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Abell 58
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Title: The hydrogen-deficient knot of the 'born again' planetary nebula Abell 58 (V605 Aql) Authors: R. Wesson, M.J. Barlow, X-W. Liu, P.J. Storey, B. Ercolano, O. De Marco We have analysed deep optical spectra of the 'born-again' planetary nebula Abell 58 and its hydrogen-deficient knot, surro...
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Giant red dying stars
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Giant red dying stars may warm previously frozen worlds around them to the point where liquid water temperature exists long enough for life to form, according to a new analysis of the evolution of habitable zones around stars. ...
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Asymptotic giant branch (AGB) variables
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Title: AGB Variables and the Mira Period-Luminosity Relation Authors: Patricia A. Whitelock, Michael W. Feast, Floor van Leeuwen Published data for large amplitude asymptotic giant branch variables in the Large Magellanic Cloud are re-analysed to establish the constants for an infrared (K) p...
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SS Cygni
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Title: The dwarf nova SS Cygni: what is wrong? Authors: Matthias R. Schreiber, Jean-Pierre Lasota Since using the Fine Guiding Sensor (FGS) on the Hubble Space Telescope (HST) the distance to SS Cyg has been measured to be 166 ±12 pc, it became apparent that at this distance the disc instability mod...
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White Dwarfs
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Title: A Catalogue of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
Authors: Daniel J. Eisenstein, James Liebert, Hugh C. Harris, S.J. Kleinmann, Atsuko Nitta, Nicole Silvestri, Scott A. Anderson, J.C. Barentine, Howard J. Brewin...
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Cepheus A
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Title: The Chandra X-ray view of the power sources in Cepheus A Authors: P. C. Schneider, H. M. Guenther, J. H. M. M. Schmitt The central part of the massive star-forming region Cepheus A contains several radio sources which indicate multiple outflow phenomena, yet the driving sources of the indivi...
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IGR J16283-4838
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An international team of scientists has uncovered a rare type of neutron star so elusive that it took three satellites to identify it.
The findings, made with ESA`s Integral satellite and two NASA satellites, reveals new insights about star birth and death in our Galaxy. Researchers reported...
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CoRoT-Exo-1b
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Title: Transiting exoplanets from the CoRoT space mission I - CoRoT-Exo-1b: a low-density short-period planet around a G0V star Authors: P. Barge, A. Baglin, M. Auvergne, H. Rauer, A. Leger, J. Schneider, F. Pont, S. Aigrain, J.-M. Almenara, R. Alonso, M. Barbieri, P. Borde, F. Bouchy, H.-J. Deeg...
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HDE 269928
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Title: A first orbital solution for the very massive 30 Dor main-sequence WN6h+O binary R145 Authors: O. Schnurr, A.F.J. Moffat, A. Villar-Sbaffi, N. St-Louis, N.I. Morrell We report the results of a spectroscopic and polarimetric study of the massive, hydrogen-rich WN6h stars R144 (HD 38282 = B...
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BG Geminorum
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BG Geminorum is long period binary star system which contains a K0 I secondary star in orbit around a primary star. The components are separated by 6 arcseconds. The primary star has a mass at least 3.5 times that of the sun and could either be a B star or a black hole. Material from the K0 supergiant is tr...
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Puppis A
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This Chandra Xray telescope three-colour image of a region of the supernova remnant Puppis A (wide-angle view from ROSAT in blue) reveals a cloud being torn apart by a shock wave produced in a supernova explosion.
This is the first X-ray identification of such a process in an advanced phas...
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Exoplanet host stars
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Title: Rotation periods of exoplanet host stars Authors: Elaine Simpson (1,2,3), Sallie Baliunas (1), Greg Henry (4), Chris Watson (3) ((1) Harvard-Smithsonian Centre for Astrophysics, (2) University of Southampton, (3) Queen's University Belfast, (4) Tennessee State University) The stel...
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G348.5+0.1
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Title: Suzaku observation of Galactic supernova remnant CTB 37A (G348.5+0.1) Authors: A. Sezer, F. Gök, M. Hudaverdi, E.N. Ercan We present here the results of the observation of CTB 37A obtained with the X-ray Imaging Spectrometer onboard the Suzaku satellite. The X-ray spectrum of CTB 37A is we...
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SNR 0519-69.0
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Title: The Progenitor of the Type Ia Supernova that created SNR 0519-69.0 in the Large Magellanic Cloud Authors: Zachary I. Edwards, Ashley Pagnotta, Bradley E. Schaefer Models for the progenitor systems of Type Ia supernovae can be divided into double-degenerate systems, which contain two whi...
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G292.0+1.8
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A spectacular new image shows how complex a stars afterlife can be. By studying the details of this image made from a long observation by NASAs Chandra X-ray Observatory, astronomers can better understand how some stars die and disperse elements like oxygen into the next generation of stars and pla...
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