... The variability of the spectrum of the optical component of the IR-source IRAS01005+7910 was discovered for the first time in the BTA spectra [1]. ... The spectral features include absorptions that form in near-photospheric layers, narrow envelope emissions, and emission-absorption profiles that form in photosphere-to-envelope transition layers (the wind). ... Discovery of spectral variation in the optical counterpart of IRAS01005+7910. ... Dashed line - envelope curve of all the SiII 5979 profiles ...

Еще в разделе: (Показать все результаты (>220) - mavr.sao.ru/ )

... 2014 July 21 . Spacecraft Rosetta Shows Comet has Two Components . Image Credit: ESA / Rosetta /MPS for OSIRIS Team ; MPS /UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA . Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/Churyumov–Gerasimenko has a double nucleus came late last week as ESA 's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. ... About APOD | ...

Еще в разделе: (Показать все результаты (>8074) - www.sai.msu.su/ )

• APOD: 2009 April 6 – The International Space Station Expands Again
• APOD: 2011 March 9 - The International Space Station Expands Again
• APOD: 2008 June 23 - The International Space Station Expands Again

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

Еще в разделе: (Показать все результаты (>7162) - www.atnf.csiro.au/ )

• The completeness and reliability of threshold and false-discovery-rate source
• casacore: components/ComponentModels/ComponentType.h Source File
• CO / HI Gas in NGC 253

... To avoid extensive numerical calculations in the statistical simulations, we treat the continuous evolution of each binary component as a sequence of a finite number of basic evolutionary states (for example, main sequence, red (super)giant, helium (Wolf-Rayet) star,     hot WD), in which stellar parameters significantly differ from each other. ... Figure 2: Schematic representation of the typical evolutionary track of a massive binary system with normal and compact star stages indicated. ...

Еще в разделе: (Показать все результаты (>465) - xray.sai.msu.ru/ )

• Introduction
• Why do Radiopulsars not Usually Form Pairs with Normal Stars?
• E-P transitions for different orbits

... The continuum of the Orion Nebula's template contains the nebular contribution plus a combination of Kurucz model atmospheres to simulate the stellar contribution. The fluxes of the UV, optical and near-IR emission lines from different sources are also incorporated into the template (J.R. Walsh, private comm.) The continuum of the planetary nebula has a nebular component and a hot stellar component simulated by an 80000K black body. ...

Еще в разделе: (Показать все результаты (>12969) - www.stsci.edu/ )

• The Spitzer discovery of a galaxy with infrared emission solely due to AGN
• Andy Fruchter's Homepage
• Geometric Distortion

... Credit Copyright: ESA / Rosetta /MPS for OSIRIS Team ; MPS /UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/ChuryumovGerasimenko has a double nucleus came late last week as ESA 's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ... Comet 67P from Spacecraft Rosetta . ...

Еще в разделе: (Показать все результаты (>74967) - www.astronet.ru/ )

• Journal "Peremennye Zvezdy"
• The International Space Station Expands Again
• Астронет > The International Space Station Expands Again

The AstroGuide . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Discovery Telescopes, Inc. has been manufacturing precision astronomical components since its inception in 1991. ... 949) 347-0142 . ... Web Site . http://www.discovery-telescopes.com/ . ... Web . ... 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 ...

Еще в разделе: (Показать все результаты (>277) - www.astronomy.net/ )

• Robert F. Royce, Precision Optical Components, AstroGuide Listing
• S.T.A.N.O. Components Inc., AstroGuide Listing

... 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 . ...

Еще в разделе: (Показать все результаты (>2008) - hea-www.harvard.edu/ )

• Comments on: [ArXiv] component separation methods By: hlee By: Sam Leach
• The AstroStat Slog flux
• The AstroStat Slog emission

... These are the systems which contain compact components of different nature, white dwarf, neutron star or black hole. ... Pulsar appears during X-ray outbursts, but it does not manifest itself in the quiet state (Be stars, BQ Cam, V490 Cep); -falling of low -mass bodies on a compact object due to gravitational capture (a comet nucleus or a meteoroid ) in the detached system (V934 Her, V4641 Sgr). ... B1V-B2Ve star + neutron star & pulsar on the 20.85-day orbit Cep X-4 (ROSAT/PSPC) 1993 . ... 1000/ . ...

Еще в разделе: (Показать все результаты (>762) - jet.sao.ru/ )

• http://mavr.sao.ru/hq/katya/CosmosPh/en/Abstract_Sonbas_2.txt
• Results scientific researchs 7
• Iron abundance in the atmospheres of components of the binary system 41...

... Moscow, Russia E-mail: krivosheev@iki.rssi.ru Notes: · · The Monte Carlo method (s) is also called the statistical test method An innumerable number of processes can be listed the outcome of which is not determined and has probabilistic nature, but these processes obey statistical laws, so to obtain the result we have to make multiple similar tests, i.e. to use the MC method Because probabilistic processes are widely spread in nature, the MC ...

