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http://www.asc.rssi.ru/RadioAstron/publications/articles/apj2016_820_l9.pdf.
1. ASP: Star Science in the Autumn Sky
Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/32/starscience4.html -- 18.8 Кб -- 02.10.2012
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2. http://www.sao.ru/cats/~satr/RFSymp/abs/17_Korzhavin.ps
ESTIMATIONS OF EFFECTIVE HEIGHT, SIZE AND BRIGHTNESS TEMPERATURE OF SOLAR CYCLOTRON SOURCES A.N. Korzhavin, T.I. Kaltman Special Astrophysical Observatory of RAS, SaintPetersburg, Russia arles@mail.ru The modeling of microwave emission from a spotassociated cyclotron source was done to refine the method of estimations of e#ective brightness temperature, size and height above photosphere in the processing of RATAN600 observations. ...
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Ссылки http://www.sao.ru/cats/~satr/RFSymp/abs/17_Korzhavin.ps -- 50.0 Кб -- 09.10.2006
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3. Low Surface Brightness Galaxy Gallery
In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...
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Ссылки http://zebu.uoregon.edu/sb2.html -- 4.8 Кб -- 26.05.2000
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4. Detection of unique bright radio flare of X-ray binary
... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...
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Ссылки http://www.sao.ru/Doc-en/SciNews/2016/Trushkin/ -- 8.4 Кб -- 10.04.2016
[ Сохраненная копия ] Ссылки http://mavr.sao.ru/Doc-en/SciNews/2016/Trushkin/ -- 8.4 Кб -- 10.04.2016
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[ Сохраненная копия ] Ссылки http://mavr.sao.ru/Doc-en/SciNews/2016/Trushkin/ -- 8.4 Кб -- 10.04.2016
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5. THE BRIGHT SUPERNOVA 1991T IN NGC 4527; AN AMATEURS PRESPECTIVE
... The bright supernova (hereafter SN) in the galaxy NGC 4527 was first sighted by S. Knight (USA) on April 13.17UT at magnitude ~14.0v. The report of the sighting was subsequently forwarded by phone to the AAVSO. ... SN 1991T. The galaxy NGC 4527 is an Sb(s)II type galaxy with an apparent Blue magnitude of 11.32 (Shapley-Ames, 1981). ... An analysis of this event utilizing visual observations by amateurs, plus a light curve is presented.. ... THE LIGHT CURVE: . ... ISN SN 1991T web page . ...
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Ссылки http://www.sai.msu.su/mirrors/isn/snimages/sn1991t.html -- 9.2 Кб -- 05.02.2013
[ Сохраненная копия ] Ссылки http://www.rochesterastronomy.org/SNIMAGES/sn1991t.html -- 9.3 Кб -- 10.04.2016
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[ Сохраненная копия ] Ссылки http://www.rochesterastronomy.org/SNIMAGES/sn1991t.html -- 9.3 Кб -- 10.04.2016
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6. http://www.atnf.csiro.au/observers/memos/AT39.3_124.pdf
ATCA flux density scale at 12mm R.J. Sault 7 December 2003 The flux of PKSB1934-638 at centimetre wavelengths has been well-studied by Reynolds (1994), and is in routine use as the primary flux density reference for the ATCA. ... With the installation of receivers at the ATCA which operate in the 16-25 GHz window, there is a clear need for a flux density scale in this band. ... The data were measured as part of pro ject C1225 and as special observations to determine the flux density of 1934-638. ...
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Ссылки http://www.atnf.csiro.au/observers/memos/AT39.3_124.pdf -- 54.0 Кб -- 06.03.2006
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7. Absorption line spectra of the UV bright z=2.4 QSO HE 1122-1649
... We present ultraviolet and optical spectra of the bright (V=16.5), high-redshift ( ) QSO HE1122 - 1649 (Reimers et al. 1995a,1995b). ... Keywords: absorption lines . ... The combined data are shown in Figure 1. ... The Ly profile reveals an absorbing subcomponent at in agreement with results from heavy element absorption lines detected in the high resolution optical data. ... Figure: Velocity profiles of heavy element absorption lines arising in the damped Ly system as seen in the optical data. ...
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Ссылки http://www.stsci.edu/stsci/meetings/shst2/koehlers.html -- 14.3 Кб -- 15.06.2005
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8. Comet Center of SAI
. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .
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Ссылки http://comet.sai.msu.ru/comet/ -- 2.7 Кб -- 17.06.2012
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9. Coronal Bright Points: Another Oscillating Environment
... Ignacio Ugarte Urra's PhD thesis topic is the investigation of coronal bright points. In his first paper (in collaboration with Gerry Doyle and Maria Madjarska) he investigated the formation, evolution and decay of a coronal bright point via a spectroscopic analysis of its transition region counterpart and the evolution of the underlying magnetic bipole during 3 days of almost continuous observations. ... In general the bright point has a radiance 4 times higher than that of the network. ...
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Ссылки http://star.arm.ac.uk/annrep/annrep2003/node50.html -- 6.2 Кб -- 18.05.2004
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10. NTT Observations of Bright Comet 1995 Q1 (Bradfield)
.
