Computer Science
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..924..641c&link_type=abstract
THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. AIP Conference Proceedings, Volume 924, pp. 641-648
Computer Science
Pulsars, Globular Clusters In The Milky Way, Spectroscopic Binaries, Close Binaries
Scientific paper
By means high-resolution images and low resolution spectra taken at the ESO Very Large Telescope, we have studied the properties of the low-mass Helium White Dwarf companion to the millisecond pulsar PSR J1911-5958A (hereafter COM J1911-5958A), in the halo of the Galactic Globular Cluster NGC 6752. The radial velocity curve confirms that COM J1911-5958A is orbiting the pulsar and allows to derive a systemic velocity of the binary system nicely in agreement with that of NGC 6752. Constraints on the orbital inclination (>~ 70°) and pulsar mass (1.2-1.5 Msolar) are derived from the mass ratio MPSR/MCOM = 7.49 +/- 0.64 and photometric properties of COM J1911-5958A. The light curve in B-band shows two phases of unequal brightening (Δmag~ 0.3 and 0.2, respectively) located close to quadratures and superimposed on an almost steady baseline emission.
Cocozza Gabriele
D'Amico Nichi
Ferraro Francesco R.
Possenti Andrea
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