... ATNF Home . ... About ATNF overview . News | ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Now, new Australia Telescope observations of the polar ring galaxy NGC 4650a suggest that the dark matter in this galaxy lies in a flattened distribution aligned with the polar ring. ...

Astronomy Picture of the Day . ... Credit Copyright: 2MASS , T. H. Jarrett , J. Carpenter, R. Hurt Explanation: Are the nearest galaxies distributed randomly? A plot of over one million of the brightest "extended sources" detected by the Two Micron All Sky Survey (2MASS) shows that they are not. ... Many galaxies are gravitationally bound together to form clusters , which themselves are loosely bound into superclusters , which in turn are sometimes seen to align over even larger scale structures . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2010 December 27 . One Million Galaxies . Credit: 2MASS , T. H. Jarrett , J. Carpenter, R. Hurt . ... Many galaxies are gravitationally bound together to form clusters , which themselves are loosely bound into superclusters , which in turn are sometimes seen to align over even larger scale structures . ... About APOD | ...

... 2000 August 18 . X-Rays From Antennae Galaxies . ... CXC , SAO , NASA . Explanation: A bevy of black holes and neutron stars shine as bright, point-like sources against bubbles of million degree gas in this false-color x-ray image from the orbiting Chandra Observatory . ... The exploding stars litter the scene with bubbles of shocked hot gas and collapsed stellar cores . ... Tomorrow's picture: X-ray Sky . ... About APOD | ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

The quantity of dust in a spiral disk can be estimated using the dust's typical emission or the extinction of a known source. In this paper we compare two techniques, one based on emission and one on absorption, applied to sections of 14 disk galaxies. ... Hence, they depend differently on the average number and optical depth of ISM structures in the disk. The small-scale geometry of the cold ISM is critical for accurate models of the overall energy budget of spiral disks. ...

... Previous: Substepping and its Application to HST Imaging . ... This is a preliminary report on an application of the co-addition technique based upon the Richardson-Lucy algorithm. The combination of high signal-to-noise ground-based images obtained with the ESO NTT using SUSI with high angular resolution HST FOC f/96 images gives new insights on the properties of galaxy cores and their potential time variability. Cores of galaxies are one of the main thrusts of present extragalactic research. ...

XMM-Newton Science Analysis System . ... Meta Index / Home Page / Description / Out-of-time events . If withoutoftime =y the task does not create the ``normal'' events file but uses the input file instead to create an event file where all events are treated as out-of-time events. ... Similarly, for Full Frame and Extended Full Frame modes (currently) the 11 rows closest to the CAMEX are set bad onboard but sources in these rows may also cause unrecognized out-of-time events. ...

... Science . ... Science Users Information > Science Publications > Science Announcements . ... Observing Facilities . ... Observing with ESO Telescopes . ... Instrument Pipelines . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... Science Announcements . ... Published: 05 Oct 2015 . ... New data products resulting from the VST Public Survey ATLAS are now available via the dedicated Phase3 query interface at the Science Archive Facility . ... Published: 31 Aug 2015 ....