... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The first claim that HI could be associated with a dSph-like system was for the dIrr/dSph system Phoenix (Carignan, Demers & CУДtУ? ...

Next: The Arecibo Observatory and Up: Astronomer's Guide to the Previous: Astronomer's Guide to the . The 305-m William E. Gordon radio telescope at Arecibo is the largest single-dish radio telescope on our planet, and is available to the global scientific community for astronomical observations at wavelengths between 6 m and 3 cm (frequencies of 47 MHz to 10 GHz). ... In Section 2 of this document, we provide an introduction to the Observatory, the telescope and its instrumentation. ...

2007 Jan 08) Bright comet C/2006 P1 (McNaught) . 2005 Jan 20) Tornado near Coonabarabran . 2005 Jan 16) Major upgrade in progress . 2005 Jan 16) Near Earth Comet 162P/Siding Spring . 2004 Apr) 2004 CB identified as a comet . 2004 Apr) Systematic surveying commenced 2004 March 16 . 2004 Apr) Media Releases on commencement of survey . 2004 Jan) 'Accidental' discovery of 2003 XB22 . ... Siding Spring Survey Main Page . ... Previous News Items . ...

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...

... Up: Archives and Information Services . Previous: Search and Retrieval of the AXAF Data Archive on the Web using Java . ... Our Web interface to the HST archive (WDB) was substantially augmented during the past few months: A seamless integration of Java applets and CGI interfaces to the database now allows basic manipulation and visualization of data. ... These applets only require a common Web browser and offer very helpful features to facilitate archive data selection. ...

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 . ...

... The spectrograph SP-124 at the Nasmyth-1 focus of the 6 m telescope with UAGS camera and Photometrix CCD PM1024 ( m pixel size) was used for the observations. ... Gratings with 300 and 600 grooves/mm were used, resulting in a spectral resolution of approximately 12 and 6 ? ... A He-Ne-Ar lamp was used for wavelength calibration. ... April 6.914 . ... The reduction of the original two-dimensional CCD data included the standard steps such as bias and dark subtraction, flat-fielding, cosmic-ray removal...

SN 1999aa - A Third Supernova Discovery . Just 9 weeks after the discovery of SN 1998ey a suspect was found 1" east and 28" north from the centre of NGC 2595 on Feb.11.0166 U.T.. ... Further inspection of 6 images of NGC 2595 taken during Feb. and March 1998 showed no object at the position of the suspect. ... Beijing Astronomical Observatory recorded SN 1999aa on Feb. 11.6 and 12.6 UT, the first obervation being only 14 hours after the discovery. ... Back to Supernova 1999aa in NGC 2595 . ...

... Bojan Nikolic web pages (r. 329) . ... Using high-resolution three-dimensional realisations of turbulent fields, we investigate the limits on achievable performance of atmospheric phase correction using water-vapour radiometers arising from following effects: the incoherent measurement of power from water by the radiometers (in contrast to coherent detection of the astronomical signal); the different tapers of the response patterns of the astronomical and radiometer receivers; and, the ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

... I have always heard that everything we see is "star stuff" from previous stars that died after converting their hydrogen into heavier elements. So how is there any hydrogen left for the Sun and planets? ... Hydrogen is the main source of fuel for stars like the Sun. ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

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Peremennye Zvezdy", . ... USNO-B1.0 1413-0363790, 2MASS 20315512+5119384 . ... During our work, we have discovered a previously unknown variable star, a possible dwarf nova USNO-B1.0 1413-0363790. Our observations were carried out between May and August, 2012 with the Master-URAL system consisting of two parallel optical telescopes on the same mount (40-cm aperture, 1:2.5 focal ratio) and equipped with two Apogee Alta U16M CCD cameras (Kodak KAF16803 chip, Peltier cooled) (Lipunov et al. ...

XMM-Newton SAS V5.1 Scientific Validation and Data . ... This page contains the Scientific Validation Report for SAS V5.1 (.ps.gz) as well as the data use for this validation. ... The SAS V5.0 Scientific Validation Page can be found here . ... Data Files Handbook (Issue 2.2). ODF/SDF Interface Control Document (Issue 2.9). The following datasets have been used for the Scientific Validation of SAS V5.1. ... Pipeline Products : Each Product Group is available separately as a .TAR file. ... ODF . ...

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

. An on-axis observation has revealed that this structure is actually two point sources . We are investigating if they are physically connected, and if there is a problem with the PSF analysis we previously performed on the far off-axis image. Home | Science Goals | Survey Strategy | Publications | Images & Data | Education/Outreach | Internal Page (password access only) . Date Last Modified: 23 May 2005 . Contact: Webmaster .

... The effect is strongest in the most evolved, high-latitude supergiant V5112 Sgr=IRAS19500-1709, which has an extended structured envelope (Figs.1 and 2). In the optical spectrum of this object, the BaII ion lines are split into three components (Figs.3 and 4). ... Thus, we discovered for the first time the enrichment of the stellar envelope with heavy metals produced at the AGB stage. ... Detection of heavy-metal lines in the spectrum of the circumstellar envelope of a post-AGB star. ...

Next: Conclusion Up: No Title Previous: The Transmission Gratings . ... The potential of Chandra is illustrated in Figure which shows the official "first-light" image. ... Figure: The official CXO first light image - the supernova remnant CasA. Perhaps the neutron star - black hole connection and the utility of CXO are best illustrated by an early observation of the Crab Nebula and pulsar taken as part of the HETG calibration. ... Figure shows the zeroth-order image of the Crab Nebula. ...

... A Date Received: 2004-Jun-01 18:43:58 Mail hard copies to: Dr. Sixto Gonzalez, Director Arecibo Observatory HC 3 Box 53995 Arecibo, PR 00612 U.S.A. ARECIBO OBSERVATORY NATIONAL ASTRONOMY AND IONOSPHERE CENTER OBSERVING TIME REQUEST COVER SHEET We are indebted to our user community for their continued support of the Arecibo Observatory, Puerto Rico. ... The total time request is 70 hours of observing time. ... Yes Queue Observing Section II - Time Request The following times are in AST. ...