G. Tovmassian

THE DOUBLE-DEGENERATE NUCLEUS OF THE PLANETARY NEBULA TS 01: A CLOSE BINARY EVOLUTION SHOWCASE

Original article can be found at: http://iopscience.iop.org/0004-637X/ Copyright American Astronomical Society. [Full text of this article is not available in the UHRA]

Multiband optical observations of the old PSR B0950+08

We report on deep UBVRI -imaging of the field of the 17.3 Myr radiopulsar PSR B0950+08  obtained with the ESO/VLT/FORS1. Firm detection of the candidate pulsar optical counterpart in the BVRI bands with the magnitudes

A Close Binary Nucleus in the MOST Oxygen-Poor Planetary Nebula PN G135.9 55.9

B=27.06

The chemical composition of TS 01, the most oxygen-deficient planetary nebula - AGB nucleosynthesis in a metal-poor binary star

± 0.35,

AN XMM-NEWTON SPECTRAL AND TIMING STUDY OF IGR J16207 – 5129: AN OBSCURED AND NON-PULSATING HMXB

V=27.05

Cyclic brightening in the short-period WZ Sge-type cataclysmic variable SDSS J080434.20+510349.2

± 0.15,

On the nature of the hard X-ray sources SWIFT J1907.3−2050, IGR J12123−5802 and IGR J19552+0044

R_{\rm c}=26.49

Time-resolved observations of the short period CV SDSS J123813.73-033933.0

± 0.10 and

BZ Camelopardalis during its 1999/2000 optical low state

I_{\rm c}=26.20

A new two-pole accretion polar: RX J1846.9+5538

± 0.17 enabled us to study, for the first time, the broadband spectrum of the object. The derived ~