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Convection in planets and stars
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A new study by UCLA planetary scientists and their colleagues in Germany overturns a longstanding scientific tenet and provides new insights into how convection controls much of what we observe in planets and stars. The research, federally funded by the National Science Foundation, unifies res...
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γ˛ Velorum
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Title: Direct constraint on the distance of γ˛ Velorum from AMBER/VLTI observations
Authors: F. Millour, et al
In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system γ˛ Velorum. The AMBER instrument was used with...
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G182.4+4.3
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Title: The first optical light from the supernova remnant G182.4+4.3 located in the Galactic anti-centre region Authors: A. Sezer, F. Gok, E. Aktekin We report the discovery of optical filamentary and diffuse emission from G182.4+4.3 using 1.5-m Russian-Turkish telescope. We present the opti...
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Ancient LMC Supernovae
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1 2 3 4
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A team of astronomers has found faint visible echoes of three ancient supernovae by detecting their centuries-old light as it is reflected by clouds of interstellar gas hundreds of light-years removed from the original explosions.
Located in the nearby [url=http://www.geocities.com/am...
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G296.7-0.9
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Title: The Supernova Remnant G296.7-0.9 in X-rays Authors: Tobias Prinz, Werner Becker Aims: We present a detailed study of the supernova remnant (SNR) G296.7-0.9 in the 0.2-12 keV X-ray band. <br>Methods: Using data from XMM-Newton we performed a spectro-imaging analysis of G296.7-0....
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Supernova remnant Kes 75
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Title: Magnetar-like Emission from the Young Pulsar in Kes 75 Authors: F. P. Gavriil, M. E. Gonzalez, E. V. Gotthelf, V. M. Kaspi, M. A. Livingstone, P. M. Woods We report detection of magnetar-like X-ray bursts from the young pulsar PSR J1846-0258, at the centre of the supernova remnant Kes 75. This...
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Dark Matter Halo
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Title: An Off-center Density Peak in the Milky Way's Dark Matter Halo? Authors: Michael Kuhlen, Javiera Guedes, Annalisa Pillepich, Piero Madau, Lucio Mayer We show that the position of the central dark matter density peak may be expected to differ from the dynamical center of the Galaxy by severa...
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Massive Molecular Filament
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Title: An 80 pc Long Massive Molecular Filament in the Galactic Mid-Plane Authors: Cara Battersby, John Bally The ubiquity of filaments in star forming regions on a range of scales is clear, yet their role in the star formation process remains in question. We suggest that there are distinct classes...
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Barnard 59
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Title: High Resolution Near-Infrared Survey of the Pipe Nebula I: A Deep Infrared Extinction Map of Barnard 59 Authors: Carlos G. Román-Zúńiga, Charles J. Lada, Joăo F. Alves We present our analysis of a fully sampled, high resolution dust extinction map of the Barnard 59 complex in the Pipe Nebula...
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Barnard's Star
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Barnard's Star, the second nearest star system to the Sun, spewed a large flare that increased its brightness, say astronomers in the United States. The discovery is a surprise: the star should be sedate, bec...
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Herbig-Haro 30
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Title: The Photometric Variability of HH 30 Authors: Alan M. Watson, María Carolina Durán-Rojas, Karl R. Stapelfeldt HH 30 is an edge-on disk around a young stellar object. Previous imaging with the Hubble Space Telescope has show morphological variability that is possibly related to the rotati...
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NGC 7538 IRS1
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Title: Investigating the Nature of the Dust Emission around Massive Protostar
NGC 7538 IRS 1: Circumstellar Disk and Outflow?
Authors: James M. De Buizer- Gemini Observatory, and Vincent Minier - DAPNIA/DSM/CEA Centre d'Etudes de Saclay.
Researchers have obtained hi...
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Binary Stars
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Title: Orbits Of Five Visual Binary Stars Authors: Bojan Novakovic We presented here the orbital parameters for five visual binary stars calculated by using the new method which we named Sector Grid Search. Orbital parameters were obtained for the following stars: WDS 00152+2722 = ADS 195, WDS 02...
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SGR 1627-41
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Title: The 2008 May burst activation of SGR 1627-41 Authors: P. Esposito, G. L. Israel, S. Zane, F. Senziani, R. L. C. Starling, N. Rea, D. M. Palmer, N. Gehrels, A. Tiengo, A. De Luca, D. Götz, S. Mereghetti, P. Romano, T. Sakamoto, S. D. Barthelmy, L. Stella, R. Turolla, M. Feroci, V. Mangano In May 200...
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Stellar companions
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Title: The Palomar/Keck Adaptive Optics Survey of Young Solar Analogues: Evidence for a Universal Companion Mass Function Authors: Stanimir Metchev, Lynne Hillenbrand We present results from an adaptive optics survey for substellar and stellar companions to Sun-like stars. The survey targe...
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