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Sh2-284
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'Elephant Trunks' in Space NASA's Wide-field Infrared Survey Explorer, or WISE, captured this image of a star-forming cloud of dust and gas, called Sh2-284, located in the constellation of Monoceros. Lining up along the edges of a cosmic hole are several "elephant trunks" -- or monstr...
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GJ436b
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Title: Methane in the atmosphere of the transiting hot Neptune GJ436b? Authors: J.-P. Beaulieu, G. Tinetti, D. M. Kipping, I. Ribas, R. J. Barber, J. Y-K. Cho, I. Polichtchouk, J. Tennyson, S. N. Yurchenko, C. A. Griffith, V. Batista, I. Waldmann, S. Miller, S. Carey, O. Mousis, S. J. Fossey, A. Aylw...
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HD 61005
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What superficially resembles a giant moth floating in space is giving astronomers new insight into the formation and evolution of planetary systems. This is not your typical flying insect. It has a wingspan of about 22 billion miles. The wing- like structure is actually a dust disk encircling the n...
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Cepheid Envelopes
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Using ESO's Very Large Telescope Interferometer (VLTI) at Cerro Paranal, Chile, and the CHARA Interferometer at Mount Wilson, California, a team of French and North American astronomers has discovered envelopes around three Cepheids, including the [url=http://www.activeboard.com/forum...
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Eclipsing Binary FS Aur-79
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Title: Late-Type Near-Contact Eclipsing Binary [HH97] FS Aur-79 Authors: S. J. Austin, J. W. Robertson, C. Tycner, T. Campbell, R. K. Honeycutt The secondary photometric standard star #79 for the FS Aur field (Henden & Honeycutt 1997) designated as [HH97] FS Aur-79 (GSC 1874 399) is a short pe...
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HD 149382
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Title: Discovery of a close substellar companion to the hot subdwarf star HD 149382 - The decisive influence of substellar objects on late stellar evolution Authors: S. Geier, H. Edelmann, U. Heber, L. Morales-Rueda Substellar objects, like planets and brown dwarfs orbiting stars, are by-produ...
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PHR1315-6555
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Title: PHR1315-6555: a bipolar planetary nebula in the compact Hyades-age open cluster ESO96-SC04 Authors: Quentin A. Parker, David J. Frew, Brent Miszalski, Anna V. Kovacevic, Peter M. Frinchaboy, Paul D. Dobbie, Joachim Koppen We present a detailed study of a bipolar, possible Type I planeta...
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OGLE-2009-BLG-020
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Title: Binary microlensing event OGLE-2009-BLG-020 gives a verifiable mass, distance and orbit predictions Authors: J. Skowron, A. Udalski, A. Gould, Subo Dong, L. A. G. Monard, C. Han, C. R. Nelson, J. McCormick, D. Moorhouse, G. Thornley, A. Maury, D. M. Bramich, J. Greenhill, S. Kozlowski, I....
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OB Association
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Title: A Candidate for the Most Luminous OB Association in the Galaxy Authors: Mubdi Rahman, Christopher Matzner, Dae-Sik Moon The Milky Way harbours giant H II regions which may be powered by star complexes more luminous than any Galactic OB association known. Being across the disk of the Galaxy,...
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Galaxy X
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Sukanya Chakrabarti has high hopes for finding what might be called Galaxy X - a dwarf galaxy that she predicts orbits our Milky Way Galaxy. Many large galaxies, such as the Milky Way, are thought to have lots of satellite galaxies too dim to see. They are dominated by "dark matter," which a...
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Young Stellar Clusters
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Title: A Spitzer Survey of Young Stellar Clusters within One Kiloparsec of the Sun: Cluster Core Extraction and Basic Structural Analysis Authors: R. A. Gutermuth, S. T. Megeath, P. C. Myers, L. E. Allen, J. L. Pipher, G. G. Fazio We present a uniform mid-infrared imaging and photometric survey of 3...
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Collision of Powerful Stellar Winds:
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Astronomers using the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope have tracked the motion of a violent region where the powerful winds of two giant Wolf-Rayet stars slam into each other.
The collision regio...
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Nessie Nebula
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Title: The "Nessie" Nebula: Cluster Formation in a Filamentary Infrared Dark Cloud Authors: James M. Jackson, Susanna C. Finn, Edward T. Chambers, Jill M. Rathborne, Robert Simon The "Nessie" Nebula is a filamentary infrared dark cloud (IRDC) with a large aspect ratio of o...
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PG1159 Central Stars
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Title: [WC] and PG1159 Central Stars of Planetary Nebula: the Need for an Alternative to the Born-Again Scenario Authors: Orsola De Marco Hydrogen-deficient central stars of planetary nebula such as Wolf-Rayet and PG1159 central stars and some weak emission line stars are primarily composed of...
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tau Scorpii
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An international team of astronomers has discovered that the naked-eye star, tau Scorpii, unexpectedly hosts a complex network of magnetic field lines over its surface.
Our Sun has its explosive flares and spots and high speed wind, but it is a placid star compared to some. Stars that are much m...
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