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21. http://www.sai.msu.su/gcvs/gcvs/GCVS5/ReadMe.txt
New GCVS Version (GCVS5) FileName Explanations ----------------------------------------------------------------- ReadMe This file GCVS5 The ... ------------------------------------------------------ 1- 2 I2 --- Constell [1/88]Constellation numeric code 3- 6 I4 --- Number Star number within the constellation 7 A1 --- Component *Component identification 9- 18 A10 --- GCVS * Variable ... Field is non-blank if magMin is a magnitude or amplitude given in a system other than that indicated by magCode. ...
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Ссылки http://www.sai.msu.su/gcvs/gcvs/GCVS5/ReadMe.txt -- 9.3 Кб -- 16.02.2007
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22. The AstroStat Slog Blog Archive [ArXiv] component separation methods
... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...
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Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2009/arxiv-component-separation-methods/index.html -- 23.2 Кб -- 01.03.2014
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23. http://www.naic.edu/vscience/schedule/tpfiles/JonestagA2195tp.pdf
Proposal Identification No.: A2195 Date Received: 2006-Feb-01 13:15:25 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 30 Hours A Search for OH/IR stars in M33 Multi-epoch Spitzer observations of the whole of M33 allow us to select for the brightest variable sources at 3.5 microns with a variabilty amplitude appropriate for a luminous OH/IR star. ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/JonestagA2195tp.pdf -- 47.5 Кб -- 08.02.2006
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24. Project: PAHs
Polycyclic aromatic hydrocarbons in HII regions: correlation with metallicity . ... We have perfomed the aperture photometry of HII regions using infrared images from telescopes Spitzer and Herschel at passbands 3.6, 4.5, 5.8, 8.0, 24, 70 and 160 m. Emission of PAHs are observed at passbands 3.6 - 8.0 m, 24 m is emission likely of hot small particles and finally large particles are responsible for emission at 70 and 160 m. We determine abundances of PAHs using model of Draine Li (2007) . ...
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Ссылки http://www.inasan.rssi.ru/~khramtsova/project_PAH.html -- 5.6 Кб -- 23.02.2015
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25. Restrictions on the Scenario Parameters
... we show that the comparison between the calculated and observed numbers of the most ``fragile'' (from the point of view of the binary evolution scenario ) galactic binary types (such as X-ray low-mass X-ray binaries (LMXB), cataclysmic variables (CV), Be-stars with compact companions, relative number of visible binary radiopulsars with normal and compact secondary components) impose certain constraints on the feasible initial ... Phenomenological Kick Velocity . ...
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Ссылки http://xray.sai.msu.ru/~mystery/articles/review/node41.html -- 6.6 Кб -- 26.02.1997
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26. How do astronomers use Cepheid variables to measure distances? | Astronomy.com
... Tonight's Sky . ... Search By Name Enter coordinates Use current location . ... Observing . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do astronomers use Cepheid variables to measure distances? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...
