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V542 Cygni
(Preview)
The dwarf nova V542 Cygni is reported be in outburst Date: 4th March, 2011 Magnitude range: 13.0 - 18.3 Period: ? Satellite period: 0.1815 days Type: UGSS Position(2000): RA=19 49 10.48, Dec=+58 31 59.4
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HDE 344787
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Title: HDE 344787, the Polaris Analogue that is Even More Interesting than Polaris Authors: David G. Turner, Daniel J. Majaess, David J. Lane, J. R. Percy, D. English, Richard Huziak A collection of active photometric observations over the last half decade, archival data from the past 120 years, r...
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66 Eridani
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Title: Chemical spots in the absence of magnetic field in the binary HgMn star 66 Eridani Authors: V. Makaganiuk, O. Kochukhov, N. Piskunov, S. V. Jeffers, C. M. Johns-Krull, C. U. Keller, M. Rodenhuis, F. Snik, H. C. Stempels, J. A. Valenti According to our current understanding, a subclass of the u...
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DX Andromedae
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The long-period dwarf nova DX Andromedae is in outburst. Date: 22nd February, 2011 Magnitude range: 11.0 - 15.5 V Period: Unknown Satellite period: 0.440502 days Type: UGSS Position(2000): RA=23 29 46.68, Dec=+43°45'04.1"
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PSR J1820+0159
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Hannah Mabry discovered J1820+0159 in January Rowan County High School junior Hannah Mabry is the first student in Kentucky to discover a pulsar. She is part of a nationwide project that has high school students analysing data from the National Radio Astronomy Observatory in Green Bank, West Virg...
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MN Draco
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Title: MN Dra - In-the-Gap Dwarf Nova With Negative Superhumps Authors: Elena Pavlenko, Taichi Kato, Max Andreev, Alexandr Sklyanov, Alexandra Zubareva, Denis Samsonov, Irina Voloshina, Vladimir Metlov, Sergey Shugarov, Nikolay Parakhin, Alex Golovin, Oksana Antoniuk The multi-site phot...
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ES Ceti
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Title: The photometric period in ES Ceti Authors: C.M. Copperwheat, T.R. Marsh, V.S. Dhillon, S.P. Littlefair, P.A. Woudt, B. Warner, J. Patterson, D. Steeghs, J. Kemp, E. Armstrong, R. Rea (Version v2) We present ULTRACAM photometry of ES Cet, an ultracompact binary with a 620s orbital period. T...
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V446 Herculis
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Title: The Dwarf Nova Outbursts of Nova Her 1960 (=V446 Her) Authors: R.K. Honeycutt, J.W. Robertson, S. Kafka V446 Her is the best example of an old nova which has developed dwarf nova eruptions in the post-nova state. We report on observed properties of the long-term light curve of V446 Her, using p...
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Planetary Nebula A43
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Title: UV Spectroscopy of the Central Star of the Planetary Nebula A43 Authors: Ellen Ringat, Felix Friederich, Thomas Rauch, Klaus Werner, Jeffrey W. Kruk About 25% of all post-AGB stars are hydrogen-deficient, e.g. the PG1159 stars with a typical abundance pattern He:C:O = 33:50:17 (by mass)....
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CoRoT 101155310
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Title: Monitoring a high--amplitude Delta Sct star for 152 days: discovery of 12 additional modes and modulation effects in the light curve of CoRoT 101155310 Authors: Ennio Poretti, Monica Rainer, Werner W. Weiss, Zsofia Bognar, Andy Moya, Ewa Niemczura, Juan Carlos Suarez, Michel Auvergne, A...
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HD 62623
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Première image 3D de l'environnement proche d'une étoile supergéante chaude Comment expliquer que l'étoile supergéante chaude en fin de vie HD 62623 soit entourée d'un disque généralement associé à des étoiles en formation ? Une équipe internationale, menée par Florentin Millour du laboratoi...
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HIP 78530
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Title: Discovery of a ~23 Mjup Brown Dwarf Orbiting ~700 AU from the Massive Star HIP 78530 in Upper ScorpiusAuthors: David Lafrenière, Ray Jayawardhana, Markus Janson, Christiane Helling, Soeren Witte, Peter Hauschildt We present the discovery of a substellar companion on a wide orbit around t...
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KV Draconis
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KV Draconis is in outburst. Date: 22nd January, 2011. Magnitude range: 11.8 - 17.1 V Period: ? Satelite period: 0.05876 days Type: UGSU Position(2000): : RA=14 50 38.31, Dec=+64°03'28.6"
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HD 51756
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Title: CoRoT high-precision photometry of the B0.5 IV star HD 51756 Authors: P. I. Pápics, M. Briquet, M. Auvergne, C. Aerts, P. Degroote, E. Niemczura, M. Vu\vckovi, K. Smolders, E. Poretti, M. Rainer, M. Hareter, A. Baglin, F. Baudin, C. Catala, E. Michel, R. Samadi OB stars are important constit...
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CD-35 2722
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Title: The Gemini NICI Planet-Finding Campaign : Discovery of a Substellar L Dwarf Companion to the Nearby Young M Dwarf CD-35 2722 Authors: Zahed Wahhaj, Michael C. Liu, Beth A. Biller, Fraser Clarke, Eric L. Nielsen, Laird M. Close, Thomas L. Hayward, Eric E. Mamajek, Michael Cushing, Trent Dupu...
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