... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

Spatially Resolved MidIR Observations of the Disk Surrounding Par 21 Mario van den Ancker 1 1 European Southern Observatory, KarlSchwarzschildStrasse 2, D85748 Garching bei MЭnchen, Germany 1. Introduction The small group of YSOs known as FU Orionis stars provide striking evidence for the importance and irregularity of disk accretion during early stellar evolution. ... Fig. ... Par 21 is clearly resolved into an elongated structure with a size of a few hundred AU (Figs. ...

... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of stellar systems, large scale structure of the Universe. ... Radio galaxies are important objects to be studied because they are sources of infrared-optical-ultraviolet continuum, emission lines and continual radio emission. ...

HUBBLE SPACE TELESCOPE DAILY REPORT #1278 PERIOD COVERED: 0000Z Daily Status Report as of 339/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed WF/PC-2 5235 (Structures of Quasars and Related Objects (WC10): Cycle 4) The WF/PC-2 was used to make long exposure observations of quasar B21425+267. ... 1.10 Completed WF/PC-2 5416 (Young Globular Clusters in Merger Remnants: Cycle 4 Medium) The WF/PC-2 was used to make images of the galaxy NGC-3610 looking for young globular clusters. ...

... Keck spectropolarimetry, giving spectral coverage from Ly- to beyond CIII], and HST imaging of a sample of powerful radio galaxies with has been obtained. ... This is a short progress report on a rather extensive programme we are carrying out to study the structure and composition of high redshift radio galaxies (HzRG) -- and, by implication, the host galaxies of radio quasars -- using observations in the optical, IR and mm bands. ... An example of the NICMOS and WFPC 2 imaging is shown in Figure 2 ...

... The HH flow associated with young stellar object HL Tau has an exciting history and even until now the origin of some its features is not clear yet. ... Knotty structures of Herbig-Haro jets are common phenomena and knowing the origin of such structures is essential for understanding the processes of jet formation. ... In the flow detected compact knots with high (-150 km/s) and bow shape structures in front of those, with low radial velocities (-50 km/s). ...