NGC 4013 is a nearby Sb edge-on galaxy known for its “prodigious” HI warp and its “giant” tidal stream. Previous work on this unusual object shows that it...
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NewsThe unusual vertical mass distribution of NGC 4013 seen though the Spitzer Survey of Stellar Structure in Galaxies (S4G).
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NewsThree supernova shells around a young star cluster in M33
Using a specialized technique sensitive to the presence of expanding ionized gas, we have detected a set of three concentric expanding shells in an H ii region...
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NewsTidally trapped pulsations in a close binary star system
It has long been suspected that tidal forces in close binary stars could modify the orientation of the pulsation axis of the constituent stars. Such stars have...
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NewsTrES-2
In August 2006 a new planetary transit was discovered from data from the TrES network. The discovery was confirmed using radial velocity curves obtained with...
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NewsType-II surface brightness profiles in edge-on galaxies produced by flares
Previous numerical studies had apparently ruled out the possibility that flares in galaxy discs could give rise to the apparent breaks in their luminosity...
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NewsUnnoticed magnetic field oscillations in the very quiet Sun revealed by Sunrise/IMaX.
As we enhance the spatial resolution and sensitivity of spectro-polarimetric measurements, it becomes increasingly evident that highly dynamic magnetic fields...
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NewsUnravelling coronal bright points
When the Sun is observed in X-ray or extreme ultraviolet wavelengths, hundreds of bright and compact structures with a rounded shape and sizes similar to that...
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NewsUnveiling the companion of Aquila X-1 40 years after its discovery
Low mass X-ray binaries consist of two components: a compact object (either a neutron star or a stellar-mass black hole) and a star with a mass similar or lower...
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NewsVariability in the Orion nebula
Using images from the HST archive of the Ha and [OIII] l5007A emission lines that are 6.84 years apart, variability in the temperature and density of ionized...