Query : 2003A&A...399..237E

2003A&A...399..237E - Astronomy and Astrophysics, volume 399, 237-241 (2003/2-3)

Eclipsing binary millisecond pulsar PSR J1740-5340 - evolutionary considerations and observational test.


Abstract (from CDS):

We perform evolutionary calculations for a binary system to produce observed binary parameters for the PSR J1740-5340. Our calculations support the model proposed by D'Amico et al. (2001ApJ...548L.171D) in which this binary may be the progenitor of a millisecond pulsar + helium white dwarf system. We propose an observational test to verify this hypothesis. We propose that observations of abundances of C, N, O elements in the spectra of the optical companion of PSR J1740-5340 may give additional information about the nature of the secondary being either i) a perturbed low-mass main-sequence star or ii) an evolved star with helium core and thin hydrogen envelope which has lost its main envelope during semi-detached evolution.

Abstract Copyright:

Journal keyword(s): stars: evolution - pulsar: individual: PSR J1740-5340

Simbad objects: 2

goto Full paper

goto View the references in ADS

Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 1893 1
2 PSR J1740-5340 Psr 17 40 44.589 -53 40 40.90   17.43   16.25   ~ 138 2

To bookmark this query, right click on this link: simbad:objects in 2003A&A...399..237E and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact