The spatial power spectra of Galactic . ... Neutral hydrogen is an important constituent of the interstellar medium, and has been widely studied at 21 cm line emission. Within the Galactic plane, structure of HI emission is seen over wide range of angular scales, down to tens of milliarc seconds. ... In the high galactic latitudes an alternative approach is seen more reasonable - to describe HI emission in terms of an angular power spectrum over a range of scales. ... Figure 1. ...

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. ...

Aims: We present an analysis of a galaxy (SAGE1CJ053634.78-722658.5) at a redshift of 0.14 of which the infrared (IR) emission is entirely dominated by emission associated with the active galactic nucleus. Methods: We present the 5-37 ЮМm Spitzer/IRS spectrum and broad wavelength spectral energy distribution (SED) of SAGE1CJ053634.78-722658.5, an IR point-source detected by Spitzer/SAGE. ... We compare the source with models of emission from dusty tori around AGNs. ...

... 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. ...

... 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. ...

... The visibility datasets possibly contain correlations for different polarizations and Stokes parameters. There are two basic ways that polarization characteristics can be measured: firstly, two orthogonal feeds can be present on the antennas, and the four different polarization correlations from a baseline can be taken and recorded. ... There are two ways the user can determine which polarizations he or she wants to process, either with the select parameter, or with the stokes parameter. ...

... AAS link ] . ... Our internal perspective makes it difficult to determine the spiral structure of our own galaxy. ... H I absorption, on the other hand, traces colder, denser gas that should be more confined in discrete clouds and perhaps discrete spiral arms. In addition, H I self-absorption (HISA) requires background H I emission at the same velocity as the foreground absorbing gas, thus introducing a much-needed constraint on the large-scale sightline geometry and kinematics. ...

... Back to the Live Radiation Monitor Data The radiation monitor on board XMM-Newton registers the total count rate and basic spectral information on the background radiation impinging on the spacecraft and its scientific instruments. ... Counting of pulses for a selected energy band and above the low thresholds. ... Sensitivity: due to the electronic threshold, actually only electrons with energy greater than 130 keV and protons greater than 1.3 MeV can be measured by this unit. ...

CORONAL METALLICITIES OF ACTIVE BINARIES Vinay Kashyap, Jeremy Drake, Deron Pease Harvard­Smithsonian Center for Astrophysics JЁ urgen Schmitt Max Planck Institut fЁ ur Extraterrestriche Physik SUMMARY We analyze EUV and X­ray data on a sample of X­ray active binary stars (HR 1099, – And, UX Ari, VY Ari, ё UMa, 44i Boo, and YY Gem) to determine coronal abundances. EUVE spectrometer data are used to obtain line fluxes, which are then used to determine Differential Emission Measures (DEMs). ...

... Program of the Course of Radio Astronomy . Moscow State University , Physics Department , Astronomy Division , 4 th year, 60 hours in total) . ... Molecular maser emission. ... The emission of the interstellar neutral hydrogen. ... Pacholczyk, A. G. Radio Astrophysics, W. H. Freeman & Co., ... Frontiers of Astrophysics, Avrett, E. H., ed., Harvard University Press, Cambridge, Mass., ... Kaplan, S. A., Pikelner, S. B. The Interstellar Medium, Harvard University Press, Cambridge, Mass., ...

... We have started a programme of observations of nearby starburst and AGN galaxies with MICHELLE, with the aim of investigating the spatial extent of "Unidentified Infrared Bands (UIB)" emission in these galaxies, and in particular relating these to multi-frequency matched resolution radio maps. ... The spatially integrated MICHELLE spectrum of NGC 7469 in the 8 - 11.5µm range shows an equivalent width of 11.3µm UIB feature which is much smaller then measured by ISO. ...

