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High mass X-ray binary 4U 2206+54
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Title: Evidence for a magnetic neutron star in high mass X-ray binary 4U 2206+54 with INTEGRAL/IBIS observations Authors: W. Wang The hard X-ray source 4U 2206+54 is a peculiar high mass X-ray binary with a main-sequence donor star. Recent X-ray observations suggested that the compact object in 4...
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SBW1
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Title: The Ring Nebula Around the Blue Supergiant SBW1: Pre-Explosion Snapshot of a SN 1987A Twin Authors: Nathan Smith, W. David Arnett, John Bally, Adam Ginsburg, Alexei V. Filippenko SBW1 is a B supergiant surrounded by a ring nebula that is a nearby twin of SN 1987A. We present images and spectra...
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Open Clusters
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Title: The orbits of open clusters in the Galaxy Authors: Zhen-Yu Wu, Xu Zhou, Jun Ma, Cui-Hua Du We present and analyse kinematics and orbits for a sample of 488 open clusters in the Galaxy. The velocity ellipsoid for our present sample is derived as (\sigma_{U}, \sigma_{V}, \sigma_{W})=(28.7, 15...
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Abell 30
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Title: Rebirth of X-ray Emission from the Born-Again Planetary Nebula A 30 Authors: M. A. Guerrero, N. Ruiz, W.-R. Hamann, Y.-H. Chu, H. Todt, D. Schoenberner, L. Oskinova, R. A. Gruendl, M. Steffen, W. P. Blair, J. A. Toala The planetary nebula (PN) A 30 is believed to have undergone a very late therm...
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Supernova Remnant W44
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Title: Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT Authors: A.A. Abdo et al. (Fermi LAT Collaboration) Recent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to ~1015 eV. However, the nature of the particl...
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NGC 457
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Title: Variable stars in NGC 457 Authors: D. Modzierski, A. Pigulski, G. Kopacki, M. Stlicki, Z. Koaczkowski We present preliminary results of the photometric variability search in the field of view of the young open cluster NGC 457. We find over 60 variable stars in the field, including 25 pulsati...
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NGC 4649
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Title: The Globular Cluster System of M60 (NGC 4649). II. Kinematics of the Globular Cluster System Authors: Ho Seong Hwang (1), Myung Gyoon Lee (1), Hong Soo Park (1), Sang Chul Kim (2), Jang-Hyun Park (2), Young-Jong Sohn (3), Sang-Gak Lee (1), Soo-Chang Rey (4), Young-Wook Lee (3), Ho-Il Kim (2) (...
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NGC 2023
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Title: A comprehensive study of NGC 2023 with XMM-Newton and Spitzer Authors: M. A. López-García, J. López-Santiago, J. F. Albacete-Colombo, P. G. Pérez-González, E. de Castro Nearby star-forming regions are ideal laboratories to study high-energy emission of different stellar populations...
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L1641W
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A newly identified separate star cluster in front of the Orion Nebula Cluster Using images from the 340 Mpx MegaCam camera on the Canada-France-Hawaii Telescope (CFHT) from the summit of Mauna Kea, astronomers identified the massive cluster of young stars NGC 1980 to be a clearly separate entity f...
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Hot Molecular Core G31.41+0.31
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Title: A Double-Jet System in the G31.41+0.31 Hot Molecular Core Authors: Luca Moscadelli, Jing Jing Li, Riccardo Cesaroni, Alberto Sanna, Ye Xu, Qizhou Zhang This work presents a detailed study of the gas kinematics towards the "Hot Molecular Core" (HMC) G31.41+0.31 via multi-epoc...
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Rotating RAdio Transients
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The `radio sky' is relatively unexplored for transient signals, as demonstrated recently by the discovery of a previously unknown type of source which varies on timescales of minutes to hours.
An international team has announced that a huge number of neutron stars, ultra dense stell...
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SNR J0519.5-6902
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Title: Radio-Continuum Observations Of Small, Radially Polarised Supernova Remnant J0519-6902 In The Large Magellanic Cloud Authors: L. M. Bozzetto, M. D. Filipovi, D. Uroevi, E. J. Crawford We report on new Australian Telescope Compact Array (ATCA) observations of SNR J0519-6902. The Super...
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Fleming 1 Planetary nebula
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Odd pair of aging stars sculpt spectacular shape of planetary nebula Astronomers using ESO's Very Large Telescope have discovered a pair of stars orbiting each other at the centre of one of the most remarkable examples of a planetary nebula. The new result confirms a long-debated theory about what...
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Cygnus OB2 Association
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Title: New Massive Binaries in the Cygnus OB2 Association Authors: Daniel C. Kiminki, M. Virgina McSwain, Henry A. Kobulnicky As part of an ongoing study to determine the distribution of orbital parameters for massive binaries in the Cygnus OB2 Association, we present the orbital solutions for t...
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SWIFT J1749.4-2807
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Title: SWIFT J1749.4-2807: A neutron or quark star? Authors: Junwei Yu, Renxin Xu We investigate an unique accreting millisecond pulsar with X-ray eclipses, SWIFT J1749.4-2807 (hereafter J1749), and try to limit the binary system by various methods including that of the Roche lobe, the mass-ra...
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