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GX 349+2
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Title: A ionised reflecting skin above the accretion disk of GX 349+2 Authors: R. Iaria, A. D'Aí, T. Di Salvo, N. R. Robba (Univ. Palermo), A. Riggio, A. Papitto, L. Burderi (Univ. Cagliari) The broad emission features in the Fe-Kalpha region of X-ray binary spectra represent an invaluable probe to...
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Extremely Metal-Deficient Stars
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Title: Beryllium, Oxygen and Iron Abundances in Extremely Metal-Deficient Stars Authors: Jeffrey A. Rich, Ann Merchant Boesgaard The abundance of beryllium in the oldest, most metal-poor stars acts as a probe of early star formation and Galactic chemical evolution. We have analysed high-reso...
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PSR J1747-2809
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Title: Discovery of the energetic pulsar J1747-2809 in the supernova remnant G0.9+0.1 Authors: F. Camilo (Columbia U.), S. M. Ransom (NRAO), B. M. Gaensler (U. Sydney), D. R. Lorimer (WVU) The supernova remnant G0.9+0.1 has long been inferred to contain a central energetic pulsar. In observatio...
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sdBV Star JL 166
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Title: Detection of Photometric Variations in the sdBV Star JL 166 Authors: B.N Barlow, B.H. Dunlap, A.E. Lynas-Gray, J.C. Clemens We report the discovery of oscillations in the hot subdwarf B star JL 166 from time-series photometry using the Goodman Spectrograph on the 4.1-m Southern Astrophys...
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HD 50844
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Title: HD 50844: the new look of Delta Sct stars from CoRoT space photometry Authors: E. Poretti (INAF-OA Brera), E. Michel (LESIA, Meudon), R. Garrido (IAA, Granada), L. Lefevre (LESIA), L. Mantegazza (INAF-OA Brera), M. Rainer (INAF-OA Brera), E. Rodriguez (IAA), K. Uytterhoeven (INAF-OA Bre...
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Rapidly Rotating Stars
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Title: Imaging and Modelling Rapidly Rotating Stars: Alpha Cephei and Alpha Ophiuchi Authors: M. Zhao (1), J. D. Monnier (1), E. Pedretti (2), N. Thureau (2), A. Merand (3,4), T. ten Brummelaar (3), H. McAlister (3), S. T. Ridgway (5), N. Turner (3), J. Sturmann (3), L. Sturmann (3), C. Farrington (3...
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OGLE-2009-BLG-076S
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Title: OGLE-2009-BLG-076S - The most metal-poor dwarf star in the Galactic bulge Authors: T. Bensby (1), S. Feltzing (2), J.A. Johnson (3), A. Gal-Yam (4), A. Udalski (5) A. Gould (3), C. Han (6), D. Adén (2), J. Simmerer (2) ((1) European Southern Observatory, Chile, (2) Lund Observatory, Sweden,...
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Ultracool subdwarf
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Astronomers announced today that stars of a recently discovered type, dubbed ultracool subdwarfs, take some pretty wild rides as they orbit around the Milky Way, following paths that are very different from those of typical stars. One of them may actually be a visitor that originated in another ga...
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Aquila Rift Gas Cloud
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Cosmic Cloud Poised to Birth Massive Star A massive, tranquil object found lurking in a dark cloud in our galaxy could be about to transform into a massive star or stars, giving astronomers their first glimpse at such a region on the cusp of stellar birth. The cloud, located near the Aquila rift in the g...
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X-ray pulsar SAX J0635+0533
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Title: A low luminosity state in the massive X-ray binary SAX J0635+0533 Authors: Sandro Mereghetti, Nicola La Palombara (INAF-IASF Milano) The X-ray pulsar SAX J0635+0533 was repeatedly observed with the XMM-Newton satellite in 2003-2004. The precise localisation provided by these observa...
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TWA22
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Title: The young, tight and low mass binary TWA22AB: a new calibrator for evolutionary models ? Orbit, spectral types and temperatures determination Authors: M. Bonnefoy, G. Chauvin, C. Dumas, A-M. Lagrange, H. Beust, M. Desort, R. Texeira, C. Ducourant, J-L. Beuzit, I. Song Tight binaries disc...
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Barnard 68
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Astronomers Predict Birth of a New Star A pair of astrophysicists has predicted the birth of a star, by saying that "the inevitable future of the starless cloud Barnard 68" is to collapse and give rise to a new star. The astrophysicists are Joao Alves, director of the Calar Alto Observator...
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NGC 3918
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NGC 3918 is a bright planetary nebula in the constellation Centaurus, that is called the "Blue Planetary" or "The Southerner". It is the brightest of the far southern planetary nebula NGC 3918 was discovered by Sir John Herschel in March 1834, and in easily visible in a small t...
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HIP 14810
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Title: A Third Planet Orbiting HIP 14810 Authors: Jason T. Wright, Debra A. Fischer, Eric B. Ford, Dimitri Veras, Ji Wang, Gregory W. Henry, Geoff W. Marcy, Andrew W. Howard, John Asher Johnson We present new precision radial velocities and a three-planet Keplerian orbit fit for the V = 8.5, G5 V star...
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W51A
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Title: Triggered Star Formation in a Double Shell near W51A Authors: Miju Kang, John H. Bieging, Craig A. Kulesa, Youngung Lee We present Heinrich Hertz Telescope CO observations of the shell structure near the active star-forming complex W51A to investigate the process of star formation trigge...
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