... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...

Next: Accretion Disks with Up: StarsStellar Populations, Previous: Spectroscopic Analysis of . ... We present and discuss spatially resolved spectra of the accretion disk and the gas stream region as a function of distance from disk center, the spectrum of the uneclipsed light, and the radial temperature distribution in the ultraviolet. Keywords: Accretion disks, Cataclysmic variables . ... In this paper we report on the HST spectral mapping of the nova-like UX UMa. ...

... Astrophysics Group . ... COAST . COAST Astronomical Results . ... Surface Imaging of Betelgeuse . ... This page highlights some astronomical results obtained with COAST over the years. These are listed in chronological order (most recent first). ... Measurements of cyclic variations in the angular diameter of Chi Cygni . ... The first infrared image from an aperture synthesis array . ... The images of Betelgeuse below were reconstructed from COAST data taken in early 2004. ...

Peremennye Zvezdy ( Variable Stars ) 33 , No. ... I present the discovery of an eclipsing component in light variations of the known High-Amplitude Delta Scuti star GSC 1374-01131 based on the Catalina Surveys publicly available data. ... From a single night of their observations, the variable was classified as a HADS (High-Amplitude Delta Scuti) star, with the light elements: . ... The light curves of GSC 1374-01131 based on Catalina data, folded with periods of pulsations and eclipses. ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

B?rbel Koribalski (ATNF) + HIPASS and ZOA teams . ... The latest statistical results of optical/HI properties for sources in the HIPASS Bright Galaxy Catalog . ... Optical data for 850 HIPASS BGC galaxies were retrieved from LEDA. ... New Galaxies . ... 2000, . ... Histogram of galaxy inclinations. ... Log M HI versus 50% velocity width, w 50 i , corrected for galaxy inclination. ... As the galaxy lies in the Zone-of-Avoidance the inclination is difficult to estimate and probably wrong in this case. ...

A LINK BETWEEN VARIABLE OPTICAL CONTINUUM AND RADIO EMISSION OF A COMPACT JET IN THE RADIOнLOUD SEYFERT GALAXY 3C390.3 T.G. Arshakian 1 , A.P. Lobanov 1 , V.H. Chavushyan 2 , A.I. Shapovalova 3 , J.A. Zensus 1 , N.G. Bochkarev 4 , A.N. Burenkov 3 1 MaxнPlanckнInstitut fur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany, 2 Instituto Nacional de AstrofТРsica, Optica y ElectrТonica, Apartado Postal 51. ... We combine results from the monitoring of 3C390.3 in the optical region (Shapovalova et al. ...

... CEPHEID VARIABLE STARS: A Cepheid variable or Cepheid is a member of a particular class of very luminous, massive variable stars with pulsation periods of 1-70 days. ... The relationship is calibrated using data collected from Cepheids whose distances are determined by other means. ... Browse through the 68 CCD fits images he sent you, using ds9 and locate the Cepheid variable. ... Image credits: ESA - "http://sci.esa.int/science-e-media/img/20/cepheid-variables.jpg" . ...

The SCUBA Local Universe Galaxy Survey Dust along the Hubble sequence Catherine Vlahakis University of Bonn Collaborators: Steve Eales (Cardiff University) Loretta Dunne (University of Nottingham) Overview What is SLUGS? Results from the survey Recent work using SLUGS results ­ the FIR-radio relation Introduction: SLUGS SLUGS ­ a submm survey of galaxies in the local Universe ­ at 850m and 450m Survey of ~200 nearby galaxies: 104 60m-selected ("IRS") (Dunne et al. ...

... 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. ...