◽  
G.D. Polyakova
Keyword(s):  
Dispersion Curve ◽  
Wavelength Range ◽  
Ussr Academy ◽  
Chemical Elements ◽  
Emission Lines ◽  
Special Astrophysical Observatory ◽  
Comparison Spectrum ◽  
Primary Focus ◽  
Academy Of Sciences

Fourteen galaxies were studied using 24 spectra, obtained with the 6 meter telescope of the Special Astrophysical Observatory of the USSR Academy of Sciences. The dispersion of the spectrograph in the primary focus of the telescope was 189 A/mm.The neon spectrum was studied in order to determine the wavelengths of the comparison spectrum and to plot a dispersion curve. The following Ne I lines were used for a comparison: 6143, 6266, 6506, 6678, 6717, 6929 and 7032 A. In galactic spectra (wavelength range of 4300 - 7000 A) 21 absorption lines were detected. They belong to H, Na I, Ca I, Ca II, Mg I and otner chemical elements. Three emission lines of the night sky with wavelengths of 5577, 5890 and 6300 A are seen in the spectra of galaxies. They were also used as reference lines for our determination.

scholarly journals X-ray spectral analysis development in Novosibirsk city (Electron probe microanalysis and X-ray fluorescence analysis using the synchrotron radiation)

2021 ◽  
Vol 25 (2) ◽  
pp. 155-173
Author(s):  
A. G. Revenko ◽  
Keyword(s):  
Spectral Analysis ◽  
Synchrotron Radiation ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Ussr Academy ◽  
Chemical Elements ◽  
Fluorescence Analysis ◽  
X Ray ◽  
Academy Of Sciences

Current article considers the contribution of X-ray physicists from the city of Novosibirsk to the formation and development of the two X-ray spectral analysis directions: electron probe microanalysis and X-ray fluorescence analysis using the synchrotron radiation. The research on geological topics at the Institute of Geology and Geophysics of the Siberian Branch of the USSR Academy of Sciences using the MS-46 electron probe microanalyzer of the French company CAMECA (since 1967) served as the basis for the development of methods for the quantitative X-ray microanalysis of rock-forming minerals as the methods for quantitative determination of the contents of elements with low atomic numbers in the long-wavelength X-ray region were still in their infancy. With the development and the improvement of the method’s technical base (microprobes JXA-5A, JEOL, 1975; Kamebaks Micro, CAMECA, 1981; JXA-8100, JEOL, 2003; JXA-8230, JEOL, 2016; electronic computing), the software for controlling the operation of devices and converting the measured intensities of the analytical lines into the concentration of elements continued to changed and improve. The first results of elemental analysis, obtained using the synchrotron radiation to excite X-ray fluorescence at the VEPP-3 accelerating ring at the Institute of Nuclear Physics of the Siberian Branch of the USSR Academy of Sciences, were published in1977. Inthe following years, at the station of elemental SRXRF, samples of various nature were studied — biological (bio tissues of the heart, liver, lungs, hairs, bones, plants), geological, environmental objects (soils, sediments, aerosols, etc.), archaeological sites as well as new technological materials. The procedures for the determination of chemical elements in low-mass samples (milligrams) in unique samples of lunar soil samples, biopsy material of human myocardial tissues, etc. have been developed. The scanning device at the elemental SRXRF station made it possible to obtain the information for reconstructing the climate change for different periods of time – from 100 to 1000 years. A new non-destructive method of confocal X-ray microscopy for studying micro-objects and visualizing the distribution of chemical elements in extended objects on this station are currently being developed.

“Against the Background of Pushkin”: S.I. Vavilov’s Speech at a Meeting at the Poet’s Monument in June 1949

2020 ◽  
Vol 17 (5) ◽  
pp. 550-559
Author(s):  
Aleksandr Yu. Samarin
Keyword(s):  
Literary Criticism ◽  
Communist Party ◽  
Ussr Academy ◽  
Russian Scientist ◽  
Critical Attitude ◽  
150Th Anniversary ◽  
Soviet State ◽  
The Press ◽  
Academy Of Sciences

The article introduces a previously unpublished speech of the outstanding Russian scientist-physicist, President of the USSR Academy of Sciences, academician Sergey Ivanovich Vavilov, which was delivered by him at the anniversary meeting held on June 5, 1949, at the monument to Alexander Pushkin in Moscow in connection with the celebration of the 150th anniversary of the great Russian poet’s birth. S.I. Vavilov was a great connoisseur of Pushkin’s poetry and literature about him. In the second half of the 1940s, Vavilov actively participated in projects to prepare the anniversary celebrations dedicated to Alexander Pushkin and perpetuate the memory of the poet. Analysis of S.I. Vavilov’s speech, which, unlike his other “Pushkin speeches”, was not intended for the press, shows that in evaluating the great poet’s work, along with the use of cliches, traditional for the epoch, the scientist also took certain liberties. In particular, he did not utter the ritual words praising Stalin, the Communist Party and the Soviet State. The poet Ya.P. Polonsky quoted by Vavilov was not among the classics recognized by Soviet literary criticism, and the selected quote from him could be interpreted as a hint of condemnation of the surrounding Stalinist reality. Numerous fragments of the scientist’s personal diaries indicate his critical attitude towards the latter, in particular.

The Anniversary of the Ussr Academy of Sciences

1975 ◽  
Vol 17 (6) ◽  
pp. 66-79
Author(s):  
V. A. Leshkovtsev
Keyword(s):  
Ussr Academy ◽  
Academy Of Sciences

Dissecting quasars with the J-PAS narrow-band photometric survey

2019 ◽  
Vol 15 (S356) ◽  
pp. 12-16
Author(s):  
Silvia Bonoli ◽  
Giorgio Calderone ◽  
Raul Abramo ◽  
Jailson Alcaniz ◽  
Narciso Benitez ◽  
...  
Keyword(s):  
Emission Line ◽  
Wavelength Range ◽  
Software Package ◽  
Narrow Band ◽  
Active Galaxies ◽  
Emission Lines ◽  
Low Resolution ◽  
Strong Emission ◽  
Optical Wavelength ◽  
Quasar Spectra

AbstractThe J-PAS survey will soon start observing thousands of square degrees of the Northern Sky with its unique set of 56 narrow band filters covering the entire optical wavelength range, providing, effectively, a low resolution spectra for every object detected. Active galaxies and quasars, thanks to their strong emission lines, can be easily identified and characterized with J-PAS data. A variety of studies can be performed, from IFU-like analysis of local AGN, to clustering of high-z quasars. We also expect to be able to extract intrinsic physical quasar properties from the J-PAS pseudo-spectra, including continuum slope and emission line luminosities. Here we show the first attempts of using the QSFit software package to derive the properties for 22 quasars at 0.8 < z < 2 observed by the miniJPAS survey, the first deg2 of J-PAS data obtained with an interim camera. Results are compared with the ones obtained by applying the same software to SDSS quasar spectra.

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