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AL Com
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Title: Outburst of a WZ Sge-type dwarf nova, AL Com in 2007 Authors: M. Uemura, A. Arai, M. Sasada, P. Schmeer, I. Miller, T. Ohsugi, T. Yama****a, K. S. Kawabata, M. Isogai, S. Sato, M. Kino We report photometric observations of AL Com during its rare outburst in 2007. The light curve is reminiscent of...
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NGC 6193
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A Grand Extravaganza of New Stars This dramatic landscape in the southern constellation of Ara (The Altar) is a treasure trove of celestial objects. Star clusters, emission nebulae and active star-forming regions are just some of the riches observed in this region lying some 4000 light-years fro...
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Milky Way Companions
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Title: Two New Milky Way Companions
Authors: Beth Willman
The researchers discuss the detection limits and current status of a uniform survey of
SDSS I for ultra-faint Milky Way dwarf galaxies; and present the properties of
two new, low surface brightness Milky Way companions...
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Metal-Poor Stars
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Title: Carbon and Strontium Abundances of Metal-Poor Stars Authors: David K. Lai (UCSC), Jennifer A. Johnson (OSU), Michael Bolte (UCSC), Sara Lucatello (INAF-OAPD) We present carbon and strontium abundances for 100 metal-poor stars measured from R ~ 7000 spectra obtained with the Echellette...
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Kim 2 Star Cluster
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Title: Discovery of a Faint Outer Halo Milky Way Star Cluster in the Southern Sky Author: Dongwon Kim, Helmut Jerjen, Antonino P. Milone, Dougal Mackey, Gary S. Da Costa We report the discovery of a new, low luminosity star cluster in the outer halo of the Milky Way. High quality gr photometry is prese...
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HRK 81.4-77.8
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Astronomers find newborn stars at the edge of the Galaxy The new clusters, named Camargo 438 and 439, are within the molecular cloud HRK 81.4-77.8. This cloud is thought to be about 2 million years old and is around 16000 light years beneath the galactic disk, an enormous distance away from the usual r...
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Messier 68
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A ten billion-year stellar dance The NASA/ESA Hubble Space Telescope offers this delightful view of the crowded stellar encampment called Messier 68, a spherical, star-filled region of space known as a globular cluster. Mutual gravitational attraction among a cluster's hundreds of thousands...
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HMXB
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ESAs orbiting gamma-ray observatory, Integral has revealed a new population of exotic and dusty binary stars which might represent a brief evolutionary period in a binary stars life. The findings bring to light a gap in our knowledge of the formation and evolution of such binary star systems. Sin...
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PN G054.2-03.4
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Hubble Offers a Dazzling View of the 'Necklace' Nebula A giant cosmic necklace glows brightly in this NASA Hubble Space Telescope image. The object, aptly named the Necklace Nebula, is a recently discovered planetary nebula, the glowing remains of an ordinary, Sun-like star. The nebula consists...
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T Chamaeleontis
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Title: Variability of the transitional T Tauri star T Chamaeleontis Authors: E. Schisano, E. Covino, J.M. Alcala', M. Esposito, D. Gandolfi, E.W. Guenther (Version v2) We characterise the physical properties of T Chamaeleontis, a transitional T Tauri star showing UX Ori-type variability, and...
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AB Aurigae
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ESA's X-ray observatory XMM-Newton has revealed evidence for a magnetic field in space where astronomers never expected to find one. The magnetic field surrounds a young star called AB Aurigae and provides a possible solution to a twenty-year-old puzzle. At 2.7 times the mass of the Sun, AB Au...
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Barnard 5 region
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Title: EVLA Observations of the Barnard 5 Star-Forming Core: Embedded Filaments Revealed Authors: Jaime E. Pineda (1 and 2), Alyssa A. Goodman (3), Héctor G. Arce (4), Paola Caselli (5), Steven Longmore (1), Stuartt Corder (6 and 7) ((1) ESO, (2) UK ARC Node, University of Manchester, (3) Harvard-...
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NGC 7789
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NGC 7789 (also Caroline's Rose Cluster, White Rose Cluster and OCL 269) is a magnitude +6.7 open star cluster located 7,600 light-years away in the constellation Cassiopeia. The cluster was discovered by German astronomer Caroline Lucretia Herschel using a 10.67 cm (4.2 inch) 24x f/6.3 (690 mm fo...
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Active galactic nuclei (AGNs)
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Astronomer Lei Hao has recently found a great deal of dust.
The dust is between 0.88 and 2.4 billion light years away, in active galactic nuclei (AGNs).
By confirming that the dust exists, Hao and her team of r...
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NGC 362
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NGC 362 (also ESO 51-SC13 and GCL 3) is a magnitude +6.3 globular star cluster located about 28,000 light-years away in the constellation Tucana. The cluster was discovered by Scottish astronomer James Dunlop using a homemade 9-foot 22.86 cm (9 inch) f/12 speculum Newtonian reflector at Paramatt...
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