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Tau Ceti
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Found: One Planet Orbiting Sun-like Star. Only Twelve Light Years Away. May Be Habitable. An international team of astronomers using the W. M. Keck Observatory and other telescopes, has discovered that Tau Ceti, one of the closest and most Sun-like stars, may host five planets - with one in the elus...
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Zeta Puppis
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Title: Zeta Pup: the merger of at least two massive stars Authors: Dany Vanbeveren We first discuss the stellar and wind parameters of zeta Pup resulting from detailed UV diagnostics. These parameters together with the runaway nature of the star can most easily be explained by dynamical binary-bi...
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2MASS J19310888+4324577
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Title: Detection of a multi-shell planetary nebula around the hot subdwarf O-type star 2MASS J19310888+4324577 Authors: A. Aller, L. F. Miranda, A. Ulla, R. Vázquez, P. F. Guillén, L. Olguín, C. Rodríguez-López, P. Thejll, R. Oreiro, M. Manteiga, E. Pérez The origin of hot subdwarf O-type stars (...
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SDSS J111126.83+571238.6
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Title: The helium-rich cataclysmic variable SBSS 1108+574 Authors: P. J. Carter, D. Steeghs, E. de Miguel, W. Goff, R. A. Koff, T. Krajci, T. R. Marsh, B. T. Gänsicke, E. Breedt, P. J. Groot, G. Nelemans, G. H. A. Roelofs, A. Rau, D. Koester, T. Kupfer We present time-resolved spectroscopy and photom...
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EU Cancri
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Title: Time-resolved Spectroscopy of the Polar EU Cancri in the Open Cluster Messier 67 Authors: Kurtis A. Williams (1), Steve B. Howell (2), James Liebert, Paul S. Smith (3), Andrea Bellini (4), Kate H.R. Rubin (5), Michael Bolte (6) ((1) Texas A&M University-Commerce, (2) NASA Ames, (3) Ste...
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RT Virginis
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Title: The wind of the M-type AGB star RT Virginis probed by VLTI/MIDI Authors: Stéphane Sacuto, Sofia Ramstedt, Susanne Höfner, Hans Olofsson, Sara Bladh, Kjell Eriksson, Bernhard Aringer, Daniela Klotz, Matthias Maercker We study the circumstellar environment of the M-type AGB star RT Vir us...
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PSR B0943+10
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Chameleon Star Baffles Astronomers Scientists identified a pulsar that is able to dramatically change the way in which it shines. In just a few seconds, the star can quiet its radio waves while at the same time it makes its X-ray emissions much brighter. [url=http://www.uvm.edu/~uvmpr/?Page=ne...
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KIC 8626021
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Title: Asteroseismology of the Kepler V777 Her variable white dwarf with fully evolutionary models Authors: Alejandro H. Córsico, Leandro G. Althaus, Marcelo M. Miller Bertolami, Agnès Bischoff-Kim DBV stars are pulsating white dwarfs with atmospheres rich in He. Asteroseismology of DBV sta...
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HD 328862
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Title: An asteroseismic study of the Southern beta Cephei star ALS 3721 Authors: C. Ulusoy, E. Niemczura, B. Ula, T. Gülmez We present the results of a new investigation aimed to identify the pulsational characteristics of the Southern beta Cephei star ALS 3721. Spectroscopic and multicolour pho...
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AW Coronae Borealis
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Title: Light curve analysis and orbital period change of the extreme mass-ratio overcontact binary AW CrB Authors: Eric Broens Extreme mass-ratio contact binaries with a high degree of overcontact may be in the late evolutionary stages of the contact phase. Detailed photometric analyses and or...
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IGR J19308+0530
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Title: IGR J19308+0530: Roche lobe overflow on to a compact object from a donor 1.8 times as massive Authors: E. M. Ratti, T. F. J. van Grunsven, M. A. P. Torres, P. G. Jonker, J. C. A. Miller-Jones, J. W. T. Hessels, H. Van Winckel, M. van der Sluys, G. Nelemans We present phase-resolved spectroscopy an...
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HD 26961
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Dr. Bob Zavala (U.S. Naval Observatory, Flagstaff) has requested AAVSO assistance in obtaining multicolour photometry of the bright triple system b Per in order to prepare for and detect a possible eclipse of the AB components by the C component predicted for 2013 January 23. At 4.5V, b Per, which i...
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HE 1015-2050
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Title: HE 1015-2050: Discovery of a Hydrogen-deficient carbon star at high galactic latitude Authors: Aruna Goswami, Drisya Karinkuzhi, N. S. Shantikumar (1) ((1) Indian Institute of Astrophysics, Bangalore.) Medium resolution spectral analysis of candidate Faint High Latitude Carbon (FH...
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SB 290
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Title: The subdwarf B star SB 290 - A fast rotator on the extreme horizontal branch Authors: S. Geier, U. Heber, C. Heuser, L. Classen, S. J. O'Toole, H. Edelmann Hot subdwarf B stars (sdBs) are evolved core helium-burning stars with very thin hydrogen envelopes. In order to form an sdB, the progenito...
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IRAS 16559-2957
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Title: Detailed atmospheric abundance analysis of the optical counterpart of the IR source IRAS 16559-2957 Authors: R. E. Molina, A. Arellano Ferro We have undertaken a detailed abundance analysis of the optical counterpart of the IR source IRAS16559-2957 with the aim of confirming its possibl...
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