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Herbig Ae star MWC 325
(Preview)
Title: First Keck Nulling Observations of a Young Stellar Object: Probing the Circumstellar Environment of the Herbig Ae star MWC 325 Authors: S. Ragland, K. Ohnaka, L. Hillenbrand, S. T. Ridgway, M. M. Colavita, R. L. Akeson, W. Cotton, W. C. Danchi, M. Hrynevych, R. Millan-Gabet, W. A. Traub We pr...
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RT Ophiuchi
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Maxima of long period variable RT Ophiuchi on the 9th November, 2011 Magnitude range: 9.6-15.1 Period: 426.34 days Type: Mira Position (2000): RA 17 56 32.036 | Dec +11° 10' 09.72'' Google earth file: RT Ophiuchi.kmz (1kb, kmz)
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XTE J1859+226
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Astrónomos españoles descubren un agujero negro de más de 5 veces la masa del Sol Investigadores del Instituto de Astrofísica de Canarias (IAC) han descubierto un agujero negro de más de 5,4 veces la masa del Sol en el sistema binario de rayos X XTE J1859+226, según han detectado en observaciones rea...
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3A 1954+319
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Title: The 5 hr pulse period and broadband spectrum of the Symbiotic X-ray Binary 3A 1954+319 Authors: Diana M. Marcu, Felix Fuerst, Katja Pottschmidt, Victoria Grinberg, Sebastian Mueller, Joern Wilms, Konstantin A. Postnov, Robin H. D. Corbet, Craig B. Markwardt, Marion Cadolle Bel We presen...
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R Indi
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Maxima of long period variable R Indi on the 7th November, 2011 Magnitude range: 8.4-14.3 Period: 216.26 days Type: Mira Position (2000): RA 22 36 00.37 | Dec -67° 17' 15.8''
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RR Cephei
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Maxima of long period variable RR Cephei on the 7th November, 2011 Magnitude range: 10.2-14.7 Period: 384.18 days Type: Mira Position (2000): 02:43:15.47 +81:08:09.5
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PSR J1823-3021A
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NASA's Fermi Finds Youngest Millisecond Pulsar, 100 Pulsars To-Date An international team of scientists using NASA's Fermi Gamma-ray Space Telescope has discovered a surprisingly powerful millisecond pulsar that challenges existing theories about how these objects form. At the same time, a...
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V Tauri
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Maxima of long period variable V Tauri on the 4th November, 2011 Magnitude range: 9.2-13.7 Period: 168.7 days Type: Mira Position (J2000): R.A. 04 52 02.29 | Dec. +17° 32' 16.5'' Google earth file: V Tauri.kmz (1kb, kmz)
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R Scorpii
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Maxima of long period variable R Scorpii on the 4th November, 2011 Magnitude range: 10.4-15.0 Period: 224.61 days Type: Mira Position (J2000): R.A. 16 17 39.08 | Dec. -22° 56' 40.5'' Google earth file: R Scorpii.kmz (1kb, kmz)
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SV Herculis
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Maxima of long period variable SV Herculis on the 4th November, 2011 Magnitude range: 9.8-14.4 Period: 238.99 days Type: Mira Position (J2000): R.A. 18 26 23.300 | Dec. +25° 01' 34.49'' Google earth file: SV Herculis.kmz (1kb, kmz)
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S Aquilae
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Maxima of long period variable S Aquilae on the 4th November, 2011 Magnitude range: 8.9-12.4 Period: 146.45 days Type: Mira Position (2000): RA 20 11 37.47049 | Dec +15° 37' 14.5858'' Google earth file: S Aquilae.kmz (5kb, kmz)
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PSR B1919+21
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PSR B1919+21 is a pulsar with a period of 1.3373 seconds and a pulse width of 0.04 second. It is notable for being the first radio pulsar ever discovered (in July 1967 by Jocelyn Bell Burnell). Its original designation was CP 1919 and it is also known as PSR J1921+2153. It is located in the constellation...
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O stars
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Title: Do all O stars form in star clusters? Authors: Carsten Weidner, Vasilii V. Gvaramadze, Pavel Kroupa, Jan Pflamm-Altenburg The question whether or not massive stars can form in isolation or only in star clusters is of great importance for the theory of (massive) star-formation as well as for...
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GS 1826-24
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Title: Constraints on neutron star mass and radius in GS 1826-24 from sub-Eddington X-ray bursts Authors: Michael Zamfir, Andrew Cumming, Duncan K. Galloway We investigate the constraints on neutron star mass and radius in GS 1826-24 from models of lightcurves and spectral evolution of type I X-...
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AA Doradus
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Title: AA Doradus and its Cool Companion - The Influence of Enhanced Metal Line Blanketing and the Reflection Effect Authors: Sebastian Müller, Stephan Geier, Ulrich Heber AA Dor is one of only twelve so called HW-Vir systems, which are perfectly suited to determine fundamental properties like r...
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