Еще в разделе: (Показать все результаты (>1017) - www.cosmos.ru/ )

• "Stargazers" and National Science Standards
• The Discovery of Atoms and Nuclei
• ASCII files description

... The OM flatfield response is decomposed into two components, the small scale variation from subpixel to subpixel and the large scale variations with a scaling length above several CCD pixels. ... The large scale variations are mainly introduced by filter defects and contamination either on the filter or on the detector window. CAL_omLargeSenseVariation returns the flatfield component describing the large scale variations of the combination of detector plus specified filter. ...

Еще в разделе: (Показать все результаты (>5129) - xmm.vilspa.esa.es/ )

• CCF Components
• Description
• CAL_getRGAObscure

Next: Star Formation and Stellar Up: Stellar Astrophysics Previous: The Chemical Evolution of . Amir Ahmad and Simon Jeffery have been studying some rare stars known, loosely, as helium-rich subdwarfs. ... Further study showed that PG1544+488 is in fact a double star with both stars having extremely helium-rich surfaces -- the first case known. ... Next: Star Formation and Stellar Up: Stellar Astrophysics Previous: The Chemical Evolution of M.E. Bailey . ...

Еще в разделе: (Показать все результаты (>2084) - star.arm.ac.uk/ )

• Armagh Observatory
• Observations with the Faulkes Telescopes
• Unsolved Problems

... Among the objectives of Principal Components Analysis are the following. dimensionality reduction; љ . the determining of linear combinations of variables; љ . ... identification of groups of objects or of outliers. ... Finding a set of principal axes allows the objects to be adequately characterised on a smaller number of (artificial) variables. ... Reduction of dimensionality is practicable if the first new axes account for approximately 75 % or more of the variance. ...

Еще в разделе: (Показать все результаты (>1745) - www.sao.ru/ )

• Direct electron imaging-model
• HyperLEDA documentation: HyperLEDA: catalogue of agnclass (a109)
• The Spectrophotometrical complex in Nasmyth-1 focus

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

Еще в разделе: (Показать все результаты (>1619) - www.adass.org/ )

• TwoFitlines: An Spectrum and Line Analysis Tool
• ADASS 2003 Conference Proceedings
• Determination of Variable Time Delay in Uneven Data Sets

Supernova cosmology : legacy and future Bruno Leibundgut ESO Congratulations! for the discovery of the accelerating expansion of the Universe through observations of distant supernovae Supernova Cosmology · Required observations ­ light curve ­ spectroscopic classification ­ redshift · Required theory ­ cosmological model ­ ( supernova explosions and light emission) · ... 2009 Union2 data set (557 SNe Ia) Goobar & Leibundgut 2011 Supernova Cosmology ­ do we need more? ...

Еще в разделе: (Показать все результаты (>47020) - www.eso.org/ )

• OYSTER Lab
• Mario van den Ancker
• The Hierarchical Stellar Systems Model Format

Geomagnetic disturbances can be monitored by ground-based magnetic observatories recording the three magnetic field components. The global Kp index is obtained as the mean value of the disturbance levels in the two horizontal field components, observed at 13 selected, subauroral stations . ... Geomagnetic activity is the occurrence of K variations. ... But K still remains a local index, describing disturbances in the vicinity of each observatory. ...

Еще в разделе: (Показать все результаты (>854) - www.iki.rssi.ru/ )

• Plasma Phenomena in the Solar System: Discoveries of Prof. K.I. Gringauz - a
• Space Research Institute (IKI) Seminar
• First X-Rays From a Comet Discovered

The Discovery of the Galilean Satellites . ... Probably the most significent contribution that Galileo Galilei made to science was the discovery of the four satellites around Jupiter that are now named in his honor. Galileo first observed the moons of Jupiter on January 7, 1610 through a homemade telescope. He originally thought he saw three stars near Jupiter, strung out in a line through the planet. ... Galileo's Observations of Jupiter's Moons . ... Jupiter . ...

Еще в разделе: (Показать все результаты (>7048) - www.arcetri.astro.it/ )

• K-band Arcetri Obscured Supernova Search - Detected Supernovae
• Water along the outflow from a young nearby protostar: a Herschel view
• HwB: JAMMA Connector (Offline)

OptInt PmWiki : Pm Wiki / Wiki Farm Terminology . ... A wiki farm is nothing more than multiple wikis that share the same installation of the PmWiki software. ... All of the wikis in a farm are more or less the same, except the "home wiki" is a wiki that is located in the same directory as the PmWiki software. ... Home wiki . A wiki in a farm that's located in the same directory as the PmWiki software and therefore shares the farm's cookbook/ and pub/ directories. ... Use PmWiki directory instead. ...

Еще в разделе: (Показать все результаты (>1730) - www.mrao.cam.ac.uk/ )

• Abstract
• Data Format Session at 2001 IAU WG Meeting
• Astrophysics Group Pulsars

. This page uses frames, but your browser doesn't support them.

Еще в разделе: (Показать все результаты (>20) - www.buran.ru/ )

Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic . It is now evident that observed interstellar extinction cannot be explain using particles of only one kind. ... The intensity of radiation after passing a dust cloud is equal to . ... The interstellar extinction is . ... Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic root 2003-04-09 ...

Еще в разделе: (Показать все результаты (>313) - www.astro.spbu.ru/ )