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Menzel 3
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This panel of composite images shows part of the unfolding drama of the last stages of the evolution of sun-like stars. Dynamic elongated clouds envelop bubbles of multimillion degree gas produced by high-velocity winds from dying stars. In these images, Chandra's X-ray data are shown in blue, wh...
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Giant and dwarf barium stars
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Title: Ruthenium and hafnium abundances in giant and dwarf barium stars Authors: D. M. Allen and G. F. Porto de Mello Aims. We present abundances for Ru and Hf, compare them to abundances of other heavy elements, and discuss the problems found in determining Ru and Hf abundances with laboratory gf-...
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LTT 560
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Title: The pre-cataclysmic variable, LTT 560 Authors: C. Tappert, B. T. Gänsicke, L. Schmidtobreick, A. Aungwerojwit, R. E. Mennickent, and D. Koester Aims. System parameters of the object LTT 560 are determined in order to clarify its nature and evolutionary status. Methods. We apply time-s...
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HR 6000
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Title: A refined analysis of the remarkable Bp star HR 6000 Authors: F. Castelli, S. Hubrig UVES spectra of the very young (~10^7 years) peculiar B-type star HR 6000 were analysed in the near-UV and visual spectral regions (3050-9460 A) with the aim to extend to other spectral ranges the study made pr...
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XZ Tauri
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Subaru Telescope Uncovers a Misaligned Jet in a Binary Star System A new image of a young (less than a million years old) binary star system called XZ Tauri, taken using the Coronagraphic Imager with Adaptive Optics (CIAO) on the Subaru Telescope, reveals for the first time a jet of material streamin...
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V 4641
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V 4641 is a visible star that is associated with a black hole. For a few days in September, 1999 the blackhole became a microquasar, sending out tremendous bursts of X-ray radiation and jets of plasma at speeds of 90 percent the speed of light. V 4641 lies just 1,600 light-years from Earth towards the ce...
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lambda Bootis stars
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Title: On the lambda Bootis spectroscopic binary hypothesis
Authors: Christian Stuetz, Ernst Paunzen
It is still a matter of debate if the group of lambda Bootis stars is homogeneously defined. A widely discussed working hypothesis formulates that two apparent solar abu...
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V390 Velorum
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VLT Interferometer detects disc around aged star A team of European astronomers has used ESO's Very Large Telescope Interferometer and its razor-sharp eyes to discover a reservoir of dust trapped in a disc that surrounds an elderly star. The discovery provides additional clues about the shaping...
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M subdwarf binaries
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Title: HST search for M subdwarf binaries Authors: Basmah Riaz, John E. Gizis, Debasmita Samaddar We present HST/ACS observations of 19 nearby M subdwarfs in a search for binary systems. Other than the wide common proper motion pair LHS 2140/2139, none of our sdM and esdM targets are found to be bina...
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PN G135.9+55.9
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Title: An object that defies stereotypes. X-ray observations of SBS 1150+599A -- the binary nucleus of PN G135.9+55.9 Authors: G.Tovmassian, J.Tomsick, R.Napiwotzki, L.Yungelson, G.Stasiska, M.Peņa, M.Richer We present X-ray observations of the close binary nucleus of the planetary nebul...
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VII. Ophiuchus Interstellar Clouds
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Title: The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds: VII. Ophiuchus Observed with MIPS Authors: Deborah L. Padgett, Luisa M. Rebull, Karl R. Stapelfeldt, Nicholas L. Chapman, Shih-Ping Lai, Lee G. Mundy, Neal J. Evans II, Timothy Y. Brooke, Lucas A. Cieza, William J. Spiesman, Al...
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EE Camelopardalis
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Title: Pulsation of EE Cam Authors: M. Breger, S. M. Rucinski, P. Reegen EE Cam is a previously little studied Delta Scuti pulsator with amplitudes between those of the HADS (High-Amplitude Delta Scuti stars) group and the average low-amplitude pulsators. Since the size of stellar rotation dete...
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FSR584
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Title: FSR584 - a new globular cluster in the Galaxy? Authors: E. Bica, C. Bonatto, S. Ortolani, B. Barbuy We investigate the nature of the recently catalogued star cluster candidate FSR584, which is projected in the direction of the molecular cloud W3 and may be the nearest globular cluster to the S...
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SWIFT J1756.9-2508
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Using NASAs Swift and Rossi X-ray Timing Explorer (RXTE) satellites, astronomers have discovered one of the most bizarre planet-mass objects ever found. The objects minimum mass is only about 7 times the mass of Jupiter. But instead of orbiting a normal star, this low-mass body orbits a rapidly sp...
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RPJ 053059-683542
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Title: The Unusual Variability of the Large Magellanic Cloud Planetary Nebula RPJ 053059-683542 Authors: Richard A. Shaw, Armin Rest, Guillermo Damke, R. Chris Smith, Warren A. Reid, Quentin A. Parker We present images and light curves of the bipolar Planetary Nebula RPJ 053059-683542 that was...
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