Next: X--ray Quiet PMS Up: Contents Previous: Fits to Evolutionary . The X--ray selected PMS candidates may not constitute a complete list. The primary factor is the sensitivity limit, complicated by the vignetting in the field of the PSPC which was used to make the source list. ... In order to better understand the completeness of the X--ray data, photometry of every star in both regions was undertaken. ... The X--ray quiet sources are distributed evenly across the field (see Figure 8 ). ...

... For complete information about the apparent distribution of HII-regions along the whole galactio equator o Catalogue of 698 known emission nebulae is given on the basis of 13 lists and catalogues of these objects. ... The list of objects from the source-catalogues of HII-regions excluded as SNR, planetaries and galaxies is also given. to be added S number reconstructed from MSL_OPT (Dixon) No RA(1950) DEC(1950) lll.l bb.b Dia" Source NGC,IC,M 1 00 00 18. ...

... The dayside auroral precipitation consist of magnetosheath related boundary layer precipitation, and plasma sheet related BPS/CPS precipitation (extensions of the nightside precipitation regions). ... For example, the much lower fluxes from the LLBL region when compared to the cusp are compensated by the bidirectional electron beams found in the LLBL: the precipitating energy fluxes in the LLBL and the cusp are not that different. ... directly through the cusp and plasma mantle . ...

... Main research and development work completed in 2011 and ready for implementation . ... It is found that the 1.8 MeV line is concentrated in the Galactic disk, whereas positron annihilation takes place in the central region of the Galaxy. ... Main research and development work completed in 2010 and ready for implementation . Main research and development work completed in 2009 and ready for implementation . Main research and development work completed in 2008 and ready for implementation ...

HUBBLE SPACE TELESCOPE DAILY REPORT #2656 PERIOD COVERED: 0000Z (UTC) 06/29/00 - 0000Z (UTC) 06/30/00 Daily Status Report as of 182/0000Z 1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED: 1.1 Completed Two Sets of WF/PC-2 8461 (Cycle 8 Supplemental Darks pt3/3) The WF/PC-2 was used to obtain three dark frames every day to provide data for monitoring and characterizing the evolution of hot pixels. The proposal completed nominally. ... The observations completed nominally, with no reported problems. ...

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... The Australia Telescope National Facility Colloquium . ... We discovered hundreds of previously unknown Milky Way HII regions by using the Green Bank Telescope to detect their hydrogen radio recombination line emission. Since the interstellar medium is optically thin at 3 cm wavelength, we can detect HII regions across the entire Galactic disk. ...

... Many of our new results favour a conal geometry for the arrangement of emission regions and allow accurate estimates of the emission heights and polar cap locations for the emission cones to be obtained. These results indicate that pulsar emission cones may be located at around half-way out the edge of the polar cap and at altitudes of a few hundred to a thousand kilometers above the neutron star surface. ...

... The BL Lac objects found within DXRBS fall mostly in the range . ... A large fraction of the BL Lacs so far in our sample are at L X / L R < 10 -6.5 , the region of Figure 6 populated by LBLs. In this region of parameter space (to the left of the left-most dashed line in Figure 6), DXRBS includes objects up to two orders of magnitude fainter than the 1 Jy survey. ... For comparison, we have plotted the values for members of these three ROSAT-based surveys (DXRBS, HQS/RASS and RC) in Figure 7. ...