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Ссылки http://www.eso.org/public/images/eso9519a/zoomable/ -- 1.9 Кб -- 12.04.2016
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11. MEMORANDUM
... This implies that the scientific output be much larger than that from modern ground based observations in the same scientific field. ... In order to obtain a full picture of the variable structure of such objects with the very high angular resolution it is necessary to build in future multi-element space systems similar to ground arrays. ... 30,000 km) for objects within = ? ... structure and motion of extragalactic sources as a result of their lensing by extragalactic objects . ...
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Ссылки http://www.asc.rssi.ru/RadioAstron/documents/memo/feb98/memo_feb98.htm -- 12.6 Кб -- 15.09.1999
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12. http://www.naic.edu/vscience/schedule/tpfiles/AlakoztagV2732tp.pdf
Proposal Identification No.: V2732 Date Received: 2012-Mar-01 18:04:00 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: Regular VLBI Galactic 8 Hours 1 hour Space-VLBI observations of compact structures in OH masers with high sensi- tivity. ABSTRACT: We request 8 hours of Arecibo time for a non-imaging space-VLBI observations of two most compact OH masers with RadioAstron. ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/AlakoztagV2732tp.pdf -- 48.7 Кб -- 06.03.2012
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13. RATAN-600 antenna
... BTA and RATAN-600 are largest optical and radio telescopes in Russia. ... Antenna of RATAN radio telescope consist of 576-m circle of 895 elements (2 x 11.5 m), which could use as four independent sectors (225 elements) of that reflector (named: North, South, West and East). Four different feed-cabines (N1,2,3,5) with secondary mirrors could simulteniously collect radio emission from these four sectors and be used in programs of Continuum , Spectral and Solar observations. ...
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Ссылки http://mavr.sao.ru/hq/lran/ratan/ratan_e1.html -- 10.4 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/lran/ratan/ratan_e1.html -- 10.4 Кб -- 01.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/lran/ratan/ratan_e1.html -- 10.4 Кб -- 01.10.2012
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[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/lran/ratan/ratan_e1.html -- 10.4 Кб -- 01.10.2012
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14. Procedures for Observations
... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...
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Ссылки http://www.arcetri.astro.it/irlab/instr/longsp/doc/proc_ob.html -- 7.9 Кб -- 16.02.2000
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15. Bojan Nikolic -- 90 GHz Continuum Observations of Messier 66
... Radio emission at around 90 GHz from star-forming galaxies is expected to be strongly dominated by the free-free component due to ionising radiation from massive, short-lived, stars. We present high surface-brightness sensitivity observations at 90 GHz of the nearby star-forming galaxy Messier 66 with resolution of about 9 arcsec (corresponding to a physical scale of about 500 pc) and analyse these observations in combination with archival lower frequency radio and mid-infrared measurements. ...
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Ссылки http://www.mrao.cam.ac.uk/~bn204/blog/2012/05/09/m66-cont.html -- 5.1 Кб -- 05.10.2015
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16. SAI Space Monitoring Laboratory
Lab . Main page News People . ASA . Master . Master net Homepage . ... Lomonosov Moscow State University Sternberg Astronomical Institute . ... MASTER . ... Lomonosov (ShOK) . ... About Space Monitoring Laboratory, scientific directions, instruments, contacts . People, who work in lab . Latest news and news archive . ... All news ...
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Ссылки http://master.sai.msu.ru/en/news/?page=7 -- 11.7 Кб -- 09.04.2016
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17. http://xmm.vilspa.esa.es/docs/documents/Appendix/omcal_oct00/omcal_oct00_zpt.ps.gz
Zero Point and Colour Transformation Zeropoint Definition ffl Throughput is stable (LBB227 25/02/00 r39 vs 25/08/00 r131) ffl Throughput fudged using LBB 227 and BPM16274 measurement ffl Vega observation simulated ffl Simbad literature survey, average brightness / colour : -- m V = 0.03 -- BV=0.00 -- UB=0.005 ffl zero points fixed based on simulated Vega observation (cts/sec) -- U, B, V ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/Appendix/omcal_oct00/omcal_oct00_zpt.ps.gz -- 25.8 Кб -- 13.11.2000
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18. NGC 6302: Big, Bright, Bug Nebula
... 29.04.2007 . ... ESA , NASA Explanation: The bright clusters and nebulae of planet Earth's night sky are often named for flowers or insects , and NGC 6302 is no exception. With an estimated surface temperature of about 250,000 degrees C, the central star of this particular planetary nebula is exceptionally hot though -- shining brightly in ultraviolet light but hidden from direct view by a dense torus of dust. ... April . ... April 2007 . ... 2007 2008 . ... NASA Official: Jay Norris. ...
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Ссылки http://www.astronet.ru/db/xware/msg/1221803 -- 14.4 Кб -- 29.04.2007
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19. Practical Astrophysics
Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...
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Ссылки http://space.univ.kiev.ua/courses/pract_astroph_e.html -- 7.6 Кб -- 23.02.2005
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20. APOD: 2007 April 29 - NGC 6302: Big, Bright, Bug Nebula
... 2007 April 29 . NGC 6302: Big, Bright, Bug Nebula . ... ESA , NASA . Explanation: The bright clusters and nebulae of planet Earth's night sky are often named for flowers or insects , and NGC 6302 is no exception. With an estimated surface temperature of about 250,000 degrees C, the central star of this particular planetary nebula is exceptionally hot though -- shining brightly in ultraviolet light but hidden from direct view by a dense torus of dust. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap070429.html -- 5.1 Кб -- 02.10.2012
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