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Ссылки http://www.astronomy.com/magazine/ask-astro/2015/08/astronomical-distances -- 63.3 Кб -- 10.04.2016
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27. lsst.tcc: tcc.axis.rotFromObs Namespace Reference
lsst.tcc љ 1.2.2-3-g89ecb63 . ... Namespaces . ... NamespaceљList . NamespaceљMembers . ... rotFromObs . ... tcc.axis.rotFromObs Namespace Reference . ... Compute instrument position from observed coordinates. ... listљ . ... def tcc.axis.rotFromObs.rotFromObs . ... position of target in observed coordinates (a coordConv.PVTCoord) . ... targRotXY: position of target in rotator coordinates (a tcc.base.ArrayPVT2) (deg) . ... list tcc.axis.rotFromObs.__all__ = ["rotFromObs"] . ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/TCC/html/namespacetcc_1_1axis_1_1rot_from_obs.html -- 11.1 Кб -- 14.09.2015
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28. 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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29. Determination of Variable Time Delay in Uneven Data Sets
... Time delay determinations in astrophysics are used most often to find time delays between flux density variations in different spectral bands and/or lines in AGNs, and different images of gravitationally lensed QSOs. ... OB used an idea to take into account the known gravitational lensing time delay to get combined radio and optical light curves and then to use them for determination of the possible radio-from-optical time delay. ... Correction for change of time delay and radio flux. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/oknyanskijv.html -- 13.6 Кб -- 23.06.1998
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30. Common problems
... R.A. = 00h55m04s.86, Decl. = -37 41'43".7 . ... Variable star in NGC 1511 . ... Variable star near Pegasus 2001bn IAUC 8624 BV anon 2001bh 7622 K star ugc11635 2001dh 7482 M star ic5374 1999db 7227 QSO anon 1999dc 7227 AGN anon 1999cx 7210 AGN anon 1999cu 7210 AGN anon 1999bs 7141 cat var ugc11093 1998di 6982 dwarf nova anon 1993U 5818 QSO anon 1993V 5818 QSO anon 1992W 5517 M star mcg 8-23-96 1992X 5517 M star mcg 6-32-24 1991ap 5327 QSO anon 1989Z 5162 var ngc4013 1985J 4059 CV ugc6274 ? ...
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Ссылки http://www.rochesterastronomy.org/snimages/snproblems.html -- 7.3 Кб -- 19.04.2014
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31. APOD: 2013 September 9 - Nearby Cepheid Variable RS Pup
... 2013 September 9 . Nearby Cepheid Variable RS Pup . Image Credit: Hubble Legacy Archive , NASA , ESA - Processing: Stephen Byrne . ... Pulsating RS Puppis , the brightest star in the image center, is some ten times more massive than our Sun and on average 15,000 times more luminous. In fact, RS Pup is a Cepheid type variable star , a class of stars whose brightness is used to estimate distances to nearby galaxies as one of the first steps in establishing the cosmic distance scale. ...
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Ссылки http://www.sai.msu.su/apod/ap130909.html -- 6.1 Кб -- 28.02.2014
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32. Cepheids Inconstant Stars which break the rules | Astronotes
... Stars . ... Cepheid variable stars have been known since the 18th century. ... Regularly brightening to a peak over days, weeks or months before fading these variable stars were remarkable curiosities to astronomers in past centuries.€а The term Cepheid is taken from the star Delta Cephei in the constellation of Cepheus, which was identified as variable€а in 1784 by the teenaged prodigy John Goodricke (1764-96). ... Tweets that mention Cepheids: Inconstant Stars which break the rules | ...
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Ссылки http://www.armaghplanet.com/blog/cepheids-inconstant-stars-which-break-the-rules.html?replytocom=960293 -- 52.9 Кб -- 10.04.2016
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33. Multiwavelength Study of Mira Ceti-Type Variable Stars
... There are preliminary series of photometric and radio spectral observations of the above-mentioned stars, archival data on the light curves of the stars, results of the search for OH and H 2 O maser emission in IRAS point sources that possess the IR parameters similar to Miras. ... The aim is a detailed study of the maser emission variability. ... In 1996-1997, astronomical observations of Mira Ceti-type stars (miras) were carried out in three spectral ranges: optical, infrared, and radio. ...
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Ссылки http://comet.sai.msu.ru/~gmr/miras.html -- 13.9 Кб -- 25.11.2015
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34. http://hea.iki.rssi.ru/integral06/papers/G53_Hudec02-16Feb07_17:12:18.pdf
... INTRODUCTION There are four co-aligned instruments onboard the INTEGRAL (The International Gamma-Ray Astrophysics Laboratory) satellite: (1) gamma-ray imager IBIS (15 keV10 MeV, field 9 deg, 12 arc min FWHM), (2) gamma-ray spectrometer SPI (12 keV8 MeV, field 16 deg), (3) X-ray monitor JEM-X (335 keV, field 4.8 deg), and (4) optical monitoring camera OMC (Johnson V-filter, field 5 deg) [1]. ... Most symbiotics are the long-period causins of CVs and X-ray binaries. ... IBIS all obs. ...
