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Burst-only X-ray binary sources
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Title: Linking burst-only X-ray binary sources to faint X-ray transients Authors: S. Campana (Osservatorio astronomico di Brera) Burst-only sources are X-ray sources showing up only during short bursts but with no persistent emission (at least with the monitoring instrument which led to thei...
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2MASS J17112318-2724315
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Title: 2MASS J17112318-2724315: A Deeply-Embedded Low-Mass Protostellar System in the B59 Molecular Cloud Authors: B. Riaz, E.L. Martin, H. Bouy, R. Tata We present near-infrared observations of the low-mass deeply-embedded Class 0/I system 2MASS J17112318-2724315 (2M171123) in the B59 mo...
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X-ray binary stars
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MSU researchers have made precise mass measurements of four such nuclei, 68-selenium, 70-selenium, 71-bromine and an excited state of 70-bromine. The results may make it easier to understand X-ray bursts, the most common stellar explosions in the galaxy. No one likes to say exactly how much they...
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CXOPS J180354.3-300005
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Title: Chandra Discovery of an Intermediate Polar in Baade's Window Authors: JaeSub Hong (CfA), Maureen van den Berg (CfA), Silas Lay**** (Gemini), Jonathan E. Grindlay (CfA), Ping Zhao (CfA) We have discovered an intermediate polar (IP) in the 100 ks Chandra observation of Baade's Window (BW),...
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VSX J074727.6+065050
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Title: VSX J074727.6+065050: a new WZ Sagittae star in Canis minor Authors: Jeremy Shears, Steve Brady, Greg Bolt, Tut Campbell, Donald F. Collins, Lewis M. Cook, Timothy R. Crawford, Robert Koff, Tom Krajci, Jennie McCormick, Peter Nelson, Joseph Patterson, Pierre de Ponthiere, Mike Potter, R...
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SDSS J234723.64+010833.4
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Title: A Unique Star in the Outer Halo of the Milky Way Authors: David K. Lai, Constance M. Rockosi, Michael Bolte, Jennifer A. Johnson, Timothy C. Beers, Young Sun Lee, Carlos Allende Prieto, Brian Yanny As part of a program to measure abundance ratios in stars beyond 15 kpc from the Galactic center,...
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PSR B1821-24
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Title: The micro-glitch in PSR B1821-24 : A case for the strange pulsar? Authors: Raka Dona Ray Mandal, Sushan Konar, Mira Dey, Jishnu Dey The single glitch observed in PSR B1821-24, a millisecond pulsar in M28, is unusual on two counts. First, the magnitude of this glitch is at least an order of magni...
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Sgr B Molecular Clouds
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Title: An X-Ray Face-on View of the Sgr B Molecular Clouds Observed with Suzaku Authors: Syukyo G. Ryu, Katsuji Koyama, Masayoshi Nobukawa, Ryosuke Fukuoka, Takeshi Go Tsuru We present a new methodology to derive the positions of the Sgr B molecular clouds (MCs) along the line of sight, as an applic...
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Star-forming regions
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Title: The origin of large peculiar motions of star-forming regions and spiral structures of our Galaxy Authors: Junichi Baba, Yoshiharu Asaki, Junichiro Makino, Makoto Miyoshi, Takayuki R. Saitoh, Keiichi Wada Recent VLBI (Very Long Baseline Interferometer) observations (Xu et al. 2006; Sa...
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ASAS J150946-2147.7
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VARIABLE STAR IN LIBRA G. Pojmanski, D. Szczygiel, and B. Pilecki, (Warsaw University Astronomical Observatory) have reported a new optical outburst of ASAS 150946-2147.7 (2MASS J15094657-2147462) on the 6th April, 2009. ASAS J150946-2147.7 was first discovered in July 2003 in the constella...
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RAT J1953+1859
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Title: RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence Authors: Gavin Ramsay, Pasi Hakala, Thomas Barclay, Peter Wheatley, George Marshall, Harry Lehto, Ralf Napiwotzki, Gijs Nelemans, Stephen Potter and Ian Todd We report the discovery of an accreting binar...
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Sharpless 308
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Spectacular cosmic bubble '60 light years wide and 70,000 years old' This spectacular cosmic bubble was caused by a gas expulsion from a dying star and is 60 light years across and 70,000 years old. At its centre is a star, known as a Wolf-Rayet star which is 20 times the mass of the sun. When it dies it thr...
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2M171123
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A team of astronomers from the Instituto Astrofisica Canarias (IAC) have found an interesting shadow cast by a forming star system. Team member Dr Basmah Riaz, an ER fellow for the Marie Curie CONSTELLATION network, will present the results of their work on Thursday 23rd April in a poster at the Euro...
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Helium-core white dwarfs
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Twenty-four unusual stars, 18 of them newly discovered, have been observed in new Hubble telescope images. The stars are white dwarfs, a common type of dead star, but they are odd because they are made of helium rather than the usual carbon and oxygen. This is the first extensive sequence of helium-c...
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Iota Cancri
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While its name sounds like a disease you'd catch after a weekend of incautious living, iota Cancri (pronounced "eye-OH-tah KAN-kree") is actually a pretty double star in the northern part of the constellation Cancer, the Crab. This pair is easy to separate and striking in a small telesc...
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