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Terrestrial Exoplanets
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Title: Coreless Terrestrial Exoplanets Authors: L. Elkins-Tanton, S. Seager (MIT) Differentiation in terrestrial planets is expected to include the formation of a metallic iron core. We predict the existence of terrestrial planets that have differentiated but have no metallic core--planet...
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42
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King 1 open cluster
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Title: The open cluster King~1 in the second quadrant Author: R. Carrera (1,2), L. Rodríguez Espinosa (1,2), L. Casamiquela (3), L. Balaguer Nuñez (3), C. Jordi (3), C. Allende Prieto (1,2), P. B. Stetson (4) ((1) Instituto de Astrofísica de Canarias (2) Departamento de Astrofísica, Universidad...
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High-velocity compact clouds
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Title: Discovery of Two Small High-Velocity Compact Clouds in the Central 10 Parsecs of Our Galaxy Author: Shunya Takekawa, Tomoharu Oka, Yuhei Iwata, Sekito Tokuyama, Mariko Nomura We discovered two small high-velocity compact clouds (HVCCs) in HCN J=4 - 3 and J=3 - 2 maps of the central 20 pc of ou...
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Sharpless 2-54
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VST Captures Three-In-One Two of the sky's more famous residents share the stage with a lesser-known neighbour in this enormous new three gigapixel image from ESO's VLT Survey Telescope (VST). On the right lies the faint, glowing cloud of gas called Sharpless 2-54, the iconic Eagle Nebula is in the...
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NGC 6426
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Title: A CH star in the globular cluster NGC 6426 Authors: M. Sharina, B. Aringer, E. Davoust, A. Y. Kniazev, C. J. Donzelli We report on the serendipitous discovery of a carbon star near the centre of the low-metallicity globular cluster NGC 6426. We determined its membership and chemical properti...
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Boomerang Nebula
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The Hubble Space Telescope has imaged the Boomerang Nebula with the Advanced Camera for Surveys.
This reflecting cloud of dust and gas has two nearly symmetric lobes (or cones) of matter that are being ejected from a central star. Over the last 1,500 years, nearly one and a half times the ma...
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5
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Red Dwarfs
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Title: Identification of New M Dwarfs in the Solar Neighbourhood
Authors: Basmah Riaz, John E. Gizis, James Harvin
Researchers present the results from a spectroscopic study of 1080 nearby active M dwarfs, selected by correlating the 2MASS and ROSAT catalogues. They have...
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Brown Dwarfs
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After decades of searching, astronomers discovered the first definite brown dwarf only ten years ago. Now, a new analysis of Hubble Space Telescope data implies our Galaxy has almost as many of these failed stars as it does normal stars like the Sun.
The Sun and most other stars power themselves by...
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71
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Star Formation
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Astrophysicists at the University of California, Berkeley, and Lawrence Livermore National Laboratory (LLNL) have exploded one of two competing theories about how stars form inside immense clouds of interstellar gas.
Using supercomputer simulations that take into account the turbulen...
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Aql X-1
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Outburst of Aql X-1 Aql X-1 is a suspected low mass X-ray Binary. Magnitude 18 Position(2000): RA 19 11 16.0 Dec +00 35 06 Read more Read more
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7
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HD 107146
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Title: A Resolved Ring of Debris Dust Around the Solar Analog HD 107146 Authors: S. A. Corder, J. M. Carpenter, A. I. Sargent, B. A. Zauderer, M. C. H. Wright, S. White, D. P. Woody, P. Teuben, S. L. Scott, M. W. Pound, R. L. Plambeck, J. W. Lamb, J. Koda, M. W. Hodges, D. W. Hawkins, D. C.-J. Bock (Version v2...
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Microquasar LS I +61 303
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The Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) Telescope has reported the discovery of variable very high energy (VHE) gamma-ray emission from a microquasar. Microquasars are binary star systems, composed of a massive ordinar...
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NGC6397
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Title: Deep ACS Imaging in the Globular Cluster NGC6397: Dynamical Models Authors: Jarrod R. Hurley, Michael M. Shara, Harvey B. Richer, Ivan R. King, D. Saul Davis, Jason S. Kalirai, Brad M. S. Hansen, Aaron Dotter, Jay Anderson, Gregory G. Fahlman, R. Michael Rich We present N-body models to comp...
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NGC 1980
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Title: Orion Revisited - I. The massive cluster in front of the Orion Nebula Cluster Authors: J. Alves, H. Bouy The aim of this work is to characterise the stellar population between Earth and the Orion A molecular cloud where the well known star formation benchmark Orion Nebula Cluster (ONC) is embe...
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The first stars
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1 2 3 4 5 … 6
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Two stars that were thought to be among the first produced in the universe were in fact formed from the explosion of an older star, according to astrophysicists in Japan. Ken'ichi Nomoto and colleagues from the University of Tokyo came to this conclusion by comparing the chemical composition of the...
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