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Ссылки http://hea.iki.rssi.ru/integral06/papers/G53_Hudec02-16Feb07_17:12:18.pdf -- 540.7 Кб -- 16.02.2007
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35. The Astronomy Shop - Books - by Astronomy Net
The Astronomy Shop . ... AstroGuide | ... Shop | ... Books | Bright Star Atlas . ... Add this accurate and inexpensive star atlas to your collection for thosetimes you want to travel light. ... Web . www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...
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Ссылки http://www.astronomy.net/shop/books/index.html?item=11 -- 11.7 Кб -- 09.04.2016
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36. Astro-2 and the UIT Experiment
... A1 centered at 2500 angstroms with a width of 1200 angstroms . ... M63 or NGC 5055 is a pleasant spiral galaxy with multiple arms and a bright inner region. The exposure times were 1149 seconds through B1 and 576 seconds through A1. NGC 752 a galactic stellar cluster was observed for 777 seconds through B5 . ... NGC 1365 is a prominent spiral galaxy in the Fornax Cluster. ... The galaxy fits comfortably into one UIT frame and this exposure was for 1360 seconds through A1 and B1. ...
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Ссылки http://zebu.uoregon.edu/uit-t12.html -- 4.3 Кб -- 07.10.1996
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37. Kholtygin et al., AZh (2006)
Kholtygin A.F., Burlakova T.E., Fabrika S.N., Valyavin G.G., Yushkin M.V. Microvariability of Line Profiles in the Spectra of OB Stars: delta Ori A . ... We have studied variability of the spectral lines of the OB star delta Ori A -the brightest component of the delta Ori triple system. ... However, some of the variable features go outside the band, presumably due to either imhomogeneities in the stellar wind from .Ori Aa1 or non-radial pulsations of the weaker components of the system, Aa 2 or Ab. ...
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Ссылки http://www.astro.spbu.ru/staff/afk/Papers/2006/delOriA06abstr.html -- 3.0 Кб -- 19.11.2010
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38. Pulsating aurora
... Pulsating auroras are a visible manifestation of modulation in the fluxes of precipitating magnetospheric electrons. ... Various theories of pulsating auroras are based on the wave-particle interaction between VLF waves and electrons in the equatorial region of the magnetosphere. ... Something about the generation of pulsating auroras . ... Sometimes a correlation between VLF emissions and pulsating auroras is possible to observe at simultaneous ground-based VLF and auroral measurements. ... Geophys...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/SPPHTEXT/aurora/pulsating/pulsating.html -- 9.9 Кб -- 21.12.2007
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39. Division of the Galaxy and Variable Stars
. Alexey Rastorguev's software . Linsvd Linear least-square problem solution by singular value decompisition of matrix . Lafkin Periodogram calculation (Lafler-Kinman statistics) . FourierPeriodogram Periodogram calculation by Fourier-decomposition . Equ2gal Transformation of the equatorial coordinates and proper motions to the galactic frame . Galorbits.zip Calculation of orbits in three-component Milky Way galaxy model
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Ссылки http://lnfm1.sai.msu.ru/~rastor/Software.htm -- 2.7 Кб -- 06.05.2014
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40. arxiv:0705.4195 VSOP: The Variable Star One-shot Project - Научная панорама
... В теме В разделе По форуму . ... Темы, интересные всем ? ... Научная панорама ? arxiv:0705.4195 VSOP: The Variable Star One-shot Project . предыдущая тема следующая тема . ... 0 Пользователей и 1 Гость просматривают эту тему. ... arxiv:0705.4195 VSOP: The Variable Star One-shot Project I. Описание проекта и первый релиз данных (VSOP: The Variable Star One-shot Project I. Project presentation and first data release) . ... VSOP - The Variable Star One-shot Project ( http://vsop.sc.eso.org/ ). ...
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Ссылки http://www.astronomy.ru/forum/index.php/topic,27997.0.html -- 30.4 Кб -- 10.04.2016
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