... Первая страница Назад Продолжить Последняя страница Обзор Изображения . Публикации с ключевыми словами: Галактика - звездная астрономия . Публикации со словами: Галактика - звездная астрономия . ... Дальний рукав в 3 кпк от центра . Лекции по Галактической Астрономии. ... Стрелец A*: быстрые звезды вблизи центра Галактики . ... KINO.RU - фильмы, кино театры, кино, расписание кино в г. Москва | ... Дизайн квартир и дизайн интерьера . ... Нужно рекламное агентство? ...

... VOLUME**, **PUBLICATION YEAR** **EDITORS** Time-resolved spectral analysis of the pulsating helium star V652 Her C.S. Je ery, V.M.Woolf Armagh Observatory, College Hill, Armagh BT61 9DG, N. Ireland D.L.Pollacco School of Physical Sciences, Queen's University Belfast, Belfast BT7 9NN, N. Ireland Abstract. We present a summary of a new time-dependent spectro- scopic analysis of the pulsating helium star V652 Her. ... The rst direct evidence of a supersonic shock at minimum radius is also obtained. ...

First light from the Superconducting Integrated Receiver on board Terahertz limb sounder TELIS P. Yagoubova, G. de Langea, R. Hoogeveena, A. de Langea and V. Kosheletsb a Netherlands Institute for Space Research, SRON, the Netherlands b Institute of Radio Engineering and Electronics, IREE, Russia Abstract-- We present the flight configuration and performance of the Superconducting Integrated Receiver (SIR) channel on the TELIS instrument (Terahertz and Submm Limb Sounder). ...

... 1998,ASP Ser. ... Thompson Djorgovski S., Trauger VLT Spectroscopy the 4.11 Radio Galaxy TN J1338-- 1942 DE BREUCK , W. VAN BREUGEL MINNITI 2,3 MILEY 1 RжTTGERING 1 S.A. STANFORD 2 and C. CARILLI 4 Sterrewacht Leiden, The Netherlands (debreuck, miley ,rottgeri@strw.leidenuniv.nl) Institute Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, U.S ... Breugel, Breuck, Stanford, S. A., RЖttgering, Miley, RЖttgering, Miley, Hunstead, 1997, A&A, 358. ...

... 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. ...

We present spectral line images of [CI] 809 GHz, CO J=1-0 110 115 GHz and HI 1.4 GHz line emission along a ~1ТА region in the l=328ТА direction of the Galactic plane. The [CI] data comes from the High Elevation Antarctic Terahertz (HEAT) telescope, a new facility on the summit of the Antarctic plateau where the precipitable water vapour falls to the lowest values found on the surface of the Earth. ... The [C/CO] abundance ratio averaged through the filament is found to be approximately unity. ...

... The spatially resolved structure near the hydrogen emission H line was found in the spectrum taken with the BTA/SCORPIO in June, 2013. ... The fragment of the Nova V1494 Aql spectrum is shown in Fig.1. ... The Nova V1494 Aql has passed the stage of the supersoft X-ray source (SSS) in the period between 218 and 516 days after the visible light maximum (Schwarz et al., ... The spectrum of Nova V1494 Aql taken on 2013 June 9 with BTA/SCORPIO . ... The vertical lines are the lines of night sky emission....

What if we could determine if a given star is likely to host a planetary system like our own by breaking down its light into a single high-resolution spectrum and analyzing it? ... The dark bands result from specific chemical elements in the star s outer layer, like hydrogen or iron, absorbing specific frequencies of light. By carefully measuring the width of each dark band, astronomers can determine just how much hydrogen, iron, calcium, and other elements are present in a distant star. ...

... Astronomy in Ukraine Past, Present, and Future (MAO-2014) . July 17, 2014, Kyiv, Ukraine . ... of the Main Astronomical Observatory of the National Academy of Sciences of Ukraine . ... The Conference MAO-2014 is devoted to the 70th anniversary of the Main Astronomical Observatory of the National Academy of Sciences of Ukraine (MAO NASU). ... The Conference will be held at the MAO NASU, Kyiv, Ukraine. ... Main Astronomical Observatory of NASU, Kyiv, Ukraine . ... Main Astronomical Observatory . ...