Astronomy Picture of the Day . ... 21.02.2007 . ... Credit Copyright: Stefan Seip (AstroMeeting.de) Explanation: What's that new star in the sky? The star might appear new, but it's actually just the variable star Mira near its brightest. ... Pictured above a castle in Stuttgart , Germany , last week, red giant star Mira appeared near its maximum brightness of magnitude 2. ... February 2007 . ... Publications with keywords: Mira - variable star . Publications with words: Mira - variable star . ...

... 2007 February 21 . Mira Over Germany . ... The star might appear new, but it's actually just the variable star Mira near its brightest. ... Pictured above a castle in Stuttgart , Germany , last week, red giant star Mira appeared near its maximum brightness of magnitude 2. ... Details of Mira's variability are still being researched , but the reason for Mira's pulsations are thought related to periodic changes in the thickness of parts of Mira's atmosphere. ... About APOD | ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

GCVS Research Group: . Recent publications . Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 81st Name-List of Variable Stars. ... Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 80th Name-List of Variable Stars. ... Samus N.N., Kazarovets E.V., Kireeva N.N., Pastukhova E.N., Durlevich O.V. General Catalogue of Variable Stars: Current status and new Name-lists Odessa Astronomical Publications, 2010, V. 23, p. 102-105. ...

... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

18th of February 2016 . Celestial Fireworks in M87 . ... The Hubble Space Telescope was used to hunt for novae in the central part of the Messier 87 (M87) galaxy - top image. Hubble took images of M87 during a ten week period in order to find these variable sources. The bottom image shows the light curve of one nova where we can appreciate how this new source appears and then fades away again. This new study found that on average every day of the year a nova goes off in M87. ...

Follow-up observations with the University of Washington 0.76 m telescope at Manastash Ridge Observatory (MRO) of the Sloan Digital Sky Survey (SDSS) cataclysmic variable (CV) SDSS J170053+400358 are presented. ... They estimate that the dimming amounted to about 0.028 mag (using two comparison stars that were each about 4 mag fainter than HD 209458). only UW affiliated authors have been listed, student researchers are marked with an ``*'' . ... XTE J1859+226" UW affiliated authors: *Kevin Krisciunas. ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . Monograph Publications . IAU Publications . ... Publications of the ASP (PASP) . ... Mercury Magazine . ... Order Mercury Issues . ... Astronomy Beat . ... Mercury Magazine Contents and Select Excerpts . ... January/February 2006 . ... Deadly Cosmic Storms, Jennifer Birriel and Ignacio Birriel . ... Sky Events, Richard Talcott . January Sky Map | February Sky Map | ...

An image of the grand design of spiral galaxy M100 obtained with NASA's Hubble Space Telescope resolves individual stars within the majestic spiral arms. ... Hubble has the ability to resolve individual stars in other galaxies and measure accurately the light from very faint stars. This makes space telescope invaluable for identifying a rare class of pulsating stars, called Cepheid Variable stars embedded within M100's spiral arms. ... 617) 495-7062 . Fax: (617) 495-7356 . ...

... A new bright LBV (Luminous Blue Variable) star was detected in M33 galaxy. LBV stars are the most massive stars in the final stages of evolution before exploding in of supernovae. ... The new LBV star (Fig.1) is the seventh in M33. ... It is one of the brightest LBV stars of the M33 galaxy. ... The brightest object is the core of the galaxy, - a compact star cluster comprising a supermassive black hole. The new LBV star N93351 is located down and to the left from the core. ...

... Be/X-ray binaries and candidates", Natalya V. Raguzova and Sergei B. Popov, Astron. ... Population Synthesis of Binary Be Stars with Degenerate Companions in the Galaxy", Natalya Raguzova, Astrophysics and Space Science, v.281, p.641-649 (2002) . ... The Evolutionary Evidence for Be/Black Hole Binaries", Natalya V. Raguzova and Vladimir M. Lipunov, The Be Phenomenon in Early-Type Stars, IAU Colloquium 175, ASP Conference Proceedings, Vol. 214, edited by Myron A. Smith and Huib F. Henrichs. ... 1998 ...

... STScI-PRC96-25 HUBBLE'S 100,000TH EXPOSURE CAPTURES IMAGE OF DISTANT QUASAR The Hubble Space Telescope achieved its 100,000th exposure June 22 with a snapshot of a quasar that is about 9 billion light-years from Earth. ... The fainter object just above it is an elliptical galaxy. ... The quasar and star are separated by billions of light-years. ... Image files in GIF and JPEG format and captions may be accessed on Internet via anonymous ftp from ftp.stsci.edu in /pubinfo. ...

The code calculates the extinction, scattering and absorption efficiency factors for prolate or oblate homogeneous spheroids. ... We provide the code with a test input file and two output files. A run of the code with such an input should lead to the results given in the output files. ... Parameters: . ... Values of other parameters are specified in the input file homn.dat . ... Voshchinnikov N.V., Farafonov V.G. Optical properties of spheroidal particles, . ...

... V838 Mon is a member of a new class of eruptive variables which appear as a peculiar novae having late K-M type spectra in their outburst. Before its outburst, it was a wide binary system of B3V type stars. ... The B3V companion was seen in the outburst in the UV spectrum taken with HST (Rauch et al., ... In the latest spectra, the light of B3V companion was predominating in the short-wave photometric bands. ... CCD blue frames of V838 Mon before the eclipse (left) and in the eclipse (right). ...

... Bright spot spectra have been constructed by differencing the mean spectra observed at pre- and post-eclipse orbital phases. These difference spectra contain ultraviolet absorption lines and show the Balmer jump in emission. ... Model disk spectra constructed as ensembles of stellar atmospheres provide poor descriptions of the observed post-eclipse spectra, despite the fact that UX UMa's light should be dominated by the disk at this time. ... huizinga@stsci.edu . ...

... A new study using AAT ?chelle spectroscopy and HST spectrophotometry has revised this value upwards to (Woolf & Jeffery 2000). Measuring for the PVTel variables poses considerable difficulties. ... In spite of these constraints, Jeffery et al. (2000) succeeded in obtaining nearly contiguous ultraviolet photometry and radial velocities ( ) of three PVTel variables. Analysis of the UV photometry provided measures of and . ... 2000). ...

... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

... Graduated from Moscow State University in 1970 and till now in permanent staff of the Sternberg Astronomical Institute, Moscow State University. ... Member, Euro-Asian Astronomical Society . ... Jointly with Dr. V.Konnikova, I teach a course in Radio Astronomy at the Astronomy Division , Physics Department of Moscow State University . ... Astronomical Meetings . ... Net Search: MetaCrawler . ... Moscow State University . ... Rudnitskij, Georgij M. Page last updated November 25, 2015. th . ...