... The optical spectrum of the infrared source IRAS04296+3429 (optical counterpart - G0Ia star, V=14.2) was obtained with the echelle spectrometer PFES at the prime focus of the 6m telescope. ... 1995, Szczerba et al. 1996), our detailed modelling of its spectral energy distribution suggested that this source also should show the 30 m band. ... Stars: abundances - Stars: atmospheres - Stars: AGB and post-AGB - Stars: individual: IRAS04296+3429 . ... Spectral energy distribution . ...

... Астронет | ... Переменные Звезды | ... Почему звезды мерцают . ... Так как атмосфера всегда меняется и перемещается , то число и положение изображений также всегда изменяется и в результате звезда кажется мерцающей . ... звезда, мерцающая выше, и в космосе, над земной атмосферой в действительности выглядит так . ... Публикации с ключевыми словами: Betelgeuse - speckles - star - Мерцающая звезда . Публикации со словами: Betelgeuse - speckles - star - Мерцающая звезда . ... Звезды Охотника . ...

... The HDF Project. ... How to obtain the data catalogs. Observing logs and ancillary information. Technical information on the data reduction pipeline. Technical information on image registration and combination. Technical information on source detection and photometry. HDF Clearinghouse -- followup observations and analysis. ... Hubble Deep Field Academy -- Educational Resource for Middle School students . Hubble Deep Field South The Space Telescope Science Institute home page . ...

Magnitude limit: f opt /f X set to identify ~ 75% of AGN . V ~ < 21: Chandra data products . V ~ > 21: New CCD imaging data . ... 2004), SDSS colors derived for Chandra sources from our NOAO Mosaic imaging plotted against log fx/fr in the 0.5-2 keV band. ... Clustered with stars at low fx/fr are galaxies that likely have little X-ray contribution from an active nucleus. ... Excellent separation of stars and AGN . ... cluster membership from galaxy colors . ... Images & Data | ...

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... R-band images obtained at 0.8 arcsec seeing conditions have allowed us to separate foreground star from point-like extragalactic source and estimate their brightness separately. ... To study the nature and properties of the source, we observed it under high spatial resolution. ... CONCLUSION RTT150 optical observations with sub-arcsecond seeing and low resolution spectra confirm the hypothesis of superposition of a radio source onto a `normal' F/G galactic star proposed by [1]. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...

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