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Alpha Virginis
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Title: Line-profile variability from tidal flows in Alpha Virginis (Spica) Authors: D.M. Harrington, G. Koenigsberger, E. Moreno, J.R. Kuhn (Version v2) We present the results of high precision, high resolution (R~68000) optical observations of the short-period (4d) eccentric binary syste...
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Epsilon Aurigae
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Title: Recent UBVJH Photometry of Epsilon Aurigae Authors: Jeffrey L. Hopkins, Robert E. Stencel Since first observed in the early 1980s, the Hopkins Phoenix Observatory continues its UBV band observations of the long period (27.1 years) eclipsing binary star system epsilon Aurigae. The UBV ob...
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Corot-9b
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Planet with 'temperate' climate found European astronomers have found a planet outside our solar system with a relatively moderate temperature, far cooler than other "exoplanets" discovered to date. The planet Corot-9b has an estimated surface temperature between 160 C and -20 C. I...
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Trumpler 5
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Title: A super lithium-rich red-clump star in the open cluster Trumpler 5 Author: L. Monaco, H. M. J. Boffin, P. Bonifacio, S. Villanova, G. Carraro, E. Caffau, M. Steffen, J. A. Ahumada, Y. Beletsky, G. Beccari Context. The existence of lithium-rich low-mass red giant stars still represents a cha...
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NGC 2245
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NGC 2245 (also IRAS 06299+1011 and LBN 904) is a magnitude +12.2 reflection nebula located about 2480 light years away in the constellation Monoceros. The nebula surrounds the magnitude 10.36 - 10.84 star V699 Monocerotis, and is close to a magnitude +7.5 star HD 46265. The nebula was discovered by...
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NGC 2261
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NGC 2261 (also known as Hubble's Variable Nebula, Caldwell 46 or LBN 920) is a magnitude +9.0 emission and reflection nebula located 272 light years away in the constellation Monoceros. The nebula is illuminated by the T Tauri star R Monocerotis. Because the star is variable, (varying between 10....
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NGC2264
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Astronomers using the Spitzer Space Telescope have captured a spectacular new picture of a star-forming region called the "Christmas Tree Cluster," complete with first-ever views of a group of newborn stars still linked to their siblings.
Spitzer's cameras are very sensitive to th...
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Procyon A
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Title: Oscillations in Procyon A: First results from a multi-site campaign Authors: S Hekker, S Reffert, T R Bedding, H Bruntt, R P Butler, L L Kiss, S J O'Toole, E Kambe, H Ando, H Izumiura, B Sato, M Hartmann, A P Hatzes, T Appourchaux, C Barban, G Berthomieu, F Bouchy, C Catala, R A Garcia, J-C Lebrun, M...
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NGC 3379
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Title: Deep Chandra Monitoring Observations of NGC 3379: Catalogue of Source Properties Authors: N. J. Brassington, G. Fabbiano, D.-W. Kim, A. Zezas, S. Zepf, A. Kundu, L. Angelini, R. L. Davies, J. Gallagher, V. Kalogera, T. Fragos, A. R. King, S. Pellegrini, G. Trinchieri We present the propert...
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Regulus
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Stars are round - that's the received wisdom. But Regulus, the brightest star in the constellation Leo, is shaped like a pumpkin. That's because it is spinning so fast it can barely hold itself together. Now we may know why it whirls so quickly: another star dumped material onto it millions of years ag...
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NGC 3603
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ESO is releasing a magnificent VLT image of the giant stellar nursery surrounding NGC 3603, in which stars are continuously being born. Embedded in this scenic nebula is one of the most luminous and most compact clusters of young, massive stars in our Milky Way, which therefore serves as an excellen...
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IM Lupi
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Title: Probing dust grain evolution in IM Lupi's circumstellar disc. Multi-wavelength observations and modelling of the dust disc Authors: C. Pinte, D.L. Padgett, F. Menard, K.R. Stapelfeldt, G. Schneider, J. Olofsson, O. Panic, J.C. Augereau, G. Duchene, J. Krist, K. Pontoppidan, M.D. Perri...
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Laevens 2/Triangulum II
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Title: A New Faint Milky Way Satellite Discovered in the Pan-STARRS1 3 pi Survey Author: Benjamin P. M. Laevens, Nicolas F. Martin, Rodrigo A. Ibata, Hans-Walter Rix, Edouard J. Bernard, Eric F. Bell, Branimir Sesar, Annette M. N. Ferguson, Edward F. Schlafly, Colin T. Slater, William S. Burgett,...
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Sagittarius Dwarf Galaxy
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Even though a dwarf galaxy clear across the Milky Way looks to be a mouse, it may have once been a bear that slashed through the Milky Way and created the galaxy's spiral arms, writes an Iowa State University astronomer in the journal Nature. Curtis Struck, an Iowa State professor of physics and astron...
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VY Canis Majoris
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Title: Bringing VY Canis Majoris Down to Size: An Improved Determination of Its Effective Tempeature
Authors: Philip Massey, Emily M. Levesque, Bertrand Plez
The star VY CMa is a late-type M supergiant with many peculiarities, mostly related to the intense circ...
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