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SDSS J153636.22+044127.0
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Title: HST Images and KPNO Spectroscopy of the Binary Black Hole Candidate SDSS J153636.22+044127.0 Authors: Tod R. Lauer, Todd A. Boroson (NOAO) We present HST WFPC2/PC images and KPNO 4-m longslit spectroscopy of the QSO SDSS J153636.22+044127.0, which we advanced as a candidate binary super...
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IGRJ18483-0311
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Title: The supergiant fast X-ray transient IGRJ18483-0311 in quiescence: XMM-Newton, Swift, and Chandra observations Authors: A. Giunta, E. Bozzo, F. Bernardini, G. Israel, L. Stella, M. Falanga, S. Campana, A. Bazzano, A.J. Dean, M. Mendez IGR J18483-0311 was discovered with INTEGRAL in 200...
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Anomalous X-ray Pulsars
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Anomalous X-ray pulsars
Tiny stellar 'corpses' have been caught blasting surprisingly powerful X-rays and gamma rays across our galaxy by ESA’s gamma-ray observatory Integral.
This discovery links these objects to the most magnetically active bodies in the Universe and forces scienti...
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AR Bootis
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Title: The Period Variation of and a Spot Model for the Eclipsing Binary AR Bootis Authors: Jae Woo Lee, Jae-Hyuck Youn, Chung-Uk Lee, Seung-Lee Kim, Robert H. Koch New CCD photometric observations of the eclipsing system AR Boo were obtained from February 2006 to April 2008. The star's photometri...
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alpha Cassiopeiae
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Title: Is Shedir Variable? Authors: Samuel J. George, Ian R. Stevens, Steven A. Spreckley Before the age of modern photographic and CCD observations alpha Cassiopeiae was labelled as a variable star, though this variability has not been seen with modern instrumentation. We present an analysis o...
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HD191760b
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Title: First Results from the CHEPS: Exoplanets and the Discovery of an Eccentric Brown Dwarf in the Desert Authors: James S. Jenkins, Hugh R.A. Jones, Krzysztof Gozdziewski, Cezary Migaszewski, John R. Barnes, Matias I. Jones, Patricio Rojo, David J. Pinfield, Avril C. Day-Jones, Sergio Hoyer...
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CF Tucanae
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Title: The chromospherically--active binary CF Tuc revisited Authors: D. Dogru, A. Erdem, S. S. Dogru, S. Zola New high-resolution spectra, of the chromospherically active binary system CF Tuc, taken at the Mt. John University Observatory in 2007, were analysed using two methods: cross-corre...
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V354 Lacerta
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Title: New Spectroscopic Observations of the Post-AGB Star V354Lac=IRAS22272+5435 Authors: V.G.Klochkova, V.E.Panchuk, N.S.Tavolganskaya The strongest absorption features with the lower-level excitation potentials \chi_low <1 eV are found to be split in the high-resolution optica...
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1RXS J171824.2-402934
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Title: Monitoring campaign of 1RXS J171824.2-402934, the low-mass X-ray binary with the lowest mass accretion rate Authors: J.J.M. in 't Zand (SRON), P.G. Jonker (SRON & Cfa), C.G. Bassa (SRON & Radboud U. Nijmegen), C.B. Markwardt (UMD & NASA-GSFC), A.M. Levine (MKI) We carried ou...
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Be Star Binaries
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Title: Supernova Kicks and Misaligned Be Star Binaries Authors: Rebecca G. Martin, Christopher A. Tout, J. E. Pringle Be stars are rapidly spinning B stars surrounded by an outflowing disc of gas in Keplerian rotation. Be star/X-ray binary systems contain a Be star and a neutron star. They are foun...
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Planetary Nebula K 4-55
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The Hubble community bids farewell to the soon-to-be decommissioned Wide Field Planetary Camera 2 (WFPC2) onboard the Hubble Space Telescope. In tribute to Hubble's longest-running optical camera, planetary nebula K 4-55 has been imaged as WFPC2's final "pretty picture." [url=ht...
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New brown dwarf candidates
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Title: New brown dwarf candidates in the Pleiades Authors: T. Eisenbeiss, M. Moualla, M. Mugrauer, S. Raetz, R. Neuhäuser, T. O. B. Schmidt, Ch. Ginski, M. M. Hohle, A. Koeltzsch, C. Marka, W. Rammo, A. Reithe, T. Roell, M. Vanko (Version v2) We have performed deep, wide-field imaging on a ~0.4 deg^2...
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Orange dwarfs
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The universe's best real estate for life may be around stars a little less massive than the sun, called orange dwarfs, according to a new analysis. These stars live much longer than sun-like stars, and have safer habitable zones - where liquid water can exist - than those of lighter red dwarf stars. St...
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SAX J1818.6-1703
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The Swift satellite observed a new outburst from SAX J1818.6-1703 a Supergiant Fast X-ray Transient on the 6th May, 2009, at 14:02:11 UT. SAX J1818.6-1703 was first discovered in 1998 by the BeppoSAX satellite. Position: RA= 274.663 degs ; Dec= -17.0520 degs [url=http://swift.gsfc.nasa.gov/d...
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LMC X-2
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Title: X-ray spectral evolution of the extragalactic Z-source, LMC X-2 Authors: V.K. Agrawal, R. Misra We present the results obtained by a detailed study of the extragalactic Z source, LMC X-2, using broad band Suzaku data and a large (~750 ksec) data set obtained with the proportional counter ar...
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