... Having quite low efficiency at this pilot stage it is natural to try to improve the selection criteria. The analysis of all accumulated data discussed here, shows that in order to improve the selection of BCGs the following additional criteria and selection procedures should be applied to the preselected lists of candidates: . ... The results of follow-up spectroscopy have shown that even part of the prominent first priority candidates turned out non-emission objects. ...

QED calculations of H2 molecule Vladimir A. Yerokhin St. Petersburg State Polytechnical University in collaboration with Krzysztof Pachucki Warsaw University FFK 2013, Pulkovo, St. Petersburg, October 7-11 Do we need QED for H2? ... 150, 51 (2011) An order of magnitude in precision every 14 years QED : -0.1964 (9) 5, 3039 (2009) Theory: J. Chem. ... Wave function is represented by a linear combination of basis functions Choice of the basis functions: · · Explicitly correlated basis set. ...

We would like to announce the release of Version 2.0 of the CHIANTI database for astrophysical spectroscopy. The additions and corrections to the database have been described in a paper `CHIANTI - an atomic database for emission lines, III - Continuum radiation and extension of the ion database' by E. Landi, M. Landini, K.P. Dere, P.R. Young, H.E. Mason and has been published in Astronomy and Astrophysics Supplement Series, 135, 339 ,1999, (Paper III). ... Beryllium sequence . ... Boron sequence . ...

... The Wide Field Planetary Camera 2 (WFPC2) is now a mature and largely well-characterized instrument. Information already available through the WFPC2 Instrument Handbook and the HST Data Handbook is fairly complete. In this update we provide additional information obtained from recent studies of the instrument, as well as calibration plans for the WFPC2 and a short note on present and planned imaging capabilities for HST. ... Calibration: Calibration of WFPC2 continues. ...

... The cross entropy for this complex image is given by ( 16 ) and ( 17 ). ... Differentiating ( 31 ) with respect to and , we find the gradient of is given by . and upon differentiating once more we find the Hessian (curvature) matrix of has the form . ... and its Hessian matrix reads . ... From ( 16 ) and ( 17 ), we find the components of the gradient vector of the cross entropy are given by . ... Differentiating once more we find the components of the Hessian of the cross entropy to be given by . ...

Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix . The first version of the Scenario Machine was aimed especially at the simulation of massive binary star evolution. ... First, there is a large class of intermediate mass binaries (say, consisting initially of 8 + 5 solar masses) that can also produce NS and thus lead to the formation of a bright X-ray source. ... Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix Mike E. Prokhorov . ...