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V395 Car
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Title: On the mass of the neutron star in V395 Car/2S 0921-630 Authors: D.Steeghs (Warwick/CfA), P.G.Jonker (SRON/CfA) (Version v2) We report high-resolution optical spectroscopy of the low-mass X-ray binary V395 Car/2S 0921-630 obtained with the MIKE echelle spectrograph on the Magellan-C...
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Sharpless 2-106
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A dramatic new image from the Gemini North telescope illustrates the dynamic and sometimes violent process of star birth. It also demonstrates the capabilities of new filters available to researchers using the Gemini Multi-Object Spectrograph (GMOS). Known as Sharpless 2-106 (Sh2-106), the h...
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V405 Andromeda
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Title: Photospheric and chromospheric activity in V405 And: An M dwarf binary with components on the two sides of the full convection limit Authors: K. Vida, K. Oláh, Zs. Kvári, H. Korhonen, J. Bartus, Zs. Hurta, K. Posztobányi We investigate the fast rotating (P_orb=P_rot=0.465d) active dwarf b...
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Unusually Wide Binaries
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Title: Unusually Wide Binaries: Are They Wide or Unusual? Authors: Adam L. Kraus, Lynne A. Hillenbrand (Caltech) We describe an astrometric and spectroscopic campaign to confirm the youth and association of a complete sample of candidate wide companions in Taurus and Upper Sco. Our survey found...
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V407 Cygni
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Outburst of the symbiotic Mira V407 Cygni Date: 10th March 2010 Outburst: 6.8 V Mira variable: 13.3 - >17.0 V Period: 745 days Position (2000): RA= 21h 02m 09.85s, Dec=+45° 46' 33.0" CBET 2199 (Subscription...
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Masgomas-1
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Title: Discovery of a young and massive stellar cluster: Spectrophotometric near-infrared study of Masgomas-1 Authors: S. Ramírez Alegría, A. Marín-Franch, A. Herrero Context: Recent near-infrared data have contributed to the discovery of new (obscured) massive stellar clusters and massi...
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RCW 175
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Title: A multi-wavelength investigation of RCW175: an HII region harbouring spinning dust emission Authors: C. T. Tibbs, R. Paladini, M. Compiegne, C. Dickinson, M. I. R. Alves, N. Flagey, S. Shenoy, A. Noriega-Crespo, S. Carey, S. Casassus, R. D. Davies, R. J. Davis Using infrared, radio contin...
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G156.2+5.7
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Title: A Suzaku Study of Ejecta Structure and Origin of Hard X-ray Emission in the Supernova Remnant G156.2+5.7 Authors: Hiroyuki Uchida, Hiroshi Tsunemi, Satoru Katsuda, Koji Mori, Robert Petre, Hiroya Yamaguchi We report an X-ray study of the evolved Galactic supernova remnant (SNR) G156.2+...
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Chamaeleon I Star-Forming Region
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Title: The Stellar Population of the Chamaeleon I Star-Forming Region Authors: K. L. Luhman (Penn State) I present a new census of the stellar population in the Chamaeleon I star-forming region. Using optical and near-IR photometry and follow-up spectroscopy, I have discovered 50 new members of...
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IRAS 13481-6124
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Unravelling the Mystery of Star Birth - Dust Disk Discovered Around Massive Star Astronomers caught their first glimpse of a dusty disk closely encircling a massive baby star, providing direct evidence that massive stars form in the same way as their smaller counterparts. The discovery was made t...
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Y dwarfs
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NASA's Wise Mission Discovers Coolest Class of Stars Scientists using data from NASA's Wide-field Infrared Survey Explorer (WISE) have discovered the coldest class of star-like bodies, with temperatures as cool as the human body. Astronomers hunted these dark orbs, termed Y dwarfs, for more th...
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High Mass X-ray Binary System (HMXB)
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IGR J16318-4848 Astronomers have found a new class of objects in space: a neutron star orbiting inside a cocoon of cold gas and/or dust that hides a bloated supergiant star. In a strange twist of fate, these objects may be tremendously luminous, but the enshrouding cocoon absorbs almost all their em...
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LS5039
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(old news)
In a recent issue of Science Magazine, the High Energy Stereoscopic System (H.E.S.S.) team of international astrophysicists reports the discovery of another new type of very high energy (VHE) gamma ray source.
Gamma-rays are produced in extreme cosmic particle accelerators s...
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Very Wide Binaries
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Title: Very Wide Binaries and Other Comoving Stellar Companions: A Bayesian Analysis of the Hipparcos Catalogue Authors: Ed Shaya, Rob Olling We develop Bayesian statistical methods for discovering and assigning probabilities to non-random (e.g., physical) stellar proper motion companion...
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TrES-2b
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Title: The Prograde Orbit of Exoplanet TrES-2b Authors: Joshua N. Winn, John Asher Johnson, Norio Narita, Yasushi Suto, Edwin L. Turner, Debra A. Fischer, R. Paul Butler, Steven S. Vogt, Francis T. O'Donovan, B. Scott Gaudi We monitored the Doppler shift of the G0V star TrES-2 throughout a transit...
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